source: XIOS/dev/XIOS_DEV_CMIP6/src/node/grid.cpp @ 1372

#include "grid.hpp"

#include "attribute_template.hpp"
#include "object_template.hpp"
#include "group_template.hpp"
#include "message.hpp"
#include <iostream>
#include "xios_spl.hpp"
#include "type.hpp"
#include "context.hpp"
#include "context_client.hpp"
#include "context_server.hpp"
#include "array_new.hpp"
#include "server_distribution_description.hpp"
#include "client_server_mapping_distributed.hpp"
#include "distribution_client.hpp"
#include "grid_transformation.hpp"
#include "grid_generate.hpp"
#include "server.hpp"

namespace xios {

   /// ////////////////////// Dfinitions ////////////////////// ///

   CGrid::CGrid(void)
      : CObjectTemplate<CGrid>(), CGridAttributes()
      , isChecked(false), isDomainAxisChecked(false)
      , vDomainGroup_(), domList_(), isDomListSet(false)
      , vAxisGroup_(), axisList_(), isAxisListSet(false)
      , vScalarGroup_(), scalarList_(), isScalarListSet(false)
      , clientDistribution_(0), isIndexSent(false) , serverDistribution_(0), clientServerMap_(0)
      , writtenDataSize_(0), numberWrittenIndexes_(0), totalNumberWrittenIndexes_(0), offsetWrittenIndexes_(0)
      , connectedDataSize_(), connectedServerRank_(), connectedServerRankRead_(), connectedDataSizeRead_()
          , isDataDistributed_(true), isCompressible_(false)
      , transformations_(0), isTransformed_(false)
      , axisPositionInGrid_(), hasDomainAxisBaseRef_(false)
      , gridSrc_(), hasTransform_(false), isGenerated_(false), order_(), globalIndexOnServer_()
      , computedWrittenIndex_(false)
      , clients()
   {
     setVirtualDomainGroup(CDomainGroup::create(getId() + "_virtual_domain_group"));
     setVirtualAxisGroup(CAxisGroup::create(getId() + "_virtual_axis_group"));
     setVirtualScalarGroup(CScalarGroup::create(getId() + "_virtual_scalar_group"));
   }

   CGrid::CGrid(const StdString& id)
      : CObjectTemplate<CGrid>(id), CGridAttributes()
      , isChecked(false), isDomainAxisChecked(false)
      , vDomainGroup_(), domList_(), isDomListSet(false)
      , vAxisGroup_(), axisList_(), isAxisListSet(false)
      , vScalarGroup_(), scalarList_(), isScalarListSet(false)
      , clientDistribution_(0), isIndexSent(false) , serverDistribution_(0), clientServerMap_(0)
      , writtenDataSize_(0), numberWrittenIndexes_(0), totalNumberWrittenIndexes_(0), offsetWrittenIndexes_(0)
      , connectedDataSize_(), connectedServerRank_(), connectedServerRankRead_(), connectedDataSizeRead_()
          , isDataDistributed_(true), isCompressible_(false)
      , transformations_(0), isTransformed_(false)
      , axisPositionInGrid_(), hasDomainAxisBaseRef_(false)
      , gridSrc_(), hasTransform_(false), isGenerated_(false), order_(), globalIndexOnServer_()
      , computedWrittenIndex_(false)
      , clients()
   {
     setVirtualDomainGroup(CDomainGroup::create(getId() + "_virtual_domain_group"));
     setVirtualAxisGroup(CAxisGroup::create(getId() + "_virtual_axis_group"));
     setVirtualScalarGroup(CScalarGroup::create(getId() + "_virtual_scalar_group"));
   }

   CGrid::~CGrid(void)
   {
    if (0 != clientDistribution_) delete clientDistribution_;
    if (0 != serverDistribution_) delete serverDistribution_;
    if (0 != clientServerMap_) delete clientServerMap_;
    if (0 != transformations_) delete transformations_;
   }

   ///---------------------------------------------------------------

   StdString CGrid::GetName(void)    { return StdString("grid"); }
   StdString CGrid::GetDefName(void) { return CGrid::GetName(); }
   ENodeType CGrid::GetType(void)    { return eGrid; }


   StdSize CGrid::getDimension(void)
   {
      return getGlobalDimension().size();
   }

   //---------------------------------------------------------------

   StdSize CGrid::getDataSize(void) const
   {
     StdSize retvalue = 1;
     if (!isScalarGrid())
     {
       std::vector<int> dataNindex = clientDistribution_->getDataNIndex();
       for (int i = 0; i < dataNindex.size(); ++i) retvalue *= dataNindex[i];       
     }
     return retvalue;
   }

   /*!
    * Compute the minimum buffer size required to send the attributes to the server(s).
    *
    * \return A map associating the server rank with its minimum buffer size.
    * TODO: Refactor code
    */
   std::map<int, StdSize> CGrid::getAttributesBufferSize(CContextClient* client, bool bufferForWriting)
   {
     std::map<int, StdSize> attributesSizes = getMinimumBufferSizeForAttributes(client);

     // The grid indexes require a similar size as the actual data
     std::map<int, StdSize> dataSizes = getDataBufferSize(client, "", bufferForWriting);
     std::map<int, StdSize>::iterator it, itE = dataSizes.end();
     for (it = dataSizes.begin(); it != itE; ++it)
     {
       it->second += 2 * sizeof(bool);
       if (it->second > attributesSizes[it->first])
         attributesSizes[it->first] = it->second;
     }
     
     // Account for the axis attributes
     std::vector<CAxis*> axisList = getAxis();
     for (size_t i = 0; i < axisList.size(); ++i)
     {
       std::map<int, StdSize> axisAttBuffSize = axisList[i]->getAttributesBufferSize(client, getGlobalDimension(),axisPositionInGrid_[i]);
       for (it = axisAttBuffSize.begin(), itE = axisAttBuffSize.end(); it != itE; ++it)
       {
         it->second += 2 * sizeof(bool);
         if (it->second > attributesSizes[it->first])
           attributesSizes[it->first] = it->second;
       }
     }

     // Account for the domain attributes
     std::vector<CDomain*> domList = getDomains();
     for (size_t i = 0; i < domList.size(); ++i)
     {
       std::map<int, StdSize> domAttBuffSize = domList[i]->getAttributesBufferSize(client);
       for (it = domAttBuffSize.begin(), itE = domAttBuffSize.end(); it != itE; ++it)
       {
         it->second += 2 * sizeof(bool);
         if (it->second > attributesSizes[it->first])
           attributesSizes[it->first] = it->second;
       }
     }

     return attributesSizes;
  }

   /*!
    * Compute the minimum buffer size required to send the data.
    * \param client contextClient used to determine the size of connected receivers
    * \param id the id used to tag the data
    * \param bufferForWriting flag indicating if a buffer is used to send data for writing
    * \return A map associating the sender rank with its minimum buffer size.
    */
   std::map<int, StdSize> CGrid::getDataBufferSize(CContextClient* client, const std::string& id /*= ""*/, bool bufferForWriting /*= "false"*/)
   {     
     // The record index is sometimes sent along with the data but we always
     // include it in the size calculation for the sake of simplicity
     const size_t extraSize = CEventClient::headerSize + (id.empty() ? getId() : id).size() 
                                                       + 2 * sizeof(size_t) 
                                                       + sizeof(size_t);

     std::map<int, StdSize> dataSizes;
     int receiverSize = client->serverSize;
     std::map<int,size_t>& dataSizeMap = bufferForWriting ? connectedDataSize_[receiverSize]: connectedDataSizeRead_;
     std::vector<int>& connectedServerRanks = bufferForWriting ? connectedServerRank_[receiverSize] : connectedServerRankRead_;

     std::map<int, size_t>::const_iterator itEnd = dataSizeMap.end();
     for (size_t k = 0; k < connectedServerRanks.size(); ++k)
     {
       int rank = connectedServerRanks[k];
       std::map<int, size_t>::const_iterator it = dataSizeMap.find(rank);
       size_t count = (it != itEnd) ? it->second : 0;

       dataSizes.insert(std::make_pair(rank, extraSize + CArray<double,1>::size(count)));
     }

     return dataSizes;
   }

   size_t CGrid::getGlobalWrittenSize(void)
   {
         std::vector<CDomain*> domainP = this->getDomains();
     std::vector<CAxis*> axisP = this->getAxis();
     
     size_t globalGridSize=1 ;
     for (std::vector<CDomain*>::iterator it=domainP.begin(); it!=domainP.end();++it) globalGridSize*=(*it)->getGlobalWrittenSize() ;
     for (std::vector<CAxis*>::iterator it=axisP.begin(); it!=axisP.end();++it) globalGridSize*=(*it)->getGlobalWrittenSize() ;
     return globalGridSize ;
   }
   
   
   void CGrid::checkAttributesAfterTransformation()
   {
      setAxisList();
      std::vector<CAxis*> axisListP = this->getAxis();
      if (!axisListP.empty())
      {
        int idx = 0;
        axisPositionInGrid_.resize(0);
        for (int i = 0; i < axis_domain_order.numElements(); ++i)
        {
          int elementDimension = axis_domain_order(i);
          if (1 == elementDimension)
          {
            axisPositionInGrid_.push_back(idx);
            ++idx;
          }
          else if (2 == elementDimension) idx += 2;
        }

        for (int i = 0; i < axisListP.size(); ++i)
        {
          axisListP[i]->checkAttributesOnClientAfterTransformation(getGlobalDimension(),axisPositionInGrid_[i]);
        }
      }

      setDomainList();
      std::vector<CDomain*> domListP = this->getDomains();
      if (!domListP.empty())
      {
        for (int i = 0; i < domListP.size(); ++i)
        {
          domListP[i]->checkAttributesOnClientAfterTransformation();
        }
      }
   }

   //---------------------------------------------------------------

   /*!
    * Test whether the data defined on the grid can be outputted in a compressed way.
    *
    * \return true if and only if a mask was defined for this grid
    */
   bool CGrid::isCompressible(void) const
   {
      return isCompressible_;
   }

   //---------------------------------------------------------------

   void CGrid::addRelFileCompressed(const StdString& filename)
   {
      this->relFilesCompressed.insert(filename);
   }

   bool CGrid::isWrittenCompressed(const StdString& filename) const
   {
      return (this->relFilesCompressed.find(filename) != this->relFilesCompressed.end());
   }

   //---------------------------------------------------------------
   /*
     Find all reference of grid's components and inherite attributes if necessary
   */
   void CGrid::solveDomainAxisRef(bool areAttributesChecked)
   {
     if (this->isDomainAxisChecked) return;

     this->solveScalarRef(areAttributesChecked);
     this->solveAxisRef(areAttributesChecked);
     this->solveDomainRef(areAttributesChecked);     
     this->isDomainAxisChecked = areAttributesChecked;
   }

   /*
     Go up hierachy reference and fill in the base reference with attributes of the children
     This function should be only used after reading component's attributes from file
   */
   void CGrid::solveDomainAxisBaseRef()
   {
     if (this->hasDomainAxisBaseRef_) return;
     // Account for the scalar attributes
     std::vector<CScalar*> scalarList = getScalars();
     for (size_t i = 0; i < scalarList.size(); ++i)
     {
       scalarList[i]->setAttributesReference();
     }

     // Account for the axis attributes
     std::vector<CAxis*> axisList = getAxis();
     for (size_t i = 0; i < axisList.size(); ++i)
     {
       axisList[i]->setAttributesReference();
     }

     // Account for the domain attributes
     std::vector<CDomain*> domList = getDomains();
     for (size_t i = 0; i < domList.size(); ++i)
     {
       domList[i]->setAttributesReference();
     }

     this->hasDomainAxisBaseRef_ = true;
   }

   void CGrid::checkEligibilityForCompressedOutput()
   {
     // We don't check if the mask is valid here, just if a mask has been defined at this point.
     isCompressible_ = !mask_1d.isEmpty() || !mask_2d.isEmpty() || !mask_3d.isEmpty();
   }

   void CGrid::checkMaskIndex(bool doSendingIndex)
   {
     CContext* context = CContext::getCurrent();
     int nbSrvPools = (context->hasServer) ? (context->hasClient ? context->clientPrimServer.size() : 0) : 1;   
     nbSrvPools = 1;  
     for (int p = 0; p < nbSrvPools; ++p)
     {    
       if (context->hasClient && this->isChecked && doSendingIndex && !isIndexSent) 
       { 
         if (isScalarGrid())
           sendIndexScalarGrid();
         else
           sendIndex();
         this->isIndexSent = true; 
       }

       // Not sure about this
       //if (!(this->hasTransform() && !this->isTransformed()))
       // this->isChecked = true;
       //return;
     }
    
     if (this->isChecked) return;
     this->checkAttributesAfterTransformation();

     // TODO: Transfer grid attributes
     //if (!context->hasClient && context->hasServer) this->createMask();
     this->computeIndex();

     if (!(this->hasTransform() && !this->isTransformed()))
      this->isChecked = true;

     if (!(this->hasTransform() && (!this->isGenerated())))
      this->isChecked = true;
   }

   /*
     Create mask of grid from mask of its components
   */
   void CGrid::createMask(void)
   {
      using namespace std;
      std::vector<CDomain*> domainP = this->getDomains();
      std::vector<CAxis*> axisP = this->getAxis();
      int dim = domainP.size() * 2 + axisP.size();

      std::vector<CArray<bool,1>* > domainMasks(domainP.size());
      for (int i = 0; i < domainMasks.size(); ++i) domainMasks[i] = &(domainP[i]->domainMask);
      std::vector<CArray<bool,1>* > axisMasks(axisP.size());
      for (int i = 0; i < axisMasks.size(); ++i) axisMasks[i] = &(axisP[i]->mask);

      switch (dim) {
        case 1:
          checkGridMask(mask_1d, domainMasks, axisMasks, axis_domain_order, true);
          break;
        case 2:
          checkGridMask(mask_2d, domainMasks, axisMasks, axis_domain_order, true);
          break;
        case 3:
          checkGridMask(mask_3d, domainMasks, axisMasks, axis_domain_order, true);
          break;
        case 4:
          checkGridMask(mask_4d, domainMasks, axisMasks, axis_domain_order, true);
          break;
        case 5:
          checkGridMask(mask_5d, domainMasks, axisMasks, axis_domain_order, true);
          break;
        case 6:
          checkGridMask(mask_6d, domainMasks, axisMasks, axis_domain_order, true);
          break;
        case 7:
          checkGridMask(mask_7d, domainMasks, axisMasks, axis_domain_order, true);
          break;
        default:
          break;
      }
   }

   /*
     Check validity of grid's mask by using the masks of its components
   */
   void CGrid::checkMask(void)
   {
      using namespace std;
      std::vector<CDomain*> domainP = this->getDomains();
      std::vector<CAxis*> axisP = this->getAxis();
      int dim = domainP.size() * 2 + axisP.size();

      std::vector<CArray<bool,1>* > domainMasks(domainP.size());
      for (int i = 0; i < domainMasks.size(); ++i) domainMasks[i] = &(domainP[i]->domainMask);
      std::vector<CArray<bool,1>* > axisMasks(axisP.size());
      for (int i = 0; i < axisMasks.size(); ++i) axisMasks[i] = &(axisP[i]->mask);

      switch (dim) {
        case 1:
          checkGridMask(mask_1d, domainMasks, axisMasks, axis_domain_order);
          break;
        case 2:
          checkGridMask(mask_2d, domainMasks, axisMasks, axis_domain_order);
          break;
        case 3:
          checkGridMask(mask_3d, domainMasks, axisMasks, axis_domain_order);
          break;
        case 4:
          checkGridMask(mask_4d, domainMasks, axisMasks, axis_domain_order);
          break;
        case 5:
          checkGridMask(mask_5d, domainMasks, axisMasks, axis_domain_order);
          break;
        case 6:
          checkGridMask(mask_6d, domainMasks, axisMasks, axis_domain_order);
          break;
        case 7:
          checkGridMask(mask_7d, domainMasks, axisMasks, axis_domain_order);
          break;
        default:
          break;
      }
   }

   /*
     Modify value of mask in a certain index
     This function can be used to correct the mask of grid after being constructed with createMask
     \param [in] indexToModify
     \param [in] modifyValue
   */
   void CGrid::modifyMask(const CArray<int,1>& indexToModify, bool modifyValue)
   {
      using namespace std;
      std::vector<CDomain*> domainP = this->getDomains();
      std::vector<CAxis*> axisP = this->getAxis();
      int dim = domainP.size() * 2 + axisP.size();

      switch (dim) {
        case 0:
          modifyGridMask(mask_0d, indexToModify, modifyValue);
          break;
        case 1:
          modifyGridMask(mask_1d, indexToModify, modifyValue);
          break;
        case 2:
          modifyGridMask(mask_2d, indexToModify, modifyValue);
          break;
        case 3:
          modifyGridMask(mask_3d, indexToModify, modifyValue);
          break;
        case 4:
          modifyGridMask(mask_4d, indexToModify, modifyValue);
          break;
        case 5:
          modifyGridMask(mask_5d, indexToModify, modifyValue);
          break;
        case 6:
          modifyGridMask(mask_6d, indexToModify, modifyValue);
          break;
        case 7:
          modifyGridMask(mask_7d, indexToModify, modifyValue);
          break;
        default:
          break;
      }
   }

   /*
     Change the mask size. This function is used on reconstructing mask in server side
     \param [in] newDimensionSize
     \param [in] newValue 
   */
   void CGrid::modifyMaskSize(const std::vector<int>& newDimensionSize, bool newValue)
   {      
      std::vector<CDomain*> domainP = this->getDomains();
      std::vector<CAxis*> axisP = this->getAxis();            
      int dim = domainP.size() * 2 + axisP.size();

      switch (dim) {
        case 0:
          modifyGridMaskSize(mask_0d, newDimensionSize, newValue);
          break;
        case 1:
          modifyGridMaskSize(mask_1d, newDimensionSize, newValue);
          break;
        case 2:
          modifyGridMaskSize(mask_2d, newDimensionSize, newValue);
          break;
        case 3:
          modifyGridMaskSize(mask_3d, newDimensionSize, newValue);
          break;
        case 4:
          modifyGridMaskSize(mask_4d, newDimensionSize, newValue);
          break;
        case 5:
          modifyGridMaskSize(mask_5d, newDimensionSize, newValue);
          break;
        case 6:
          modifyGridMaskSize(mask_6d, newDimensionSize, newValue);
          break;
        case 7:
          modifyGridMaskSize(mask_7d, newDimensionSize, newValue);
          break;
        default:
          break;
      }
   }

   //---------------------------------------------------------------

   void CGrid::solveDomainRef(bool sendAtt)
   {
      setDomainList();
      std::vector<CDomain*> domListP = this->getDomains();
      if (!domListP.empty())
      {
        for (int i = 0; i < domListP.size(); ++i)
        {
          if (sendAtt) domListP[i]->sendCheckedAttributes();
          else domListP[i]->checkAttributesOnClient();
        }
      }
   }

   //---------------------------------------------------------------

   void CGrid::solveAxisRef(bool sendAtt)
   {
      setAxisList();
      std::vector<CAxis*> axisListP = this->getAxis();
      if (!axisListP.empty())
      {
        int idx = 0;
        axisPositionInGrid_.resize(0);
        for (int i = 0; i < axis_domain_order.numElements(); ++i)
        {
          int elementDimension = axis_domain_order(i);
          if (1 == elementDimension)
          {
            axisPositionInGrid_.push_back(idx);
            ++idx;
          }
          else if (2 == elementDimension) idx += 2;
        }

        for (int i = 0; i < axisListP.size(); ++i)
        {
          if (sendAtt)
            axisListP[i]->sendCheckedAttributes(getGlobalDimension(),axisPositionInGrid_[i]);
          else
            axisListP[i]->checkAttributesOnClient();
        }
      }
   }

   //---------------------------------------------------------------

   void CGrid::solveScalarRef(bool sendAtt)
   {
      setScalarList();
      std::vector<CScalar*> scalarListP = this->getScalars();
      if (!scalarListP.empty())
      {
        for (int i = 0; i < scalarListP.size(); ++i)
        {
          /*Nothing to do for now */
//          if (sendAtt) scalarListP[i]->sendCheckedAttributes();
//          else scalarListP[i]->checkAttributesOnClient();
        }
      }
   }

   /*!
      Compute the index to for write data into a file
   */
   void CGrid::computeWrittenIndex()
   {      
      if (computedWrittenIndex_) return;
      computedWrittenIndex_ = true;

      if (isScalarGrid())
      {
        size_t nbWritten = 1;
        int writtenIndex = 0;

        localIndexToWriteOnClient.resize(nbWritten);  
        localIndexToWriteOnServer.resize(nbWritten);
        localIndexToWriteOnServer(0) = writtenIndex;
        localIndexToWriteOnClient(0) = writtenIndex;
        
        return;
      }

      size_t nbWritten = 0, indGlo;
      CDistributionClient::GlobalLocalDataMap& globalDataIndex = clientDistribution_->getGlobalDataIndexOnClient();
      CDistributionClient::GlobalLocalDataMap::const_iterator itb = globalDataIndex.begin(),
                                                              ite = globalDataIndex.end(), it;    
      const CDistributionServer::GlobalLocalMap& globalLocalIndex = serverDistribution_->getGlobalLocalIndex();                                                              
      CDistributionServer::GlobalLocalMap::const_iterator itSrvb = globalLocalIndex.begin(),
                                                          itSrve = globalLocalIndex.end(), itSrv;
      for (it = itb; it != ite; ++it)
      {
        indGlo = it->first;
        if (globalLocalIndex.end() != globalLocalIndex.find(indGlo)) ++nbWritten;                
      }

      localIndexToWriteOnClient.resize(nbWritten);  
      localIndexToWriteOnServer.resize(nbWritten);
      
      {
        numberWrittenIndexes_ = nbWritten;
        if (isDataDistributed_)
        {
          CContextServer* server = CContext::getCurrent()->server;      
          MPI_Allreduce(&numberWrittenIndexes_, &totalNumberWrittenIndexes_, 1, MPI_INT, MPI_SUM, server->intraComm);
          MPI_Scan(&numberWrittenIndexes_, &offsetWrittenIndexes_, 1, MPI_INT, MPI_SUM, server->intraComm);
          offsetWrittenIndexes_ -= numberWrittenIndexes_;
        }
        else
          totalNumberWrittenIndexes_ = numberWrittenIndexes_;
      }

      nbWritten = 0; 
      for (it = itb; it != ite; ++it)
      {
        indGlo = it->first;
        itSrv = globalLocalIndex.find(indGlo);
        if (itSrve != itSrv)
        {
          localIndexToWriteOnServer(nbWritten) = itSrv->second;
          localIndexToWriteOnClient(nbWritten) = it->second;
          ++nbWritten;                
        } 
      }
   }

   //---------------------------------------------------------------

   /*
     Compute the global index and its local index taking account mask and data index.
     These global indexes will be used to compute the connection of this client (sender) to its servers (receivers)
     (via function computeConnectedClient)
     These global indexes also correspond to data sent to servers (if any)
   */
   void CGrid::computeClientIndex()
   {
     CContext* context = CContext::getCurrent();

     CContextClient* client = context->client;  // Here it's not important which contextClient to recuperate
     int rank = client->clientRank;

     clientDistribution_ = new CDistributionClient(rank, this);
     // Get local data index on client
     storeIndex_client.resize(clientDistribution_->getLocalDataIndexOnClient().size());
     int nbStoreIndex = storeIndex_client.numElements();
     for (int idx = 0; idx < nbStoreIndex; ++idx) storeIndex_client(idx) = (clientDistribution_->getLocalDataIndexOnClient())[idx];

     if (0 == serverDistribution_) isDataDistributed_= clientDistribution_->isDataDistributed();
     else
     {
        // Mapping global index received from clients to the storeIndex_client
        CDistributionClient::GlobalLocalDataMap& globalDataIndex = clientDistribution_->getGlobalDataIndexOnClient();
        CDistributionClient::GlobalLocalDataMap::const_iterator itGloe = globalDataIndex.end();
        map<int, CArray<size_t, 1> >::iterator itb = outGlobalIndexFromClient.begin(),
                                               ite = outGlobalIndexFromClient.end(), it;

        for (it = itb; it != ite; ++it)
        {
          int rank = it->first;
          CArray<size_t,1>& globalIndex = outGlobalIndexFromClient[rank];
          outLocalIndexStoreOnClient.insert(make_pair(rank, CArray<size_t,1>(globalIndex.numElements())));
          CArray<size_t,1>& localIndex = outLocalIndexStoreOnClient[rank];
          size_t nbIndex = 0;

          // Keep this code for this moment but it should be removed (or moved to DEBUG) to improve performance
          for (size_t idx = 0; idx < globalIndex.numElements(); ++idx)
          {
            if (itGloe != globalDataIndex.find(globalIndex(idx)))
            {
              ++nbIndex;
            }
          }

          if (doGridHaveDataDistributed(client) && (nbIndex != localIndex.numElements()))
               ERROR("void CGrid::computeClientIndex()",
                  << "Number of local index on client is different from number of received global index"
                  << "Rank of sent client " << rank <<"."
                  << "Number of local index " << nbIndex << ". "
                  << "Number of received global index " << localIndex.numElements() << ".");

          nbIndex = 0;
          for (size_t idx = 0; idx < globalIndex.numElements(); ++idx)
          {
            if (itGloe != globalDataIndex.find(globalIndex(idx)))
            {
              localIndex(idx) = globalDataIndex[globalIndex(idx)];
            }
          }
        }
      }
   }

   /*!
     Compute connected receivers and indexes to be sent to these receivers.
   */
   void CGrid::computeConnectedClients()
   {
     CContext* context = CContext::getCurrent();
     int nbSrvPools = (context->clientPrimServer.size() == 0) ? 1 : context->clientPrimServer.size();
     connectedServerRank_.clear();
     connectedDataSize_.clear();
     globalIndexOnServer_.clear();
     nbSenders.clear();

     for (int p = 0; p < nbSrvPools; ++p)
     {
       CContextClient* client = (context->clientPrimServer.size() == 0) ? context->client : context->clientPrimServer[p];
       int receiverSize = client->serverSize;
//       connectedServerRank_[client].clear();

       if (connectedServerRank_.find(receiverSize) == connectedServerRank_.end())
       {
        if (!doGridHaveDataDistributed(client))
         {
            if (client->isServerLeader())
            {
              size_t ssize = clientDistribution_->getLocalDataIndexOnClient().size();
              const std::list<int>& ranks = client->getRanksServerLeader();
              for (std::list<int>::const_iterator itRank = ranks.begin(), itRankEnd = ranks.end(); itRank != itRankEnd; ++itRank)
              {
                connectedServerRank_[receiverSize].push_back(*itRank);
                connectedDataSize_[receiverSize][*itRank] = ssize;
              }
            }
            return;
         }

         // Compute mapping between client and server
         std::vector<boost::unordered_map<size_t,std::vector<int> > > indexServerOnElement;
         CServerDistributionDescription serverDistributionDescription(getGlobalDimension(), client->serverSize);
         std::vector<int> serverZeroIndex = serverDistributionDescription.computeServerGlobalByElement(indexServerOnElement,
                                                                                                    client->clientRank,
                                                                                                    client->clientSize,
                                                                                                    axis_domain_order,
                                                                                                    getDistributedDimension());

         // Even if servers have no index, they must received something from client
         // We only use several client to send "empty" message to these servers
         std::list<int> serverZeroIndexLeader;
         std::list<int> serverZeroIndexNotLeader;
         CContextClient::computeLeader(client->clientRank, client->clientSize, serverZeroIndex.size(), serverZeroIndexLeader, serverZeroIndexNotLeader);
         for (std::list<int>::iterator it = serverZeroIndexLeader.begin(); it != serverZeroIndexLeader.end(); ++it)
           *it = serverZeroIndex[*it];

         if (globalIndexOnServer_.find(receiverSize) == globalIndexOnServer_.end())
           computeIndexByElement(indexServerOnElement, client, globalIndexOnServer_[receiverSize]);

         const CDistributionClient::GlobalLocalDataMap& globalLocalIndexSendToServer = clientDistribution_->getGlobalLocalDataSendToServer();
         CDistributionClient::GlobalLocalDataMap::const_iterator iteGlobalLocalIndexMap = globalLocalIndexSendToServer.end(), itGlobalLocalIndexMap;
         CClientServerMapping::GlobalIndexMap::const_iterator iteGlobalMap, itbGlobalMap, itGlobalMap;
         itbGlobalMap = globalIndexOnServer_[receiverSize].begin();
         iteGlobalMap = globalIndexOnServer_[receiverSize].end();

         for (itGlobalMap  = itbGlobalMap; itGlobalMap != iteGlobalMap; ++itGlobalMap)
         {
           int serverRank = itGlobalMap->first;
           int indexSize = itGlobalMap->second.size();
           const std::vector<size_t>& indexVec = itGlobalMap->second;
           for (int idx = 0; idx < indexSize; ++idx)
           {
              itGlobalLocalIndexMap = globalLocalIndexSendToServer.find(indexVec[idx]);
              if (iteGlobalLocalIndexMap != itGlobalLocalIndexMap)
              {
                if (connectedDataSize_[receiverSize].end() == connectedDataSize_[receiverSize].find(serverRank))
                  connectedDataSize_[receiverSize][serverRank] = 1;
                else
                  ++connectedDataSize_[receiverSize][serverRank];
              }
           }
         }

         // Connected servers which really have index
         for (itGlobalMap = itbGlobalMap; itGlobalMap != iteGlobalMap; ++itGlobalMap) {
           connectedServerRank_[receiverSize].push_back(itGlobalMap->first);
         }

         // Connected servers which have no index at all
         for (std::list<int>::iterator it = serverZeroIndexLeader.begin(); it != serverZeroIndexLeader.end(); ++it)
           connectedServerRank_[receiverSize].push_back(*it);

         // Even if a client has no index, it must connect to at least one server and
         // send an "empty" data to this server
         if (connectedServerRank_[receiverSize].empty())
          connectedServerRank_[receiverSize].push_back(client->clientRank % client->serverSize);

         nbSenders[receiverSize] = clientServerMap_->computeConnectedClients(receiverSize, client->clientSize, client->intraComm, connectedServerRank_[receiverSize]);
       }
     }
   }

   /*!
     Compute the global index of grid to send to server as well as the connected server of the current client.
     First of all, from the local data on each element of grid, we can calculate their local index which also allows us to know
     their global index. We can have a map of global index of grid and local index that each client holds
     Then, each client holds a piece of information about the distribution of servers, which permits to compute the connected server(s)
     of the current client.
   */
   void CGrid::computeIndex(void)
   {
     CContext* context = CContext::getCurrent();
     if (isScalarGrid())
     {
       computeClientIndexScalarGrid();
       if (context->hasClient)
       {
         computeConnectedClientsScalarGrid();
       }
     }
     else
     {
       computeClientIndex();
       if (context->hasClient)
       {
         computeConnectedClients();
       }
     }
     if (CServer::serverLevel==2)
     {
       computeWrittenIndex() ;
       if (serverDistribution_!=0) serverDistribution_->partialClear() ;
       if (clientDistribution_!=0) clientDistribution_->partialClear() ;
       outGlobalIndexFromClient.clear() ;
     }
   }

   /*!
      Compute the global of (client) grid to send to server with the global index of each element of grid
      Each element of grid has its own global index associated to a groups of server. We only search for the global index of each element whose
      server is the same, then calculate the global index of grid. This way can reduce so much the time for executing DHT, which only needs to run
      on each element whose size is much smaller than one of whole grid.
      \param [in] indexServerOnElement global index of each element and the rank of server associated with these index
      \param [in] client contextClient
      \param [out] globalIndexOnServer global index of grid and its corresponding rank of server.
   */
   void CGrid::computeIndexByElement(const std::vector<boost::unordered_map<size_t,std::vector<int> > >& indexServerOnElement,
                                     const CContextClient* client,
                                     CClientServerMapping::GlobalIndexMap& globalIndexOnServer)
   {
     int serverSize = client->serverSize;

     std::vector<CDomain*> domList = getDomains();
     std::vector<CAxis*> axisList = getAxis();

     // Some pre-calculations of global index on each element of current grid.
     int nbElement = axis_domain_order.numElements();
     std::vector<CArray<size_t,1> > globalIndexElement(nbElement);
     int domainIdx = 0, axisIdx = 0, scalarIdx = 0;
     std::vector<size_t> elementNGlobal(nbElement);
     elementNGlobal[0] = 1;
     size_t globalSize = 1;
     for (int idx = 0; idx < nbElement; ++idx)
     {
       elementNGlobal[idx] = globalSize;
       size_t elementSize;
       size_t elementGlobalSize = 1;
       if (2 == axis_domain_order(idx)) // This is domain
       {
         elementSize = domList[domainIdx]->i_index.numElements();
         globalIndexElement[idx].resize(elementSize);
         for (int jdx = 0; jdx < elementSize; ++jdx)
         {
           globalIndexElement[idx](jdx) = (domList[domainIdx]->i_index)(jdx) + domList[domainIdx]->ni_glo * (domList[domainIdx]->j_index)(jdx);
         }
         elementGlobalSize = domList[domainIdx]->ni_glo.getValue() * domList[domainIdx]->nj_glo.getValue();
         ++domainIdx;
       }
       else if (1 == axis_domain_order(idx))  // This is axis
       {
         elementSize = axisList[axisIdx]->index.numElements();
         globalIndexElement[idx].resize(elementSize);
         for (int jdx = 0; jdx < elementSize; ++jdx)
         {
           globalIndexElement[idx](jdx) = (axisList[axisIdx]->index)(jdx);
         }
         elementGlobalSize = axisList[axisIdx]->n_glo.getValue();
         ++axisIdx;
       }
       else  // Of course, this is scalar
       {
         globalIndexElement[idx].resize(1);
         globalIndexElement[idx](0) = 0;
         elementGlobalSize = 1;
       }
       globalSize *= elementGlobalSize;
     }

     std::vector<std::vector<bool> > elementOnServer(nbElement, std::vector<bool>(serverSize, false));
     std::vector<boost::unordered_map<int,std::vector<size_t> > > globalElementIndexOnServer(nbElement);
     CArray<int,1> nbIndexOnServer(serverSize); // Number of distributed global index held by each client for each server
     // Number of temporary distributed global index held by each client for each server
     // We have this variable for the case of non-distributed element (often axis) to check the duplicate server rank
     CArray<int,1> nbIndexOnServerTmp(serverSize);
     for (int idx = 0; idx < nbElement; ++idx)
     {
       nbIndexOnServer = 0;
       const boost::unordered_map<size_t,std::vector<int> >& indexServerElement = indexServerOnElement[idx];
       const CArray<size_t,1>& globalIndexElementOnClient = globalIndexElement[idx];
       CClientClientDHTInt clientClientDHT(indexServerElement, client->intraComm);
       clientClientDHT.computeIndexInfoMapping(globalIndexElementOnClient);
       const CClientClientDHTInt::Index2VectorInfoTypeMap& globalIndexElementOnServerMap = clientClientDHT.getInfoIndexMap();
       CClientClientDHTInt::Index2VectorInfoTypeMap::const_iterator itb = globalIndexElementOnServerMap.begin(),
                                                                    ite = globalIndexElementOnServerMap.end(), it;
       for (it = itb; it != ite; ++it)
       {
         const std::vector<int>& tmp = it->second;
         nbIndexOnServerTmp = 0;
         for (int i = 0; i < tmp.size(); ++i)
         {
           if (0 == nbIndexOnServerTmp(tmp[i])) ++nbIndexOnServerTmp(tmp[i]);
         }
         nbIndexOnServer += nbIndexOnServerTmp;
       }

       for (int i = 0; i < serverSize; ++i)
       {
         if (0 != nbIndexOnServer(i))
         {
           globalElementIndexOnServer[idx][i].resize(nbIndexOnServer(i));
           elementOnServer[idx][i] = true;
         }
       }

     nbIndexOnServer = 0;
     for (size_t j = 0; j < globalIndexElementOnServerMap.size(); ++j)
     {
       it = globalIndexElementOnServerMap.find(globalIndexElementOnClient(j));
       if (it != ite)
       {
         const std::vector<int>& tmp = it->second;
         nbIndexOnServerTmp = 0;
         for (int i = 0; i < tmp.size(); ++i)
         {
           if (0 == nbIndexOnServerTmp(tmp[i]))
           {
             globalElementIndexOnServer[idx][tmp[i]][nbIndexOnServer(tmp[i])] = it->first;
             ++nbIndexOnServerTmp(tmp[i]);
           }
         }
         nbIndexOnServer += nbIndexOnServerTmp;
       }
     }
   }

    // Determine server which contain global source index
    std::vector<bool> intersectedProc(serverSize, true);
    for (int idx = 0; idx < nbElement; ++idx)
    {
      std::transform(elementOnServer[idx].begin(), elementOnServer[idx].end(),
                     intersectedProc.begin(), intersectedProc.begin(),
                     std::logical_and<bool>());
    }

    std::vector<int> srcRank;
    for (int idx = 0; idx < serverSize; ++idx)
    {
      if (intersectedProc[idx]) srcRank.push_back(idx);
    }

    // Compute the global index of grid from global index of each element.
    for (int i = 0; i < srcRank.size(); ++i)
    {
      size_t ssize = 1;
      int rankSrc = srcRank[i];
      std::vector<std::vector<size_t>* > globalIndexOfElementTmp(nbElement);
      std::vector<size_t> currentIndex(nbElement,0);
      for (int idx = 0; idx < nbElement; ++idx)
      {
        ssize *= (globalElementIndexOnServer[idx][rankSrc]).size();
        globalIndexOfElementTmp[idx] = &(globalElementIndexOnServer[idx][rankSrc]);
      }
      globalIndexOnServer[rankSrc].resize(ssize);

      std::vector<int> idxLoop(nbElement,0);
      int innnerLoopSize = (globalIndexOfElementTmp[0])->size();
      size_t idx = 0;
      while (idx < ssize)
      {
        for (int ind = 0; ind < nbElement; ++ind)
        {
          if (idxLoop[ind] == (globalIndexOfElementTmp[ind])->size())
          {
            idxLoop[ind] = 0;
            ++idxLoop[ind+1];
          }

          currentIndex[ind] = (*(globalIndexOfElementTmp[ind]))[idxLoop[ind]];
        }

        for (int ind = 0; ind < innnerLoopSize; ++ind)
        {
          currentIndex[0] = (*globalIndexOfElementTmp[0])[ind];
          size_t globalSrcIndex = 0;
          for (int idxElement = 0; idxElement < nbElement; ++idxElement)
          {
            globalSrcIndex += currentIndex[idxElement] * elementNGlobal[idxElement];
          }
          globalIndexOnServer[rankSrc][idx] = globalSrcIndex;
          ++idx;
          ++idxLoop[0];
        }
      }
    }
   }
   //----------------------------------------------------------------

   CGrid* CGrid::createGrid(CDomain* domain)
   {
      std::vector<CDomain*> vecDom(1, domain);
      std::vector<CAxis*> vecAxis;

      return createGrid(vecDom, vecAxis);
   }

   CGrid* CGrid::createGrid(CDomain* domain, CAxis* axis)
   {
      std::vector<CDomain*> vecDom(1, domain);
      std::vector<CAxis*> vecAxis(1, axis);

      return createGrid(vecDom, vecAxis);
   }

   CGrid* CGrid::createGrid(const std::vector<CDomain*>& domains, const std::vector<CAxis*>& axis,
                            const CArray<int,1>& axisDomainOrder)
   {
     std::vector<CScalar*> vecScalar;
     return createGrid(generateId(domains, axis, vecScalar, axisDomainOrder), domains, axis, vecScalar, axisDomainOrder);
   }

   CGrid* CGrid::createGrid(const std::vector<CDomain*>& domains, const std::vector<CAxis*>& axis,
                            const std::vector<CScalar*>& scalars, const CArray<int,1>& axisDomainOrder)
   {
     return createGrid(generateId(domains, axis, scalars, axisDomainOrder), domains, axis, scalars, axisDomainOrder);
   }

   CGrid* CGrid::createGrid(StdString id, const std::vector<CDomain*>& domains, const std::vector<CAxis*>& axis,
                            const std::vector<CScalar*>& scalars, const CArray<int,1>& axisDomainOrder)
   {
      if (axisDomainOrder.numElements() > 0 && axisDomainOrder.numElements() != (domains.size() + axis.size() + scalars.size()))
        ERROR("CGrid* CGrid::createGrid(...)",
              << "The size of axisDomainOrder (" << axisDomainOrder.numElements()
              << ") is not coherent with the number of elements (" << domains.size() + axis.size() <<").");

      CGrid* grid = CGridGroup::get("grid_definition")->createChild(id);
      grid->setDomainList(domains);
      grid->setAxisList(axis);
      grid->setScalarList(scalars);

      // By default, domains are always the first elements of a grid
      if (0 == axisDomainOrder.numElements())
      {
        int size = domains.size() + axis.size() + scalars.size();
        int nb = 0;
        grid->axis_domain_order.resize(size);
        for (int i = 0; i < size; ++i)
        {
          if (i < domains.size()) {
            grid->axis_domain_order(i) = 2;

          }
          else if ((scalars.size() < (size-nb)) < size) {
            grid->axis_domain_order(i) = 1;
          }
          else
            grid->axis_domain_order(i) = 0;
          ++nb;
        }
      }
      else
      {
        grid->axis_domain_order.resize(axisDomainOrder.numElements());
        grid->axis_domain_order = axisDomainOrder;
      }

      grid->solveDomainAxisRefInheritance(true);

      return grid;
   }

   CGrid* CGrid::cloneGrid(const StdString& idNewGrid, CGrid* gridSrc)
   {
     std::vector<CDomain*> domainSrcTmp = gridSrc->getDomains(), domainSrc;
     std::vector<CAxis*> axisSrcTmp = gridSrc->getAxis(), axisSrc;
     std::vector<CScalar*> scalarSrcTmp = gridSrc->getScalars(), scalarSrc;

     for (int idx = 0; idx < domainSrcTmp.size(); ++idx)
     {
       CDomain* domain = CDomain::createDomain();
       domain->duplicateAttributes(domainSrcTmp[idx]);
       domain->duplicateTransformation(domainSrcTmp[idx]);
       domain->solveRefInheritance(true);
       domain->solveInheritanceTransformation();
       domainSrc.push_back(domain);
     }

     for (int idx = 0; idx < axisSrcTmp.size(); ++idx)
     {
       CAxis* axis = CAxis::createAxis();
       axis->duplicateAttributes(axisSrcTmp[idx]);
       axis->duplicateTransformation(axisSrcTmp[idx]);
       axis->solveRefInheritance(true);
       axis->solveInheritanceTransformation();
       axisSrc.push_back(axis);
     }

     for (int idx = 0; idx < scalarSrcTmp.size(); ++idx)
     {
       CScalar* scalar = CScalar::createScalar();
       scalar->duplicateAttributes(scalarSrcTmp[idx]);
       scalar->duplicateTransformation(scalarSrcTmp[idx]);
       scalar->solveRefInheritance(true);
       scalar->solveInheritanceTransformation();
       scalarSrc.push_back(scalar);
     }

      CGrid* grid = CGrid::createGrid(idNewGrid, domainSrc, axisSrc, scalarSrc, gridSrc->axis_domain_order);

      return grid;
   }

   StdString CGrid::generateId(const std::vector<CDomain*>& domains, const std::vector<CAxis*>& axis,
                               const std::vector<CScalar*>& scalars, const CArray<int,1>& axisDomainOrder)
   {
      if (axisDomainOrder.numElements() > 0 && axisDomainOrder.numElements() != (domains.size() + axis.size() + scalars.size()))
        ERROR("CGrid* CGrid::generateId(...)",
              << "The size of axisDomainOrder (" << axisDomainOrder.numElements()
              << ") is not coherent with the number of elements (" << domains.size() + axis.size() <<").");

      std::ostringstream id;

      if (domains.empty() && axis.empty() && !scalars.empty())
        id << "__scalar_";

      if (0 != (domains.size() + axis.size() + scalars.size()))
      {
        id << "__grid";

        if (0 == axisDomainOrder.numElements())
        {
          for (size_t i = 0; i < domains.size(); ++i) id << "_" << domains[i]->getId();
          for (size_t i = 0; i < axis.size(); ++i) id << "_" << axis[i]->getId();
          for (size_t i = 0; i < scalars.size(); ++i) id << "_" << scalars[i]->getId();
        }
        else
        {
          size_t iDomain = 0, iAxis = 0, iScalar = 0;
          for (size_t i = 0; i < axisDomainOrder.numElements(); ++i)
          {
            if (2 == axisDomainOrder(i))
              id << "_" << domains[iDomain++]->getId();
            else if (1 == axisDomainOrder(i))
              id << "_" << axis[iAxis++]->getId();
            else
              id << "_" << scalars[iScalar++]->getId();
          }
        }

        id << "__";
      }

      return id.str();
   }

   StdString CGrid::generateId(const CGrid* gridSrc, const CGrid* gridDest)
   {
     StdString idSrc  = gridSrc->getId();
     StdString idDest = gridDest->getId();

     std::ostringstream id;
     id << idSrc << "__" << idDest;

     return id.str();
   }

   //----------------------------------------------------------------

   CDomainGroup* CGrid::getVirtualDomainGroup() const
   {
     return this->vDomainGroup_;
   }

   CAxisGroup* CGrid::getVirtualAxisGroup() const
   {
     return this->vAxisGroup_;
   }

   CScalarGroup* CGrid::getVirtualScalarGroup() const
   {
     return this->vScalarGroup_;
   }

/*
   void CGrid::outputField(int rank, const CArray<double, 1>& stored, double* field)
   {
     const CArray<size_t,1>& out_i = outIndexFromClient[rank];
     StdSize numElements = stored.numElements();
     for (StdSize n = 0; n < numElements; ++n)
     {
       field[out_i(n)] = stored(n);
     }
   }

   void CGrid::inputField(int rank, const double* const field, CArray<double,1>& stored)
   {
     const CArray<size_t,1>& out_i = outIndexFromClient[rank];
     StdSize numElements = stored.numElements();
     for (StdSize n = 0; n < numElements; ++n)
     {
       stored(n) = field[out_i(n)];
     }
   }

   void CGrid::outputCompressedField(int rank, const CArray<double,1>& stored, double* field)
   {
     const CArray<size_t,1>& out_i = compressedOutIndexFromClient[rank];
     StdSize numElements = stored.numElements();
     for (StdSize n = 0; n < numElements; ++n)
     {
       field[out_i(n)] = stored(n);
     }
   }
*/
   //----------------------------------------------------------------

   void CGrid::storeField_arr(const double* const data, CArray<double, 1>& stored) const
   {
      const StdSize size = storeIndex_client.numElements();

      stored.resize(size);
      for(StdSize i = 0; i < size; i++) stored(i) = data[storeIndex_client(i)];
   }

   void CGrid::restoreField_arr(const CArray<double, 1>& stored, double* const data) const
   {
      const StdSize size = storeIndex_client.numElements();

      for(StdSize i = 0; i < size; i++) data[storeIndex_client(i)] = stored(i);
   }

   void CGrid::uncompressField_arr(const double* const data, CArray<double, 1>& out) const
   {
      const std::vector<int>& localMaskedDataIndex = clientDistribution_->getLocalMaskedDataIndexOnClient();
      const int size = localMaskedDataIndex.size();
      
      for(int i = 0; i < size; ++i) out(localMaskedDataIndex[i]) = data[i];
   }


  void CGrid::computeClientIndexScalarGrid()
  {
    CContext* context = CContext::getCurrent();    
//    int nbSrvPools = (context->hasServer) ? (context->hasClient ? context->clientPrimServer.size() : 1) : 1; // This should be changed soon
//    for (int p = 0; p < nbSrvPools; ++p)
    {
//      CContextClient* client = (context->hasServer) ? (context->hasClient ? context->clientPrimServer[p] : context->client)
//                                                    : context->client;
      CContextClient* client = context->client;

      int rank = client->clientRank;

      clientDistribution_ = new CDistributionClient(rank, this);

      storeIndex_client.resize(1);
      storeIndex_client(0) = 0;      

      if (0 != serverDistribution_)
      {
        map<int, CArray<size_t, 1> >::iterator itb = outGlobalIndexFromClient.begin(),
                                               ite = outGlobalIndexFromClient.end(), it;
        for (it = itb; it != ite; ++it)
        {
          int rank = it->first;
          CArray<size_t,1>& globalIndex = outGlobalIndexFromClient[rank];
          outLocalIndexStoreOnClient.insert(make_pair(rank, CArray<size_t,1>(globalIndex.numElements())));
          CArray<size_t,1>& localIndex = outLocalIndexStoreOnClient[rank];
          if (1 != globalIndex.numElements())
            ERROR("void CGrid::computeClientIndexScalarGrid()",
              << "Something wrong happened. "
              << "Number of received global index on scalar grid should equal to 1" 
              << "Number of received global index " << globalIndex.numElements() << ".");

          localIndex(0) = globalIndex(0);
        }
      }
    }
  }

  void CGrid::computeConnectedClientsScalarGrid()
  {
    CContext* context = CContext::getCurrent();    
    int nbSrvPools = (context->clientPrimServer.size()==0) ? 1 : context->clientPrimServer.size();
    connectedServerRank_.clear();
    connectedDataSize_.clear();
    nbSenders.clear();

    for (int p = 0; p < nbSrvPools; ++p)
    {
      CContextClient* client = (context->clientPrimServer.size()==0) ? context->client : context->clientPrimServer[p];
      int receiverSize = client->serverSize;

//      connectedServerRank_[client].clear();

      if (connectedServerRank_.find(receiverSize)==connectedServerRank_.end())
      {
        if (client->isServerLeader())
        {
          const std::list<int>& ranks = client->getRanksServerLeader();
          for (std::list<int>::const_iterator itRank = ranks.begin(), itRankEnd = ranks.end(); itRank != itRankEnd; ++itRank)
          {
            int rank = *itRank;
            int nb = 1;
            connectedServerRank_[receiverSize].push_back(rank);
            connectedDataSize_[receiverSize][rank] = nb;
            nbSenders[receiverSize][rank] = nb;
          }
        }
        else
        {
          const std::list<int>& ranks = client->getRanksServerNotLeader();
          for (std::list<int>::const_iterator itRank = ranks.begin(), itRankEnd = ranks.end(); itRank != itRankEnd; ++itRank)
          {
            int rank = *itRank;
            int nb = 1;
            connectedServerRank_[receiverSize].push_back(rank);
            connectedDataSize_[receiverSize][rank] = nb;
            nbSenders[receiverSize][rank] = nb;
          }
        }
      }
      isDataDistributed_ = false;
    }
  }

  void CGrid::sendIndexScalarGrid()
  {
    CContext* context = CContext::getCurrent();
    storeIndex_toSrv.clear();
    std::list<CContextClient*>::iterator it;

    for (it=clients.begin(); it!=clients.end(); ++it)
    {
      CContextClient* client = *it;
      int receiverSize = client->serverSize;

      CEventClient event(getType(), EVENT_ID_INDEX);
      list<CMessage> listMsg;
      list<CArray<size_t,1> > listOutIndex;

      if (client->isServerLeader())
      {
        const std::list<int>& ranks = client->getRanksServerLeader();
        for (std::list<int>::const_iterator itRank = ranks.begin(), itRankEnd = ranks.end(); itRank != itRankEnd; ++itRank)
        {
          int rank = *itRank;
          int nb = 1;
          storeIndex_toSrv[client].insert(std::make_pair(rank, CArray<int,1>(nb)));
          listOutIndex.push_back(CArray<size_t,1>(nb));

          CArray<int, 1>& outLocalIndexToServer = storeIndex_toSrv[client][rank];
          CArray<size_t, 1>& outGlobalIndexOnServer = listOutIndex.back();

          for (int k = 0; k < nb; ++k)
          {
            outGlobalIndexOnServer(k) = 0;
            outLocalIndexToServer(k)  = 0;
          }

          if (context->hasClient && !context->hasServer)
            storeIndex_fromSrv.insert(std::make_pair(rank, CArray<int,1>(outLocalIndexToServer)));

          listMsg.push_back(CMessage());
          listMsg.back() << getId( )<< isDataDistributed_ << isCompressible_ << listOutIndex.back();

          event.push(rank, 1, listMsg.back());
        }
        client->sendEvent(event);
      }
      else
      {
        const std::list<int>& ranks = client->getRanksServerNotLeader();
        for (std::list<int>::const_iterator itRank = ranks.begin(), itRankEnd = ranks.end(); itRank != itRankEnd; ++itRank)
        {
          int rank = *itRank;
          int nb = 1;          
          CArray<int, 1> outLocalIndexToServer(nb);
          for (int k = 0; k < nb; ++k)
          {
            outLocalIndexToServer(k)  = 0;
          }

          if (context->hasClient && !context->hasServer)
            storeIndex_fromSrv.insert(std::make_pair(rank, CArray<int,1>(outLocalIndexToServer)));
        }
        client->sendEvent(event);
      }
    }
  }

  void CGrid::sendIndex(void)
  {
    CContext* context = CContext::getCurrent();
    storeIndex_toSrv.clear();
    std::list<CContextClient*>::iterator it;

    for (it=clients.begin(); it!=clients.end(); ++it)
    {
      CContextClient* client = *it;
      int receiverSize = client->serverSize;

      CEventClient event(getType(), EVENT_ID_INDEX);
      int rank;
      list<CMessage> listMsg;
      list<CArray<size_t,1> > listOutIndex;
      const CDistributionClient::GlobalLocalDataMap& globalLocalIndexSendToServer = clientDistribution_->getGlobalLocalDataSendToServer();
      CDistributionClient::GlobalLocalDataMap::const_iterator itbIndex = globalLocalIndexSendToServer.begin(), itIndex,
                                                              iteIndex = globalLocalIndexSendToServer.end();
      itIndex = itbIndex;                                                              

      if (!doGridHaveDataDistributed(client))
      {
        if (client->isServerLeader())
        {
          int indexSize = globalLocalIndexSendToServer.size();
          CArray<size_t,1> outGlobalIndexOnServer(indexSize);
          CArray<int,1> outLocalIndexToServer(indexSize);
          for (int idx = 0; itIndex != iteIndex; ++itIndex, ++idx)
          {
            outGlobalIndexOnServer(idx) = itIndex->first;
            outLocalIndexToServer(idx) = itIndex->second;
          }

          const std::list<int>& ranks = client->getRanksServerLeader();
          for (std::list<int>::const_iterator itRank = ranks.begin(), itRankEnd = ranks.end(); itRank != itRankEnd; ++itRank)
          {
            storeIndex_toSrv[client].insert(std::make_pair(*itRank, CArray<int,1>(outLocalIndexToServer)));
            if (context->hasClient && !context->hasServer)
              storeIndex_fromSrv.insert(std::make_pair(*itRank, CArray<int,1>(outLocalIndexToServer)));
            
            listOutIndex.push_back(CArray<size_t,1>(outGlobalIndexOnServer));

            listMsg.push_back(CMessage());
            listMsg.back() << getId() << isDataDistributed_ << isCompressible_ << listOutIndex.back();

            event.push(*itRank, 1, listMsg.back());
          }
          client->sendEvent(event);
        }
        else
        {
           int indexSize = globalLocalIndexSendToServer.size();
           CArray<int,1> outLocalIndexToServer(indexSize);
           for (int idx = 0; itIndex != iteIndex; ++itIndex, ++idx)
           {
             outLocalIndexToServer(idx) = itIndex->second;
           }

           const std::list<int>& ranks = client->getRanksServerNotLeader();
           for (std::list<int>::const_iterator itRank = ranks.begin(), itRankEnd = ranks.end(); itRank != itRankEnd; ++itRank)
           {
             storeIndex_fromSrv.insert(std::make_pair(*itRank, CArray<int,1>(outLocalIndexToServer)));
           }
           client->sendEvent(event);
         }
      }
      else
      {
        CClientServerMapping::GlobalIndexMap::const_iterator iteGlobalMap, itGlobalMap;
        itGlobalMap = globalIndexOnServer_[receiverSize].begin();
        iteGlobalMap = globalIndexOnServer_[receiverSize].end();

        std::map<int,std::vector<int> >localIndexTmp;
        std::map<int,std::vector<size_t> > globalIndexTmp;
        for (; itGlobalMap != iteGlobalMap; ++itGlobalMap)
        {
          int serverRank = itGlobalMap->first;
          int indexSize = itGlobalMap->second.size();
          const std::vector<size_t>& indexVec = itGlobalMap->second;
          for (int idx = 0; idx < indexSize; ++idx)
          {
            itIndex = globalLocalIndexSendToServer.find(indexVec[idx]);
            if (iteIndex != itIndex)
            {
              globalIndexTmp[serverRank].push_back(itIndex->first);
              localIndexTmp[serverRank].push_back(itIndex->second);
            }
          }
        }

        for (int ns = 0; ns < connectedServerRank_[receiverSize].size(); ++ns)
        {
          rank = connectedServerRank_[receiverSize][ns];
          int nb = 0;
          if (globalIndexTmp.end() != globalIndexTmp.find(rank))
            nb = globalIndexTmp[rank].size();

          storeIndex_toSrv[client].insert(make_pair(rank, CArray<int,1>(nb)));
          listOutIndex.push_back(CArray<size_t,1>(nb));

          CArray<int, 1>& outLocalIndexToServer = storeIndex_toSrv[client][rank];
          CArray<size_t, 1>& outGlobalIndexOnServer = listOutIndex.back();

          for (int k = 0; k < nb; ++k)
          {
            outGlobalIndexOnServer(k) = globalIndexTmp[rank].at(k);
            outLocalIndexToServer(k)  = localIndexTmp[rank].at(k);
          }

          storeIndex_fromSrv.insert(make_pair(rank, CArray<int,1>(outLocalIndexToServer)));
          listMsg.push_back(CMessage());
          listMsg.back() << getId() << isDataDistributed_ << isCompressible_ << listOutIndex.back();

          event.push(rank, nbSenders[receiverSize][rank], listMsg.back());
        }

        client->sendEvent(event);
      }
    }
  }

  void CGrid::recvIndex(CEventServer& event)
  {
    string gridId;
    vector<int> ranks;
    vector<CBufferIn*> buffers;

    list<CEventServer::SSubEvent>::iterator it;
    for (it = event.subEvents.begin(); it != event.subEvents.end(); ++it)
    {
      ranks.push_back(it->rank);
      CBufferIn* buffer = it->buffer;
      *buffer >> gridId;
      buffers.push_back(buffer);
    }
    get(gridId)->recvIndex(ranks, buffers);
  }

  void CGrid::recvIndex(vector<int> ranks, vector<CBufferIn*> buffers)
  {
    CContext* context = CContext::getCurrent();
    connectedServerRankRead_ = ranks;

    int nbSrvPools = (context->hasServer) ? (context->hasClient ? context->clientPrimServer.size() : 1) : 1;
    nbSrvPools = 1;    
    nbReadSenders.clear();
    for (int p = 0; p < nbSrvPools; ++p)
    {
      CContextServer* server = (!context->hasClient) ? context->server : context->serverPrimServer[p];
      CContextClient* client = context->client;   //(!context->hasClient) ? context->client : context->clientPrimServer[p];
      
      int idx = 0, numElement = axis_domain_order.numElements();
      int ssize = numElement;
      std::vector<int> indexMap(numElement);
      for (int i = 0; i < numElement; ++i)
      {
        indexMap[i] = idx;
        if (2 == axis_domain_order(i))
        {
          ++ssize;
          idx += 2;
        }
        else
          ++idx;
      }

      for (int n = 0; n < ranks.size(); n++)
      {
        int rank = ranks[n];
        CBufferIn& buffer = *buffers[n];

        buffer >> isDataDistributed_ >> isCompressible_;
        size_t dataSize = 0;

        if (0 == serverDistribution_)
        {
          int axisId = 0, domainId = 0, scalarId = 0, globalSize = 1;
          std::vector<CDomain*> domainList = getDomains();
          std::vector<CAxis*> axisList = getAxis();
          std::vector<int> nZoomBegin(ssize), nZoomSize(ssize), nGlob(ssize), nZoomBeginGlobal(ssize), nGlobElement(numElement);
          std::vector<CArray<int,1> > globalZoomIndex(numElement);
          for (int i = 0; i < numElement; ++i)
          {
            nGlobElement[i] = globalSize;
            if (2 == axis_domain_order(i)) //domain
            {
              nZoomBegin[indexMap[i]] = domainList[domainId]->zoom_ibegin;
              nZoomSize[indexMap[i]]  = domainList[domainId]->zoom_ni;
              nZoomBeginGlobal[indexMap[i]] = domainList[domainId]->global_zoom_ibegin;              
              nGlob[indexMap[i]] = domainList[domainId]->ni_glo;

              nZoomBegin[indexMap[i] + 1] = domainList[domainId]->zoom_jbegin;
              nZoomSize[indexMap[i] + 1] = domainList[domainId]->zoom_nj;
              nZoomBeginGlobal[indexMap[i] + 1] = domainList[domainId]->global_zoom_jbegin;              
              nGlob[indexMap[i] + 1] = domainList[domainId]->nj_glo;

              {
                int count = 0;
                globalZoomIndex[i].resize(nZoomSize[indexMap[i]]*nZoomSize[indexMap[i]+1]);
                for (int jdx = 0; jdx < nZoomSize[indexMap[i]+1]; ++jdx)
                  for (int idx = 0; idx < nZoomSize[indexMap[i]]; ++idx)                
                  {
                    globalZoomIndex[i](count) = (nZoomBegin[indexMap[i]] + idx) + (nZoomBegin[indexMap[i]+1] + jdx) * nGlob[indexMap[i]];
                    ++count;
                  }
              }

              ++domainId;
            }
            else if (1 == axis_domain_order(i)) // axis
            {
              nZoomBegin[indexMap[i]] = axisList[axisId]->zoom_begin;
              nZoomSize[indexMap[i]]  = axisList[axisId]->zoom_n;
              nZoomBeginGlobal[indexMap[i]] = axisList[axisId]->global_zoom_begin;              
              nGlob[indexMap[i]] = axisList[axisId]->n_glo;     
              if (axisList[axisId]->zoomByIndex())
              {
                globalZoomIndex[i].reference(axisList[axisId]->zoom_index);                
              }
              else
              {
                globalZoomIndex[i].resize(nZoomSize[indexMap[i]]);
                for (int idx = 0; idx < nZoomSize[indexMap[i]]; ++idx)
                  globalZoomIndex[i](idx) = nZoomBegin[indexMap[i]] + idx;
              }

              ++axisId;
            }
            else // scalar
            { 
              nZoomBegin[indexMap[i]] = 0;
              nZoomSize[indexMap[i]]  = 1;
              nZoomBeginGlobal[indexMap[i]] = 0;              
              nGlob[indexMap[i]] = 1;
              globalZoomIndex[i].resize(1);
              globalZoomIndex[i](0) = 0;
              ++scalarId;
            }
          }
          dataSize = 1;

          for (int i = 0; i < nZoomSize.size(); ++i)
            dataSize *= nZoomSize[i];
          serverDistribution_ = new CDistributionServer(server->intraCommRank, 
                                                        globalZoomIndex, axis_domain_order,
                                                        nZoomBegin, nZoomSize, nZoomBeginGlobal, nGlob);
        }

        CArray<size_t,1> outIndex;
        buffer >> outIndex;
        outGlobalIndexFromClient.insert(std::make_pair(rank, outIndex));
        connectedDataSizeRead_[rank] = outIndex.numElements();

        if (doGridHaveDataDistributed(client))
        {}
        else
        {
          // THE PROBLEM HERE IS THAT DATA CAN BE NONDISTRIBUTED ON CLIENT AND DISTRIBUTED ON SERVER
          // BELOW IS THE TEMPORARY FIX only for a single type of element (domain, asix, scalar)
          dataSize = serverDistribution_->getGridSize();
        }
        writtenDataSize_ += dataSize;
      }


      // Compute mask of the current grid
      {
        int axisId = 0, domainId = 0, scalarId = 0, globalSize = 1;
        std::vector<CDomain*> domainList = getDomains();
        std::vector<CAxis*> axisList = getAxis();
        int dimSize = 2 * domainList.size() + axisList.size();
        std::vector<int> nBegin(dimSize), nSize(dimSize), nGlob(dimSize), nBeginGlobal(dimSize);        
        for (int i = 0; i < numElement; ++i)
        {          
          if (2 == axis_domain_order(i)) //domain
          {
            nBegin[indexMap[i]] = domainList[domainId]->ibegin;
            nSize[indexMap[i]]  = domainList[domainId]->ni;
            nBeginGlobal[indexMap[i]] = 0;              
            nGlob[indexMap[i]] = domainList[domainId]->ni_glo;

            nBegin[indexMap[i] + 1] = domainList[domainId]->jbegin;
            nSize[indexMap[i] + 1] = domainList[domainId]->nj;
            nBeginGlobal[indexMap[i] + 1] = 0;              
            nGlob[indexMap[i] + 1] = domainList[domainId]->nj_glo;

            ++domainId;
          }
          else if (1 == axis_domain_order(i)) // axis
          {
            nBegin[indexMap[i]] = axisList[axisId]->begin;
            nSize[indexMap[i]]  = axisList[axisId]->n;
            nBeginGlobal[indexMap[i]] = 0;              
            nGlob[indexMap[i]] = axisList[axisId]->n_glo;              
            ++axisId;
          }
          else // scalar
          {  
          }
        }
        
        if (nSize.empty()) // Scalar grid
        {
          nBegin.push_back(0);
          nSize.push_back(1);
          nBeginGlobal.push_back(0);              
          nGlob.push_back(1);  
        }

        modifyMaskSize(nSize, false);

        // These below codes are reserved for future
        CDistributionServer srvDist(server->intraCommRank, nBegin, nSize, nBeginGlobal, nGlob); 
        map<int, CArray<size_t, 1> >::iterator itb = outGlobalIndexFromClient.begin(),
                                               ite = outGlobalIndexFromClient.end(), it;  
        const CDistributionServer::GlobalLocalMap&  globalLocalMask = srvDist.getGlobalLocalIndex();
        CDistributionServer::GlobalLocalMap::const_iterator itSrv;
        size_t nb = 0;
        for (it = itb; it != ite; ++it)
        {
          CArray<size_t,1>& globalInd = it->second;
          for (size_t idx = 0; idx < globalInd.numElements(); ++idx)
          {
            if (globalLocalMask.end() != globalLocalMask.find(globalInd(idx))) ++nb;
          }
        }
        
        CArray<int,1> indexToModify(nb);
        nb = 0;    
        for (it = itb; it != ite; ++it)
        {
          CArray<size_t,1>& globalInd = it->second;
          for (size_t idx = 0; idx < globalInd.numElements(); ++idx)
          {
            itSrv = globalLocalMask.find(globalInd(idx));
            if (globalLocalMask.end() != itSrv) 
            {
              indexToModify(nb) = itSrv->second;
              ++nb;
            }
          }
        }

        modifyMask(indexToModify, true);
      }

      if (isScalarGrid()) return;

      nbReadSenders[client] = CClientServerMappingDistributed::computeConnectedClients(context->client->serverSize, context->client->clientSize, context->client->intraComm, ranks);
    }
  }

  /*
     Compute on the fly the global dimension of a grid with its elements
     \param[in/out] globalDim global dimension of grid
     \param[in] domains list of its domains
     \param[in] axiss list of its axis
     \param[in] scalars list of its scalars
     \param[in] axisDomainOrder the order of element in a grid (e.g: scalar then axis)
     \return The dimension of which we do distribution (often for server)
  */
  int CGrid::computeGridGlobalDimension(std::vector<int>& globalDim,
                                        const std::vector<CDomain*> domains,
                                        const std::vector<CAxis*> axis,
                                        const std::vector<CScalar*> scalars,
                                        const CArray<int,1>& axisDomainOrder)
  {
 //   globalDim.resize(domains.size()*2+axis.size()+scalars.size());
    globalDim.resize(domains.size()*2+axis.size());
    int positionDimensionDistributed = 1;
    int idx = 0, idxDomain = 0, idxAxis = 0, idxScalar = 0;
    for (int i = 0; i < axisDomainOrder.numElements(); ++i)
    {
      if (2 == axisDomainOrder(i))
      {
        if (!(domains[idxDomain]->type.isEmpty()) && (domains[idxDomain]->type==CDomain::type_attr::unstructured))
        {
          positionDimensionDistributed = idx;
        }
        else
        {
          positionDimensionDistributed = idx +1;
        }

        globalDim[idx]   = domains[idxDomain]->ni_glo.getValue();
        globalDim[idx+1] = domains[idxDomain]->nj_glo.getValue();

        ++idxDomain;
        idx += 2;
      }
      else if (1 == axisDomainOrder(i))
      {
        globalDim[idx] = axis[idxAxis]->n_glo.getValue();
        ++idxAxis;
        ++idx;
      }
      else
      {
//        globalDim[idx] = 1;
        ++idxScalar;
//        ++idx;
      }
    }

    return positionDimensionDistributed;
  }

  // Retrieve the global dimension of grid
  std::vector<int> CGrid::getGlobalDimension()
  {
    std::vector<int> globalDim;
    computeGridGlobalDimension(globalDim, getDomains(), getAxis(), getScalars(), axis_domain_order);

    return globalDim;
  }

  // Retrieve dimension on which we do distribution (Very often, it should be 2nd dimension)
  int CGrid::getDistributedDimension()
  {
    std::vector<int> globalDim;
    return computeGridGlobalDimension(globalDim, getDomains(), getAxis(), getScalars(), axis_domain_order);    
  }

  bool CGrid::isScalarGrid() const
  {
    return (axisList_.empty() && domList_.empty());
  }

  /*!
    Verify whether one server need to write data
    There are some cases on which one server has nodata to write. For example, when we
    just only want to zoom on a domain.
  */
  bool CGrid::doGridHaveDataToWrite()
  {
     return (0 != writtenDataSize_);
  }

  /*!
    Return size of data which is written on each server
    Whatever dimension of a grid, data which are written on server must be presented as
    an one dimension array.
    \return size of data written on server
  */
  size_t CGrid::getWrittenDataSize() const
  {
    return writtenDataSize_;
  }

  /*!
    Returns the number of indexes written by each server.
    \return the number of indexes written by each server
  */
  int CGrid::getNumberWrittenIndexes() const
  {
    return numberWrittenIndexes_;
  }

  /*!
    Returns the total number of indexes written by the servers.
    \return the total number of indexes written by the servers
  */
  int CGrid::getTotalNumberWrittenIndexes() const
  {
    return totalNumberWrittenIndexes_;
  }

  /*!
    Returns the offset of indexes written by each server.
    \return the offset of indexes written by each server
  */
  int CGrid::getOffsetWrittenIndexes() const
  {
    return offsetWrittenIndexes_;
  }

  CDistributionServer* CGrid::getDistributionServer()
  {
    return serverDistribution_;
  }

  CDistributionClient* CGrid::getDistributionClient()
  {
    return clientDistribution_;
  }

  bool CGrid::doGridHaveDataDistributed(CContextClient* client)
  {
    if (isScalarGrid()) return false;
    else if (0 != client)
    {
      return  (isDataDistributed_ ||  (1 != client->clientSize) || (1 != client->serverSize));
    }
    else
      return isDataDistributed_;    
  }

   /*!
   \brief Dispatch event received from client
      Whenever a message is received in buffer of server, it will be processed depending on
   its event type. A new event type should be added in the switch list to make sure
   it processed on server side.
   \param [in] event: Received message
   */
  bool CGrid::dispatchEvent(CEventServer& event)
  {

    if (SuperClass::dispatchEvent(event)) return true;
    else
    {
      switch(event.type)
      {
        case EVENT_ID_INDEX :
          recvIndex(event);
          return true;
          break;

         case EVENT_ID_ADD_DOMAIN :
           recvAddDomain(event);
           return true;
           break;

         case EVENT_ID_ADD_AXIS :
           recvAddAxis(event);
           return true;
           break;

         case EVENT_ID_ADD_SCALAR :
           recvAddScalar(event);
           return true;
           break;
        default :
          ERROR("bool CDomain::dispatchEvent(CEventServer& event)",
                << "Unknown Event");
          return false;
      }
    }
  }

   ///---------------------------------------------------------------

   CDomain* CGrid::addDomain(const std::string& id)
   {
     order_.push_back(2);
     axis_domain_order.resize(order_.size());
     for (int idx = 0; idx < order_.size(); ++idx) axis_domain_order(idx)=order_[idx];
     return vDomainGroup_->createChild(id);
   }

   CAxis* CGrid::addAxis(const std::string& id)
   {
     order_.push_back(1);
     axis_domain_order.resize(order_.size());
     for (int idx = 0; idx < order_.size(); ++idx) axis_domain_order(idx)=order_[idx];
     return vAxisGroup_->createChild(id);
   }

   CScalar* CGrid::addScalar(const std::string& id)
   {
     order_.push_back(0);
     axis_domain_order.resize(order_.size());
     for (int idx = 0; idx < order_.size(); ++idx) axis_domain_order(idx)=order_[idx];
     return vScalarGroup_->createChild(id);
   }

   //! Change virtual field group to a new one
   void CGrid::setVirtualDomainGroup(CDomainGroup* newVDomainGroup)
   {
      this->vDomainGroup_ = newVDomainGroup;
   }

   //! Change virtual variable group to new one
   void CGrid::setVirtualAxisGroup(CAxisGroup* newVAxisGroup)
   {
      this->vAxisGroup_ = newVAxisGroup;
   }

   //! Change virtual variable group to new one
   void CGrid::setVirtualScalarGroup(CScalarGroup* newVScalarGroup)
   {
      this->vScalarGroup_ = newVScalarGroup;
   }

   /*!
   \brief Send a message to create a domain on server side
   \param[in] id String identity of domain that will be created on server
   */
   void CGrid::sendAddDomain(const string& id)
   {
      sendAddItem(id, (int)EVENT_ID_ADD_DOMAIN);
   }

   /*!
   \brief Send a message to create an axis on server side
   \param[in] id String identity of axis that will be created on server
   */
   void CGrid::sendAddAxis(const string& id)
   {
      sendAddItem(id, (int)EVENT_ID_ADD_AXIS);
   }

   /*!
   \brief Send a message to create a scalar on server side
   \param[in] id String identity of scalar that will be created on server
   */
   void CGrid::sendAddScalar(const string& id)
   {
      sendAddItem(id, (int)EVENT_ID_ADD_SCALAR);
   }

   /*!
   \brief Receive a message annoucing the creation of a domain on server side
   \param[in] event Received event
   */
   void CGrid::recvAddDomain(CEventServer& event)
   {

      CBufferIn* buffer = event.subEvents.begin()->buffer;
      string id;
      *buffer >> id;
      get(id)->recvAddDomain(*buffer);
   }

   /*!
   \brief Receive a message annoucing the creation of a domain on server side
   \param[in] buffer Buffer containing message
   */
   void CGrid::recvAddDomain(CBufferIn& buffer)
   {
      string id;
      buffer >> id;
      addDomain(id);
   }

   /*!
   \brief Receive a message annoucing the creation of an axis on server side
   \param[in] event Received event
   */
   void CGrid::recvAddAxis(CEventServer& event)
   {

      CBufferIn* buffer = event.subEvents.begin()->buffer;
      string id;
      *buffer >> id;
      get(id)->recvAddAxis(*buffer);
   }

   /*!
   \brief Receive a message annoucing the creation of an axis on server side
   \param[in] buffer Buffer containing message
   */
   void CGrid::recvAddAxis(CBufferIn& buffer)
   {
      string id;
      buffer >> id;
      addAxis(id);
   }

   /*!
   \brief Receive a message annoucing the creation of an scalar on server side
   \param[in] event Received event
   */
   void CGrid::recvAddScalar(CEventServer& event)
   {

      CBufferIn* buffer = event.subEvents.begin()->buffer;
      string id;
      *buffer >> id;
      get(id)->recvAddScalar(*buffer);
   }

   /*!
   \brief Receive a message annoucing the creation of an scalar on server side
   \param[in] buffer Buffer containing message
   */
   void CGrid::recvAddScalar(CBufferIn& buffer)
   {
      string id;
      buffer >> id;
      addScalar(id);
   }

  /*!
  \brief Solve domain and axis references
  As field, domain and axis can refer to other domains or axis. In order to inherit correctly
  all attributes from their parents, they should be processed with this function
  \param[in] apply inherit all attributes of parents (true)
  */
  void CGrid::solveDomainAxisRefInheritance(bool apply)
  {
    CContext* context = CContext::getCurrent();
    unsigned int vecSize, i;
    std::vector<StdString>::iterator it, itE;
    setDomainList();
    it = domList_.begin(); itE = domList_.end();
    for (; it != itE; ++it)
    {
      CDomain* pDom = CDomain::get(*it);
      if (context->hasClient && !context->hasServer)      
      {
        pDom->solveRefInheritance(apply);
        pDom->solveInheritanceTransformation();
      }
    }

    setAxisList();
    it = axisList_.begin(); itE = axisList_.end();
    for (; it != itE; ++it)
    {
      CAxis* pAxis = CAxis::get(*it);
      if (context->hasClient && !context->hasServer)
      {
        pAxis->solveRefInheritance(apply);
        pAxis->solveInheritanceTransformation();
      }
    }

    setScalarList();
    it = scalarList_.begin(); itE = scalarList_.end();
    for (; it != itE; ++it)
    {
      CScalar* pScalar = CScalar::get(*it);
      if (context->hasClient && !context->hasServer)
      {
        pScalar->solveRefInheritance(apply);
        pScalar->solveInheritanceTransformation();
      }
    }
  }

  bool CGrid::isTransformed()
  {
    return isTransformed_;
  }

  void CGrid::setTransformed()
  {
    isTransformed_ = true;
  }

  CGridTransformation* CGrid::getTransformations()
  {
    return transformations_;
  }

  void CGrid::addTransGridSource(CGrid* gridSrc)
  {
    if (gridSrc_.end() == gridSrc_.find(gridSrc))
      gridSrc_.insert(make_pair(gridSrc,make_pair(false,"")));
  }

  std::map<CGrid*,std::pair<bool,StdString> >& CGrid::getTransGridSource()
  {
    return gridSrc_;
  }

  /*!
     Complete all the necessary (and lacking) attributes of a grid
     This function is similar to gridTransformation but works only (till now) on generate_rectilinear_domain transformation
  */
  void CGrid::completeGrid(CGrid* transformGridSrc)
  {
    if (0 != transformGridSrc)
    {
      if (axis_domain_order.numElements() != transformGridSrc->axis_domain_order.numElements())
      {
        ERROR("CGrid::completeGrid(CGrid* transformGridSrc)",
             << "Two grids have different number of elements. " << std::endl
             << "Number of element of grid destination " << this->getId() << " is " << axis_domain_order.numElements() << std::endl
             << "Number of element of grid source " << transformGridSrc->getId() << " is " << transformGridSrc->axis_domain_order.numElements());
      }
    }

    if (isGenerated()) return;
    setGenerated();

    CGridGenerate gridGenerate(this, transformGridSrc);
    gridGenerate.completeGrid();
  }

  bool CGrid::isGenerated()
  {
    return isGenerated_;
  }

  void CGrid::setGenerated()
  {
    isGenerated_ = true;
  }

  void CGrid::transformGrid(CGrid* transformGridSrc)
  {
    if (!transformGridSrc)
      ERROR("CGrid::transformGrid(CGrid* transformGridSrc)",
            << "Impossible to transform grid '" << getId() << "', the source grid is null.");

    if (isTransformed()) return;
    setTransformed();
    if (axis_domain_order.numElements() != transformGridSrc->axis_domain_order.numElements())
    {
      ERROR("CGrid::transformGrid(CGrid* transformGridSrc)",
           << "Two grids have different number of elements. " << std::endl
           << "Number of element of grid destination " << this->getId() << " is " << axis_domain_order.numElements() << std::endl
           << "Number of element of grid source " << transformGridSrc->getId() << " is " << transformGridSrc->axis_domain_order.numElements());
    }
    else
    {
    }

    transformations_ = new CGridTransformation(this, transformGridSrc);
    transformations_->computeAll();
    if (0 < transformations_->getNbAlgo()) hasTransform_ = true;

    // Ok, now need to compute index of grid source
    transformGridSrc->checkMaskIndex(false);
  }

  bool CGrid::hasTransform()
  {
    if (hasTransform_) return hasTransform_;

    std::vector<CDomain*> domList = getDomains();
    std::vector<CAxis*> axisList = getAxis();
    std::vector<CScalar*> scalarList = getScalars();

    for (int idx = 0; idx < domList.size(); ++idx) hasTransform_ |= domList[idx]->hasTransformation();
    for (int idx = 0; idx < axisList.size(); ++idx) hasTransform_ |= axisList[idx]->hasTransformation();
    for (int idx = 0; idx < scalarList.size(); ++idx) hasTransform_ |= scalarList[idx]->hasTransformation();

    return hasTransform_;
  }

  /*!
  \brief Get the list of domain pointers
  \return list of domain pointers
  */
  std::vector<CDomain*> CGrid::getDomains()
  {
    std::vector<CDomain*> domList;
    if (!domList_.empty())
    {
      for (int i = 0; i < domList_.size(); ++i) domList.push_back(CDomain::get(domList_[i]));
    }
    return domList;
  }

  /*!
  \brief Get the list of  axis pointers
  \return list of axis pointers
  */
  std::vector<CAxis*> CGrid::getAxis()
  {
    std::vector<CAxis*> aList;
    if (!axisList_.empty())
      for (int i =0; i < axisList_.size(); ++i) aList.push_back(CAxis::get(axisList_[i]));

    return aList;
  }

  /*!
  \brief Get the list of  axis pointers
  \return list of axis pointers
  */
  std::vector<CScalar*> CGrid::getScalars()
  {
    std::vector<CScalar*> sList;
    if (!scalarList_.empty())
      for (int i =0; i < scalarList_.size(); ++i) sList.push_back(CScalar::get(scalarList_[i]));

    return sList;
  }

  /*!
  \brief Get domain pointer with index
  \return domain pointer
  */
  CDomain* CGrid::getDomain(int domainIndex)
  {
    std::vector<CDomain*> domainListP = this->getDomains();
    if (domainListP.empty())
    {
      ERROR("CGrid::getDomain(int domainIndex)",
            << "No domain associated to this grid. " << std::endl
            << "Grid id = " << this->getId());
    }

    if (domainIndex >= domainListP.size() || (domainIndex < 0))
      ERROR("CGrid::getDomain(int domainIndex)",
            << "Domain with the index doesn't exist " << std::endl
            << "Grid id = " << this->getId() << std::endl
            << "Grid has only " << domainListP.size() << " domain but domain index required is " << domainIndex << std::endl);

    return domainListP[domainIndex];
  }

  /*!
  \brief Get the axis pointer with index
  \return axis pointer
  */
  CAxis* CGrid::getAxis(int axisIndex)
  {
    std::vector<CAxis*> axisListP = this->getAxis();
    if (axisListP.empty())
    {
      ERROR("CGrid::getDomain(int axisIndex)",
            << "No axis associated to this grid. " << std::endl
            << "Grid id = " << this->getId());
    }

    if (axisIndex >= axisListP.size() || (axisIndex < 0))
      ERROR("CGrid::getDomain(int axisIndex)",
            << "Domain with the index doesn't exist " << std::endl
            << "Grid id = " << this->getId() << std::endl
            << "Grid has only " << axisListP.size() << " axis but axis index required is " << axisIndex << std::endl);

    return axisListP[axisIndex];
  }

  /*!
  \brief Get the a scalar pointer
  \return scalar pointer
  */
  CScalar* CGrid::getScalar(int scalarIndex)
  {
    std::vector<CScalar*> scalarListP = this->getScalars();
    if (scalarListP.empty())
    {
      ERROR("CGrid::getScalar(int scalarIndex)",
            << "No scalar associated to this grid. " << std::endl
            << "Grid id = " << this->getId());
    }

    if (scalarIndex >= scalarListP.size() || (scalarIndex < 0))
      ERROR("CGrid::getScalar(int scalarIndex)",
            << "Scalar with the index doesn't exist " << std::endl
            << "Grid id = " << this->getId() << std::endl
            << "Grid has only " << scalarListP.size() << " scalar but scalar index required is " << scalarIndex << std::endl);

    return scalarListP[scalarIndex];
  }

  /*!
  \brief Set domain(s) of a grid from a list
  \param[in] domains list of domains
  */
  void CGrid::setDomainList(const std::vector<CDomain*> domains)
  {
    if (isDomListSet) return;
    std::vector<CDomain*> domList = this->getVirtualDomainGroup()->getAllChildren();
    if (!domains.empty() && domList.empty())
    {
      for (int i = 0; i < domains.size(); ++i)
        this->getVirtualDomainGroup()->addChild(domains[i]);
      domList = this->getVirtualDomainGroup()->getAllChildren();
    }

    if (!domList.empty())
    {
      int sizeDom = domList.size();
      domList_.resize(sizeDom);
      for (int i = 0; i < sizeDom; ++i)
      {
        domList_[i] = domList[i]->getId();
      }
      isDomListSet = true;
    }

  }

  /*!
  \brief Set axis(s) of a grid from a list
  \param[in] axis list of axis
  */
  void CGrid::setAxisList(const std::vector<CAxis*> axis)
  {
    if (isAxisListSet) return;
    std::vector<CAxis*> aList = this->getVirtualAxisGroup()->getAllChildren();
    if (!axis.empty() && aList.empty())
    {
      for (int i = 0; i < axis.size(); ++i)
        this->getVirtualAxisGroup()->addChild(axis[i]);
      aList = this->getVirtualAxisGroup()->getAllChildren();
    }

    if (!aList.empty())
    {
      int sizeAxis = aList.size();
      axisList_.resize(sizeAxis);
      for (int i = 0; i < sizeAxis; ++i)
      {
        axisList_[i] = aList[i]->getId();
      }
      isAxisListSet = true;
    }
  }

  /*!
  \brief Set scalar(s) of a grid from a list
  \param[in] scalars list of scalars
  */
  void CGrid::setScalarList(const std::vector<CScalar*> scalars)
  {
    if (isScalarListSet) return;
    std::vector<CScalar*> sList = this->getVirtualScalarGroup()->getAllChildren();
    if (!scalars.empty() && sList.empty())
    {
      for (int i = 0; i < scalars.size(); ++i)
        this->getVirtualScalarGroup()->addChild(scalars[i]);
      sList = this->getVirtualScalarGroup()->getAllChildren();
    }

    if (!sList.empty())
    {
      int sizeScalar = sList.size();
      scalarList_.resize(sizeScalar);
      for (int i = 0; i < sizeScalar; ++i)
      {
        scalarList_[i] = sList[i]->getId();
      }
      isScalarListSet = true;
    }
  }

  /*!
  \brief Get list of id of domains
  \return id list of domains
  */
  std::vector<StdString> CGrid::getDomainList()
  {
    setDomainList();
    return domList_;
  }

  /*!
  \brief Get list of id of axis
  \return id list of axis
  */
  std::vector<StdString> CGrid::getAxisList()
  {
    setAxisList();
    return axisList_;
  }

  /*!
  \brief Get list of id of scalar
  \return id list of scalar
  */
  std::vector<StdString> CGrid::getScalarList()
  {
    setScalarList();
    return scalarList_;
  }

  /*!
    Send all attributes of domains from client to server
  */
  void CGrid::sendAllDomains()
  {
    std::vector<CDomain*> domList = this->getVirtualDomainGroup()->getAllChildren();
    int dSize = domList.size();
    for (int i = 0; i < dSize; ++i)
    {
      sendAddDomain(domList[i]->getId());
      domList[i]->sendAllAttributesToServer();
    }
  }

  /*!
    Send all attributes of axis from client to server
  */
  void CGrid::sendAllAxis()
  {
    std::vector<CAxis*> aList = this->getVirtualAxisGroup()->getAllChildren();
    int aSize = aList.size();

    for (int i = 0; i < aSize; ++i)
    {
      sendAddAxis(aList[i]->getId());
      aList[i]->sendAllAttributesToServer();
    }
  }

  /*!
    Send all attributes of scalars from client to server
  */
  void CGrid::sendAllScalars()
  {
    std::vector<CScalar*> sList = this->getVirtualScalarGroup()->getAllChildren();
    int sSize = sList.size();

    for (int i = 0; i < sSize; ++i)
    {
      sendAddScalar(sList[i]->getId());
      sList[i]->sendAllAttributesToServer();
    }
  }

  void CGrid::setContextClient(CContextClient* contextClient)
  {
    if (clientsSet.find(contextClient)==clientsSet.end())
    {
      clients.push_back(contextClient) ;
      clientsSet.insert(contextClient);
    }
    for (int i=0; i<this->getDomains().size(); i++)
        this->getDomains()[i]->setContextClient(contextClient);
    for (int i=0; i<this->getAxis().size(); i++)
        this->getAxis()[i]->setContextClient(contextClient);
  }

  /*!
    Parse a grid, for now, it contains only domain, axis and scalar
  */
  void CGrid::parse(xml::CXMLNode& node)
  {
    SuperClass::parse(node);

    if (node.goToChildElement())
    {
      StdString domainName("domain");
      StdString axisName("axis");
      StdString scalarName("scalar");
      do
      {
        if (node.getElementName() == domainName) {
          order_.push_back(2);
          this->getVirtualDomainGroup()->parseChild(node);
        }
        if (node.getElementName() == axisName) {
          order_.push_back(1);
          this->getVirtualAxisGroup()->parseChild(node);
        }
        if (node.getElementName() == scalarName) {
          order_.push_back(0);
          this->getVirtualScalarGroup()->parseChild(node);
        }
      } while (node.goToNextElement());
      node.goToParentElement();
    }

    if (!order_.empty())
    {
      int sizeOrd = order_.size();
      axis_domain_order.resize(sizeOrd);
      for (int i = 0; i < sizeOrd; ++i)
      {
        axis_domain_order(i) = order_[i];
      }
    }

    setDomainList();
    setAxisList();
    setScalarList();
   }
} // namespace xios