source: XIOS/dev/dev_olga/src/node/axis.cpp @ 1025

#include "axis.hpp"

#include "attribute_template.hpp"
#include "object_template.hpp"
#include "group_template.hpp"
#include "message.hpp"
#include "type.hpp"
#include "context.hpp"
#include "context_client.hpp"
#include "context_server.hpp"
#include "xios_spl.hpp"
#include "inverse_axis.hpp"
#include "zoom_axis.hpp"
#include "interpolate_axis.hpp"
#include "server_distribution_description.hpp"
#include "client_server_mapping_distributed.hpp"
#include "distribution_client.hpp"

namespace xios {

   /// ////////////////////// Définitions ////////////////////// ///

   CAxis::CAxis(void)
      : CObjectTemplate<CAxis>()
      , CAxisAttributes(), isChecked(false), relFiles(), areClientAttributesChecked_(false)
      , isClientAfterTransformationChecked(false)
      , isDistributed_(false), hasBounds_(false), isCompressible_(false)
      , numberWrittenIndexes_(0), totalNumberWrittenIndexes_(0), offsetWrittenIndexes_(0)
      , transformationMap_(), hasValue(false)
   {
   }

   CAxis::CAxis(const StdString & id)
      : CObjectTemplate<CAxis>(id)
      , CAxisAttributes(), isChecked(false), relFiles(), areClientAttributesChecked_(false)
      , isClientAfterTransformationChecked(false)
      , isDistributed_(false), hasBounds_(false), isCompressible_(false)
      , numberWrittenIndexes_(0), totalNumberWrittenIndexes_(0), offsetWrittenIndexes_(0)
      , transformationMap_(), hasValue(false)
   {
   }

   CAxis::~CAxis(void)
   { /* Ne rien faire de plus */ }

   std::map<StdString, ETranformationType> CAxis::transformationMapList_ = std::map<StdString, ETranformationType>();
   bool CAxis::dummyTransformationMapList_ = CAxis::initializeTransformationMap(CAxis::transformationMapList_);
   bool CAxis::initializeTransformationMap(std::map<StdString, ETranformationType>& m)
   {
     m["zoom_axis"] = TRANS_ZOOM_AXIS;
     m["interpolate_axis"] = TRANS_INTERPOLATE_AXIS;
     m["inverse_axis"] = TRANS_INVERSE_AXIS;
     m["reduce_domain"] = TRANS_REDUCE_DOMAIN_TO_AXIS;
     m["extract_domain"] = TRANS_EXTRACT_DOMAIN_TO_AXIS;
   }

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

   const std::set<StdString> & CAxis::getRelFiles(void) const
   {
      return (this->relFiles);
   }

   bool CAxis::IsWritten(const StdString & filename) const
   {
      return (this->relFiles.find(filename) != this->relFiles.end());
   }

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

   bool CAxis::isDistributed(void) const
   {
      return isDistributed_;
   }

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

   void CAxis::addRelFile(const StdString & filename)
   {
      this->relFiles.insert(filename);
   }

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

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

   const std::vector<int>& CAxis::getIndexesToWrite(void) const
   {
     return indexesToWrite;
   }

   /*!
     Returns the number of indexes written by each server.
     \return the number of indexes written by each server
   */
   int CAxis::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 CAxis::getTotalNumberWrittenIndexes() const
   {
     return totalNumberWrittenIndexes_;
   }

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

   /*!
     Returns the start of indexes written by each server.
     \return the start of indexes written by each server
   */
   int CAxis::getStartWriteIndex() const
   {
     return start_write_index_;
   }

   /*!
     Returns the count of indexes written by each server.
     \return the count of indexes written by each server
   */
   int CAxis::getCountWriteIndex() const
   {
     return count_write_index_;
   }

   /*!
     Returns the local data written by each server.     
   */
   int CAxis::getLocalWriteSize() const
   {
     return local_write_size_;
   }

   /*!
     Returns the global data written by all server.     
   */
   int CAxis::getGlobalWriteSize() const
   {
     return global_write_size_;
   }

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

   /*!
    * 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.
    */
   std::map<int, StdSize> CAxis::getAttributesBufferSize()
   {
     CContextClient* client = CContext::getCurrent()->client;

     std::map<int, StdSize> attributesSizes = getMinimumBufferSizeForAttributes();

     bool isNonDistributed = (n == n_glo);

     if (client->isServerLeader())
     {
       // size estimation for sendServerAttribut
       size_t size = 6 * sizeof(size_t);
       // size estimation for sendNonDistributedValue
       if (isNonDistributed)
         size = std::max(size, CArray<double,1>::size(n_glo) + (isCompressible_ ? CArray<int,1>::size(n_glo) : 0));
       size += CEventClient::headerSize + getId().size() + sizeof(size_t);

       const std::list<int>& ranks = client->getRanksServerLeader();
       for (std::list<int>::const_iterator itRank = ranks.begin(), itRankEnd = ranks.end(); itRank != itRankEnd; ++itRank)
       {
         if (size > attributesSizes[*itRank])
           attributesSizes[*itRank] = size;
       }
     }

     if (!isNonDistributed)
     {
       // size estimation for sendDistributedValue
       boost::unordered_map<int, vector<size_t> >::const_iterator it, ite = indSrv_.end();
       for (it = indSrv_.begin(); it != ite; ++it)
       {
         size_t sizeIndexEvent = CArray<int,1>::size(it->second.size());
         if (isCompressible_)
           sizeIndexEvent += CArray<int,1>::size(indWrittenSrv_[it->first].size());

         size_t sizeValEvent = CArray<double,1>::size(it->second.size());
         if (hasBounds_)
           sizeValEvent += CArray<double,2>::size(2 * it->second.size());

         size_t size = CEventClient::headerSize + getId().size() + sizeof(size_t) + std::max(sizeIndexEvent, sizeValEvent);
         if (size > attributesSizes[it->first])
           attributesSizes[it->first] = size;
       }
     }

     return attributesSizes;
   }

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

   StdString CAxis::GetName(void)   { return (StdString("axis")); }
   StdString CAxis::GetDefName(void){ return (CAxis::GetName()); }
   ENodeType CAxis::GetType(void)   { return (eAxis); }

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

   CAxis* CAxis::createAxis()
   {
     CAxis* axis = CAxisGroup::get("axis_definition")->createChild();
     return axis;
   }

   void CAxis::fillInValues(const CArray<double,1>& values)
   {
     this->value = values;
   }

   void CAxis::checkAttributes(void)
   {
      if (this->n_glo.isEmpty())
        ERROR("CAxis::checkAttributes(void)",
              << "[ id = '" << getId() << "' , context = '" << CObjectFactory::GetCurrentContextId() << "' ] "
              << "The axis is wrongly defined, attribute 'n_glo' must be specified");
      StdSize size = this->n_glo.getValue();

      if (!this->index.isEmpty())
      {
        if (n.isEmpty()) n = index.numElements();

        // It's not so correct but if begin is not the first value of index 
        // then data on the local axis has user-defined distribution. In this case, begin has no meaning.
        if (begin.isEmpty()) begin = index(0);         
      }
      else 
      {
        if (!this->begin.isEmpty())
        {
          if (begin < 0 || begin > size - 1)
            ERROR("CAxis::checkAttributes(void)",
                  << "[ id = '" << getId() << "' , context = '" << CObjectFactory::GetCurrentContextId() << "' ] "
                  << "The axis is wrongly defined, attribute 'begin' (" << begin.getValue() << ") must be non-negative and smaller than size-1 (" << size - 1 << ").");
        }
        else this->begin.setValue(0);

        if (!this->n.isEmpty())
        {
          if (n < 0 || n > size)
            ERROR("CAxis::checkAttributes(void)",
                  << "[ id = '" << getId() << "' , context = '" << CObjectFactory::GetCurrentContextId() << "' ] "
                  << "The axis is wrongly defined, attribute 'n' (" << n.getValue() << ") must be non-negative and smaller than size (" << size << ").");
        }
        else this->n.setValue(size);

        {
          index.resize(n);
          for (int i = 0; i < n; ++i) index(i) = i+begin;
        }
      }

      if (!this->value.isEmpty())
      {
        StdSize true_size = value.numElements();
        if (this->n.getValue() != true_size)
          ERROR("CAxis::checkAttributes(void)",
                << "[ id = '" << getId() << "' , context = '" << CObjectFactory::GetCurrentContextId() << "' ] "
                << "The axis is wrongly defined, attribute 'value' has a different size (" << true_size << ") than the one defined by the \'size\' attribute (" << n.getValue() << ").");
        this->hasValue = true;
      }

      this->checkData();
      this->checkZoom();
      this->checkMask();
      this->checkBounds();

      isDistributed_ = (!this->begin.isEmpty() && !this->n.isEmpty() && (this->begin + this->n < this->n_glo)) ||
                       (!this->n.isEmpty() && (this->n != this->n_glo));
   }

   void CAxis::checkData()
   {
      if (data_begin.isEmpty()) data_begin.setValue(0);

      if (data_n.isEmpty())
      {
        data_n.setValue(n);
      }
      else if (data_n.getValue() < 0)
      {
        ERROR("CAxis::checkData(void)",
              << "[ id = " << this->getId() << " , context = '" << CObjectFactory::GetCurrentContextId() << " ] "
              << "The data size should be strictly positive ('data_n' = " << data_n.getValue() << ").");
      }

      if (data_index.isEmpty())
      {
        data_index.resize(data_n);
        for (int i = 0; i < data_n; ++i) data_index(i) = i;
      }
   }

   void CAxis::checkZoom(void)
   {
     if (global_zoom_begin.isEmpty()) global_zoom_begin.setValue(0);
     if (global_zoom_n.isEmpty()) global_zoom_n.setValue(n_glo.getValue());
     if (zoom_index.isEmpty())
     {
       zoom_index.setValue(index.getValue());
     }
   }

   void CAxis::checkMask()
   {
      if (!mask.isEmpty())
      {
         if (mask.extent(0) != n)
           ERROR("CAxis::checkMask(void)",
                 << "[ id = " << this->getId() << " , context = '" << CObjectFactory::GetCurrentContextId() << " ] "
                 << "The mask does not have the same size as the local domain." << std::endl
                 << "Local size is " << n.getValue() << "." << std::endl
                 << "Mask size is " << mask.extent(0) << ".");
      }
      else // (mask.isEmpty())
      { // If no mask was defined, we create a default one without any masked point.
         mask.resize(n);
         for (int i = 0; i < n; ++i)
         {
           mask(i) = true;
         }
      }
   }

  void CAxis::checkBounds()
  {
    if (!bounds.isEmpty())
    {
      if (bounds.extent(0) != 2 || bounds.extent(1) != n)
        ERROR("CAxis::checkAttributes(void)",
              << "The bounds array of the axis [ id = '" << getId() << "' , context = '" << CObjectFactory::GetCurrentContextId() << "' ] must be of dimension 2 x axis size." << std::endl
              << "Axis size is " << n.getValue() << "." << std::endl
              << "Bounds size is "<< bounds.extent(0) << " x " << bounds.extent(1) << ".");
      hasBounds_ = true;
    }
    else hasBounds_ = false;
  }

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

  bool CAxis::dispatchEvent(CEventServer& event)
   {
      if (SuperClass::dispatchEvent(event)) return true;
      else
      {
        switch(event.type)
        {
           // case EVENT_ID_SERVER_ATTRIBUT :
           //   recvServerAttribut(event);
           //   return true;
           //   break;
          //  case EVENT_ID_INDEX:
          //   recvIndex(event);
          //   return true;
          //   break;
          case EVENT_ID_NON_DISTRIBUTED_ATTRIBUTES:
            recvNonDistributedAttributes(event);
            return true;
            break;
          case EVENT_ID_DISTRIBUTED_ATTRIBUTES:
            recvDistributedAttributes(event);
            return true;
            break;
           default :
             ERROR("bool CAxis::dispatchEvent(CEventServer& event)",
                    << "Unknown Event");
           return false;
         }
      }
   }

   void CAxis::checkAttributesOnClient()
   {
     if (this->areClientAttributesChecked_) return;

     this->checkAttributes();

     this->areClientAttributesChecked_ = true;
   }

   void CAxis::checkAttributesOnClientAfterTransformation(const std::vector<int>& globalDim, int orderPositionInGrid,
                                                          CServerDistributionDescription::ServerDistributionType distType)
   {
     CContext* context=CContext::getCurrent() ;

     if (this->isClientAfterTransformationChecked) return;
     if (context->hasClient)
     {
       if (index.numElements() != n_glo.getValue()) computeConnectedServer(globalDim, orderPositionInGrid, distType);
     }

     this->isClientAfterTransformationChecked = true;
   }

   // Send all checked attributes to server
   void CAxis::sendCheckedAttributes(const std::vector<int>& globalDim, int orderPositionInGrid,
                                     CServerDistributionDescription::ServerDistributionType distType)
   {
     if (!this->areClientAttributesChecked_) checkAttributesOnClient();
     if (!this->isClientAfterTransformationChecked) checkAttributesOnClientAfterTransformation(globalDim, orderPositionInGrid, distType);
     CContext* context = CContext::getCurrent();

     if (this->isChecked) return;
     if (context->hasClient) sendAttributes();    

     this->isChecked = true;
   }

  void CAxis::sendAttributes()
  {
     if (index.numElements() == n_glo.getValue())
       sendNonDistributedAttributes();
     else
       sendDistributedAttributes();
  }

  void CAxis::computeConnectedServer(const std::vector<int>& globalDim, int orderPositionInGrid,
                                     CServerDistributionDescription::ServerDistributionType distType)
  {
    CContext* context = CContext::getCurrent();
    CContextClient* client = (0 != context->clientPrimServer) ? context->clientPrimServer : context->client;
    int nbServer = client->serverSize;
    int range, clientSize = client->clientSize;
    int rank = client->clientRank;

    // size_t ni = this->n.getValue();
    // size_t ibegin = this->begin.getValue();
    // size_t zoom_end = global_zoom_begin+global_zoom_n-1;
    // size_t nZoomCount = 0;
    size_t nbIndex = index.numElements();
    for (size_t idx = 0; idx < nbIndex; ++idx)
    {
      globalLocalIndexMap_[index(idx)] = idx;
      // size_t globalIndex = index(idx);
      // if (globalIndex >= global_zoom_begin && globalIndex <= zoom_end) ++nZoomCount;
    }

    // CArray<size_t,1> globalIndexAxis(nbIndex);
    // std::vector<size_t> globalAxisZoom(nZoomCount);
    // nZoomCount = 0;
    // for (size_t idx = 0; idx < nbIndex; ++idx)
    // {
    //   size_t globalIndex = index(idx);
    //   globalIndexAxis(idx) = globalIndex;
    //   if (globalIndex >= global_zoom_begin && globalIndex <= zoom_end)
    //   {
    //     globalAxisZoom[nZoomCount] = globalIndex;
    //     ++nZoomCount;
    //   }
    // }

    // std::set<int> writtenInd;
    // if (isCompressible_)
    // {
    //   for (int idx = 0; idx < data_index.numElements(); ++idx)
    //   {
    //     int ind = CDistributionClient::getAxisIndex(data_index(idx), data_begin, ni);

    //     if (ind >= 0 && ind < ni && mask(ind))
    //     {
    //       ind += ibegin;
    //       if (ind >= global_zoom_begin && ind <= zoom_end)
    //         writtenInd.insert(ind);
    //     }
    //   }
    // }

    CServerDistributionDescription serverDescriptionGlobal(globalDim, nbServer, distType);
    int distributedDimensionOnServer = serverDescriptionGlobal.getDimensionDistributed();
    CClientServerMapping::GlobalIndexMap globalIndexAxisOnServer;
    if (distributedDimensionOnServer == orderPositionInGrid) // So we have distributed axis on client side and also on server side*
    {
      std::vector<int> nGlobAxis(1);
      nGlobAxis[0] = n_glo.getValue();

      size_t globalSizeIndex = 1, indexBegin, indexEnd;
      for (int i = 0; i < nGlobAxis.size(); ++i) globalSizeIndex *= nGlobAxis[i];
      indexBegin = 0;
      if (globalSizeIndex <= clientSize)
      {
        indexBegin = rank%globalSizeIndex;
        indexEnd = indexBegin;
      }
      else
      {
        for (int i = 0; i < clientSize; ++i)
        {
          range = globalSizeIndex / clientSize;
          if (i < (globalSizeIndex%clientSize)) ++range;
          if (i == client->clientRank) break;
          indexBegin += range;
        }
        indexEnd = indexBegin + range - 1;
      }

      CArray<size_t,1> globalIndex(index.numElements());
      for (size_t idx = 0; idx < globalIndex.numElements(); ++idx)
        globalIndex(idx) = index(idx);

      CServerDistributionDescription serverDescription(nGlobAxis, nbServer);
      serverDescription.computeServerGlobalIndexInRange(std::make_pair<size_t,size_t>(indexBegin, indexEnd));
      CClientServerMapping* clientServerMap = new CClientServerMappingDistributed(serverDescription.getGlobalIndexRange(), client->intraComm);
      clientServerMap->computeServerIndexMapping(globalIndex);
      globalIndexAxisOnServer = clientServerMap->getGlobalIndexOnServer();
      delete clientServerMap;
    }
    else
    {
      std::vector<size_t> globalIndexServer(n_glo.getValue());
      for (size_t idx = 0; idx < n_glo.getValue(); ++idx)
      {
        globalIndexServer[idx] = idx;
      }

      for (int idx = 0; idx < nbServer; ++idx)
      {
        globalIndexAxisOnServer[idx] = globalIndexServer;
      }
    }

    indSrv_.swap(globalIndexAxisOnServer);

    // CClientServerMapping::GlobalIndexMap::const_iterator it = globalIndexAxisOnServer.begin(),
    //                                                      ite = globalIndexAxisOnServer.end();
    CClientServerMapping::GlobalIndexMap::const_iterator it = indSrv_.begin(),
                                                         ite = indSrv_.end();
    // std::vector<size_t>::const_iterator itbVec = (globalAxisZoom).begin(),
    //                                     iteVec = (globalAxisZoom).end();
    // indSrv_.clear();
    // indWrittenSrv_.clear();
    // for (; it != ite; ++it)
    // {
    //   int rank = it->first;
    //   const std::vector<size_t>& globalIndexTmp = it->second;
    //   int nb = globalIndexTmp.size();

    //   for (int i = 0; i < nb; ++i)
    //   {
    //     if (std::binary_search(itbVec, iteVec, globalIndexTmp[i]))
    //     {
    //       indSrv_[rank].push_back(globalIndexTmp[i]);
    //     }

    //     if (writtenInd.count(globalIndexTmp[i]))
    //     {
    //       indWrittenSrv_[rank].push_back(globalIndexTmp[i]);
    //     }
    //   }
    // }

    connectedServerRank_.clear();
    for (it = indSrv_.begin(); it != ite; ++it) {
      connectedServerRank_.push_back(it->first);
    }

    // if (!indSrv_.empty())
    // {
    //   std::map<int, vector<size_t> >::const_iterator itIndSrv  = indSrv_.begin(),
    //                                                  iteIndSrv = indSrv_.end();
    //   connectedServerRank_.clear();
    //   for (; itIndSrv != iteIndSrv; ++itIndSrv)
    //     connectedServerRank_.push_back(itIndSrv->first);
    // }
    nbConnectedClients_ = CClientServerMapping::computeConnectedClients(client->serverSize, client->clientSize, client->intraComm, connectedServerRank_);
  }


  // void CAxis::computeConnectedServer(const std::vector<int>& globalDim, int orderPositionInGrid,
  //                                    CServerDistributionDescription::ServerDistributionType distType)
  // {
  //   CContext* context = CContext::getCurrent();
  //   CContextClient* client = (0 != context->clientPrimServer) ? context->clientPrimServer : context->client;
  //   int nbServer = client->serverSize;
  //   int range, clientSize = client->clientSize;
  //   int rank = client->clientRank;

  //   size_t ni = this->n.getValue();
  //   size_t ibegin = this->begin.getValue();
  //   size_t zoom_end = global_zoom_begin+global_zoom_n-1;
  //   size_t nZoomCount = 0;
  //   size_t nbIndex = index.numElements();
  //   for (size_t idx = 0; idx < nbIndex; ++idx)
  //   {
  //     size_t globalIndex = index(idx);
  //     if (globalIndex >= global_zoom_begin && globalIndex <= zoom_end) ++nZoomCount;
  //   }

  //   CArray<size_t,1> globalIndexAxis(nbIndex);
  //   std::vector<size_t> globalAxisZoom(nZoomCount);
  //   nZoomCount = 0;
  //   for (size_t idx = 0; idx < nbIndex; ++idx)
  //   {
  //     size_t globalIndex = index(idx);
  //     globalIndexAxis(idx) = globalIndex;
  //     if (globalIndex >= global_zoom_begin && globalIndex <= zoom_end)
  //     {
  //       globalAxisZoom[nZoomCount] = globalIndex;
  //       ++nZoomCount;
  //     }
  //   }

  //   std::set<int> writtenInd;
  //   if (isCompressible_)
  //   {
  //     for (int idx = 0; idx < data_index.numElements(); ++idx)
  //     {
  //       int ind = CDistributionClient::getAxisIndex(data_index(idx), data_begin, ni);

  //       if (ind >= 0 && ind < ni && mask(ind))
  //       {
  //         ind += ibegin;
  //         if (ind >= global_zoom_begin && ind <= zoom_end)
  //           writtenInd.insert(ind);
  //       }
  //     }
  //   }

  //   CServerDistributionDescription serverDescriptionGlobal(globalDim, nbServer);
  //   int distributedDimensionOnServer = serverDescriptionGlobal.getDimensionDistributed();
  //   CClientServerMapping::GlobalIndexMap globalIndexAxisOnServer;
  //   if (distributedDimensionOnServer == orderPositionInGrid) // So we have distributed axis on client side and also on server side*
  //   {
  //     std::vector<int> nGlobAxis(1);
  //     nGlobAxis[0] = n_glo.getValue();

  //     size_t globalSizeIndex = 1, indexBegin, indexEnd;
  //     for (int i = 0; i < nGlobAxis.size(); ++i) globalSizeIndex *= nGlobAxis[i];
  //     indexBegin = 0;
  //     if (globalSizeIndex <= clientSize)
  //     {
  //       indexBegin = rank%globalSizeIndex;
  //       indexEnd = indexBegin;
  //     }
  //     else
  //     {
  //       for (int i = 0; i < clientSize; ++i)
  //       {
  //         range = globalSizeIndex / clientSize;
  //         if (i < (globalSizeIndex%clientSize)) ++range;
  //         if (i == client->clientRank) break;
  //         indexBegin += range;
  //       }
  //       indexEnd = indexBegin + range - 1;
  //     }

  //     CServerDistributionDescription serverDescription(nGlobAxis, nbServer);
  //     serverDescription.computeServerGlobalIndexInRange(std::make_pair<size_t,size_t>(indexBegin, indexEnd));
  //     CClientServerMapping* clientServerMap = new CClientServerMappingDistributed(serverDescription.getGlobalIndexRange(), client->intraComm);
  //     clientServerMap->computeServerIndexMapping(globalIndexAxis);
  //     globalIndexAxisOnServer = clientServerMap->getGlobalIndexOnServer();
  //     delete clientServerMap;
  //   }
  //   else
  //   {
  //     std::vector<size_t> globalIndexServer(n_glo.getValue());
  //     for (size_t idx = 0; idx < n_glo.getValue(); ++idx)
  //     {
  //       globalIndexServer[idx] = idx;
  //     }

  //     for (int idx = 0; idx < nbServer; ++idx)
  //     {
  //       globalIndexAxisOnServer[idx] = globalIndexServer;
  //     }
  //   }

  //   CClientServerMapping::GlobalIndexMap::const_iterator it = globalIndexAxisOnServer.begin(),
  //                                                        ite = globalIndexAxisOnServer.end();
  //   std::vector<size_t>::const_iterator itbVec = (globalAxisZoom).begin(),
  //                                       iteVec = (globalAxisZoom).end();
  //   indSrv_.clear();
  //   indWrittenSrv_.clear();
  //   for (; it != ite; ++it)
  //   {
  //     int rank = it->first;
  //     const std::vector<size_t>& globalIndexTmp = it->second;
  //     int nb = globalIndexTmp.size();

  //     for (int i = 0; i < nb; ++i)
  //     {
  //       if (std::binary_search(itbVec, iteVec, globalIndexTmp[i]))
  //       {
  //         indSrv_[rank].push_back(globalIndexTmp[i]);
  //       }

  //       if (writtenInd.count(globalIndexTmp[i]))
  //       {
  //         indWrittenSrv_[rank].push_back(globalIndexTmp[i]);
  //       }
  //     }
  //   }

  //   connectedServerRank_.clear();
  //   for (it = globalIndexAxisOnServer.begin(); it != ite; ++it) {
  //     connectedServerRank_.push_back(it->first);
  //   }

  //   if (!indSrv_.empty())
  //   {
  //     std::map<int, vector<size_t> >::const_iterator itIndSrv  = indSrv_.begin(),
  //                                                    iteIndSrv = indSrv_.end();
  //     connectedServerRank_.clear();
  //     for (; itIndSrv != iteIndSrv; ++itIndSrv)
  //       connectedServerRank_.push_back(itIndSrv->first);
  //   }
  //   nbConnectedClients_ = CClientServerMapping::computeConnectedClients(client->serverSize, client->clientSize, client->intraComm, connectedServerRank_);
  // }

  void CAxis::sendNonDistributedAttributes()
  {
    CContext* context = CContext::getCurrent();
    CContextClient* client = (0 != context->clientPrimServer) ? context->clientPrimServer : context->client;
    
    CEventClient event(getType(), EVENT_ID_NON_DISTRIBUTED_ATTRIBUTES);
    size_t nbIndex = index.numElements();
    size_t nbDataIndex = 0;

    for (int idx = 0; idx < data_index.numElements(); ++idx)
    {      
      int ind = data_index(idx);
      if (ind >= 0 && ind < nbIndex) ++nbDataIndex;
    }

    CArray<int,1> dataIndex(nbDataIndex);
    nbDataIndex = 0;
    for (int idx = 0; idx < data_index.numElements(); ++idx)
    {      
      int ind = data_index(idx);
      if (ind >= 0 && ind < nbIndex)
      {
        dataIndex(nbDataIndex) = ind;
        ++nbDataIndex;
      } 
    }

    if (client->isServerLeader())
    { 
      std::list<CMessage> msgs;

      const std::list<int>& ranks = client->getRanksServerLeader();
      for (std::list<int>::const_iterator itRank = ranks.begin(), itRankEnd = ranks.end(); itRank != itRankEnd; ++itRank)
      {
        msgs.push_back(CMessage());
        CMessage& msg = msgs.back();
        msg << this->getId();
        msg << index.getValue() << dataIndex << zoom_index.getValue() << mask.getValue();
        msg << hasValue;
        if (hasValue) msg << value.getValue();

        msg << hasBounds_;
        if (hasBounds_) msg << bounds.getValue();
        
        event.push(*itRank, 1, msg);
      }
      client->sendEvent(event);
    }
    else client->sendEvent(event);
  }

  void CAxis::recvNonDistributedAttributes(CEventServer& event)
  {
    list<CEventServer::SSubEvent>::iterator it;
    for (it = event.subEvents.begin(); it != event.subEvents.end(); ++it)
    {
      CBufferIn* buffer = it->buffer;
      string axisId;
      *buffer >> axisId;
      get(axisId)->recvNonDistributedAttributes(it->rank, *buffer);
    }
  }

  void CAxis::recvNonDistributedAttributes(int rank, CBufferIn& buffer)
  { 
    CArray<int,1> tmp_index, tmp_data_index, tmp_zoom_index;
    CArray<bool,1> tmp_mask;
    CArray<double,1> tmp_val;
    CArray<double,2> tmp_bnds;

    buffer >> tmp_index;
    index.reference(tmp_index);
    buffer >> tmp_data_index;
    data_index.reference(tmp_data_index);
    buffer >> tmp_zoom_index;
    zoom_index.reference(tmp_zoom_index);
    buffer >> tmp_mask;
    mask.reference(tmp_mask);
    buffer >> hasValue;
    if (hasValue)
    {
      buffer >> tmp_val;
      value.reference(tmp_val);
    }

    buffer >> hasBounds_;
    if (hasBounds_)
    {
      buffer >> tmp_bnds;
      bounds.reference(tmp_bnds);
    }

    {      
      count_write_index_ = zoom_index.numElements();            
      start_write_index_ = 0;
      local_write_size_ = count_write_index_;
      global_write_size_ = count_write_index_;
    }
  }

  void CAxis::sendDistributedAttributes(void)
  {
    int ns, n, i, j, ind, nv, idx;
    CContext* context = CContext::getCurrent();
    CContextClient* client = (0 != context->clientPrimServer) ? context->clientPrimServer : context->client;

    CEventClient eventData(getType(), EVENT_ID_DISTRIBUTED_ATTRIBUTES);
    
    list<CMessage> listData;
    list<CArray<int,1> > list_indi, list_dataInd, list_zoomInd;    
    list<CArray<bool,1> > list_mask;
    list<CArray<double,1> > list_val;
    list<CArray<double,2> > list_bounds;

    int nbIndex = index.numElements();
    CArray<int,1> dataIndex(nbIndex);
    dataIndex = -1;
    for (int idx = 0; idx < data_index.numElements(); ++idx)
    {
      if (0 <= data_index(idx) && data_index(idx) < nbIndex)
        dataIndex(idx) = data_index(idx);
    }

    boost::unordered_map<int, std::vector<size_t> >::const_iterator it, iteMap;
    iteMap = indSrv_.end();
    for (int k = 0; k < connectedServerRank_.size(); ++k)
    {
      int nbData = 0;
      int rank = connectedServerRank_[k];
      int nbSendingClient = nbConnectedClients_[rank];
      it = indSrv_.find(rank);
      if (iteMap != it)
        nbData = it->second.size();

      list_indi.push_back(CArray<int,1>(nbData));
      list_dataInd.push_back(CArray<int,1>(nbData));
      list_zoomInd.push_back(CArray<int,1>(nbData));
      list_mask.push_back(CArray<bool,1>(nbData));


      if (hasValue)
        list_val.push_back(CArray<double,1>(nbData));

      if (hasBounds_)
      {
        list_bounds.push_back(CArray<double,2>(2,nbData));
      }

      CArray<int,1>& indi = list_indi.back();
      CArray<int,1>& dataIndi = list_dataInd.back();
      CArray<int,1>& zoomIndi = list_zoomInd.back();
      CArray<bool,1>& maskIndi = list_mask.back();      

      for (n = 0; n < nbData; ++n)
      {
        idx = static_cast<int>(it->second[n]);
        indi(n) = idx;

        ind = globalLocalIndexMap_[idx];
        dataIndi(n) = dataIndex(ind);
        maskIndi(n) = mask(ind);
        zoomIndi(n) = zoom_index(ind);        

        if (hasValue)
        {
          CArray<double,1>& val = list_val.back();
          val(n) = value(ind);
        }

        if (hasBounds_)
        {
          CArray<double,2>& boundsVal = list_bounds.back();
          boundsVal(0, n) = bounds(0,n);
          boundsVal(1, n) = bounds(1,n);
        }
      }

      listData.push_back(CMessage());
      listData.back() << this->getId()  
                      << list_indi.back() << list_dataInd.back() << list_zoomInd.back() << list_mask.back()
                      << hasValue;
      if (hasValue)
        listData.back() << list_val.back();
      listData.back() << hasBounds_;
      if (hasBounds_)
        listData.back() << list_bounds.back();

      eventData.push(rank, nbConnectedClients_[rank], listData.back());
    }

    client->sendEvent(eventData);
  }

  void CAxis::recvDistributedAttributes(CEventServer& event)
  {
    string axisId;
    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 >> axisId;
      buffers.push_back(buffer);
    }
    get(axisId)->recvDistributedAttributes(ranks, buffers);
  }

  void CAxis::recvDistributedAttributes(vector<int>& ranks, vector<CBufferIn*> buffers)
  {
    int nbReceived = ranks.size();
    vector<CArray<int,1> > vec_indi(nbReceived), vec_dataInd(nbReceived), vec_zoomInd(nbReceived);    
    vector<CArray<bool,1> > vec_mask(nbReceived);
    vector<CArray<double,1> > vec_val(nbReceived);
    vector<CArray<double,2> > vec_bounds(nbReceived);
    
    for (int idx = 0; idx < nbReceived; ++idx)
    {      
      CBufferIn& buffer = *buffers[idx];
      buffer >> vec_indi[idx];
      buffer >> vec_dataInd[idx];
      buffer >> vec_zoomInd[idx];
      buffer >> vec_mask[idx];

      buffer >> hasValue;
      if (hasValue)
        buffer >> vec_val[idx];
      buffer >> hasBounds_;
      if (hasBounds_)
        buffer >> vec_bounds[idx];
    }

    int nbData = 0;
    for (int idx = 0; idx < nbReceived; ++idx)
    {
      nbData += vec_indi[idx].numElements();
    }
    
    index.resize(nbData);
    CArray<int,1> nonCompressedData(nbData);    
    mask.resize(nbData);
    if (hasValue)
      value.resize(nbData);
    if (hasBounds_)
      bounds.resize(2,nbData);

    nbData = 0;
    for (int idx = 0; idx < nbReceived; ++idx)
    {
      CArray<int,1>& indi = vec_indi[idx];
      CArray<int,1>& dataIndi = vec_dataInd[idx];
      CArray<bool,1>& maskIndi = vec_mask[idx];
      int nb = indi.numElements();
      for (int n = 0; n < nb; ++n)
      {
        index(nbData) = indi(n);
        nonCompressedData(nbData) = (0 <= dataIndi(n)) ? nbData : -1;
        mask(nbData) = maskIndi(n);
        if (hasValue)
          value(nbData) = vec_val[idx](n);
        if (hasBounds_)
        {
          bounds(0,nbData) = vec_bounds[idx](0,n);
          bounds(1,nbData) = vec_bounds[idx](1,n);
        }
        ++nbData;
      }
    }

    int nbIndex = index.numElements();
    int nbCompressedData = 0; 
    for (int idx = 0; idx < nonCompressedData.numElements(); ++idx)
    {
      if (0 <= nonCompressedData(idx) && nonCompressedData(idx) < nbIndex)
        ++nbCompressedData;        
    }

    data_index.resize(nbCompressedData);
    nbCompressedData = 0;
    for (int idx = 0; idx < nonCompressedData.numElements(); ++idx)
    {
      if (0 <= nonCompressedData(idx) && nonCompressedData(idx) < nbIndex)
      {
        data_index(nbCompressedData) = nonCompressedData(idx);
        ++nbCompressedData;        
      }
    }

    int nbZoomIndex = 0;
    for (int idx = 0; idx < nbReceived; ++idx)
    {
      nbZoomIndex += vec_zoomInd[idx].numElements();
    }

    zoom_index.resize(nbZoomIndex);
    nbZoomIndex = 0;
    CArray<int,1>& zoom_Index_Tmp = this->zoom_index;
    for (int idx = 0; idx < nbReceived; ++idx)
    {      
      CArray<int,1> tmp = zoom_Index_Tmp(Range(nbZoomIndex, nbZoomIndex + vec_zoomInd[idx].numElements()-1));
      tmp = vec_zoomInd[idx];

      nbZoomIndex += vec_zoomInd[idx].numElements();
    }


    {
      CContextServer* server = CContext::getCurrent()->server;
      count_write_index_ = zoom_index.numElements();      
      MPI_Scan(&count_write_index_, &start_write_index_, 1, MPI_INT, MPI_SUM, server->intraComm);
      global_write_size_ = start_write_index_;
      start_write_index_ -= count_write_index_;
      local_write_size_ = count_write_index_;      
    }
  }

  // void CAxis::sendServerAttribut(const std::vector<int>& globalDim, int orderPositionInGrid,
  //                                CServerDistributionDescription::ServerDistributionType distType)
  // {
  //   CContext* context = CContext::getCurrent();

  //   CContextClient* contextClientTmp = (0 != context->clientPrimServer) ? context->clientPrimServer 
  //                                                                       : context->client;

    
  //   int nbServer = contextClientTmp->serverSize;

  //   CServerDistributionDescription serverDescription(globalDim, nbServer);
  //   serverDescription.computeServerDistribution();

  //   std::vector<std::vector<int> > serverIndexBegin = serverDescription.getServerIndexBegin();
  //   std::vector<std::vector<int> > serverDimensionSizes = serverDescription.getServerDimensionSizes();

  //   globalDimGrid.resize(globalDim.size());
  //   for (int idx = 0; idx < globalDim.size(); ++idx) globalDimGrid(idx) = globalDim[idx];

  //   CEventClient event(getType(),EVENT_ID_SERVER_ATTRIBUT);
  //   if (contextClientTmp->isServerLeader())
  //   {
  //     std::list<CMessage> msgs;

  //     const std::list<int>& ranks = contextClientTmp->getRanksServerLeader();
  //     for (std::list<int>::const_iterator itRank = ranks.begin(), itRankEnd = ranks.end(); itRank != itRankEnd; ++itRank)
  //     {
  //       // Use const int to ensure CMessage holds a copy of the value instead of just a reference
  //       const int begin = serverIndexBegin[*itRank][orderPositionInGrid];
  //       const int ni    = serverDimensionSizes[*itRank][orderPositionInGrid];
  //       const int end   = begin + ni - 1;

  //       msgs.push_back(CMessage());
  //       CMessage& msg = msgs.back();
  //       msg << this->getId();
  //       msg << ni << begin << end;
  //       msg << global_zoom_begin.getValue() << global_zoom_n.getValue();
  //       msg << isCompressible_;
  //       msg << orderPositionInGrid;
  //       msg << globalDimGrid;

  //       event.push(*itRank,1,msg);
  //     }
  //     contextClientTmp->sendEvent(event);
  //   }
  //   else contextClientTmp->sendEvent(event);
  // }

  // void CAxis::recvServerAttribut(CEventServer& event)
  // {
  //   CBufferIn* buffer = event.subEvents.begin()->buffer;
  //   string axisId;
  //   *buffer >> axisId;
  //   get(axisId)->recvServerAttribut(*buffer);
    {
      CContextClient* contextClientTmp = (context->hasServer) ? context->clientPrimServer[i]
    }

  //   CContext* context = CContext::getCurrent();
  //   if (context->hasClient && context->hasServer)
  //   {
  //     std::vector<int> globalDim(get(axisId)->globalDimGrid.numElements());
  //     for (int idx = 0; idx < globalDim.size(); ++idx) globalDim[idx] = get(axisId)->globalDimGrid(idx);
  //     get(axisId)->sendServerAttribut(globalDim, get(axisId)->orderPosInGrid, 
  //                                     CServerDistributionDescription::BAND_DISTRIBUTION);
  //   }
  // }

  // void CAxis::recvServerAttribut(CBufferIn& buffer)
  // {
  //   int ni_srv, begin_srv, end_srv, global_zoom_begin_tmp, global_zoom_n_tmp;

  //   buffer >> ni_srv >> begin_srv >> end_srv;
  //   buffer >> global_zoom_begin_tmp >> global_zoom_n_tmp;
  //   buffer >> isCompressible_;
  //   buffer >> orderPosInGrid;
  //   buffer >> globalDimGrid;

  //   global_zoom_begin = global_zoom_begin_tmp;
  //   global_zoom_n  = global_zoom_n_tmp;
  //   int global_zoom_end = global_zoom_begin + global_zoom_n - 1;

  //   zoom_begin_srv = global_zoom_begin > begin_srv ? global_zoom_begin : begin_srv ;
  //   zoom_end_srv   = global_zoom_end < end_srv ? global_zoom_end : end_srv ;
  //   zoom_size_srv  = zoom_end_srv - zoom_begin_srv + 1;

  //   if (zoom_size_srv<=0)
  //   {
  //     zoom_begin_srv = 0; zoom_end_srv = 0; zoom_size_srv = 0;
  //   }

  //   if (n_glo == n)
  //   {
  //     zoom_begin_srv = global_zoom_begin;
  //     zoom_end_srv   = global_zoom_end; //zoom_end;
  //     zoom_size_srv  = zoom_end_srv - zoom_begin_srv + 1;
  //   }
  //   if (hasValue)
  //   {
  //     value_srv.resize(zoom_size_srv);
  //     if (hasBounds_)  bound_srv.resize(2,zoom_size_srv);
  //   }
  // }

  CTransformation<CAxis>* CAxis::addTransformation(ETranformationType transType, const StdString& id)
  {
    transformationMap_.push_back(std::make_pair(transType, CTransformation<CAxis>::createTransformation(transType,id)));
    return transformationMap_.back().second;
  }

  bool CAxis::hasTransformation()
  {
    return (!transformationMap_.empty());
  }

  void CAxis::setTransformations(const TransMapTypes& axisTrans)
  {
    transformationMap_ = axisTrans;
  }

  CAxis::TransMapTypes CAxis::getAllTransformations(void)
  {
    return transformationMap_;
  }

  void CAxis::duplicateTransformation(CAxis* src)
  {
    if (src->hasTransformation())
    {
      this->setTransformations(src->getAllTransformations());
    }
  }

  /*!
   * Go through the hierarchy to find the axis from which the transformations must be inherited
   */
  void CAxis::solveInheritanceTransformation()
  {
    if (hasTransformation() || !hasDirectAxisReference())
      return;

    CAxis* axis = this;
    std::vector<CAxis*> refAxis;
    while (!axis->hasTransformation() && axis->hasDirectAxisReference())
    {
      refAxis.push_back(axis);
      axis = axis->getDirectAxisReference();
    }

    if (axis->hasTransformation())
      for (size_t i = 0; i < refAxis.size(); ++i)
        refAxis[i]->setTransformations(axis->getAllTransformations());
  }

  void CAxis::parse(xml::CXMLNode & node)
  {
    SuperClass::parse(node);

    if (node.goToChildElement())
    {
      StdString nodeElementName;
      do
      {
        StdString nodeId("");
        if (node.getAttributes().end() != node.getAttributes().find("id"))
        { nodeId = node.getAttributes()["id"]; }

        nodeElementName = node.getElementName();
        std::map<StdString, ETranformationType>::const_iterator ite = transformationMapList_.end(), it;
        it = transformationMapList_.find(nodeElementName);
        if (ite != it)
        {
          transformationMap_.push_back(std::make_pair(it->second, CTransformation<CAxis>::createTransformation(it->second,
                                                                                                               nodeId,
                                                                                                               &node)));
        }
        else
        {
          ERROR("void CAxis::parse(xml::CXMLNode & node)",
                << "The transformation " << nodeElementName << " has not been supported yet.");
        }
      } while (node.goToNextElement()) ;
      node.goToParentElement();
    }
  }

  DEFINE_REF_FUNC(Axis,axis)

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

} // namespace xios