source: XIOS/dev/branch_openmp/src/context_server.cpp @ 1520

Last change on this file since 1520 was 1520, checked in by yushan, 3 years ago

save dev. TO DO : test with xios

  • Property copyright set to
    Software name : XIOS (Xml I/O Server)
    http://forge.ipsl.jussieu.fr/ioserver
    Creation date : January 2009
    Licence : CeCCIL version2
    see license file in root directory : Licence_CeCILL_V2-en.txt
    or http://www.cecill.info/licences/Licence_CeCILL_V2-en.html
    Holder : CEA/LSCE (Laboratoire des Sciences du CLimat et de l'Environnement)
    CNRS/IPSL (Institut Pierre Simon Laplace)
    Project Manager : Yann Meurdesoif
    yann.meurdesoif@cea.fr
  • Property svn:eol-style set to native
File size: 9.1 KB
Line 
1#include "context_server.hpp"
2#include "buffer_in.hpp"
3#include "type.hpp"
4#include "context.hpp"
5#include "object_template.hpp"
6#include "group_template.hpp"
7#include "attribute_template.hpp"
8#include "domain.hpp"
9#include "field.hpp"
10#include "file.hpp"
11#include "grid.hpp"
12#include "mpi.hpp"
13#include "tracer.hpp"
14#include "timer.hpp"
15#include "cxios.hpp"
16#include "event_scheduler.hpp"
17#include "server.hpp"
18#include <boost/functional/hash.hpp>
19
20using namespace ep_lib;
21
22namespace xios
23{
24
25  CContextServer::CContextServer(CContext* parent,MPI_Comm intraComm_,MPI_Comm interComm_)
26  {
27    context=parent;
28    intraComm=intraComm_;
29    MPI_Comm_size(intraComm,&intraCommSize);
30    MPI_Comm_rank(intraComm,&intraCommRank);
31
32    interComm=interComm_;
33    int flag;
34    MPI_Comm_test_inter(interComm,&flag);
35    if (flag) MPI_Comm_remote_size(interComm,&commSize);
36    else  MPI_Comm_size(interComm,&commSize);
37
38    currentTimeLine=0;
39    scheduled=false;
40    finished=false;
41    boost::hash<string> hashString;
42    if (CServer::serverLevel == 1)
43      hashId=hashString(context->getId() + boost::lexical_cast<string>(context->clientPrimServer.size()));
44    else
45      hashId=hashString(context->getId());
46  }
47
48  void CContextServer::setPendingEvent(void)
49  {
50    pendingEvent=true;
51  }
52
53  bool CContextServer::hasPendingEvent(void)
54  {
55    return pendingEvent;
56  }
57
58  bool CContextServer::hasFinished(void)
59  {
60    return finished;
61  }
62
63  bool CContextServer::eventLoop(bool enableEventsProcessing /*= true*/)
64  {
65    listen();
66    checkPendingRequest();
67    if (enableEventsProcessing)
68      processEvents();
69    return finished;
70  }
71
72  void CContextServer::listen(void)
73  {
74    int rank;
75    int flag;
76    int count;
77    char * addr;
78    MPI_Status status;
79    map<int,CServerBuffer*>::iterator it;
80    bool okLoop;
81
82    traceOff();
83    MPI_Iprobe(-2, 20,interComm,&flag,&status);
84    traceOn();
85
86    if (flag==true)
87    {
88      #ifdef _usingMPI
89      rank=status.MPI_SOURCE ;
90      #elif _usingEP
91      rank=status.ep_src ;
92      #endif
93      okLoop = true;
94      if (pendingRequest.find(rank)==pendingRequest.end())
95        okLoop = !listenPendingRequest(status) ;
96      if (okLoop)
97      {
98        for(rank=0;rank<commSize;rank++)
99        {
100          if (pendingRequest.find(rank)==pendingRequest.end())
101          {
102
103            traceOff();
104            MPI_Iprobe(rank, 20,interComm,&flag,&status);
105            traceOn();
106            if (flag==true) listenPendingRequest(status) ;
107          }
108        }
109      }
110    }
111  }
112
113  bool CContextServer::listenPendingRequest(MPI_Status& status)
114  {
115    int count;
116    char * addr;
117    map<int,CServerBuffer*>::iterator it;
118    #ifdef _usingMPI
119    int rank=status.MPI_SOURCE ;
120    #elif _usingEP
121    int rank=status.ep_src;
122    #endif
123
124    it=buffers.find(rank);
125    if (it==buffers.end()) // Receive the buffer size and allocate the buffer
126    {
127       StdSize buffSize = 0;
128       MPI_Request request;
129       MPI_Irecv(&buffSize, 1, MPI_LONG, rank, 20, interComm, &request);
130       MPI_Wait(&request, &status);
131       //MPI_Recv(&buffSize, 1, MPI_LONG, rank, 20, interComm, &status);
132       mapBufferSize_.insert(std::make_pair(rank, buffSize));
133       it=(buffers.insert(pair<int,CServerBuffer*>(rank,new CServerBuffer(buffSize)))).first;
134       return true;
135    }
136    else
137    {
138      MPI_Get_count(&status,MPI_CHAR,&count);
139      if (it->second->isBufferFree(count))
140      {
141         addr=(char*)it->second->getBuffer(count);
142         MPI_Irecv(addr,count,MPI_CHAR,rank,20,interComm,&pendingRequest[rank]);
143         bufferRequest[rank]=addr;
144         return true;
145      }
146      else
147        return false;
148    }
149  }
150
151
152  void CContextServer::checkPendingRequest(void)
153  {
154    map<int,MPI_Request>::iterator it;
155    list<int> recvRequest;
156    list<int>::iterator itRecv;
157    int rank;
158    int flag;
159    int count;
160    MPI_Status status;
161
162    for(it=pendingRequest.begin();it!=pendingRequest.end();it++)
163    {
164      rank=it->first;
165      traceOff();
166      MPI_Test(& it->second, &flag, &status);
167      traceOn();
168      if (flag==true)
169      {
170        recvRequest.push_back(rank);
171        MPI_Get_count(&status,MPI_CHAR,&count);
172        processRequest(rank,bufferRequest[rank],count);
173      }
174    }
175
176    for(itRecv=recvRequest.begin();itRecv!=recvRequest.end();itRecv++)
177    {
178      pendingRequest.erase(*itRecv);
179      bufferRequest.erase(*itRecv);
180    }
181  }
182
183  void CContextServer::processRequest(int rank, char* buff,int count)
184  {
185
186    CBufferIn buffer(buff,count);
187    char* startBuffer,endBuffer;
188    int size, offset;
189    size_t timeLine;
190    map<size_t,CEventServer*>::iterator it;
191
192    CTimer::get("Process request").resume();
193    while(count>0)
194    {
195      char* startBuffer=(char*)buffer.ptr();
196      CBufferIn newBuffer(startBuffer,buffer.remain());
197      newBuffer>>size>>timeLine;
198
199      it=events.find(timeLine);
200      if (it==events.end()) it=events.insert(pair<int,CEventServer*>(timeLine,new CEventServer)).first;
201      it->second->push(rank,buffers[rank],startBuffer,size);
202
203      buffer.advance(size);
204      count=buffer.remain();
205    }
206    CTimer::get("Process request").suspend();
207  }
208
209  void CContextServer::processEvents(void)
210  {
211    map<size_t,CEventServer*>::iterator it;
212    CEventServer* event;
213
214    it=events.find(currentTimeLine);
215    if (it!=events.end())
216    {
217      event=it->second;
218
219      if (event->isFull())
220      {
221        if (!scheduled && CServer::eventScheduler) // Skip event scheduling for attached mode and reception on client side
222        {
223          CServer::eventScheduler->registerEvent(currentTimeLine,hashId);
224          scheduled=true;
225        }
226        else if (!CServer::eventScheduler || CServer::eventScheduler->queryEvent(currentTimeLine,hashId) )
227        {
228         // When using attached mode, synchronise the processes to avoid that differents event be scheduled by differents processes
229         // The best way to properly solve this problem will be to use the event scheduler also in attached mode
230         // for now just set up a MPI barrier
231         if (!CServer::eventScheduler && CXios::isServer) MPI_Barrier(intraComm) ;
232
233         CTimer::get("Process events").resume();
234         dispatchEvent(*event);
235         CTimer::get("Process events").suspend();
236         pendingEvent=false;
237         delete event;
238         events.erase(it);
239         currentTimeLine++;
240         scheduled = false;
241        }
242      }
243    }
244  }
245
246  CContextServer::~CContextServer()
247  {
248    map<int,CServerBuffer*>::iterator it;
249    for(it=buffers.begin();it!=buffers.end();++it) delete it->second;
250  }
251
252  void CContextServer::dispatchEvent(CEventServer& event)
253  {
254    string contextName;
255    string buff;
256    int MsgSize;
257    int rank;
258    list<CEventServer::SSubEvent>::iterator it;
259    StdString ctxId = context->getId();
260    CContext::setCurrent(ctxId);
261    StdSize totalBuf = 0;
262
263    if (event.classId==CContext::GetType() && event.type==CContext::EVENT_ID_CONTEXT_FINALIZE)
264    {
265      finished=true;
266      #pragma omp critical (_output)
267      info(20)<<" CContextServer: Receive context <"<<context->getId()<<"> finalize."<<endl;
268      context->finalize();
269      std::map<int, StdSize>::const_iterator itbMap = mapBufferSize_.begin(),
270                           iteMap = mapBufferSize_.end(), itMap;
271      for (itMap = itbMap; itMap != iteMap; ++itMap)
272      {
273        rank = itMap->first;
274        #pragma omp critical (_output)
275        report(10)<< " Memory report : Context <"<<ctxId<<"> : server side : memory used for buffer of each connection to client" << endl
276            << "  +) With client of rank " << rank << " : " << itMap->second << " bytes " << endl;
277        totalBuf += itMap->second;
278      }
279      #pragma omp critical (_output)
280      report(0)<< " Memory report : Context <"<<ctxId<<"> : server side : total memory used for buffer "<<totalBuf<<" bytes"<<endl;
281    }
282    else if (event.classId==CContext::GetType()) CContext::dispatchEvent(event);
283    else if (event.classId==CContextGroup::GetType()) CContextGroup::dispatchEvent(event);
284    else if (event.classId==CCalendarWrapper::GetType()) CCalendarWrapper::dispatchEvent(event);
285    else if (event.classId==CDomain::GetType()) CDomain::dispatchEvent(event);
286    else if (event.classId==CDomainGroup::GetType()) CDomainGroup::dispatchEvent(event);
287    else if (event.classId==CAxis::GetType()) CAxis::dispatchEvent(event);
288    else if (event.classId==CAxisGroup::GetType()) CAxisGroup::dispatchEvent(event);
289    else if (event.classId==CScalar::GetType()) CScalar::dispatchEvent(event);
290    else if (event.classId==CScalarGroup::GetType()) CScalarGroup::dispatchEvent(event);
291    else if (event.classId==CGrid::GetType()) CGrid::dispatchEvent(event);
292    else if (event.classId==CGridGroup::GetType()) CGridGroup::dispatchEvent(event);
293    else if (event.classId==CField::GetType()) CField::dispatchEvent(event);
294    else if (event.classId==CFieldGroup::GetType()) CFieldGroup::dispatchEvent(event);
295    else if (event.classId==CFile::GetType()) CFile::dispatchEvent(event);
296    else if (event.classId==CFileGroup::GetType()) CFileGroup::dispatchEvent(event);
297    else if (event.classId==CVariable::GetType()) CVariable::dispatchEvent(event);
298    else
299    {
300      ERROR("void CContextServer::dispatchEvent(CEventServer& event)",<<" Bad event class Id"<<endl);
301    }
302  }
303}
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