source: XIOS/dev/dev_olga/src/client.cpp @ 1180

Last change on this file since 1180 was 1180, checked in by oabramkina, 5 years ago

Two server levels:
(1) oasis works now with two server levels
(2) corrected assignment of processes between two server levels in case of non-contiguous processes
(3) corrected a bug during context finalization.

  • 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: 11.7 KB
Line 
1#include "globalScopeData.hpp"
2#include "xios_spl.hpp"
3#include "cxios.hpp"
4#include "client.hpp"
5#include <boost/functional/hash.hpp>
6#include "type.hpp"
7#include "context.hpp"
8#include "context_client.hpp"
9#include "oasis_cinterface.hpp"
10#include "mpi.hpp"
11#include "timer.hpp"
12#include "buffer_client.hpp"
13
14namespace xios
15{
16
17    MPI_Comm CClient::intraComm ;
18    MPI_Comm CClient::interComm ;
19    std::list<MPI_Comm> CClient::contextInterComms;
20    int CClient::serverLeader ;
21    bool CClient::is_MPI_Initialized ;
22    int CClient::rank_ = INVALID_RANK;
23    StdOFStream CClient::m_infoStream;
24    StdOFStream CClient::m_errorStream;
25
26    MPI_Comm& CClient::getInterComm(void)   { return (interComm); }
27
28///---------------------------------------------------------------
29/*!
30 * \fn void CClient::initialize(const string& codeId, MPI_Comm& localComm, MPI_Comm& returnComm)
31 * Function creates intraComm (CClient::intraComm) for client group with id=codeId and interComm (CClient::interComm) between client and server groups.
32 * \param [in] codeId identity of context.
33 * \param [in/out] localComm local communicator.
34 * \param [in/out] returnComm (intra)communicator of client group.
35 */
36
37    void CClient::initialize(const string& codeId, MPI_Comm& localComm, MPI_Comm& returnComm)
38    {
39      int initialized ;
40      MPI_Initialized(&initialized) ;
41      if (initialized) is_MPI_Initialized=true ;
42      else is_MPI_Initialized=false ;
43      int rank ;
44
45// don't use OASIS
46      if (!CXios::usingOasis)
47      {
48// localComm isn't given
49        if (localComm == MPI_COMM_NULL)
50        {
51          if (!is_MPI_Initialized)
52          {
53            MPI_Init(NULL, NULL);
54          }
55          CTimer::get("XIOS").resume() ;
56          CTimer::get("XIOS init/finalize").resume() ;
57          boost::hash<string> hashString ;
58
59          unsigned long hashClient=hashString(codeId) ;
60          unsigned long hashServer=hashString(CXios::xiosCodeId) ;
61          unsigned long* hashAll ;
62          int size ;
63          int myColor ;
64          int i,c ;
65          MPI_Comm newComm ;
66
67          MPI_Comm_size(CXios::globalComm,&size) ;
68          MPI_Comm_rank(CXios::globalComm,&rank_);
69
70          hashAll=new unsigned long[size] ;
71
72          MPI_Allgather(&hashClient,1,MPI_LONG,hashAll,1,MPI_LONG,CXios::globalComm) ;
73
74          map<unsigned long, int> colors ;
75          map<unsigned long, int> leaders ;
76
77          for(i=0,c=0;i<size;i++)
78          {
79            if (colors.find(hashAll[i])==colors.end())
80            {
81              colors[hashAll[i]] =c ;
82              leaders[hashAll[i]]=i ;
83              c++ ;
84            }
85          }
86
87          // Verify whether we are on server mode or not
88          CXios::setNotUsingServer();
89          for (i=0; i < size; ++i)
90          {
91            if (hashServer == hashAll[i])
92            {
93              CXios::setUsingServer();
94              break;
95            }
96          }
97
98//          myColor=colors[hashClient];
99          myColor=leaders[hashClient] ;
100          MPI_Comm_split(CXios::globalComm,myColor,rank_,&intraComm) ;
101
102          if (CXios::usingServer)
103          {
104            int clientLeader=leaders[hashClient] ;
105            serverLeader=leaders[hashServer] ;
106            int intraCommSize, intraCommRank ;
107            MPI_Comm_size(intraComm,&intraCommSize) ;
108            MPI_Comm_rank(intraComm,&intraCommRank) ;
109            info(50)<<"intercommCreate::client "<<rank_<<" intraCommSize : "<<intraCommSize
110                   <<" intraCommRank :"<<intraCommRank<<"  clientLeader "<< serverLeader<<endl ;
111             MPI_Intercomm_create(intraComm, 0, CXios::globalComm, serverLeader, 0, &interComm) ;
112             //rank_ = intraCommRank;
113          }
114          else
115          {
116            MPI_Comm_dup(intraComm,&interComm) ;
117          }
118          delete [] hashAll ;
119        }
120        // localComm argument is given
121        else
122        {
123          if (CXios::usingServer)
124          {
125            //ERROR("void CClient::initialize(const string& codeId,MPI_Comm& localComm,MPI_Comm& returnComm)", << " giving a local communictor is not compatible with using server mode") ;
126          }
127          else
128          {
129            MPI_Comm_dup(localComm,&intraComm) ;
130            MPI_Comm_dup(intraComm,&interComm) ;
131          }
132        }
133      }
134      // using OASIS
135      else
136      {
137        // localComm isn't given
138        if (localComm == MPI_COMM_NULL)
139        {
140          if (!is_MPI_Initialized) oasis_init(codeId) ;
141          oasis_get_localcomm(localComm) ;
142        }
143        MPI_Comm_dup(localComm,&intraComm) ;
144
145        CTimer::get("XIOS").resume() ;
146        CTimer::get("XIOS init/finalize").resume() ;
147
148        if (CXios::usingServer)
149        {
150          MPI_Status status ;
151          MPI_Comm_rank(intraComm,&rank) ;
152
153          oasis_get_intercomm(interComm,CXios::xiosCodeId) ;
154          if (rank==0) MPI_Recv(&serverLeader,1, MPI_INT, 0, 0, interComm, &status) ;
155          MPI_Bcast(&serverLeader,1,MPI_INT,0,intraComm) ;
156
157        }
158        else MPI_Comm_dup(intraComm,&interComm) ;
159      }
160
161      MPI_Comm_dup(intraComm,&returnComm) ;
162    }
163
164///---------------------------------------------------------------
165/*!
166 * \fn void CClient::registerContext(const string& id, MPI_Comm contextComm)
167 * \brief Sends a request to create a context to server. Creates client/server contexts.
168 * \param [in] id id of context.
169 * \param [in] contextComm.
170 * Function is only called by client.
171 */
172    void CClient::registerContext(const string& id, MPI_Comm contextComm)
173    {
174      CContext::setCurrent(id) ;
175      CContext* context=CContext::create(id);
176      StdString idServer(id);
177      idServer += "_server";
178
179      if (CXios::isServer && !context->hasServer)
180      // Attached mode
181      {
182        MPI_Comm contextInterComm ;
183        MPI_Comm_dup(contextComm,&contextInterComm) ;
184        CContext* contextServer = CContext::create(idServer);
185
186        // Firstly, initialize context on client side
187        context->initClient(contextComm,contextInterComm, contextServer);
188
189        // Secondly, initialize context on server side
190        contextServer->initServer(contextComm,contextInterComm, context);
191
192        // Finally, we should return current context to context client
193        CContext::setCurrent(id);
194
195        contextInterComms.push_back(contextInterComm);
196      }
197      else
198      {
199        int size,rank,globalRank ;
200        size_t message_size ;
201        int leaderRank ;
202        MPI_Comm contextInterComm ;
203
204        MPI_Comm_size(contextComm,&size) ;
205        MPI_Comm_rank(contextComm,&rank) ;
206        MPI_Comm_rank(CXios::globalComm,&globalRank) ;
207        if (rank!=0) globalRank=0 ;
208
209        CMessage msg ;
210        msg<<idServer<<size<<globalRank ;
211//        msg<<id<<size<<globalRank ;
212
213        int messageSize=msg.size() ;
214        char * buff = new char[messageSize] ;
215        CBufferOut buffer((void*)buff,messageSize) ;
216        buffer<<msg ;
217
218        MPI_Send((void*)buff,buffer.count(),MPI_CHAR,serverLeader,1,CXios::globalComm) ;
219
220        MPI_Intercomm_create(contextComm,0,CXios::globalComm,serverLeader,10+globalRank,&contextInterComm) ;
221        info(10)<<"Register new Context : "<<id<<endl ;
222        MPI_Comm inter ;
223        MPI_Intercomm_merge(contextInterComm,0,&inter) ;
224        MPI_Barrier(inter) ;
225
226        context->initClient(contextComm,contextInterComm) ;
227
228        contextInterComms.push_back(contextInterComm);
229        MPI_Comm_free(&inter);
230        delete [] buff ;
231
232      }
233    }
234
235    void CClient::finalize(void)
236    {
237      int rank ;
238      int msg=0 ;
239
240      MPI_Comm_rank(intraComm,&rank) ;
241 
242      if (!CXios::isServer)
243      {
244        MPI_Comm_rank(intraComm,&rank) ;
245        if (rank==0)
246        {
247          MPI_Send(&msg,1,MPI_INT,0,0,interComm) ;
248        }
249      }
250
251      for (std::list<MPI_Comm>::iterator it = contextInterComms.begin(); it != contextInterComms.end(); it++)
252        MPI_Comm_free(&(*it));
253      MPI_Comm_free(&interComm);
254      MPI_Comm_free(&intraComm);
255
256      CTimer::get("XIOS init/finalize").suspend() ;
257      CTimer::get("XIOS").suspend() ;
258
259      if (!is_MPI_Initialized)
260      {
261        if (CXios::usingOasis) oasis_finalize();
262        else MPI_Finalize() ;
263      }
264     
265      info(20) << "Client side context is finalized"<<endl ;
266      report(0) <<" Performance report : Whole time from XIOS init and finalize: "<< CTimer::get("XIOS init/finalize").getCumulatedTime()<<" s"<<endl ;
267      report(0) <<" Performance report : total time spent for XIOS : "<< CTimer::get("XIOS").getCumulatedTime()<<" s"<<endl ;
268      report(0)<< " Performance report : time spent for waiting free buffer : "<< CTimer::get("Blocking time").getCumulatedTime()<<" s"<<endl ;
269      report(0)<< " Performance report : Ratio : "<< CTimer::get("Blocking time").getCumulatedTime()/CTimer::get("XIOS init/finalize").getCumulatedTime()*100.<<" %"<<endl ;
270      report(0)<< " Performance report : This ratio must be close to zero. Otherwise it may be usefull to increase buffer size or numbers of server"<<endl ;
271//      report(0)<< " Memory report : Current buffer_size : "<<CXios::bufferSize<<endl ;
272      report(0)<< " Memory report : Minimum buffer size required : " << CClientBuffer::maxRequestSize << " bytes" << endl ;
273      report(0)<< " Memory report : increasing it by a factor will increase performance, depending of the volume of data wrote in file at each time step of the file"<<endl ;
274      report(100)<<CTimer::getAllCumulatedTime()<<endl ;
275   }
276
277    /*!
278    * Return rank in model intraComm
279    */
280   int CClient::getRank()
281   {
282     return rank_;
283   }
284
285    /*!
286    * Open a file specified by a suffix and an extension and use it for the given file buffer.
287    * The file name will be suffix+rank+extension.
288    *
289    * \param fileName[in] protype file name
290    * \param ext [in] extension of the file
291    * \param fb [in/out] the file buffer
292    */
293    void CClient::openStream(const StdString& fileName, const StdString& ext, std::filebuf* fb)
294    {
295      StdStringStream fileNameClient;
296      int numDigit = 0;
297      int size = 0;
298      MPI_Comm_size(CXios::globalComm, &size);
299      while (size)
300      {
301        size /= 10;
302        ++numDigit;
303      }
304
305      fileNameClient << fileName << "_" << std::setfill('0') << std::setw(numDigit) << getRank() << ext;
306      fb->open(fileNameClient.str().c_str(), std::ios::out);
307      if (!fb->is_open())
308        ERROR("void CClient::openStream(const StdString& fileName, const StdString& ext, std::filebuf* fb)",
309              << std::endl << "Can not open <" << fileNameClient << "> file to write the client log(s).");
310    }
311
312    /*!
313    * \brief Open a file stream to write the info logs
314    * Open a file stream with a specific file name suffix+rank
315    * to write the info logs.
316    * \param fileName [in] protype file name
317    */
318    void CClient::openInfoStream(const StdString& fileName)
319    {
320      std::filebuf* fb = m_infoStream.rdbuf();
321      openStream(fileName, ".out", fb);
322
323      info.write2File(fb);
324      report.write2File(fb);
325    }
326
327    //! Write the info logs to standard output
328    void CClient::openInfoStream()
329    {
330      info.write2StdOut();
331      report.write2StdOut();
332    }
333
334    //! Close the info logs file if it opens
335    void CClient::closeInfoStream()
336    {
337      if (m_infoStream.is_open()) m_infoStream.close();
338    }
339
340    /*!
341    * \brief Open a file stream to write the error log
342    * Open a file stream with a specific file name suffix+rank
343    * to write the error log.
344    * \param fileName [in] protype file name
345    */
346    void CClient::openErrorStream(const StdString& fileName)
347    {
348      std::filebuf* fb = m_errorStream.rdbuf();
349      openStream(fileName, ".err", fb);
350
351      error.write2File(fb);
352    }
353
354    //! Write the error log to standard error output
355    void CClient::openErrorStream()
356    {
357      error.write2StdErr();
358    }
359
360    //! Close the error log file if it opens
361    void CClient::closeErrorStream()
362    {
363      if (m_errorStream.is_open()) m_errorStream.close();
364    }
365}
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