1 | #include "grid_transform_connector.hpp" |
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2 | #include "element.hpp" |
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3 | #include "scatterer_connector.hpp" |
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4 | #include "gatherer_connector.hpp" |
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5 | #include "grid_remote_connector.hpp" |
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6 | |
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7 | |
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8 | namespace xios |
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9 | { |
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10 | void CGridTransformConnector::computeConnector(void) |
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11 | { |
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12 | int commSize ; |
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13 | int commRank ; |
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14 | MPI_Comm_size(localComm_, &commSize) ; |
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15 | MPI_Comm_rank(localComm_, &commRank) ; |
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16 | int nElements = srcViews_.size() ; |
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17 | |
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18 | CGridRemoteConnector remoteConnector(srcViews_, remoteViews_, localComm_, commSize) ; |
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19 | remoteConnector.computeConnector() ; |
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20 | |
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21 | vector<CDistributedElement*> sendElements(nElements) ; |
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22 | scattererConnector_.resize(nElements) ; |
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23 | gathererConnector_.resize(nElements) ; |
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24 | |
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25 | for(int i=0;i<nElements;i++) |
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26 | { |
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27 | sendElements[i] = new CDistributedElement(srcViews_[i]->getGlobalSize(), remoteConnector.getDistributedGlobalIndex(i)) ; |
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28 | sendElements[i]->addFullView() ; |
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29 | scattererConnector_[i] = new CScattererConnector(srcViews_[i], sendElements[i]->getView(CElementView::FULL), localComm_, commSize) ; |
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30 | scattererConnector_[i]->computeConnector() ; |
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31 | std::map<int, CArray<size_t,1>>& sendIndex = sendElements[i]->getGlobalIndex() ; |
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32 | |
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33 | // how much sender ? |
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34 | vector<int> nbSenders(commSize) ; |
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35 | int nbSender ; |
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36 | for(auto& it : sendIndex) nbSenders[it.first]=1 ; |
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37 | vector<int> recvCounts(commSize,1) ; |
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38 | MPI_Reduce_scatter(nbSenders.data(), &nbSender, recvCounts.data(), MPI_INT, MPI_SUM, localComm_) ; |
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39 | |
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40 | // transfer global index |
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41 | // send Index |
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42 | vector<MPI_Request> sendReq ; |
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43 | for(auto& it : sendIndex) |
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44 | { |
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45 | MPI_Request req ; |
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46 | MPI_Isend(it.second.dataFirst(), it.second.numElements(), MPI_SIZE_T, it.first,0, localComm_, &req) ; |
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47 | sendReq.push_back(req) ; |
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48 | } |
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49 | |
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50 | // receive index |
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51 | map<int,CArray<size_t,1>> recvIndex ; |
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52 | |
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53 | for(int j=0; j<nbSender; j++) |
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54 | { |
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55 | int size ; |
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56 | MPI_Status status ; |
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57 | MPI_Probe(MPI_ANY_SOURCE, 0, localComm_, &status ) ; |
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58 | MPI_Get_count(&status, MPI_SIZE_T, &size) ; |
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59 | vector<size_t> recvBuff(size) ; |
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60 | MPI_Recv(recvBuff.data(), size, MPI_SIZE_T, status.MPI_SOURCE,0, localComm_,&status) ; |
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61 | CArray<size_t,1> arrayTmp(recvBuff.data(), shape(recvBuff.size()), duplicateData) ; |
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62 | recvIndex[status.MPI_SOURCE].reference(arrayTmp) ; |
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63 | if (recvRankSize_.count(status.MPI_SOURCE)==0) recvRankSize_[status.MPI_SOURCE] = size ; |
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64 | else recvRankSize_[status.MPI_SOURCE] *= size ; |
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65 | } |
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66 | vector<MPI_Status> sendStatus(sendReq.size()) ; |
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67 | MPI_Waitall(sendReq.size(),sendReq.data(),sendStatus.data()) ; |
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68 | |
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69 | // create gatherer connector |
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70 | |
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71 | CDistributedElement recvElement(remoteViews_[i]->getGlobalSize(), recvIndex) ; |
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72 | recvElement.addFullView() ; |
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73 | gathererConnector_[i] = new CGathererConnector(recvElement.getView(CElementView::FULL), remoteViews_[i]) ; |
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74 | gathererConnector_[i]->computeConnector() ; |
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75 | } |
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76 | |
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77 | gridScattererConnector_ = new CGridScattererConnector(scattererConnector_) ; |
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78 | gridGathererConnector_ = new CGridGathererConnector(gathererConnector_) ; |
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79 | } |
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80 | |
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81 | } |
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