1 | #include "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 "client_client_dht_template.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 CTransformConnector::computeConnector(void) |
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11 | { |
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12 | CClientClientDHTTemplate<int>::Index2VectorInfoTypeMap info ; |
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13 | |
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14 | // first, insert destination global index into DHT |
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15 | int rank ; |
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16 | MPI_Comm_rank(localComm_, &rank) ; |
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17 | CArray<size_t,1> globalIndex ; |
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18 | dstView_->getGlobalIndexView(globalIndex) ; |
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19 | for(int i=0;i<globalIndex.numElements();i++) info[globalIndex(i)].push_back(rank) ; |
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20 | CClientClientDHTTemplate<int> dataRanks(info, localComm_) ; |
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21 | |
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22 | // get global src index from src view. |
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23 | set<size_t> setGlobalIndex ; // all global index from src |
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24 | srcView_->getGlobalIndexView(globalIndex) ; |
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25 | for(int i=0;i<globalIndex.numElements();i++) setGlobalIndex.insert(globalIndex((i))) ; |
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26 | |
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27 | CArray<size_t,1> srcGlobalIndex(setGlobalIndex.size()) ; |
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28 | int i=0 ; |
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29 | for(auto& globalIndex : setGlobalIndex) |
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30 | { |
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31 | srcGlobalIndex(i) = globalIndex ; |
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32 | i++ ; |
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33 | } |
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34 | |
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35 | dataRanks.computeIndexInfoMapping(srcGlobalIndex) ; |
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36 | const auto& returnInfo = dataRanks.getInfoIndexMap() ; |
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37 | |
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38 | map<int,vector<size_t>> vectorIndex ; |
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39 | for(auto& rankIndGlo : returnInfo) |
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40 | { |
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41 | size_t indGlo = rankIndGlo.first ; |
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42 | auto& listRank = rankIndGlo.second ; |
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43 | for (auto& rank : listRank) vectorIndex[rank].push_back(indGlo); |
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44 | } |
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45 | |
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46 | // convert vectorIndex into array |
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47 | map<int,CArray<size_t,1>> dstArrayIndex ; |
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48 | for(auto& rankIndGlo : vectorIndex) |
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49 | { |
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50 | int rank = rankIndGlo.first ; |
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51 | auto& indexVector = rankIndGlo.second ; |
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52 | auto& arrayIndex = dstArrayIndex[rank] ; |
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53 | CArray<size_t,1> arrayTmp(indexVector.data(), shape(indexVector.size()), duplicateData) ; |
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54 | dstArrayIndex[rank].reference(arrayTmp) ; |
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55 | } |
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56 | |
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57 | // distributed element : where to send data |
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58 | CDistributedElement dstElement(srcView_->getGlobalSize(), dstArrayIndex) ; |
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59 | dstElement.addFullView() ; |
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60 | |
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61 | // create scatterer connector |
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62 | int commSize ; |
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63 | MPI_Comm_size(localComm_, &commSize) ; |
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64 | scattererConnector_ = new CScattererConnector(srcView_, dstElement.getView(CElementView::FULL), localComm_, commSize ) ; |
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65 | scattererConnector_->computeConnector() ; |
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66 | |
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67 | // how much sender ? |
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68 | vector<int> nbSenders(commSize) ; |
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69 | int nbSender ; |
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70 | for(auto& it : dstArrayIndex) nbSenders[it.first]=1 ; |
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71 | vector<int> recvCounts(commSize,1) ; |
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72 | MPI_Reduce_scatter(nbSenders.data(), &nbSender, recvCounts.data(), MPI_INT, MPI_SUM, localComm_) ; |
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73 | |
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74 | // transfer global index |
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75 | map<int,CArray<size_t,1>> remoteArrayIndex ; |
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76 | |
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77 | vector<MPI_Request> sendReq ; |
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78 | for(auto& it : dstArrayIndex) |
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79 | { |
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80 | MPI_Request req ; |
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81 | MPI_Isend(it.second.dataFirst(), it.second.numElements(), MPI_SIZE_T, it.first,0, localComm_,&req) ; |
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82 | sendReq.push_back(req) ; |
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83 | } |
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84 | |
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85 | for(int i=0; i<nbSender; i++) |
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86 | { |
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87 | int size ; |
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88 | MPI_Status status ; |
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89 | MPI_Probe(MPI_ANY_SOURCE, 0, localComm_, &status ) ; |
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90 | MPI_Get_count(&status, MPI_SIZE_T, &size) ; |
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91 | vector<size_t> recvBuff(size) ; |
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92 | MPI_Recv(recvBuff.data(), size, MPI_SIZE_T, status.MPI_SOURCE,0,localComm_,&status) ; |
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93 | CArray<size_t,1> arrayTmp(recvBuff.data(), shape(recvBuff.size()), duplicateData) ; |
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94 | remoteArrayIndex[status.MPI_SOURCE].reference(arrayTmp) ; |
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95 | recvRankSize_[status.MPI_SOURCE] = size ; |
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96 | } |
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97 | vector<MPI_Status> sendStatus(sendReq.size()) ; |
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98 | MPI_Waitall(sendReq.size(),sendReq.data(),sendStatus.data()) ; |
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99 | |
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100 | CDistributedElement remoteElement(dstView_->getGlobalSize(), remoteArrayIndex) ; |
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101 | remoteElement.addFullView() ; |
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102 | gathererConnector_=new CGathererConnector(remoteElement.getView(CElementView::FULL),dstView_) ; |
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103 | gathererConnector_->computeConnector() ; |
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104 | |
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105 | } |
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106 | } |
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