1 | #include "grid_remote_connector.hpp" |
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2 | #include "client_client_dht_template.hpp" |
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3 | |
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4 | |
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5 | |
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6 | namespace xios |
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7 | { |
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8 | |
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9 | CGridRemoteConnector::CGridRemoteConnector(vector<CLocalView*>& srcView, vector<CDistributedView*>& dstView, MPI_Comm localComm) |
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10 | : srcView_(srcView), dstView_(dstView), localComm_(localComm) |
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11 | {} |
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12 | |
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13 | void CGridRemoteConnector::computeConnector(void) |
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14 | { |
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15 | computeGenericMethod() ; |
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16 | } |
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17 | |
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18 | void CGridRemoteConnector::computeGenericMethod(void) |
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19 | { |
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20 | // generic method, every element can be distributed |
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21 | CClientClientDHTTemplate<int>::Index2VectorInfoTypeMap info ; // info map |
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22 | |
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23 | // generate list of global index for dst view, and insert it into DHT map |
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24 | int nDst = dstView_.size() ; |
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25 | vector<size_t> dstGlobalIndex ; |
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26 | vector<size_t> dstSliceSize(nDst) ; |
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27 | dstSliceSize[nDst-1] = 1 ; |
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28 | for(int i=nDst-2; i>=0; i--) dstSliceSize[i] = dstView_[i+1]->getGlobalSize()*dstSliceSize[i+1] ; |
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29 | for(auto& ranks : dstView_[0]->getLocalSize()) |
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30 | { |
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31 | dstGlobalIndex.clear() ; |
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32 | int rank=ranks.first ; |
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33 | size_t sliceIndex=0 ; |
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34 | dstView_[nDst-1]->getGlobalIndex(rank, dstGlobalIndex, sliceIndex, dstSliceSize.data(), dstView_.data(), nDst-1) ; |
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35 | for(auto globalIndex : dstGlobalIndex) info[globalIndex].push_back(rank) ; // insert into DHT |
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36 | } |
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37 | |
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38 | CClientClientDHTTemplate<int> dataRanks(info, localComm_) ; |
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39 | |
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40 | // generate list of global index for src view |
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41 | int nSrc = srcView_.size() ; |
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42 | vector<size_t> srcSliceSize(nSrc) ; |
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43 | srcSliceSize[nSrc-1] = 1 ; |
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44 | for(int i=nSrc-2; i>=0; i--) srcSliceSize[i] = srcView_[i+1]->getGlobalSize()*srcSliceSize[i+1] ; |
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45 | |
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46 | vector<size_t> srcGlobalIndex ; |
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47 | size_t sliceIndex=0 ; |
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48 | srcView_[nSrc-1]->getGlobalIndex(srcGlobalIndex, sliceIndex, srcSliceSize.data(), srcView_.data(), nSrc-1) ; |
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49 | |
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50 | CArray<size_t,1> srcGlobalIndexArray(srcGlobalIndex.data(), shape(srcGlobalIndex.size()),neverDeleteData) ; |
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51 | dataRanks.computeIndexInfoMapping(srcGlobalIndexArray) ; |
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52 | const auto& returnInfo = dataRanks.getInfoIndexMap() ; |
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53 | |
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54 | vector<map<int, set<size_t>>> elements(nSrc) ; // internal representation of elements composing the grid |
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55 | |
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56 | srcSliceSize[nSrc-1] = srcView_[nSrc-1]->getGlobalSize() ; |
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57 | for(int i=nSrc-2 ; i>=0 ; i--) srcSliceSize[i] = srcView_[i]->getGlobalSize()*srcSliceSize[i+1] ; |
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58 | |
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59 | for(auto& indRanks : returnInfo) |
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60 | { |
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61 | size_t gridIndexGlo=indRanks.first ; |
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62 | auto& ranks = indRanks.second ; |
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63 | for(int i=0;i<nSrc;i++) |
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64 | { |
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65 | auto& element = elements[i] ; |
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66 | size_t localIndGlo = gridIndexGlo % srcSliceSize[i] ; |
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67 | for(int rank : ranks) element[rank].insert(localIndGlo) ; |
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68 | } |
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69 | } |
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70 | |
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71 | elements_.resize(nSrc) ; |
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72 | for(int i=0 ; i<nSrc; i++) |
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73 | { |
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74 | auto& element=elements[i] ; |
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75 | for(auto& rankInd : element) |
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76 | { |
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77 | int rank=rankInd.first ; |
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78 | set<size_t>& indGlo = rankInd.second ; |
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79 | CArray<size_t,1>& indGloArray = elements_[i][rank] ; |
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80 | indGloArray.resize(indGlo.size()) ; |
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81 | int j=0 ; |
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82 | for (auto index : indGlo) { indGloArray(j) = index ; j++; } |
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83 | } |
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84 | } |
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85 | } |
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86 | |
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87 | } |
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