[688] | 1 | #include "mpi_routing.hpp" |
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[694] | 2 | #include "mpi.hpp" |
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[688] | 3 | #include "node.hpp" |
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| 4 | #include "elt.hpp" |
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| 5 | #include "timerRemap.hpp" |
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| 6 | #include <iostream> |
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[1328] | 7 | using namespace ep_lib; |
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[688] | 8 | |
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| 9 | namespace sphereRemap { |
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| 10 | |
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| 11 | const int verbose = 0; |
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| 12 | |
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| 13 | CMPIRouting::CMPIRouting(MPI_Comm comm) : communicator(comm) |
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| 14 | { |
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| 15 | MPI_Comm_rank(comm, &mpiRank); |
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| 16 | MPI_Comm_size(comm, &mpiSize); |
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| 17 | } |
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| 18 | |
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| 19 | /* sparse alltoallv when it is known that only a subset of ranks will communicate, |
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| 20 | but message lengths are *known* to receiver */ |
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| 21 | template <typename T> |
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| 22 | void alltoalls_known(const vector<vector<T> >& send, vector<vector<T> >& recv, const vector<int>& ranks, MPI_Comm communicator) |
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| 23 | { |
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| 24 | vector<MPI_Request> request(ranks.size() * 2); |
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| 25 | vector<MPI_Status> status(ranks.size() * 2); |
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| 26 | |
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| 27 | // communicate data |
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| 28 | int nbRequest = 0; |
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| 29 | for (int i = 0; i < ranks.size(); i++) |
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| 30 | if (recv[i].size()) |
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| 31 | MPI_Irecv(&recv[i][0], recv[i].size()*sizeof(T), MPI_CHAR, ranks[i], 0, communicator, &request[nbRequest++]); |
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| 32 | for (int i = 0; i < ranks.size(); i++) |
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| 33 | if (send[i].size()) |
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| 34 | MPI_Isend((void *) &send[i][0], send[i].size()*sizeof(T), MPI_CHAR, ranks[i], 0, communicator, &request[nbRequest++]); |
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| 35 | MPI_Waitall(nbRequest, &request[0], &status[0]); |
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| 36 | } |
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| 37 | |
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| 38 | /* sparse alltoallv when it is known that only a subset of ranks will communicate, |
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| 39 | but message lengths are *unknown* to receiver */ |
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| 40 | template <typename T> |
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| 41 | void alltoalls_unknown(const vector<vector<T> >& send, vector<vector<T> >& recv, const vector<int>& ranks, MPI_Comm communicator) |
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| 42 | { |
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| 43 | vector<MPI_Request> request(ranks.size() * 2); |
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| 44 | vector<MPI_Status> status(ranks.size() * 2); |
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| 45 | |
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| 46 | // communicate sizes |
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| 47 | int nbRequest = 0; |
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| 48 | vector<int> sendSizes(ranks.size()); |
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| 49 | vector<int> recvSizes(ranks.size()); |
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| 50 | for (int i = 0; i < ranks.size(); i++) |
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| 51 | sendSizes[i] = send[i].size(); |
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| 52 | for (int i = 0; i < ranks.size(); i++) |
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| 53 | MPI_Irecv(&recvSizes[i], 1, MPI_INT, ranks[i], 0, communicator, &request[nbRequest++]); |
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| 54 | for (int i = 0; i < ranks.size(); i++) |
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| 55 | MPI_Isend(&sendSizes[i], 1, MPI_INT, ranks[i], 0, communicator, &request[nbRequest++]); |
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| 56 | MPI_Waitall(nbRequest, &request[0], &status[0]); |
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| 57 | |
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| 58 | // allocate |
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| 59 | for (int i = 0; i < ranks.size(); i++) |
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| 60 | if (recvSizes[i]) recv[i].resize(recvSizes[i]); |
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| 61 | // communicate data |
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| 62 | alltoalls_known(send, recv, ranks, communicator); |
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| 63 | } |
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| 64 | |
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| 65 | void setElementsSendCnt(int route, vector<int>& sendCnt) |
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| 66 | { |
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| 67 | sendCnt[route]++; |
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| 68 | } |
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| 69 | |
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| 70 | void setElementsSendCnt(const vector<int>& route, vector<int>& sendCnt) |
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| 71 | { |
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| 72 | for (int i = 0; i < route.size(); i++) |
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| 73 | sendCnt[route[i]]++; |
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| 74 | } |
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| 75 | |
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| 76 | void setTargetElementIndex(int route, vector<int>& indices, const int *rankToIndex) |
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| 77 | { |
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| 78 | int index = rankToIndex[route]; |
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| 79 | indices.push_back(index); |
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| 80 | } |
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| 81 | |
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| 82 | void setTargetElementIndex(const vector<int>& route, vector<int>& indices, const int *rankToIndex) |
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| 83 | { |
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| 84 | for (int i = 0; i < route.size(); i++) |
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| 85 | { |
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| 86 | int index = rankToIndex[route[i]]; |
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| 87 | indices.push_back(index); |
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| 88 | } |
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| 89 | } |
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| 90 | |
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| 91 | template<typename T> |
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| 92 | void CMPIRouting::init(const vector<T>& route, CMPICascade *cascade) |
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| 93 | { |
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| 94 | vector<int> nbElementSend(mpiSize); |
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| 95 | int *toSend = new int[mpiSize]; |
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| 96 | int *recvCount = new int[mpiSize]; |
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| 97 | int *targetRankToIndex; |
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| 98 | |
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| 99 | for (int i = 0; i < route.size(); i++) |
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| 100 | setElementsSendCnt(route[i], nbElementSend); |
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| 101 | |
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| 102 | nbTarget = 0; |
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| 103 | vector<int> destRanks; |
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| 104 | for (int i = 0; i < mpiSize; i++) |
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| 105 | { |
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| 106 | if (nbElementSend[i] == 0) |
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| 107 | toSend[i] = 0; |
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| 108 | else |
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| 109 | { |
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| 110 | destRanks.push_back(i); |
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| 111 | toSend[i] = 1; |
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| 112 | nbTarget++; |
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| 113 | } |
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| 114 | recvCount[i] = 1; |
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| 115 | } |
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| 116 | //int recvCntDeb = (stree) ? stree->scatter_reduce(destRanks) : -1; |
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| 117 | |
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| 118 | MPI_Barrier(communicator); |
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| 119 | CTimer::get("CMPIRouting::init(reduce_scatter)").reset(); |
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| 120 | CTimer::get("CMPIRouting::init(reduce_scatter)").resume(); |
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| 121 | MPI_Reduce_scatter(toSend, &nbSource, recvCount, MPI_INT, MPI_SUM, communicator); |
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| 122 | CTimer::get("CMPIRouting::init(reduce_scatter)").suspend(); |
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| 123 | CTimer::get("CMPIRouting::init(reduce_scatter)").print(); |
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| 124 | |
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[1289] | 125 | MPI_Alloc_mem(nbTarget *sizeof(int), MPI_INFO_NULL, &targetRank); |
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| 126 | MPI_Alloc_mem(nbSource *sizeof(int), MPI_INFO_NULL, &sourceRank); |
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[1134] | 127 | |
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[688] | 128 | targetRankToIndex = new int[mpiSize]; |
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| 129 | int index = 0; |
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| 130 | for (int i = 0; i < mpiSize; i++) |
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| 131 | { |
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| 132 | if (toSend[i] == 1) |
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| 133 | { |
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| 134 | targetRank[index] = i; |
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| 135 | targetRankToIndex[i] = index; |
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| 136 | index++; |
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| 137 | } |
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| 138 | } |
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| 139 | |
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| 140 | MPI_Barrier(communicator); |
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| 141 | CTimer::get("CMPIRouting::init(get_source)").reset(); |
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| 142 | CTimer::get("CMPIRouting::init(get_source)").resume(); |
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| 143 | |
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| 144 | MPI_Request *request = new MPI_Request[nbSource + nbTarget]; |
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| 145 | MPI_Status *status = new MPI_Status[nbSource + nbTarget]; |
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| 146 | |
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| 147 | int indexRequest = 0; |
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| 148 | if (verbose) cout << "CMPIRouting::init nbSource : " << nbSource << " nbTarget : " << nbTarget << endl; |
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| 149 | // assert(recvCntDeb == -1 || recvCntDeb == nbSource); |
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| 150 | //cout << mpiRank << "DEB : " << recvCntDeb << " nbSource " << nbSource << " nbTarget : " << nbTarget << endl; |
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| 151 | for (int i = 0; i < nbSource; i++) |
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| 152 | { |
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[1134] | 153 | #ifdef _usingEP |
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[1328] | 154 | MPI_Irecv(&sourceRank[i], 1, MPI_INT, -2, 0, communicator, &request[indexRequest]); |
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[1134] | 155 | #else |
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[688] | 156 | MPI_Irecv(&sourceRank[i], 1, MPI_INT, MPI_ANY_SOURCE, 0, communicator, &request[indexRequest]); |
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[1134] | 157 | #endif |
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[688] | 158 | indexRequest++; |
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| 159 | } |
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| 160 | MPI_Barrier(communicator); |
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| 161 | for (int i = 0; i < nbTarget; i++) |
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| 162 | { |
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| 163 | MPI_Isend(&mpiRank, 1, MPI_INT, targetRank[i], 0, communicator, &request[indexRequest]); |
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| 164 | indexRequest++; |
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| 165 | } |
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| 166 | MPI_Waitall(indexRequest, request, status); |
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| 167 | MPI_Barrier(communicator); //needed |
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| 168 | CTimer::get("CMPIRouting::init(get_source)").suspend(); |
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| 169 | CTimer::get("CMPIRouting::init(get_source)").print(); |
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| 170 | |
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| 171 | CTimer::get("CMPIRouting::init(get_source)").reset(); |
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| 172 | CTimer::get("CMPIRouting::init(get_source)").resume(); |
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| 173 | |
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| 174 | indexRequest = 0; |
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| 175 | for (int i = 0; i < nbSource; i++) |
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| 176 | { |
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[1134] | 177 | #ifdef _usingEP |
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[1328] | 178 | MPI_Irecv(&sourceRank[i], 1, MPI_INT, -2, 0, communicator, &request[indexRequest]); |
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[1134] | 179 | #else |
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[688] | 180 | MPI_Irecv(&sourceRank[i], 1, MPI_INT, MPI_ANY_SOURCE, 0, communicator, &request[indexRequest]); |
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[1134] | 181 | #endif |
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[688] | 182 | indexRequest++; |
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| 183 | } |
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| 184 | |
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| 185 | for (int i = 0; i < nbTarget; i++) |
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| 186 | { |
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| 187 | MPI_Isend(&mpiRank, 1, MPI_INT, targetRank[i], 0, communicator, &request[indexRequest]); |
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| 188 | indexRequest++; |
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| 189 | } |
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| 190 | MPI_Waitall(indexRequest, request, status); |
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| 191 | MPI_Barrier(communicator); |
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| 192 | CTimer::get("CMPIRouting::init(get_source)").suspend(); |
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| 193 | CTimer::get("CMPIRouting::init(get_source)").print(); |
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| 194 | |
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| 195 | CTimer::get("CMPIRouting::init(send_element)").reset(); |
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| 196 | CTimer::get("CMPIRouting::init(send_element)").resume(); |
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| 197 | |
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| 198 | nbTargetElement.resize(nbTarget); |
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| 199 | nbSourceElement.resize(nbSource); |
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| 200 | |
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| 201 | for (int i = 0; i < route.size(); i++) |
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| 202 | setTargetElementIndex(route[i], targetElementIndex, targetRankToIndex); |
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| 203 | |
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| 204 | for (int i = 0; i < targetElementIndex.size(); i++) |
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| 205 | nbTargetElement[targetElementIndex[i]]++; |
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| 206 | |
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| 207 | indexRequest = 0; |
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| 208 | totalSourceElement = 0; |
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| 209 | totalTargetElement = 0; |
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| 210 | for (int i = 0; i < nbSource; i++) |
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| 211 | { |
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| 212 | MPI_Irecv(&nbSourceElement[i], 1, MPI_INT, sourceRank[i], 0, communicator, &request[indexRequest]); |
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| 213 | indexRequest++; |
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| 214 | } |
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| 215 | |
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| 216 | for (int i = 0; i < nbTarget; i++) |
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| 217 | { |
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| 218 | totalTargetElement += nbTargetElement[i]; |
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| 219 | MPI_Isend(&nbTargetElement[i], 1, MPI_INT, targetRank[i], 0, communicator, &request[indexRequest]); |
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| 220 | indexRequest++; |
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| 221 | } |
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| 222 | |
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| 223 | MPI_Waitall(indexRequest, request, status); |
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| 224 | |
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| 225 | CTimer::get("CMPIRouting::init(send_element)").suspend(); |
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| 226 | CTimer::get("CMPIRouting::init(send_element)").print(); |
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| 227 | |
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| 228 | totalSourceElement = 0; |
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| 229 | for (int i = 0; i < nbSource; i++) |
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| 230 | totalSourceElement += nbSourceElement[i]; |
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| 231 | |
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| 232 | sourceElementIndex.resize(totalSourceElement); |
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| 233 | |
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| 234 | totalSourceElement = 0; |
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| 235 | for (int i = 0; i < nbSource; i++) |
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| 236 | { |
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| 237 | for (int j = 0; j < nbSourceElement[i]; j++) |
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| 238 | { |
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| 239 | sourceElementIndex[totalSourceElement] = i; |
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| 240 | totalSourceElement++; |
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| 241 | } |
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| 242 | } |
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| 243 | |
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| 244 | delete[] toSend; |
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| 245 | delete[] recvCount; |
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| 246 | delete[] request; |
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| 247 | delete[] status; |
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| 248 | } |
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| 249 | |
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| 250 | |
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| 251 | int CMPIRouting::getTotalSourceElement(void) |
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| 252 | { |
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| 253 | return totalSourceElement; |
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| 254 | } |
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| 255 | |
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| 256 | template<typename T> |
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| 257 | void CMPIRouting::transferToTarget(T* targetElements, T* sourceElements) |
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| 258 | { |
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| 259 | char** targetBuffer = new char*[nbTarget]; |
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| 260 | int* indexTargetBuffer = new int[nbTarget]; |
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| 261 | |
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| 262 | for(int i=0;i<nbTarget; i++) |
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| 263 | { |
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| 264 | targetBuffer[i] = new char[sizeof(T)*nbTargetElement[i]]; |
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| 265 | indexTargetBuffer[i]= 0; |
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| 266 | } |
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| 267 | |
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| 268 | char** sourceBuffer = new char*[nbSource]; |
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| 269 | int* indexSourceBuffer = new int[nbSource]; |
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| 270 | |
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| 271 | for(int i=0;i<nbSource; i++) |
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| 272 | { |
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| 273 | sourceBuffer[i] = new char[sizeof(T)*nbSourceElement[i]]; |
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| 274 | indexSourceBuffer[i]= 0; |
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| 275 | } |
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| 276 | |
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| 277 | // pack the data |
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| 278 | int index; |
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| 279 | for(int i=0;i<totalTargetElement;i++) |
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| 280 | { |
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| 281 | index=targetElementIndex[i]; |
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| 282 | *((T*) &(targetBuffer[index][indexTargetBuffer[index]])) = targetElements[i]; |
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| 283 | indexTargetBuffer[index]+=sizeof(T); |
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| 284 | } |
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| 285 | |
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| 286 | |
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| 287 | MPI_Request* request=new MPI_Request[nbSource+nbTarget]; |
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| 288 | MPI_Status* status=new MPI_Status[nbSource+nbTarget]; |
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| 289 | int indexRequest=0; |
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| 290 | |
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| 291 | MPI_Barrier(communicator); |
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| 292 | CTimer::get("CMPIRouting::transferToTarget").reset(); |
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| 293 | CTimer::get("CMPIRouting::transferToTarget").resume(); |
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| 294 | |
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| 295 | for(int i=0; i<nbSource; i++) |
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| 296 | { |
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| 297 | MPI_Irecv(sourceBuffer[i],nbSourceElement[i]*sizeof(T),MPI_CHAR, sourceRank[i], 0, communicator, &request[indexRequest]); |
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| 298 | indexRequest++; |
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| 299 | } |
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| 300 | |
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| 301 | for(int i=0;i<nbTarget; i++) |
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| 302 | { |
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| 303 | MPI_Isend(targetBuffer[i],nbTargetElement[i]*sizeof(T), MPI_CHAR, targetRank[i], 0, communicator, &request[indexRequest]); |
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| 304 | indexRequest++; |
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| 305 | } |
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| 306 | |
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| 307 | MPI_Waitall(indexRequest,request,status); |
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| 308 | |
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| 309 | CTimer::get("CMPIRouting::transferToTarget").suspend(); |
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| 310 | CTimer::get("CMPIRouting::transferToTarget").print(); |
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| 311 | MPI_Barrier(communicator); |
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| 312 | |
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| 313 | // unpack the data |
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| 314 | for(int i=0;i<totalSourceElement;i++) |
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| 315 | { |
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| 316 | index=sourceElementIndex[i]; |
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| 317 | sourceElements[i] = *((T*) &(sourceBuffer[index][indexSourceBuffer[index]])); |
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| 318 | indexSourceBuffer[index]+=sizeof(T); |
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| 319 | } |
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| 320 | |
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| 321 | for(int i=0;i<nbTarget; i++) delete[] targetBuffer[i]; |
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| 322 | for(int i=0;i<nbSource; i++) delete[] sourceBuffer[i]; |
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| 323 | delete[] targetBuffer; |
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| 324 | delete[] indexTargetBuffer; |
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| 325 | delete[] sourceBuffer; |
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| 326 | delete[] indexSourceBuffer; |
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| 327 | delete[] request; |
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| 328 | delete[] status; |
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| 329 | } |
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| 330 | |
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| 331 | |
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| 332 | template<typename T, typename t_pack, typename t_unpack> |
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| 333 | void CMPIRouting::transferToTarget(T* targetElements, T* sourceElements, t_pack pack, t_unpack unpack) |
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| 334 | { |
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| 335 | char** targetBuffer = new char*[nbTarget]; |
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| 336 | int* indexTargetBuffer = new int[nbTarget]; |
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| 337 | int* targetMessageSize = new int[nbTarget]; |
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| 338 | int* sourceMessageSize = new int[nbSource]; |
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| 339 | int index; |
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| 340 | |
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| 341 | // compute target buffer size |
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| 342 | for (int i = 0; i < nbTarget; i++) |
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| 343 | targetMessageSize[i] = 0; |
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| 344 | |
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| 345 | for (int i = 0; i < totalTargetElement; i++) |
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| 346 | { |
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| 347 | index = targetElementIndex[i]; |
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| 348 | pack(targetElements[i], NULL, targetMessageSize[index]); |
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| 349 | } |
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| 350 | |
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| 351 | MPI_Request *request = new MPI_Request[nbSource + nbTarget]; |
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| 352 | MPI_Status *status = new MPI_Status[nbSource + nbTarget]; |
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| 353 | int indexRequest = 0; |
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| 354 | |
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| 355 | MPI_Barrier(communicator); |
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| 356 | CTimer::get("CMPIRouting::transferToTarget(messageSize)").reset(); |
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| 357 | CTimer::get("CMPIRouting::transferToTarget(messageSize)").resume(); |
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| 358 | |
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| 359 | for(int i=0; i<nbSource; i++) |
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| 360 | { |
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| 361 | MPI_Irecv(&sourceMessageSize[i],1,MPI_INT, sourceRank[i], 0, communicator, &request[indexRequest]); |
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| 362 | indexRequest++; |
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| 363 | } |
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| 364 | |
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| 365 | for(int i=0; i<nbTarget; i++) |
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| 366 | { |
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| 367 | MPI_Isend(&targetMessageSize[i],1, MPI_INT, targetRank[i], 0, communicator, &request[indexRequest]); |
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| 368 | indexRequest++; |
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| 369 | } |
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| 370 | |
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| 371 | MPI_Waitall(indexRequest,request,status); |
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| 372 | |
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| 373 | MPI_Barrier(communicator); |
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| 374 | CTimer::get("CMPIRouting::transferToTarget(messageSize)").suspend(); |
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| 375 | CTimer::get("CMPIRouting::transferToTarget(messageSize)").print(); |
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| 376 | |
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| 377 | for(int i=0; i<nbTarget; i++) |
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| 378 | { |
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| 379 | targetBuffer[i] = new char[targetMessageSize[i]]; |
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| 380 | indexTargetBuffer[i] = 0; |
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| 381 | } |
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| 382 | |
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| 383 | char** sourceBuffer = new char*[nbSource]; |
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| 384 | int* indexSourceBuffer = new int[nbSource]; |
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| 385 | |
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| 386 | for(int i=0;i<nbSource; i++) |
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| 387 | { |
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| 388 | sourceBuffer[i] = new char[sourceMessageSize[i]]; |
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| 389 | indexSourceBuffer[i]= 0; |
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| 390 | } |
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| 391 | |
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| 392 | // pack the data |
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| 393 | for(int i=0; i<totalTargetElement; i++) |
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| 394 | { |
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| 395 | index=targetElementIndex[i]; |
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| 396 | pack(targetElements[i], targetBuffer[index], indexTargetBuffer[index] ); |
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| 397 | } |
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| 398 | |
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| 399 | indexRequest=0; |
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| 400 | |
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| 401 | MPI_Barrier(communicator); |
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| 402 | CTimer::get("CMPIRouting::transferToTarget(data)").reset(); |
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| 403 | CTimer::get("CMPIRouting::transferToTarget(data)").resume(); |
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| 404 | for(int i=0; i<nbSource; i++) |
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| 405 | { |
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| 406 | MPI_Irecv(sourceBuffer[i],sourceMessageSize[i],MPI_CHAR, sourceRank[i], 0, communicator, &request[indexRequest]); |
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| 407 | indexRequest++; |
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| 408 | } |
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| 409 | |
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| 410 | for(int i=0;i<nbTarget; i++) |
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| 411 | { |
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| 412 | MPI_Isend(targetBuffer[i],targetMessageSize[i], MPI_CHAR, targetRank[i], 0, communicator, &request[indexRequest]); |
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| 413 | indexRequest++; |
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| 414 | } |
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| 415 | |
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| 416 | MPI_Waitall(indexRequest,request,status); |
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| 417 | |
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| 418 | MPI_Barrier(communicator); |
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| 419 | CTimer::get("CMPIRouting::transferToTarget(data)").suspend(); |
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| 420 | CTimer::get("CMPIRouting::transferToTarget(data)").print(); |
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| 421 | |
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| 422 | // unpack the data |
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| 423 | for(int i=0; i<totalSourceElement; i++) |
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| 424 | { |
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| 425 | index=sourceElementIndex[i]; |
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| 426 | unpack(sourceElements[i], sourceBuffer[index], indexSourceBuffer[index]); |
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| 427 | } |
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| 428 | |
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| 429 | for (int i=0; i<nbTarget; i++) delete[] targetBuffer[i]; |
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| 430 | for (int i=0; i<nbSource; i++) delete[] sourceBuffer[i]; |
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| 431 | delete[] targetBuffer; |
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| 432 | delete[] indexTargetBuffer; |
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| 433 | delete[] targetMessageSize; |
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| 434 | delete[] sourceBuffer; |
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| 435 | delete[] indexSourceBuffer; |
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| 436 | delete[] sourceMessageSize; |
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| 437 | delete[] request; |
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| 438 | delete[] status; |
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| 439 | } |
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| 440 | |
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| 441 | template<typename T> |
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| 442 | void CMPIRouting::transferFromSource(T* targetElements, T* sourceElements) |
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| 443 | { |
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| 444 | char** targetBuffer = new char*[nbTarget]; |
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| 445 | int* indexTargetBuffer = new int[nbTarget]; |
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| 446 | |
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| 447 | for (int i = 0; i < nbTarget; i++) |
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| 448 | { |
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| 449 | targetBuffer[i] = new char[sizeof(T)*nbTargetElement[i]]; |
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| 450 | indexTargetBuffer[i] = 0; |
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| 451 | } |
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| 452 | |
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| 453 | char** sourceBuffer = new char*[nbSource]; |
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| 454 | int* indexSourceBuffer = new int[nbSource]; |
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| 455 | |
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| 456 | for (int i = 0; i < nbSource; i++) |
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| 457 | { |
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| 458 | sourceBuffer[i] = new char[sizeof(T)*nbSourceElement[i]]; |
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| 459 | indexSourceBuffer[i] = 0; |
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| 460 | } |
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| 461 | |
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| 462 | // pack the data |
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| 463 | int index; |
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| 464 | for (int i = 0; i < totalSourceElement; i++) |
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| 465 | { |
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| 466 | index = sourceElementIndex[i]; |
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| 467 | *((T*) &(sourceBuffer[index][indexSourceBuffer[index]])) = sourceElements[i]; |
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| 468 | indexSourceBuffer[index] += sizeof(T); |
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| 469 | } |
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| 470 | |
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| 471 | MPI_Request* request=new MPI_Request[nbSource+nbTarget]; |
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| 472 | MPI_Status* status=new MPI_Status[nbSource+nbTarget]; |
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| 473 | int indexRequest=0; |
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| 474 | |
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| 475 | for(int i=0; i<nbSource; i++) |
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| 476 | { |
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| 477 | MPI_Isend(sourceBuffer[i],nbSourceElement[i]*sizeof(T),MPI_CHAR, sourceRank[i], 0, communicator, &request[indexRequest]); |
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| 478 | indexRequest++; |
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| 479 | } |
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| 480 | |
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| 481 | for(int i=0;i<nbTarget; i++) |
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| 482 | { |
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| 483 | MPI_Irecv(targetBuffer[i],nbTargetElement[i]*sizeof(T), MPI_CHAR, targetRank[i], 0, communicator, &request[indexRequest]); |
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| 484 | indexRequest++; |
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| 485 | } |
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| 486 | |
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| 487 | MPI_Waitall(indexRequest,request,status); |
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| 488 | |
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| 489 | // unpack the data |
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| 490 | for(int i=0;i<totalTargetElement;i++) |
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| 491 | { |
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| 492 | index=targetElementIndex[i]; |
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| 493 | targetElements[i] = *((T*) &(targetBuffer[index][indexTargetBuffer[index]])); |
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| 494 | indexTargetBuffer[index]+=sizeof(T); |
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| 495 | } |
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| 496 | |
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| 497 | for(int i=0;i<nbTarget; i++) delete[] targetBuffer[i]; |
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| 498 | for(int i=0;i<nbSource; i++) delete[] sourceBuffer[i]; |
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| 499 | delete[] targetBuffer; |
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| 500 | delete[] indexTargetBuffer; |
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| 501 | delete[] sourceBuffer; |
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| 502 | delete[] indexSourceBuffer; |
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| 503 | delete[] request; |
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| 504 | delete[] status; |
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| 505 | } |
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| 506 | |
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| 507 | |
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| 508 | /* number of source and target elements is known from previous call to init() */ |
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| 509 | template<typename T, typename t_pack, typename t_unpack> |
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| 510 | void CMPIRouting::transferFromSource(T *targetElements, T *sourceElements, t_pack pack, t_unpack unpack) |
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| 511 | { |
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| 512 | char **targetBuffer = new char*[nbTarget]; |
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| 513 | int *indexTargetBuffer = new int[nbTarget]; |
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| 514 | int *targetMessageSize = new int[nbTarget]; |
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| 515 | int *sourceMessageSize = new int[nbSource]; |
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| 516 | int index; |
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| 517 | |
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| 518 | // compute target buffer size |
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| 519 | for (int i = 0; i < nbSource; i++) sourceMessageSize[i] = 0; |
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| 520 | |
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| 521 | for (int i = 0; i < totalSourceElement; i++) |
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| 522 | { |
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| 523 | index = sourceElementIndex[i]; |
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| 524 | pack(sourceElements[i], NULL, sourceMessageSize[index]); |
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| 525 | } |
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| 526 | |
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| 527 | MPI_Request *request = new MPI_Request[nbSource + nbTarget]; |
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| 528 | MPI_Status *status = new MPI_Status[nbSource + nbTarget]; |
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| 529 | int indexRequest = 0; |
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| 530 | for (int i = 0; i < nbSource; i++) |
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| 531 | { |
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| 532 | MPI_Isend(&sourceMessageSize[i], 1, MPI_INT, sourceRank[i], 0, communicator, &request[indexRequest]); |
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| 533 | indexRequest++; |
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| 534 | } |
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| 535 | for (int i = 0; i < nbTarget; i++) |
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| 536 | { |
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| 537 | MPI_Irecv(&targetMessageSize[i], 1, MPI_INT, targetRank[i], 0, communicator, &request[indexRequest]); |
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| 538 | indexRequest++; |
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| 539 | } |
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| 540 | MPI_Waitall(indexRequest, request, status); |
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| 541 | |
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| 542 | for (int i = 0; i < nbTarget; i++) |
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| 543 | { |
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| 544 | targetBuffer[i] = new char[targetMessageSize[i]]; |
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| 545 | indexTargetBuffer[i] = 0; |
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| 546 | } |
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| 547 | |
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| 548 | char **sourceBuffer = new char*[nbSource]; |
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| 549 | int *indexSourceBuffer = new int[nbSource]; |
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| 550 | |
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| 551 | for (int i = 0; i < nbSource; i++) |
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| 552 | { |
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| 553 | sourceBuffer[i] = new char[sourceMessageSize[i]]; |
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| 554 | indexSourceBuffer[i] = 0; |
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| 555 | } |
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| 556 | |
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| 557 | |
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| 558 | // pack the data |
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| 559 | for (int i = 0; i < totalSourceElement; i++) |
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| 560 | { |
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| 561 | index = sourceElementIndex[i]; |
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| 562 | pack(sourceElements[i], sourceBuffer[index], indexSourceBuffer[index] ); |
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| 563 | } |
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| 564 | |
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| 565 | indexRequest = 0; |
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| 566 | for (int i = 0; i < nbSource; i++) |
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| 567 | { |
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| 568 | MPI_Isend(sourceBuffer[i], sourceMessageSize[i], MPI_CHAR, sourceRank[i], 0, communicator, &request[indexRequest]); |
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| 569 | indexRequest++; |
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| 570 | } |
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| 571 | for (int i = 0; i < nbTarget; i++) |
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| 572 | { |
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| 573 | MPI_Irecv(targetBuffer[i], targetMessageSize[i], MPI_CHAR, targetRank[i], 0, communicator, &request[indexRequest]); |
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| 574 | indexRequest++; |
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| 575 | } |
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| 576 | MPI_Waitall(indexRequest, request, status); |
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| 577 | |
---|
| 578 | // unpack the data |
---|
| 579 | for (int i = 0; i < totalTargetElement; i++) |
---|
| 580 | { |
---|
| 581 | index = targetElementIndex[i]; |
---|
| 582 | unpack(targetElements[i], targetBuffer[index], indexTargetBuffer[index]); |
---|
| 583 | } |
---|
| 584 | |
---|
| 585 | for (int i = 0; i < nbTarget; i++) delete[] targetBuffer[i]; |
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| 586 | for (int i = 0; i < nbSource; i++) delete[] sourceBuffer[i]; |
---|
| 587 | delete[] targetBuffer; |
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| 588 | delete[] indexTargetBuffer; |
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| 589 | delete[] targetMessageSize; |
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| 590 | delete[] sourceBuffer; |
---|
| 591 | delete[] indexSourceBuffer; |
---|
| 592 | delete[] sourceMessageSize; |
---|
| 593 | delete[] request; |
---|
| 594 | delete[] status; |
---|
| 595 | } |
---|
| 596 | |
---|
| 597 | CMPIRouting::~CMPIRouting() |
---|
| 598 | { |
---|
| 599 | }; |
---|
| 600 | |
---|
| 601 | template void CMPIRouting::init(const std::vector<int>& route, CMPICascade *cascade); |
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| 602 | template void CMPIRouting::init(const std::vector<vector<int> >& route, CMPICascade *cascade); |
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| 603 | |
---|
| 604 | template void CMPIRouting::transferToTarget(int *targetElements, int *sourceElements); |
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| 605 | template void CMPIRouting::transferToTarget(int *targetElements, int *sourceElements, void (*pack)(int&, char*, int&), void (* unpack)(int&, char *, int&)); |
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| 606 | template void CMPIRouting::transferFromSource(int *targetElements, int *sourceElements); |
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| 607 | template void CMPIRouting::transferFromSource(int *targetElements, int *sourceElements, void (*pack)(int&, char*, int&), void (* unpack)(int&, char *, int&)); |
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| 608 | |
---|
| 609 | template void CMPIRouting::transferToTarget(Node* targetElements, Node* sourceElements, void (*pack)(Node&, char*, int&), void (* unpack)(Node&, char *, int&)); |
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| 610 | template void CMPIRouting::transferToTarget(Elt **targetElements, Elt **sourceElements, void (*pack)(Elt *, char*, int&), void (* unpack)(Elt *, char *, int&)); |
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| 611 | template void CMPIRouting::transferFromSource(std::vector<int> *targetElements, std::vector<int> *sourceElements, void (*pack)(const std::vector<int>&, char*, int&), void (* unpack)(std::vector<int>&, const char *, int&)); |
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| 612 | |
---|
| 613 | struct NES { int cnt; int risc; int rank; }; |
---|
| 614 | |
---|
| 615 | template void alltoalls_unknown(const std::vector<std::vector<NES> >& send, std::vector<std::vector<NES> >& recv, |
---|
| 616 | const std::vector<int>& ranks, MPI_Comm communicator); |
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| 617 | |
---|
| 618 | template void alltoalls_known(const std::vector<std::vector<int> >& send, std::vector<std::vector<int> >& recv, |
---|
| 619 | const std::vector<int>& ranks, MPI_Comm communicator); |
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| 620 | |
---|
| 621 | } |
---|