[591] | 1 | #include "xios_spl.hpp" |
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[300] | 2 | #include "context_client.hpp" |
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| 3 | #include "context_server.hpp" |
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| 4 | #include "event_client.hpp" |
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| 5 | #include "buffer_out.hpp" |
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| 6 | #include "buffer_client.hpp" |
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| 7 | #include "type.hpp" |
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| 8 | #include "event_client.hpp" |
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| 9 | #include "context.hpp" |
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[382] | 10 | #include "mpi.hpp" |
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[347] | 11 | #include "timer.hpp" |
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[401] | 12 | #include "cxios.hpp" |
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[1130] | 13 | #include "server.hpp" |
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[300] | 14 | |
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[335] | 15 | namespace xios |
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[300] | 16 | { |
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[512] | 17 | /*! |
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| 18 | \param [in] parent Pointer to context on client side |
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| 19 | \param [in] intraComm_ communicator of group client |
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| 20 | \param [in] interComm_ communicator of group server |
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[983] | 21 | \cxtSer [in] cxtSer Pointer to context of server side. (It is only used in case of attached mode). |
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[512] | 22 | */ |
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[1639] | 23 | CContextClient::CContextClient(CContext* parent, MPI_Comm intraComm_, MPI_Comm interComm_, CContext* cxtSer) |
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[917] | 24 | : mapBufferSize_(), parentServer(cxtSer), maxBufferedEvents(4) |
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[300] | 25 | { |
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[595] | 26 | context = parent; |
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| 27 | intraComm = intraComm_; |
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| 28 | interComm = interComm_; |
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[1639] | 29 | MPI_Comm_rank(intraComm, &clientRank); |
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| 30 | MPI_Comm_size(intraComm, &clientSize); |
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[509] | 31 | |
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[595] | 32 | int flag; |
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[1639] | 33 | MPI_Comm_test_inter(interComm, &flag); |
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| 34 | if (flag) MPI_Comm_remote_size(interComm, &serverSize); |
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| 35 | else MPI_Comm_size(interComm, &serverSize); |
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[509] | 36 | |
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[1232] | 37 | computeLeader(clientRank, clientSize, serverSize, ranksServerLeader, ranksServerNotLeader); |
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| 38 | |
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| 39 | timeLine = 0; |
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| 40 | } |
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| 41 | |
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| 42 | void CContextClient::computeLeader(int clientRank, int clientSize, int serverSize, |
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| 43 | std::list<int>& rankRecvLeader, |
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| 44 | std::list<int>& rankRecvNotLeader) |
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| 45 | { |
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| 46 | if ((0 == clientSize) || (0 == serverSize)) return; |
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| 47 | |
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[595] | 48 | if (clientSize < serverSize) |
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| 49 | { |
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| 50 | int serverByClient = serverSize / clientSize; |
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| 51 | int remain = serverSize % clientSize; |
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| 52 | int rankStart = serverByClient * clientRank; |
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[300] | 53 | |
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[595] | 54 | if (clientRank < remain) |
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| 55 | { |
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| 56 | serverByClient++; |
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| 57 | rankStart += clientRank; |
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| 58 | } |
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| 59 | else |
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| 60 | rankStart += remain; |
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| 61 | |
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| 62 | for (int i = 0; i < serverByClient; i++) |
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[1232] | 63 | rankRecvLeader.push_back(rankStart + i); |
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[1021] | 64 | |
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[1232] | 65 | rankRecvNotLeader.resize(0); |
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[1158] | 66 | } |
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[595] | 67 | else |
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| 68 | { |
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| 69 | int clientByServer = clientSize / serverSize; |
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| 70 | int remain = clientSize % serverSize; |
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| 71 | |
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| 72 | if (clientRank < (clientByServer + 1) * remain) |
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| 73 | { |
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| 74 | if (clientRank % (clientByServer + 1) == 0) |
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[1232] | 75 | rankRecvLeader.push_back(clientRank / (clientByServer + 1)); |
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[1021] | 76 | else |
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[1232] | 77 | rankRecvNotLeader.push_back(clientRank / (clientByServer + 1)); |
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[595] | 78 | } |
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| 79 | else |
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| 80 | { |
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| 81 | int rank = clientRank - (clientByServer + 1) * remain; |
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| 82 | if (rank % clientByServer == 0) |
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[1232] | 83 | rankRecvLeader.push_back(remain + rank / clientByServer); |
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[1021] | 84 | else |
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[1232] | 85 | rankRecvNotLeader.push_back(remain + rank / clientByServer); |
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[595] | 86 | } |
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| 87 | } |
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[300] | 88 | } |
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| 89 | |
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[512] | 90 | /*! |
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| 91 | In case of attached mode, the current context must be reset to context for client |
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| 92 | \param [in] event Event sent to server |
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| 93 | */ |
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[300] | 94 | void CContextClient::sendEvent(CEventClient& event) |
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| 95 | { |
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[731] | 96 | list<int> ranks = event.getRanks(); |
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[1615] | 97 | info(100)<<"Event "<<timeLine<<" of context "<<context->getId()<<endl ; |
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[1377] | 98 | if (CXios::checkEventSync) |
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| 99 | { |
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[2078] | 100 | int typeId, classId, typeId_in, classId_in ; |
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| 101 | size_t timeLine_out; |
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[1377] | 102 | typeId_in=event.getTypeId() ; |
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| 103 | classId_in=event.getClassId() ; |
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[1475] | 104 | // MPI_Allreduce(&timeLine,&timeLine_out, 1, MPI_UINT64_T, MPI_SUM, intraComm) ; // MPI_UINT64_T standardized by MPI 3 |
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[2078] | 105 | MPI_Allreduce(&timeLine,&timeLine_out, 1, MPI_UNSIGNED_LONG_LONG, MPI_SUM, intraComm) ; |
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[1639] | 106 | MPI_Allreduce(&typeId_in,&typeId, 1, MPI_INT, MPI_SUM, intraComm) ; |
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| 107 | MPI_Allreduce(&classId_in,&classId, 1, MPI_INT, MPI_SUM, intraComm) ; |
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[1377] | 108 | if (typeId/clientSize!=event.getTypeId() || classId/clientSize!=event.getClassId() || timeLine_out/clientSize!=timeLine) |
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| 109 | { |
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| 110 | ERROR("void CContextClient::sendEvent(CEventClient& event)", |
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| 111 | << "Event are not coherent between client."); |
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| 112 | } |
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| 113 | } |
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| 114 | |
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[595] | 115 | if (!event.isEmpty()) |
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[300] | 116 | { |
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[731] | 117 | list<int> sizes = event.getSizes(); |
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[300] | 118 | |
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[1130] | 119 | // We force the getBuffers call to be non-blocking on classical servers |
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[1054] | 120 | list<CBufferOut*> buffList; |
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[1130] | 121 | bool couldBuffer = getBuffers(ranks, sizes, buffList, (!CXios::isClient && (CServer::serverLevel == 0) )); |
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[1184] | 122 | // bool couldBuffer = getBuffers(ranks, sizes, buffList, CXios::isServer ); |
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[509] | 123 | |
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[1054] | 124 | if (couldBuffer) |
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| 125 | { |
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| 126 | event.send(timeLine, sizes, buffList); |
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[1615] | 127 | info(100)<<"Event "<<timeLine<<" of context "<<context->getId()<<" sent"<<endl ; |
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[731] | 128 | |
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[1054] | 129 | checkBuffers(ranks); |
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| 130 | |
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| 131 | if (isAttachedModeEnabled()) // couldBuffer is always true in attached mode |
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| 132 | { |
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| 133 | waitEvent(ranks); |
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| 134 | CContext::setCurrent(context->getId()); |
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| 135 | } |
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| 136 | } |
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| 137 | else |
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| 138 | { |
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| 139 | tmpBufferedEvent.ranks = ranks; |
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| 140 | tmpBufferedEvent.sizes = sizes; |
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| 141 | |
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| 142 | for (list<int>::const_iterator it = sizes.begin(); it != sizes.end(); it++) |
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| 143 | tmpBufferedEvent.buffers.push_back(new CBufferOut(*it)); |
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[1377] | 144 | info(100)<<"DEBUG : temporaly event created : timeline "<<timeLine<<endl ; |
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[1054] | 145 | event.send(timeLine, tmpBufferedEvent.sizes, tmpBufferedEvent.buffers); |
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[1615] | 146 | info(100)<<"Event "<<timeLine<<" of context "<<context->getId()<<" sent"<<endl ; |
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[1054] | 147 | } |
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[300] | 148 | } |
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| 149 | |
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[1054] | 150 | timeLine++; |
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| 151 | } |
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| 152 | |
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| 153 | /*! |
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| 154 | * Send the temporarily buffered event (if any). |
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| 155 | * |
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[1158] | 156 | * \return true if a temporarily buffered event could be sent, false otherwise |
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[1054] | 157 | */ |
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| 158 | bool CContextClient::sendTemporarilyBufferedEvent() |
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| 159 | { |
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| 160 | bool couldSendTmpBufferedEvent = false; |
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| 161 | |
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| 162 | if (hasTemporarilyBufferedEvent()) |
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[511] | 163 | { |
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[1054] | 164 | list<CBufferOut*> buffList; |
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| 165 | if (getBuffers(tmpBufferedEvent.ranks, tmpBufferedEvent.sizes, buffList, true)) // Non-blocking call |
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| 166 | { |
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| 167 | list<CBufferOut*>::iterator it, itBuffer; |
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| 168 | |
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| 169 | for (it = tmpBufferedEvent.buffers.begin(), itBuffer = buffList.begin(); it != tmpBufferedEvent.buffers.end(); it++, itBuffer++) |
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| 170 | (*itBuffer)->put((char*)(*it)->start(), (*it)->count()); |
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| 171 | |
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[1377] | 172 | info(100)<<"DEBUG : temporaly event sent "<<endl ; |
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[1054] | 173 | checkBuffers(tmpBufferedEvent.ranks); |
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| 174 | |
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| 175 | tmpBufferedEvent.clear(); |
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| 176 | |
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| 177 | couldSendTmpBufferedEvent = true; |
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| 178 | } |
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[511] | 179 | } |
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| 180 | |
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[1054] | 181 | return couldSendTmpBufferedEvent; |
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[300] | 182 | } |
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[509] | 183 | |
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[512] | 184 | /*! |
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| 185 | If client is also server (attached mode), after sending event, it should process right away |
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| 186 | the incoming event. |
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| 187 | \param [in] ranks list rank of server connected this client |
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| 188 | */ |
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[300] | 189 | void CContextClient::waitEvent(list<int>& ranks) |
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| 190 | { |
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[595] | 191 | parentServer->server->setPendingEvent(); |
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| 192 | while (checkBuffers(ranks)) |
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[300] | 193 | { |
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[595] | 194 | parentServer->server->listen(); |
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| 195 | parentServer->server->checkPendingRequest(); |
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[300] | 196 | } |
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[386] | 197 | |
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[595] | 198 | while (parentServer->server->hasPendingEvent()) |
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[386] | 199 | { |
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[595] | 200 | parentServer->server->eventLoop(); |
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[386] | 201 | } |
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[300] | 202 | } |
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| 203 | |
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[512] | 204 | /*! |
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[1054] | 205 | * Get buffers for each connection to the servers. This function blocks until there is enough room in the buffers unless |
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| 206 | * it is explicitly requested to be non-blocking. |
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| 207 | * |
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| 208 | * \param [in] serverList list of rank of connected server |
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| 209 | * \param [in] sizeList size of message corresponding to each connection |
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| 210 | * \param [out] retBuffers list of buffers that can be used to store an event |
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| 211 | * \param [in] nonBlocking whether this function should be non-blocking |
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| 212 | * \return whether the already allocated buffers could be used |
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[512] | 213 | */ |
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[1071] | 214 | bool CContextClient::getBuffers(const list<int>& serverList, const list<int>& sizeList, list<CBufferOut*>& retBuffers, |
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| 215 | bool nonBlocking /*= false*/) |
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[300] | 216 | { |
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[1054] | 217 | list<int>::const_iterator itServer, itSize; |
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[595] | 218 | list<CClientBuffer*> bufferList; |
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[1054] | 219 | map<int,CClientBuffer*>::const_iterator it; |
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[595] | 220 | list<CClientBuffer*>::iterator itBuffer; |
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[884] | 221 | bool areBuffersFree; |
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[300] | 222 | |
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[595] | 223 | for (itServer = serverList.begin(); itServer != serverList.end(); itServer++) |
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[300] | 224 | { |
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[595] | 225 | it = buffers.find(*itServer); |
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| 226 | if (it == buffers.end()) |
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[300] | 227 | { |
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[595] | 228 | newBuffer(*itServer); |
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| 229 | it = buffers.find(*itServer); |
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[509] | 230 | } |
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[595] | 231 | bufferList.push_back(it->second); |
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[300] | 232 | } |
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[347] | 233 | |
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| 234 | CTimer::get("Blocking time").resume(); |
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[884] | 235 | do |
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[300] | 236 | { |
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[884] | 237 | areBuffersFree = true; |
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[595] | 238 | for (itBuffer = bufferList.begin(), itSize = sizeList.begin(); itBuffer != bufferList.end(); itBuffer++, itSize++) |
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[884] | 239 | areBuffersFree &= (*itBuffer)->isBufferFree(*itSize); |
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| 240 | |
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| 241 | if (!areBuffersFree) |
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[300] | 242 | { |
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[884] | 243 | checkBuffers(); |
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[1130] | 244 | if (CServer::serverLevel == 0) |
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| 245 | context->server->listen(); |
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[1071] | 246 | |
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[1130] | 247 | else if (CServer::serverLevel == 1) |
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| 248 | { |
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| 249 | context->server->listen(); |
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| 250 | for (int i = 0; i < context->serverPrimServer.size(); ++i) |
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| 251 | context->serverPrimServer[i]->listen(); |
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[1378] | 252 | CServer::contextEventLoop(false) ; // avoid dead-lock at finalize... |
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[1130] | 253 | } |
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| 254 | |
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| 255 | else if (CServer::serverLevel == 2) |
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| 256 | context->server->listen(); |
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| 257 | |
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[300] | 258 | } |
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[1054] | 259 | } while (!areBuffersFree && !nonBlocking); |
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[1130] | 260 | |
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[347] | 261 | CTimer::get("Blocking time").suspend(); |
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| 262 | |
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[1054] | 263 | if (areBuffersFree) |
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[300] | 264 | { |
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[1054] | 265 | for (itBuffer = bufferList.begin(), itSize = sizeList.begin(); itBuffer != bufferList.end(); itBuffer++, itSize++) |
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| 266 | retBuffers.push_back((*itBuffer)->getBuffer(*itSize)); |
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[300] | 267 | } |
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[1054] | 268 | |
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| 269 | return areBuffersFree; |
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[300] | 270 | } |
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[509] | 271 | |
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[512] | 272 | /*! |
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| 273 | Make a new buffer for a certain connection to server with specific rank |
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| 274 | \param [in] rank rank of connected server |
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| 275 | */ |
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[300] | 276 | void CContextClient::newBuffer(int rank) |
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| 277 | { |
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[1201] | 278 | if (!mapBufferSize_.count(rank)) |
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| 279 | { |
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| 280 | error(0) << "WARNING: Unexpected request for buffer to communicate with server " << rank << std::endl; |
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| 281 | mapBufferSize_[rank] = CXios::minBufferSize; |
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| 282 | maxEventSizes[rank] = CXios::minBufferSize; |
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| 283 | } |
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| 284 | CClientBuffer* buffer = buffers[rank] = new CClientBuffer(interComm, rank, mapBufferSize_[rank], maxEventSizes[rank], maxBufferedEvents); |
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| 285 | // Notify the server |
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| 286 | CBufferOut* bufOut = buffer->getBuffer(sizeof(StdSize)); |
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| 287 | bufOut->put(mapBufferSize_[rank]); // Stupid C++ |
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| 288 | buffer->checkBuffer(); |
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[509] | 289 | } |
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[300] | 290 | |
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[512] | 291 | /*! |
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| 292 | Verify state of buffers. Buffer is under pending state if there is no message on it |
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| 293 | \return state of buffers, pending(true), ready(false) |
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| 294 | */ |
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[300] | 295 | bool CContextClient::checkBuffers(void) |
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| 296 | { |
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[595] | 297 | map<int,CClientBuffer*>::iterator itBuff; |
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| 298 | bool pending = false; |
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[1130] | 299 | for (itBuff = buffers.begin(); itBuff != buffers.end(); itBuff++) |
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| 300 | pending |= itBuff->second->checkBuffer(); |
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[595] | 301 | return pending; |
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[509] | 302 | } |
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[300] | 303 | |
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[512] | 304 | //! Release all buffers |
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[1071] | 305 | void CContextClient::releaseBuffers() |
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[300] | 306 | { |
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[595] | 307 | map<int,CClientBuffer*>::iterator itBuff; |
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[1077] | 308 | for (itBuff = buffers.begin(); itBuff != buffers.end(); itBuff++) |
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[1139] | 309 | { |
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[1077] | 310 | delete itBuff->second; |
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[1139] | 311 | } |
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[1077] | 312 | buffers.clear(); |
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[509] | 313 | } |
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[300] | 314 | |
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[512] | 315 | /*! |
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| 316 | Verify state of buffers corresponding to a connection |
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| 317 | \param [in] ranks list rank of server to which client connects to |
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| 318 | \return state of buffers, pending(true), ready(false) |
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| 319 | */ |
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[300] | 320 | bool CContextClient::checkBuffers(list<int>& ranks) |
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| 321 | { |
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[595] | 322 | list<int>::iterator it; |
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| 323 | bool pending = false; |
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| 324 | for (it = ranks.begin(); it != ranks.end(); it++) pending |= buffers[*it]->checkBuffer(); |
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| 325 | return pending; |
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[509] | 326 | } |
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[300] | 327 | |
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[512] | 328 | /*! |
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[917] | 329 | * Set the buffer size for each connection. Warning: This function is collective. |
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| 330 | * |
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| 331 | * \param [in] mapSize maps the rank of the connected servers to the size of the correspoinding buffer |
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| 332 | * \param [in] maxEventSize maps the rank of the connected servers to the size of the biggest event |
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[512] | 333 | */ |
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[917] | 334 | void CContextClient::setBufferSize(const std::map<int,StdSize>& mapSize, const std::map<int,StdSize>& maxEventSize) |
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[509] | 335 | { |
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| 336 | mapBufferSize_ = mapSize; |
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[1201] | 337 | maxEventSizes = maxEventSize; |
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[917] | 338 | |
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| 339 | // Compute the maximum number of events that can be safely buffered. |
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| 340 | double minBufferSizeEventSizeRatio = std::numeric_limits<double>::max(); |
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| 341 | for (std::map<int,StdSize>::const_iterator it = mapSize.begin(), ite = mapSize.end(); it != ite; ++it) |
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| 342 | { |
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[1474] | 343 | double ratio = double(it->second) / maxEventSizes[it->first]; |
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[917] | 344 | if (ratio < minBufferSizeEventSizeRatio) minBufferSizeEventSizeRatio = ratio; |
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| 345 | } |
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[1639] | 346 | MPI_Allreduce(MPI_IN_PLACE, &minBufferSizeEventSizeRatio, 1, MPI_DOUBLE, MPI_MIN, intraComm); |
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[917] | 347 | |
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| 348 | if (minBufferSizeEventSizeRatio < 1.0) |
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[1201] | 349 | { |
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[917] | 350 | ERROR("void CContextClient::setBufferSize(const std::map<int,StdSize>& mapSize, const std::map<int,StdSize>& maxEventSize)", |
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| 351 | << "The buffer sizes and the maximum events sizes are incoherent."); |
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[1201] | 352 | } |
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| 353 | else if (minBufferSizeEventSizeRatio == std::numeric_limits<double>::max()) |
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| 354 | minBufferSizeEventSizeRatio = 1.0; // In this case, maxBufferedEvents will never be used but we want to avoid any floating point exception |
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[917] | 355 | |
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| 356 | maxBufferedEvents = size_t(2 * minBufferSizeEventSizeRatio) // there is room for two local buffers on the server |
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| 357 | + size_t(minBufferSizeEventSizeRatio) // one local buffer can always be fully used |
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| 358 | + 1; // the other local buffer might contain only one event |
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[509] | 359 | } |
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| 360 | |
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[1158] | 361 | /*! |
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| 362 | Get leading server in the group of connected server |
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| 363 | \return ranks of leading servers |
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| 364 | */ |
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| 365 | const std::list<int>& CContextClient::getRanksServerNotLeader(void) const |
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| 366 | { |
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| 367 | return ranksServerNotLeader; |
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| 368 | } |
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[1021] | 369 | |
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[1158] | 370 | /*! |
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| 371 | Check if client connects to leading server |
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| 372 | \return connected(true), not connected (false) |
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| 373 | */ |
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| 374 | bool CContextClient::isServerNotLeader(void) const |
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| 375 | { |
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| 376 | return !ranksServerNotLeader.empty(); |
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| 377 | } |
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[1021] | 378 | |
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[595] | 379 | /*! |
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| 380 | Get leading server in the group of connected server |
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| 381 | \return ranks of leading servers |
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| 382 | */ |
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| 383 | const std::list<int>& CContextClient::getRanksServerLeader(void) const |
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| 384 | { |
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| 385 | return ranksServerLeader; |
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| 386 | } |
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[509] | 387 | |
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[595] | 388 | /*! |
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| 389 | Check if client connects to leading server |
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| 390 | \return connected(true), not connected (false) |
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| 391 | */ |
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| 392 | bool CContextClient::isServerLeader(void) const |
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| 393 | { |
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| 394 | return !ranksServerLeader.empty(); |
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| 395 | } |
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[300] | 396 | |
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[704] | 397 | /*! |
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| 398 | * Check if the attached mode is used. |
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| 399 | * |
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| 400 | * \return true if and only if attached mode is used |
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| 401 | */ |
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| 402 | bool CContextClient::isAttachedModeEnabled() const |
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| 403 | { |
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| 404 | return (parentServer != 0); |
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| 405 | } |
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[697] | 406 | |
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[512] | 407 | /*! |
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[1130] | 408 | * Finalize context client and do some reports. Function is non-blocking. |
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[512] | 409 | */ |
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[1130] | 410 | void CContextClient::finalize(void) |
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[1054] | 411 | { |
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| 412 | map<int,CClientBuffer*>::iterator itBuff; |
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| 413 | bool stop = false; |
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[731] | 414 | |
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[1054] | 415 | CTimer::get("Blocking time").resume(); |
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| 416 | while (hasTemporarilyBufferedEvent()) |
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| 417 | { |
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| 418 | checkBuffers(); |
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| 419 | sendTemporarilyBufferedEvent(); |
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| 420 | } |
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| 421 | CTimer::get("Blocking time").suspend(); |
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[509] | 422 | |
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[1054] | 423 | CEventClient event(CContext::GetType(), CContext::EVENT_ID_CONTEXT_FINALIZE); |
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| 424 | if (isServerLeader()) |
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| 425 | { |
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| 426 | CMessage msg; |
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| 427 | const std::list<int>& ranks = getRanksServerLeader(); |
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| 428 | for (std::list<int>::const_iterator itRank = ranks.begin(), itRankEnd = ranks.end(); itRank != itRankEnd; ++itRank) |
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[1377] | 429 | { |
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| 430 | info(100)<<"DEBUG : Sent context Finalize event to rank "<<*itRank<<endl ; |
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[1054] | 431 | event.push(*itRank, 1, msg); |
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[1377] | 432 | } |
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[1054] | 433 | sendEvent(event); |
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| 434 | } |
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| 435 | else sendEvent(event); |
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[509] | 436 | |
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[1054] | 437 | CTimer::get("Blocking time").resume(); |
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[1130] | 438 | // while (!stop) |
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[1054] | 439 | { |
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| 440 | checkBuffers(); |
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| 441 | if (hasTemporarilyBufferedEvent()) |
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| 442 | sendTemporarilyBufferedEvent(); |
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[511] | 443 | |
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[1054] | 444 | stop = true; |
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[1130] | 445 | // for (itBuff = buffers.begin(); itBuff != buffers.end(); itBuff++) stop &= !itBuff->second->hasPendingRequest(); |
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[1054] | 446 | } |
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| 447 | CTimer::get("Blocking time").suspend(); |
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| 448 | |
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| 449 | std::map<int,StdSize>::const_iterator itbMap = mapBufferSize_.begin(), |
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| 450 | iteMap = mapBufferSize_.end(), itMap; |
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[1071] | 451 | |
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[1054] | 452 | StdSize totalBuf = 0; |
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| 453 | for (itMap = itbMap; itMap != iteMap; ++itMap) |
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| 454 | { |
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| 455 | report(10) << " Memory report : Context <" << context->getId() << "> : client side : memory used for buffer of each connection to server" << endl |
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| 456 | << " +) To server with rank " << itMap->first << " : " << itMap->second << " bytes " << endl; |
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| 457 | totalBuf += itMap->second; |
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| 458 | } |
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| 459 | report(0) << " Memory report : Context <" << context->getId() << "> : client side : total memory used for buffer " << totalBuf << " bytes" << endl; |
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| 460 | |
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[1130] | 461 | //releaseBuffers(); // moved to CContext::finalize() |
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[1054] | 462 | } |
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[1130] | 463 | |
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[1139] | 464 | |
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| 465 | /*! |
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| 466 | */ |
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[1130] | 467 | bool CContextClient::havePendingRequests(void) |
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| 468 | { |
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| 469 | bool pending = false; |
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| 470 | map<int,CClientBuffer*>::iterator itBuff; |
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| 471 | for (itBuff = buffers.begin(); itBuff != buffers.end(); itBuff++) |
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| 472 | pending |= itBuff->second->hasPendingRequest(); |
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| 473 | return pending; |
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| 474 | } |
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| 475 | |
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| 476 | |
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[509] | 477 | } |
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