[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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[300] | 13 | |
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[335] | 14 | namespace xios |
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[300] | 15 | { |
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[512] | 16 | /*! |
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| 17 | \param [in] parent Pointer to context on client side |
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| 18 | \param [in] intraComm_ communicator of group client |
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| 19 | \param [in] interComm_ communicator of group server |
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[983] | 20 | \cxtSer [in] cxtSer Pointer to context of server side. (It is only used in case of attached mode). |
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[512] | 21 | */ |
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[595] | 22 | CContextClient::CContextClient(CContext* parent, MPI_Comm intraComm_, MPI_Comm interComm_, CContext* cxtSer) |
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[917] | 23 | : mapBufferSize_(), parentServer(cxtSer), maxBufferedEvents(4) |
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[300] | 24 | { |
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[595] | 25 | context = parent; |
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| 26 | intraComm = intraComm_; |
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| 27 | interComm = interComm_; |
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| 28 | MPI_Comm_rank(intraComm, &clientRank); |
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| 29 | MPI_Comm_size(intraComm, &clientSize); |
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[509] | 30 | |
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[595] | 31 | int flag; |
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| 32 | MPI_Comm_test_inter(interComm, &flag); |
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| 33 | if (flag) MPI_Comm_remote_size(interComm, &serverSize); |
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| 34 | else MPI_Comm_size(interComm, &serverSize); |
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[509] | 35 | |
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[595] | 36 | if (clientSize < serverSize) |
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| 37 | { |
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| 38 | int serverByClient = serverSize / clientSize; |
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| 39 | int remain = serverSize % clientSize; |
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| 40 | int rankStart = serverByClient * clientRank; |
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[300] | 41 | |
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[595] | 42 | if (clientRank < remain) |
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| 43 | { |
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| 44 | serverByClient++; |
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| 45 | rankStart += clientRank; |
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| 46 | } |
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| 47 | else |
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| 48 | rankStart += remain; |
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| 49 | |
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| 50 | for (int i = 0; i < serverByClient; i++) |
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| 51 | ranksServerLeader.push_back(rankStart + i); |
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[1021] | 52 | |
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| 53 | ranksServerNotLeader.resize(0); } |
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[595] | 54 | else |
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| 55 | { |
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| 56 | int clientByServer = clientSize / serverSize; |
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| 57 | int remain = clientSize % serverSize; |
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| 58 | |
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| 59 | if (clientRank < (clientByServer + 1) * remain) |
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| 60 | { |
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| 61 | if (clientRank % (clientByServer + 1) == 0) |
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| 62 | ranksServerLeader.push_back(clientRank / (clientByServer + 1)); |
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[1021] | 63 | else |
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| 64 | ranksServerNotLeader.push_back(clientRank / (clientByServer + 1)); |
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[595] | 65 | } |
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| 66 | else |
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| 67 | { |
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| 68 | int rank = clientRank - (clientByServer + 1) * remain; |
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| 69 | if (rank % clientByServer == 0) |
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| 70 | ranksServerLeader.push_back(remain + rank / clientByServer); |
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[1021] | 71 | else |
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| 72 | ranksServerNotLeader.push_back(remain + rank / clientByServer); |
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[595] | 73 | } |
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| 74 | } |
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| 75 | |
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| 76 | timeLine = 0; |
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[300] | 77 | } |
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| 78 | |
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[512] | 79 | /*! |
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| 80 | In case of attached mode, the current context must be reset to context for client |
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| 81 | \param [in] event Event sent to server |
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| 82 | */ |
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[300] | 83 | void CContextClient::sendEvent(CEventClient& event) |
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| 84 | { |
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[731] | 85 | list<int> ranks = event.getRanks(); |
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[595] | 86 | if (!event.isEmpty()) |
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[300] | 87 | { |
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[731] | 88 | list<int> sizes = event.getSizes(); |
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[300] | 89 | |
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[595] | 90 | list<CBufferOut*> buffList = getBuffers(ranks, sizes); |
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[509] | 91 | |
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[731] | 92 | event.send(timeLine, sizes, buffList); |
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| 93 | |
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[595] | 94 | checkBuffers(ranks); |
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[300] | 95 | } |
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| 96 | |
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[704] | 97 | if (isAttachedModeEnabled()) |
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[511] | 98 | { |
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| 99 | waitEvent(ranks); |
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| 100 | CContext::setCurrent(context->getId()); |
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| 101 | } |
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| 102 | |
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[595] | 103 | timeLine++; |
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[300] | 104 | } |
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[509] | 105 | |
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[512] | 106 | /*! |
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| 107 | If client is also server (attached mode), after sending event, it should process right away |
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| 108 | the incoming event. |
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| 109 | \param [in] ranks list rank of server connected this client |
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| 110 | */ |
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[300] | 111 | void CContextClient::waitEvent(list<int>& ranks) |
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| 112 | { |
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[595] | 113 | parentServer->server->setPendingEvent(); |
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| 114 | while (checkBuffers(ranks)) |
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[300] | 115 | { |
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[595] | 116 | parentServer->server->listen(); |
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| 117 | parentServer->server->checkPendingRequest(); |
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[300] | 118 | } |
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[386] | 119 | |
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[595] | 120 | while (parentServer->server->hasPendingEvent()) |
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[386] | 121 | { |
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[595] | 122 | parentServer->server->eventLoop(); |
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[386] | 123 | } |
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[300] | 124 | } |
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| 125 | |
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[512] | 126 | /*! |
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| 127 | Setup buffer for each connection to server and verify their state to put content into them |
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| 128 | \param [in] serverList list of rank of connected server |
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| 129 | \param [in] sizeList size of message corresponding to each connection |
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| 130 | \return List of buffer input which event can be placed |
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| 131 | */ |
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[300] | 132 | list<CBufferOut*> CContextClient::getBuffers(list<int>& serverList, list<int>& sizeList) |
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| 133 | { |
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[595] | 134 | list<int>::iterator itServer, itSize; |
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| 135 | list<CClientBuffer*> bufferList; |
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| 136 | map<int,CClientBuffer*>::iterator it; |
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| 137 | list<CClientBuffer*>::iterator itBuffer; |
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| 138 | list<CBufferOut*> retBuffer; |
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[884] | 139 | bool areBuffersFree; |
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[300] | 140 | |
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[595] | 141 | for (itServer = serverList.begin(); itServer != serverList.end(); itServer++) |
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[300] | 142 | { |
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[595] | 143 | it = buffers.find(*itServer); |
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| 144 | if (it == buffers.end()) |
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[300] | 145 | { |
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[595] | 146 | newBuffer(*itServer); |
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| 147 | it = buffers.find(*itServer); |
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[509] | 148 | } |
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[595] | 149 | bufferList.push_back(it->second); |
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[300] | 150 | } |
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[347] | 151 | |
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| 152 | CTimer::get("Blocking time").resume(); |
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[884] | 153 | do |
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[300] | 154 | { |
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[884] | 155 | areBuffersFree = true; |
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[595] | 156 | for (itBuffer = bufferList.begin(), itSize = sizeList.begin(); itBuffer != bufferList.end(); itBuffer++, itSize++) |
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[884] | 157 | areBuffersFree &= (*itBuffer)->isBufferFree(*itSize); |
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| 158 | |
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| 159 | if (!areBuffersFree) |
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[300] | 160 | { |
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[884] | 161 | checkBuffers(); |
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| 162 | context->server->listen(); |
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[300] | 163 | } |
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[884] | 164 | } while (!areBuffersFree); |
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[347] | 165 | CTimer::get("Blocking time").suspend(); |
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| 166 | |
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[595] | 167 | for (itBuffer = bufferList.begin(), itSize = sizeList.begin(); itBuffer != bufferList.end(); itBuffer++, itSize++) |
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[300] | 168 | { |
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[595] | 169 | retBuffer.push_back((*itBuffer)->getBuffer(*itSize)); |
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[300] | 170 | } |
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[595] | 171 | return retBuffer; |
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[300] | 172 | } |
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[509] | 173 | |
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[512] | 174 | /*! |
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| 175 | Make a new buffer for a certain connection to server with specific rank |
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| 176 | \param [in] rank rank of connected server |
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| 177 | */ |
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[300] | 178 | void CContextClient::newBuffer(int rank) |
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| 179 | { |
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[724] | 180 | if (!mapBufferSize_.count(rank)) |
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| 181 | { |
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| 182 | error(0) << "WARNING: Unexpected request for buffer to communicate with server " << rank << std::endl; |
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| 183 | mapBufferSize_[rank] = CXios::minBufferSize; |
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| 184 | } |
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[917] | 185 | CClientBuffer* buffer = buffers[rank] = new CClientBuffer(interComm, rank, mapBufferSize_[rank], maxBufferedEvents); |
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[725] | 186 | // Notify the server |
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| 187 | CBufferOut* bufOut = buffer->getBuffer(sizeof(StdSize)); |
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| 188 | bufOut->put(mapBufferSize_[rank]); // Stupid C++ |
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| 189 | buffer->checkBuffer(); |
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[509] | 190 | } |
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[300] | 191 | |
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[512] | 192 | /*! |
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| 193 | Verify state of buffers. Buffer is under pending state if there is no message on it |
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| 194 | \return state of buffers, pending(true), ready(false) |
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| 195 | */ |
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[300] | 196 | bool CContextClient::checkBuffers(void) |
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| 197 | { |
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[595] | 198 | map<int,CClientBuffer*>::iterator itBuff; |
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| 199 | bool pending = false; |
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| 200 | for (itBuff = buffers.begin(); itBuff != buffers.end(); itBuff++) pending |= itBuff->second->checkBuffer(); |
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| 201 | return pending; |
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[509] | 202 | } |
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[300] | 203 | |
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[512] | 204 | //! Release all buffers |
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[300] | 205 | void CContextClient::releaseBuffers(void) |
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| 206 | { |
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[595] | 207 | map<int,CClientBuffer*>::iterator itBuff; |
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| 208 | for (itBuff = buffers.begin(); itBuff != buffers.end(); itBuff++) delete itBuff->second; |
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[509] | 209 | } |
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[300] | 210 | |
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[512] | 211 | /*! |
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| 212 | Verify state of buffers corresponding to a connection |
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| 213 | \param [in] ranks list rank of server to which client connects to |
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| 214 | \return state of buffers, pending(true), ready(false) |
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| 215 | */ |
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[300] | 216 | bool CContextClient::checkBuffers(list<int>& ranks) |
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| 217 | { |
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[595] | 218 | list<int>::iterator it; |
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| 219 | bool pending = false; |
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| 220 | for (it = ranks.begin(); it != ranks.end(); it++) pending |= buffers[*it]->checkBuffer(); |
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| 221 | return pending; |
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[509] | 222 | } |
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[300] | 223 | |
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[512] | 224 | /*! |
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[917] | 225 | * Set the buffer size for each connection. Warning: This function is collective. |
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| 226 | * |
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| 227 | * \param [in] mapSize maps the rank of the connected servers to the size of the correspoinding buffer |
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| 228 | * \param [in] maxEventSize maps the rank of the connected servers to the size of the biggest event |
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[512] | 229 | */ |
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[917] | 230 | void CContextClient::setBufferSize(const std::map<int,StdSize>& mapSize, const std::map<int,StdSize>& maxEventSize) |
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[509] | 231 | { |
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| 232 | mapBufferSize_ = mapSize; |
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[917] | 233 | |
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| 234 | // Compute the maximum number of events that can be safely buffered. |
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| 235 | double minBufferSizeEventSizeRatio = std::numeric_limits<double>::max(); |
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| 236 | for (std::map<int,StdSize>::const_iterator it = mapSize.begin(), ite = mapSize.end(); it != ite; ++it) |
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| 237 | { |
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| 238 | double ratio = double(it->second) / maxEventSize.at(it->first); |
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| 239 | if (ratio < minBufferSizeEventSizeRatio) minBufferSizeEventSizeRatio = ratio; |
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| 240 | } |
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| 241 | MPI_Allreduce(MPI_IN_PLACE, &minBufferSizeEventSizeRatio, 1, MPI_DOUBLE, MPI_MIN, intraComm); |
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| 242 | |
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| 243 | if (minBufferSizeEventSizeRatio < 1.0) |
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| 244 | ERROR("void CContextClient::setBufferSize(const std::map<int,StdSize>& mapSize, const std::map<int,StdSize>& maxEventSize)", |
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| 245 | << "The buffer sizes and the maximum events sizes are incoherent."); |
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| 246 | |
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| 247 | maxBufferedEvents = size_t(2 * minBufferSizeEventSizeRatio) // there is room for two local buffers on the server |
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| 248 | + size_t(minBufferSizeEventSizeRatio) // one local buffer can always be fully used |
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| 249 | + 1; // the other local buffer might contain only one event |
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[509] | 250 | } |
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| 251 | |
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[1021] | 252 | /*! |
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| 253 | Get leading server in the group of connected server |
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| 254 | \return ranks of leading servers |
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| 255 | */ |
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| 256 | const std::list<int>& CContextClient::getRanksServerNotLeader(void) const |
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| 257 | { |
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| 258 | return ranksServerNotLeader; |
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| 259 | } |
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| 260 | |
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| 261 | /*! |
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| 262 | Check if client connects to leading server |
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| 263 | \return connected(true), not connected (false) |
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| 264 | */ |
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| 265 | bool CContextClient::isServerNotLeader(void) const |
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| 266 | { |
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| 267 | return !ranksServerNotLeader.empty(); |
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| 268 | } |
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| 269 | |
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[595] | 270 | /*! |
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| 271 | Get leading server in the group of connected server |
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| 272 | \return ranks of leading servers |
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| 273 | */ |
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| 274 | const std::list<int>& CContextClient::getRanksServerLeader(void) const |
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| 275 | { |
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| 276 | return ranksServerLeader; |
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| 277 | } |
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[509] | 278 | |
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[595] | 279 | /*! |
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| 280 | Check if client connects to leading server |
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| 281 | \return connected(true), not connected (false) |
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| 282 | */ |
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| 283 | bool CContextClient::isServerLeader(void) const |
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| 284 | { |
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| 285 | return !ranksServerLeader.empty(); |
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| 286 | } |
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[300] | 287 | |
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[704] | 288 | /*! |
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| 289 | * Check if the attached mode is used. |
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| 290 | * |
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| 291 | * \return true if and only if attached mode is used |
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| 292 | */ |
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| 293 | bool CContextClient::isAttachedModeEnabled() const |
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| 294 | { |
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| 295 | return (parentServer != 0); |
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| 296 | } |
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[697] | 297 | |
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[512] | 298 | /*! |
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| 299 | Finalize context client and do some reports |
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| 300 | */ |
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[300] | 301 | void CContextClient::finalize(void) |
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| 302 | { |
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[595] | 303 | map<int,CClientBuffer*>::iterator itBuff; |
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| 304 | bool stop = true; |
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[731] | 305 | |
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[595] | 306 | CEventClient event(CContext::GetType(), CContext::EVENT_ID_CONTEXT_FINALIZE); |
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[300] | 307 | if (isServerLeader()) |
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| 308 | { |
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[595] | 309 | CMessage msg; |
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| 310 | const std::list<int>& ranks = getRanksServerLeader(); |
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| 311 | for (std::list<int>::const_iterator itRank = ranks.begin(), itRankEnd = ranks.end(); itRank != itRankEnd; ++itRank) |
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| 312 | event.push(*itRank, 1, msg); |
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| 313 | sendEvent(event); |
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[300] | 314 | } |
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[595] | 315 | else sendEvent(event); |
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[509] | 316 | |
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[347] | 317 | CTimer::get("Blocking time").resume(); |
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[595] | 318 | while (stop) |
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[300] | 319 | { |
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[595] | 320 | checkBuffers(); |
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| 321 | stop = false; |
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| 322 | for (itBuff = buffers.begin(); itBuff != buffers.end(); itBuff++) stop |= itBuff->second->hasPendingRequest(); |
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[300] | 323 | } |
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[347] | 324 | CTimer::get("Blocking time").suspend(); |
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[509] | 325 | |
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[595] | 326 | std::map<int,StdSize>::const_iterator itbMap = mapBufferSize_.begin(), |
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| 327 | iteMap = mapBufferSize_.end(), itMap; |
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[511] | 328 | StdSize totalBuf = 0; |
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| 329 | for (itMap = itbMap; itMap != iteMap; ++itMap) |
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| 330 | { |
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[595] | 331 | report(10) << " Memory report : Context <" << context->getId() << "> : client side : memory used for buffer of each connection to server" << endl |
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| 332 | << " +) To server with rank " << itMap->first << " : " << itMap->second << " bytes " << endl; |
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[511] | 333 | totalBuf += itMap->second; |
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| 334 | } |
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[595] | 335 | report(0) << " Memory report : Context <" << context->getId() << "> : client side : total memory used for buffer " << totalBuf << " bytes" << endl; |
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[511] | 336 | |
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[595] | 337 | releaseBuffers(); |
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[300] | 338 | } |
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[509] | 339 | } |
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