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