[2343] | 1 | #include "xios_spl.hpp" |
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| 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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| 10 | #include "mpi.hpp" |
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| 11 | #include "timer.hpp" |
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| 12 | #include "cxios.hpp" |
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| 13 | #include "server.hpp" |
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| 14 | #include "services.hpp" |
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| 15 | #include <boost/functional/hash.hpp> |
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| 16 | #include <random> |
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| 17 | #include <chrono> |
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| 18 | #include "one_sided_context_client.hpp" |
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| 19 | #include "legacy_context_client.hpp" |
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| 20 | |
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| 21 | namespace xios |
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| 22 | { |
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| 23 | /*! |
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| 24 | \param [in] parent Pointer to context on client side |
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| 25 | \param [in] intraComm_ communicator of group client |
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| 26 | \param [in] interComm_ communicator of group server |
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| 27 | \cxtSer [in] cxtSer Pointer to context of server side. (It is only used in case of attached mode). |
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| 28 | */ |
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| 29 | CContextClient::CContextClient(CContext* parent, MPI_Comm intraComm_, MPI_Comm interComm_, CContext* cxtSer) |
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| 30 | : parentServer(cxtSer), associatedServer_(nullptr) |
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| 31 | { |
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| 32 | |
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| 33 | context_ = parent; |
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| 34 | intraComm = intraComm_; |
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| 35 | interComm = interComm_; |
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| 36 | MPI_Comm_rank(intraComm, &clientRank); |
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| 37 | MPI_Comm_size(intraComm, &clientSize); |
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| 38 | |
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| 39 | int flag; |
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| 40 | MPI_Comm_test_inter(interComm, &flag); |
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| 41 | if (flag) isAttached_=false ; |
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| 42 | else isAttached_=true ; |
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| 43 | |
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| 44 | if (flag) MPI_Comm_remote_size(interComm, &serverSize); |
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| 45 | else MPI_Comm_size(interComm, &serverSize); |
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| 46 | |
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| 47 | computeLeader(clientRank, clientSize, serverSize, ranksServerLeader, ranksServerNotLeader); |
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| 48 | |
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| 49 | auto time=chrono::system_clock::now().time_since_epoch().count() ; |
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| 50 | std::default_random_engine rd(time); // not reproducible from a run to another |
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| 51 | std::uniform_int_distribution<size_t> dist; |
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| 52 | hashId_=dist(rd) ; |
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| 53 | MPI_Bcast(&hashId_,1,MPI_SIZE_T,0,intraComm) ; // Bcast to all server of the context |
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| 54 | |
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| 55 | } |
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| 56 | |
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| 57 | template<> |
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| 58 | CContextClient* CContextClient::getNew<CContextClient::generic>(CContext* parent, MPI_Comm intraComm, MPI_Comm interComm, CContext* parentServer) |
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| 59 | { |
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| 60 | string defaultProtocol = CXios::getin<string>("transport_protocol", "default") ; |
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| 61 | if (defaultProtocol=="one_sided") return getNew<CContextClient::oneSided>(parent, intraComm, interComm) ; |
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| 62 | else if (defaultProtocol=="legacy") return getNew<CContextClient::legacy>(parent, intraComm, interComm) ; |
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| 63 | else if (defaultProtocol=="default") return getNew<CContextClient::legacy>(parent, intraComm, interComm) ; |
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| 64 | else ERROR("CContextClient* CContextClient::getNew<CContextClient::generic>(CContext* parent, MPI_Comm intraComm, MPI_Comm interComm, CContext* parentServer)", |
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| 65 | <<"Protocol name <"<<defaultProtocol<<"> is undefined, must be <default>, <one_sided> or <legacy>" ) ; |
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| 66 | } |
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| 67 | |
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| 68 | template<> |
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| 69 | CContextClient* CContextClient::getNew<CContextClient::oneSided>(CContext* parent, MPI_Comm intraComm, MPI_Comm interComm, CContext* parentServer) |
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| 70 | { |
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| 71 | return new COneSidedContextClient(parent, intraComm, interComm, parentServer); |
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| 72 | } |
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| 73 | |
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| 74 | template<> |
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| 75 | CContextClient* CContextClient::getNew<CContextClient::legacy>(CContext* parent, MPI_Comm intraComm, MPI_Comm interComm, CContext* parentServer) |
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| 76 | { |
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| 77 | return new CLegacyContextClient(parent, intraComm, interComm, parentServer); |
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| 78 | } |
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| 79 | |
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| 80 | void CContextClient::computeLeader(int clientRank, int clientSize, int serverSize, |
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| 81 | std::list<int>& rankRecvLeader, |
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| 82 | std::list<int>& rankRecvNotLeader) |
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| 83 | { |
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| 84 | if ((0 == clientSize) || (0 == serverSize)) return; |
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| 85 | |
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| 86 | if (clientSize < serverSize) |
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| 87 | { |
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| 88 | int serverByClient = serverSize / clientSize; |
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| 89 | int remain = serverSize % clientSize; |
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| 90 | int rankStart = serverByClient * clientRank; |
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| 91 | |
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| 92 | if (clientRank < remain) |
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| 93 | { |
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| 94 | serverByClient++; |
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| 95 | rankStart += clientRank; |
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| 96 | } |
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| 97 | else |
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| 98 | rankStart += remain; |
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| 99 | |
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| 100 | for (int i = 0; i < serverByClient; i++) |
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| 101 | rankRecvLeader.push_back(rankStart + i); |
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| 102 | |
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| 103 | rankRecvNotLeader.resize(0); |
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| 104 | } |
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| 105 | else |
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| 106 | { |
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| 107 | int clientByServer = clientSize / serverSize; |
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| 108 | int remain = clientSize % serverSize; |
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| 109 | |
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| 110 | if (clientRank < (clientByServer + 1) * remain) |
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| 111 | { |
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| 112 | if (clientRank % (clientByServer + 1) == 0) |
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| 113 | rankRecvLeader.push_back(clientRank / (clientByServer + 1)); |
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| 114 | else |
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| 115 | rankRecvNotLeader.push_back(clientRank / (clientByServer + 1)); |
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| 116 | } |
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| 117 | else |
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| 118 | { |
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| 119 | int rank = clientRank - (clientByServer + 1) * remain; |
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| 120 | if (rank % clientByServer == 0) |
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| 121 | rankRecvLeader.push_back(remain + rank / clientByServer); |
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| 122 | else |
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| 123 | rankRecvNotLeader.push_back(remain + rank / clientByServer); |
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| 124 | } |
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| 125 | } |
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| 126 | } |
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| 127 | |
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| 128 | /*! |
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| 129 | Get leading server in the group of connected server |
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| 130 | \return ranks of leading servers |
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| 131 | */ |
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| 132 | const std::list<int>& CContextClient::getRanksServerNotLeader(void) const |
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| 133 | { |
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| 134 | return ranksServerNotLeader; |
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| 135 | } |
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| 136 | |
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| 137 | /*! |
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| 138 | Check if client connects to leading server |
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| 139 | \return connected(true), not connected (false) |
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| 140 | */ |
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| 141 | bool CContextClient::isServerNotLeader(void) const |
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| 142 | { |
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| 143 | return !ranksServerNotLeader.empty(); |
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| 144 | } |
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| 145 | |
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| 146 | /*! |
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| 147 | Get leading server in the group of connected server |
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| 148 | \return ranks of leading servers |
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| 149 | */ |
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| 150 | const std::list<int>& CContextClient::getRanksServerLeader(void) const |
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| 151 | { |
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| 152 | return ranksServerLeader; |
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| 153 | } |
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| 154 | |
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| 155 | /*! |
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| 156 | Check if client connects to leading server |
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| 157 | \return connected(true), not connected (false) |
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| 158 | */ |
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| 159 | bool CContextClient::isServerLeader(void) const |
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| 160 | { |
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| 161 | return !ranksServerLeader.empty(); |
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| 162 | } |
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| 163 | |
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| 164 | |
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| 165 | |
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| 166 | } |
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