[569] | 1 | /*! |
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| 2 | \file client_server_mapping.hpp |
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| 3 | \author Ha NGUYEN |
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| 4 | \since 27 Feb 2015 |
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| 5 | \date 09 Mars 2015 |
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| 6 | |
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| 7 | \brief Mapping between index client and server. |
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| 8 | Clients pre-calculate all information of server distribution. |
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| 9 | */ |
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[568] | 10 | #include "client_server_mapping_distributed.hpp" |
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| 11 | #include <limits> |
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| 12 | #include <boost/functional/hash.hpp> |
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[584] | 13 | #include "utils.hpp" |
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[568] | 14 | |
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| 15 | namespace xios |
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| 16 | { |
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| 17 | |
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| 18 | CClientServerMappingDistributed::CClientServerMappingDistributed(const boost::unordered_map<size_t,int>& globalIndexOfServer, |
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[585] | 19 | const MPI_Comm& clientIntraComm, bool isDataDistributed) |
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[569] | 20 | : CClientServerMapping(), indexClientHash_(), countIndexGlobal_(0), countIndexServer_(0), |
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[585] | 21 | indexGlobalBuffBegin_(), indexServerBuffBegin_(), requestRecvIndexServer_(), isDataDistributed_(isDataDistributed) |
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[568] | 22 | { |
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| 23 | clientIntraComm_ = clientIntraComm; |
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| 24 | MPI_Comm_size(clientIntraComm,&(nbClient_)); |
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[569] | 25 | MPI_Comm_rank(clientIntraComm,&clientRank_); |
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| 26 | computeHashIndex(); |
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[568] | 27 | computeDistributedServerIndex(globalIndexOfServer, clientIntraComm); |
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| 28 | } |
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| 29 | |
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| 30 | CClientServerMappingDistributed::~CClientServerMappingDistributed() |
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| 31 | { |
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[569] | 32 | } |
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[568] | 33 | |
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[569] | 34 | /*! |
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| 35 | Compute mapping global index of server which client sends to. |
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| 36 | \param [in] globalIndexOnClient global index client has |
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| 37 | */ |
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[584] | 38 | void CClientServerMappingDistributed::computeServerIndexMapping(const CArray<size_t,1>& globalIndexOnClient) |
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[568] | 39 | { |
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| 40 | size_t ssize = globalIndexOnClient.numElements(), hashedIndex; |
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| 41 | |
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| 42 | std::vector<size_t>::const_iterator itbClientHash = indexClientHash_.begin(), itClientHash, |
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| 43 | iteClientHash = indexClientHash_.end(); |
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| 44 | std::map<int, std::vector<size_t> > client2ClientIndexGlobal; |
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| 45 | std::map<int, std::vector<int> > client2ClientIndexServer; |
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| 46 | |
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| 47 | // Number of global index whose mapping server can be found out thanks to index-server mapping |
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| 48 | int nbIndexAlreadyOnClient = 0; |
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| 49 | |
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| 50 | // Number of global index whose mapping server are on other clients |
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| 51 | int nbIndexSendToOthers = 0; |
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[584] | 52 | HashXIOS<size_t> hashGlobalIndex; |
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[568] | 53 | for (int i = 0; i < ssize; ++i) |
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| 54 | { |
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| 55 | size_t globalIndexClient = globalIndexOnClient(i); |
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| 56 | hashedIndex = hashGlobalIndex(globalIndexClient); |
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| 57 | itClientHash = std::upper_bound(itbClientHash, iteClientHash, hashedIndex); |
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| 58 | if (iteClientHash != itClientHash) |
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| 59 | { |
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| 60 | int indexClient = std::distance(itbClientHash, itClientHash)-1; |
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| 61 | { |
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| 62 | client2ClientIndexGlobal[indexClient].push_back(globalIndexClient); |
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| 63 | ++nbIndexSendToOthers; |
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| 64 | } |
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| 65 | } |
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| 66 | } |
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| 67 | |
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| 68 | int* sendBuff = new int[nbClient_]; |
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| 69 | for (int i = 0; i < nbClient_; ++i) sendBuff[i] = 0; |
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[630] | 70 | std::map<int, std::vector<size_t> >::iterator itb = client2ClientIndexGlobal.begin(), it, |
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| 71 | ite = client2ClientIndexGlobal.end(); |
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| 72 | for (it = itb; it != ite; ++it) sendBuff[it->first] = 1; |
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[568] | 73 | int* recvBuff = new int[nbClient_]; |
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| 74 | MPI_Allreduce(sendBuff, recvBuff, nbClient_, MPI_INT, MPI_SUM, clientIntraComm_); |
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| 75 | |
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| 76 | std::list<MPI_Request> sendRequest; |
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| 77 | if (0 != nbIndexSendToOthers) |
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[630] | 78 | for (it = itb; it != ite; ++it) |
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[568] | 79 | sendIndexGlobalToClients(it->first, it->second, clientIntraComm_, sendRequest); |
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| 80 | |
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[585] | 81 | int nbDemandingClient = recvBuff[clientRank_], nbIndexServerReceived = 0; |
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[624] | 82 | |
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[568] | 83 | // Receiving demand as well as the responds from other clients |
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| 84 | // The demand message contains global index; meanwhile the responds have server index information |
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| 85 | // Buffer to receive demand from other clients, it can be allocated or not depending whether it has demand(s) |
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[630] | 86 | // There are some cases we demand duplicate index so need to determine maxium size of demanding buffer |
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| 87 | for (it = itb; it != ite; ++it) sendBuff[it->first] = (it->second).size(); |
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| 88 | MPI_Allreduce(sendBuff, recvBuff, nbClient_, MPI_INT, MPI_SUM, clientIntraComm_); |
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| 89 | |
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[568] | 90 | unsigned long* recvBuffIndexGlobal = 0; |
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[630] | 91 | int maxNbIndexDemandedFromOthers = recvBuff[clientRank_]; |
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[624] | 92 | if (!isDataDistributed_) maxNbIndexDemandedFromOthers = nbDemandingClient * nbIndexSendToOthers; //globalIndexToServerMapping_.size(); // Not very optimal but it's general |
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| 93 | |
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[568] | 94 | if (0 != maxNbIndexDemandedFromOthers) |
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| 95 | recvBuffIndexGlobal = new unsigned long[maxNbIndexDemandedFromOthers]; |
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| 96 | |
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| 97 | // Buffer to receive respond from other clients, it can be allocated or not depending whether it demands other clients |
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| 98 | int* recvBuffIndexServer = 0; |
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| 99 | int nbIndexReceivedFromOthers = nbIndexSendToOthers; |
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| 100 | if (0 != nbIndexReceivedFromOthers) |
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| 101 | recvBuffIndexServer = new int[nbIndexReceivedFromOthers]; |
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| 102 | |
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| 103 | std::map<int, MPI_Request>::iterator itRequest; |
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| 104 | std::vector<int> demandAlreadyReceived, repondAlreadyReceived; |
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[584] | 105 | |
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[585] | 106 | |
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[584] | 107 | resetReceivingRequestAndCount(); |
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[568] | 108 | while ((0 < nbDemandingClient) || (!sendRequest.empty()) || |
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| 109 | (nbIndexServerReceived < nbIndexReceivedFromOthers)) |
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| 110 | { |
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| 111 | // Just check whether a client has any demand from other clients. |
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| 112 | // If it has, then it should send responds to these client(s) |
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| 113 | probeIndexGlobalMessageFromClients(recvBuffIndexGlobal, maxNbIndexDemandedFromOthers); |
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| 114 | if (0 < nbDemandingClient) |
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| 115 | { |
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| 116 | for (itRequest = requestRecvIndexGlobal_.begin(); |
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| 117 | itRequest != requestRecvIndexGlobal_.end(); ++itRequest) |
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| 118 | { |
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| 119 | int flagIndexGlobal, count; |
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| 120 | MPI_Status statusIndexGlobal; |
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| 121 | |
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| 122 | MPI_Test(&(itRequest->second), &flagIndexGlobal, &statusIndexGlobal); |
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| 123 | if (true == flagIndexGlobal) |
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| 124 | { |
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| 125 | MPI_Get_count(&statusIndexGlobal, MPI_UNSIGNED_LONG, &count); |
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| 126 | int clientSourceRank = statusIndexGlobal.MPI_SOURCE; |
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| 127 | unsigned long* beginBuff = indexGlobalBuffBegin_[clientSourceRank]; |
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| 128 | for (int i = 0; i < count; ++i) |
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| 129 | { |
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| 130 | client2ClientIndexServer[clientSourceRank].push_back(globalIndexToServerMapping_[*(beginBuff+i)]); |
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| 131 | } |
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| 132 | sendIndexServerToClients(clientSourceRank, client2ClientIndexServer[clientSourceRank], clientIntraComm_, sendRequest); |
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| 133 | --nbDemandingClient; |
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| 134 | |
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| 135 | demandAlreadyReceived.push_back(clientSourceRank); |
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| 136 | } |
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| 137 | } |
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| 138 | for (int i = 0; i< demandAlreadyReceived.size(); ++i) |
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| 139 | requestRecvIndexGlobal_.erase(demandAlreadyReceived[i]); |
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| 140 | } |
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| 141 | |
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| 142 | testSendRequest(sendRequest); |
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| 143 | |
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| 144 | // In some cases, a client need to listen respond from other clients about server information |
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| 145 | // Ok, with the information, a client can fill in its server-global index map. |
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| 146 | probeIndexServerMessageFromClients(recvBuffIndexServer, nbIndexReceivedFromOthers); |
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| 147 | for (itRequest = requestRecvIndexServer_.begin(); |
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| 148 | itRequest != requestRecvIndexServer_.end(); |
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| 149 | ++itRequest) |
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| 150 | { |
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| 151 | int flagIndexServer, count; |
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| 152 | MPI_Status statusIndexServer; |
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| 153 | |
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| 154 | MPI_Test(&(itRequest->second), &flagIndexServer, &statusIndexServer); |
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| 155 | if (true == flagIndexServer) |
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| 156 | { |
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| 157 | MPI_Get_count(&statusIndexServer, MPI_INT, &count); |
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| 158 | int clientSourceRank = statusIndexServer.MPI_SOURCE; |
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| 159 | int* beginBuff = indexServerBuffBegin_[clientSourceRank]; |
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| 160 | std::vector<size_t>& globalIndexTmp = client2ClientIndexGlobal[clientSourceRank]; |
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| 161 | for (int i = 0; i < count; ++i) |
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| 162 | { |
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| 163 | (indexGlobalOnServer_[*(beginBuff+i)]).push_back(globalIndexTmp[i]); |
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| 164 | } |
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| 165 | nbIndexServerReceived += count; |
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| 166 | repondAlreadyReceived.push_back(clientSourceRank); |
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| 167 | } |
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| 168 | } |
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| 169 | |
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| 170 | for (int i = 0; i< repondAlreadyReceived.size(); ++i) |
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| 171 | requestRecvIndexServer_.erase(repondAlreadyReceived[i]); |
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| 172 | repondAlreadyReceived.resize(0); |
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| 173 | } |
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| 174 | |
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[623] | 175 | if (0 != maxNbIndexDemandedFromOthers) delete [] recvBuffIndexGlobal; |
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| 176 | if (0 != nbIndexReceivedFromOthers) delete [] recvBuffIndexServer; |
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[568] | 177 | delete [] sendBuff; |
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| 178 | delete [] recvBuff; |
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| 179 | } |
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| 180 | |
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[569] | 181 | /*! |
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| 182 | Compute the hash index distribution of whole size_t space then each client will have a range of this distribution |
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| 183 | */ |
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[568] | 184 | void CClientServerMappingDistributed::computeHashIndex() |
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| 185 | { |
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| 186 | // Compute range of hash index for each client |
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| 187 | indexClientHash_.resize(nbClient_+1); |
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| 188 | size_t nbHashIndexMax = std::numeric_limits<size_t>::max(); |
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| 189 | size_t nbHashIndex; |
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| 190 | indexClientHash_[0] = 0; |
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| 191 | for (int i = 1; i < nbClient_; ++i) |
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| 192 | { |
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| 193 | nbHashIndex = nbHashIndexMax / nbClient_; |
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| 194 | if (i < (nbHashIndexMax%nbClient_)) ++nbHashIndex; |
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| 195 | indexClientHash_[i] = indexClientHash_[i-1] + nbHashIndex; |
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| 196 | } |
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| 197 | indexClientHash_[nbClient_] = nbHashIndexMax; |
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| 198 | } |
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| 199 | |
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[569] | 200 | /*! |
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| 201 | Compute distribution of global index for servers |
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| 202 | Each client already holds a piece of information about global index and the corresponding server. |
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[585] | 203 | This information is redistributed into size_t space in which each client possesses a specific range of index. |
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| 204 | After the redistribution, each client as well as its range of index contains all necessary information about server. |
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[569] | 205 | \param [in] globalIndexOfServer global index and the corresponding server |
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| 206 | \param [in] clientIntraComm client joining distribution process. |
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| 207 | */ |
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[568] | 208 | void CClientServerMappingDistributed::computeDistributedServerIndex(const boost::unordered_map<size_t,int>& globalIndexOfServer, |
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| 209 | const MPI_Comm& clientIntraComm) |
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| 210 | { |
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| 211 | int* sendBuff = new int[nbClient_]; |
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| 212 | int* sendNbIndexBuff = new int[nbClient_]; |
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| 213 | for (int i = 0; i < nbClient_; ++i) |
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| 214 | { |
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| 215 | sendBuff[i] = 0; sendNbIndexBuff[i] = 0; |
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| 216 | } |
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| 217 | |
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| 218 | // Compute size of sending and receving buffer |
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| 219 | std::map<int, std::vector<size_t> > client2ClientIndexGlobal; |
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| 220 | std::map<int, std::vector<int> > client2ClientIndexServer; |
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| 221 | |
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| 222 | std::vector<size_t>::const_iterator itbClientHash = indexClientHash_.begin(), itClientHash, |
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| 223 | iteClientHash = indexClientHash_.end(); |
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| 224 | boost::unordered_map<size_t,int>::const_iterator it = globalIndexOfServer.begin(), |
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| 225 | ite = globalIndexOfServer.end(); |
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[584] | 226 | HashXIOS<size_t> hashGlobalIndex; |
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[568] | 227 | for (; it != ite; ++it) |
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| 228 | { |
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| 229 | size_t hashIndex = hashGlobalIndex(it->first); |
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| 230 | itClientHash = std::upper_bound(itbClientHash, iteClientHash, hashIndex); |
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| 231 | if (itClientHash != iteClientHash) |
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| 232 | { |
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| 233 | int indexClient = std::distance(itbClientHash, itClientHash)-1; |
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| 234 | { |
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| 235 | sendBuff[indexClient] = 1; |
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| 236 | ++sendNbIndexBuff[indexClient]; |
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| 237 | client2ClientIndexGlobal[indexClient].push_back(it->first); |
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| 238 | client2ClientIndexServer[indexClient].push_back(it->second); |
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| 239 | } |
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| 240 | } |
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| 241 | } |
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| 242 | |
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[569] | 243 | // Calculate from how many clients each client receive message. |
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[568] | 244 | int* recvBuff = new int[nbClient_]; |
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| 245 | MPI_Allreduce(sendBuff, recvBuff, nbClient_, MPI_INT, MPI_SUM, clientIntraComm); |
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[569] | 246 | int recvNbClient = recvBuff[clientRank_]; |
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[568] | 247 | |
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[569] | 248 | // Calculate size of buffer for receiving message |
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[568] | 249 | int* recvNbIndexBuff = new int[nbClient_]; |
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| 250 | MPI_Allreduce(sendNbIndexBuff, recvNbIndexBuff, nbClient_, MPI_INT, MPI_SUM, clientIntraComm); |
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[569] | 251 | int recvNbIndexCount = recvNbIndexBuff[clientRank_]; |
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[568] | 252 | unsigned long* recvIndexGlobalBuff = new unsigned long[recvNbIndexCount]; |
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| 253 | int* recvIndexServerBuff = new int[recvNbIndexCount]; |
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| 254 | |
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[569] | 255 | // If a client holds information about global index and servers which don't belong to it, |
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| 256 | // it will send a message to the correct clients. |
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| 257 | // Contents of the message are global index and its corresponding server index |
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[568] | 258 | std::list<MPI_Request> sendRequest; |
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| 259 | std::map<int, std::vector<size_t> >::iterator itGlobal = client2ClientIndexGlobal.begin(), |
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| 260 | iteGlobal = client2ClientIndexGlobal.end(); |
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[569] | 261 | for ( ;itGlobal != iteGlobal; ++itGlobal) |
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[568] | 262 | sendIndexGlobalToClients(itGlobal->first, itGlobal->second, clientIntraComm, sendRequest); |
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| 263 | std::map<int, std::vector<int> >::iterator itServer = client2ClientIndexServer.begin(), |
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| 264 | iteServer = client2ClientIndexServer.end(); |
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| 265 | for (; itServer != iteServer; ++itServer) |
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| 266 | sendIndexServerToClients(itServer->first, itServer->second, clientIntraComm, sendRequest); |
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| 267 | |
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[569] | 268 | std::map<int, MPI_Request>::iterator itRequestIndexGlobal, itRequestIndexServer; |
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| 269 | std::map<int, int> countBuffIndexServer, countBuffIndexGlobal; |
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| 270 | std::vector<int> processedList; |
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| 271 | |
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| 272 | bool isFinished = (0 == recvNbClient) ? true : false; |
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| 273 | |
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| 274 | // Just to make sure before listening message, all counting index and receiving request have already beeen reset |
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| 275 | resetReceivingRequestAndCount(); |
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| 276 | |
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| 277 | // Now each client trys to listen to demand from others. |
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| 278 | // If they have message, it processes: pushing global index and corresponding server to its map |
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[568] | 279 | while (!isFinished || (!sendRequest.empty())) |
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| 280 | { |
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| 281 | testSendRequest(sendRequest); |
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| 282 | probeIndexGlobalMessageFromClients(recvIndexGlobalBuff, recvNbIndexCount); |
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| 283 | |
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| 284 | // Processing complete request |
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| 285 | for (itRequestIndexGlobal = requestRecvIndexGlobal_.begin(); |
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| 286 | itRequestIndexGlobal != requestRecvIndexGlobal_.end(); |
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| 287 | ++itRequestIndexGlobal) |
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| 288 | { |
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| 289 | int rank = itRequestIndexGlobal->first; |
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| 290 | int countIndexGlobal = computeBuffCountIndexGlobal(itRequestIndexGlobal->second); |
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| 291 | if (0 != countIndexGlobal) |
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| 292 | countBuffIndexGlobal[rank] = countIndexGlobal; |
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| 293 | } |
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| 294 | |
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| 295 | probeIndexServerMessageFromClients(recvIndexServerBuff, recvNbIndexCount); |
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| 296 | for (itRequestIndexServer = requestRecvIndexServer_.begin(); |
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| 297 | itRequestIndexServer != requestRecvIndexServer_.end(); |
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| 298 | ++itRequestIndexServer) |
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| 299 | { |
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| 300 | int rank = itRequestIndexServer->first; |
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| 301 | int countIndexServer = computeBuffCountIndexServer(itRequestIndexServer->second); |
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| 302 | if (0 != countIndexServer) |
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| 303 | countBuffIndexServer[rank] = countIndexServer; |
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| 304 | } |
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| 305 | |
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| 306 | for (std::map<int, int>::iterator it = countBuffIndexGlobal.begin(); |
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| 307 | it != countBuffIndexGlobal.end(); ++it) |
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| 308 | { |
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| 309 | int rank = it->first; |
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| 310 | if (countBuffIndexServer.end() != countBuffIndexServer.find(rank)) |
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| 311 | { |
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| 312 | processReceivedRequest(indexGlobalBuffBegin_[rank], indexServerBuffBegin_[rank], it->second); |
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| 313 | processedList.push_back(rank); |
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| 314 | --recvNbClient; |
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| 315 | } |
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| 316 | } |
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| 317 | |
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| 318 | for (int i = 0; i < processedList.size(); ++i) |
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| 319 | { |
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| 320 | requestRecvIndexServer_.erase(processedList[i]); |
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| 321 | requestRecvIndexGlobal_.erase(processedList[i]); |
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| 322 | countBuffIndexGlobal.erase(processedList[i]); |
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| 323 | countBuffIndexServer.erase(processedList[i]); |
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| 324 | } |
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| 325 | |
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| 326 | if (0 == recvNbClient) isFinished = true; |
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| 327 | } |
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| 328 | |
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| 329 | delete [] sendBuff; |
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| 330 | delete [] sendNbIndexBuff; |
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| 331 | delete [] recvBuff; |
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| 332 | delete [] recvNbIndexBuff; |
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| 333 | delete [] recvIndexGlobalBuff; |
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| 334 | delete [] recvIndexServerBuff; |
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| 335 | } |
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| 336 | |
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[569] | 337 | /*! |
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| 338 | Probe and receive message containg global index from other clients. |
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| 339 | Each client can send a message of global index to other clients to fulfill their maps. |
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| 340 | Each client probes message from its queue then if the message is ready, it will be put into the receiving buffer |
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| 341 | \param [in] recvIndexGlobalBuff buffer dedicated for receiving global index |
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| 342 | \param [in] recvNbIndexCount size of the buffer |
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| 343 | */ |
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[568] | 344 | void CClientServerMappingDistributed::probeIndexGlobalMessageFromClients(unsigned long* recvIndexGlobalBuff, int recvNbIndexCount) |
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| 345 | { |
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| 346 | MPI_Status statusIndexGlobal; |
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| 347 | int flagIndexGlobal, count; |
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| 348 | |
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| 349 | // Probing for global index |
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| 350 | MPI_Iprobe(MPI_ANY_SOURCE, 15, clientIntraComm_, &flagIndexGlobal, &statusIndexGlobal); |
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| 351 | if ((true == flagIndexGlobal) && (countIndexGlobal_ < recvNbIndexCount)) |
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| 352 | { |
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| 353 | MPI_Get_count(&statusIndexGlobal, MPI_UNSIGNED_LONG, &count); |
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| 354 | indexGlobalBuffBegin_.insert(std::make_pair<int, unsigned long*>(statusIndexGlobal.MPI_SOURCE, recvIndexGlobalBuff+countIndexGlobal_)); |
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| 355 | MPI_Irecv(recvIndexGlobalBuff+countIndexGlobal_, count, MPI_UNSIGNED_LONG, |
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| 356 | statusIndexGlobal.MPI_SOURCE, 15, clientIntraComm_, |
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| 357 | &requestRecvIndexGlobal_[statusIndexGlobal.MPI_SOURCE]); |
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| 358 | countIndexGlobal_ += count; |
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| 359 | } |
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| 360 | } |
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| 361 | |
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[569] | 362 | /*! |
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| 363 | Probe and receive message containg server index from other clients. |
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| 364 | Each client can send a message of server index to other clients to fulfill their maps. |
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| 365 | Each client probes message from its queue then if the message is ready, it will be put into the receiving buffer |
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| 366 | \param [in] recvIndexServerBuff buffer dedicated for receiving server index |
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| 367 | \param [in] recvNbIndexCount size of the buffer |
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| 368 | */ |
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[568] | 369 | void CClientServerMappingDistributed::probeIndexServerMessageFromClients(int* recvIndexServerBuff, int recvNbIndexCount) |
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| 370 | { |
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| 371 | MPI_Status statusIndexServer; |
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| 372 | int flagIndexServer, count; |
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| 373 | |
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| 374 | // Probing for server index |
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| 375 | MPI_Iprobe(MPI_ANY_SOURCE, 12, clientIntraComm_, &flagIndexServer, &statusIndexServer); |
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| 376 | if ((true == flagIndexServer) && (countIndexServer_ < recvNbIndexCount)) |
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| 377 | { |
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| 378 | MPI_Get_count(&statusIndexServer, MPI_INT, &count); |
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| 379 | indexServerBuffBegin_.insert(std::make_pair<int, int*>(statusIndexServer.MPI_SOURCE, recvIndexServerBuff+countIndexServer_)); |
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| 380 | MPI_Irecv(recvIndexServerBuff+countIndexServer_, count, MPI_INT, |
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| 381 | statusIndexServer.MPI_SOURCE, 12, clientIntraComm_, |
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| 382 | &requestRecvIndexServer_[statusIndexServer.MPI_SOURCE]); |
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| 383 | |
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| 384 | countIndexServer_ += count; |
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| 385 | } |
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| 386 | } |
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| 387 | |
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[569] | 388 | /*! |
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| 389 | Send message containing global index to clients |
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| 390 | \param [in] clientDestRank rank of destination client |
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| 391 | \param [in] indexGlobal global index to send |
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| 392 | \param [in] clientIntraComm communication group of client |
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| 393 | \param [in] requestSendIndexGlobal list of sending request |
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| 394 | */ |
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[568] | 395 | void CClientServerMappingDistributed::sendIndexGlobalToClients(int clientDestRank, std::vector<size_t>& indexGlobal, |
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| 396 | const MPI_Comm& clientIntraComm, |
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| 397 | std::list<MPI_Request>& requestSendIndexGlobal) |
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| 398 | { |
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| 399 | MPI_Request request; |
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| 400 | requestSendIndexGlobal.push_back(request); |
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| 401 | MPI_Isend(&(indexGlobal)[0], (indexGlobal).size(), MPI_UNSIGNED_LONG, |
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| 402 | clientDestRank, 15, clientIntraComm, &(requestSendIndexGlobal.back())); |
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| 403 | } |
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| 404 | |
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[569] | 405 | /*! |
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| 406 | Send message containing server index to clients |
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| 407 | \param [in] clientDestRank rank of destination client |
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| 408 | \param [in] indexServer server index to send |
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| 409 | \param [in] clientIntraComm communication group of client |
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| 410 | \param [in] requestSendIndexServer list of sending request |
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| 411 | */ |
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[568] | 412 | void CClientServerMappingDistributed::sendIndexServerToClients(int clientDestRank, std::vector<int>& indexServer, |
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| 413 | const MPI_Comm& clientIntraComm, |
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| 414 | std::list<MPI_Request>& requestSendIndexServer) |
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| 415 | { |
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| 416 | MPI_Request request; |
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| 417 | requestSendIndexServer.push_back(request); |
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| 418 | MPI_Isend(&(indexServer)[0], (indexServer).size(), MPI_INT, |
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| 419 | clientDestRank, 12, clientIntraComm, &(requestSendIndexServer.back())); |
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| 420 | } |
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| 421 | |
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[569] | 422 | /*! |
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| 423 | Verify status of sending request |
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| 424 | \param [in] sendRequest sending request to verify |
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| 425 | */ |
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[568] | 426 | void CClientServerMappingDistributed::testSendRequest(std::list<MPI_Request>& sendRequest) |
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| 427 | { |
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| 428 | int flag = 0; |
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| 429 | MPI_Status status; |
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| 430 | std::list<MPI_Request>::iterator itRequest; |
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| 431 | int sizeListRequest = sendRequest.size(); |
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| 432 | int idx = 0; |
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| 433 | while (idx < sizeListRequest) |
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| 434 | { |
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| 435 | bool isErased = false; |
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| 436 | for (itRequest = sendRequest.begin(); itRequest != sendRequest.end(); ++itRequest) |
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| 437 | { |
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| 438 | MPI_Test(&(*itRequest), &flag, &status); |
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| 439 | if (true == flag) |
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| 440 | { |
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| 441 | isErased = true; |
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| 442 | break; |
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| 443 | } |
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| 444 | } |
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| 445 | if (true == isErased) sendRequest.erase(itRequest); |
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| 446 | ++idx; |
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| 447 | } |
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| 448 | } |
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| 449 | |
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[569] | 450 | /*! |
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| 451 | Process the received request. Pushing global index and server index into map |
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| 452 | \param[in] buffIndexGlobal pointer to the begining of buffer containing global index |
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| 453 | \param[in] buffIndexServer pointer to the begining of buffer containing server index |
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| 454 | \param[in] count size of received message |
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| 455 | */ |
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[568] | 456 | void CClientServerMappingDistributed::processReceivedRequest(unsigned long* buffIndexGlobal, int* buffIndexServer, int count) |
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| 457 | { |
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| 458 | for (int i = 0; i < count; ++i) |
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| 459 | globalIndexToServerMapping_.insert(std::make_pair<size_t,int>(*(buffIndexGlobal+i),*(buffIndexServer+i))); |
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| 460 | } |
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| 461 | |
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[569] | 462 | /*! |
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| 463 | Compute size of message containing global index |
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| 464 | \param[in] requestRecv request of message |
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| 465 | */ |
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[568] | 466 | int CClientServerMappingDistributed::computeBuffCountIndexGlobal(MPI_Request& requestRecv) |
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| 467 | { |
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| 468 | int flag, count = 0; |
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| 469 | MPI_Status status; |
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| 470 | |
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| 471 | MPI_Test(&requestRecv, &flag, &status); |
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| 472 | if (true == flag) |
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| 473 | { |
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| 474 | MPI_Get_count(&status, MPI_UNSIGNED_LONG, &count); |
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| 475 | } |
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| 476 | |
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| 477 | return count; |
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| 478 | } |
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| 479 | |
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[569] | 480 | /*! |
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| 481 | Compute size of message containing server index |
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| 482 | \param[in] requestRecv request of message |
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| 483 | */ |
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[568] | 484 | int CClientServerMappingDistributed::computeBuffCountIndexServer(MPI_Request& requestRecv) |
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| 485 | { |
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| 486 | int flag, count = 0; |
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| 487 | MPI_Status status; |
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| 488 | |
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| 489 | MPI_Test(&requestRecv, &flag, &status); |
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| 490 | if (true == flag) |
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| 491 | { |
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| 492 | MPI_Get_count(&status, MPI_INT, &count); |
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| 493 | } |
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| 494 | |
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| 495 | return count; |
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| 496 | } |
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| 497 | |
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[569] | 498 | /*! |
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| 499 | Reset all receiving request map and counter |
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| 500 | */ |
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| 501 | void CClientServerMappingDistributed::resetReceivingRequestAndCount() |
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[568] | 502 | { |
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| 503 | countIndexGlobal_ = countIndexServer_ = 0; |
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| 504 | requestRecvIndexGlobal_.clear(); |
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| 505 | requestRecvIndexServer_.clear(); |
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| 506 | indexGlobalBuffBegin_.clear(); |
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| 507 | indexServerBuffBegin_.clear(); |
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| 508 | } |
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| 509 | |
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| 510 | } |
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