[720] | 1 | /*! |
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[721] | 2 | \file client_client_dht_template_impl.hpp |
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[720] | 3 | \author Ha NGUYEN |
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[721] | 4 | \since 05 Oct 2015 |
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| 5 | \date 05 Oct 2015 |
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[720] | 6 | |
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| 7 | \brief Distributed hashed table implementation. |
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| 8 | */ |
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[721] | 9 | #include "client_client_dht_template.hpp" |
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[720] | 10 | #include "utils.hpp" |
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| 11 | #include "mpi_tag.hpp" |
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| 12 | |
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| 13 | namespace xios |
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| 14 | { |
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| 15 | /*! |
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[721] | 16 | Constructor with initial distribution information and the corresponding index |
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| 17 | Each client (process) holds a piece of information as well as the attached index, the index |
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| 18 | will be redistributed (projected) into size_t space as long as the associated information. |
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| 19 | \param [in] indexInfoMap initial index and information mapping |
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| 20 | \param [in] clientIntraComm communicator of clients |
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| 21 | \param [in] hierarLvl level of hierarchy |
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[720] | 22 | */ |
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[721] | 23 | template<typename T, typename H> |
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| 24 | CClientClientDHTTemplate<T,H>::CClientClientDHTTemplate(const boost::unordered_map<size_t,T>& indexInfoMap, |
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[830] | 25 | const MPI_Comm& clientIntraComm, |
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| 26 | int hierarLvl) |
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[721] | 27 | : index2InfoMapping_(), indexToInfoMappingLevel_() |
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[720] | 28 | { |
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[721] | 29 | this->computeMPICommLevel(clientIntraComm, hierarLvl); |
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| 30 | int lvl = this->commLevel_.size() - 1; |
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| 31 | computeDistributedIndex(indexInfoMap, this->commLevel_[lvl], lvl); |
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[720] | 32 | } |
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| 33 | |
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[721] | 34 | template<typename T, typename H> |
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| 35 | CClientClientDHTTemplate<T,H>::~CClientClientDHTTemplate() |
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[720] | 36 | { |
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| 37 | } |
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| 38 | |
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| 39 | /*! |
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| 40 | Compute mapping between indices and information corresponding to these indices |
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| 41 | \param [in] indices indices a proc has |
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| 42 | */ |
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[721] | 43 | template<typename T, typename H> |
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| 44 | void CClientClientDHTTemplate<T,H>::computeIndexInfoMapping(const CArray<size_t,1>& indices) |
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[720] | 45 | { |
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[721] | 46 | int lvl = this->commLevel_.size() - 1; |
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| 47 | computeIndexInfoMappingLevel(indices, this->commLevel_[lvl], lvl); |
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[720] | 48 | } |
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| 49 | |
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| 50 | /*! |
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| 51 | Compute mapping between indices and information corresponding to these indices |
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| 52 | for each level of hierarchical DHT. Recursive function |
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| 53 | \param [in] indices indices a proc has |
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| 54 | \param [in] commLevel communicator of current level |
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| 55 | \param [in] level current level |
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| 56 | */ |
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[721] | 57 | template<typename T, typename H> |
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| 58 | void CClientClientDHTTemplate<T,H>::computeIndexInfoMappingLevel(const CArray<size_t,1>& indices, |
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| 59 | const MPI_Comm& commLevel, |
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| 60 | int level) |
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[720] | 61 | { |
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| 62 | int nbClient, clientRank; |
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| 63 | MPI_Comm_size(commLevel,&nbClient); |
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| 64 | MPI_Comm_rank(commLevel,&clientRank); |
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| 65 | std::vector<size_t> hashedIndex; |
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| 66 | computeHashIndex(hashedIndex, nbClient); |
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| 67 | |
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| 68 | size_t ssize = indices.numElements(), hashedVal; |
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| 69 | |
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| 70 | std::vector<size_t>::const_iterator itbClientHash = hashedIndex.begin(), itClientHash, |
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| 71 | iteClientHash = hashedIndex.end(); |
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| 72 | std::map<int, std::vector<size_t> > client2ClientIndex; |
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| 73 | |
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| 74 | // Number of global index whose mapping server are on other clients |
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[721] | 75 | int nbIndexToSend = 0; |
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[720] | 76 | HashXIOS<size_t> hashGlobalIndex; |
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| 77 | for (int i = 0; i < ssize; ++i) |
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| 78 | { |
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| 79 | size_t index = indices(i); |
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| 80 | hashedVal = hashGlobalIndex(index); |
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| 81 | itClientHash = std::upper_bound(itbClientHash, iteClientHash, hashedVal); |
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| 82 | if (iteClientHash != itClientHash) |
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| 83 | { |
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| 84 | int indexClient = std::distance(itbClientHash, itClientHash)-1; |
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| 85 | { |
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| 86 | client2ClientIndex[indexClient].push_back(index); |
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[721] | 87 | ++nbIndexToSend; |
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[720] | 88 | } |
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| 89 | } |
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| 90 | } |
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| 91 | |
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| 92 | int* sendBuff = new int[nbClient]; |
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| 93 | for (int i = 0; i < nbClient; ++i) sendBuff[i] = 0; |
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| 94 | std::map<int, std::vector<size_t> >::iterator itb = client2ClientIndex.begin(), it, |
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| 95 | ite = client2ClientIndex.end(); |
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| 96 | for (it = itb; it != ite; ++it) sendBuff[it->first] = 1; |
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| 97 | int* recvBuff = new int[nbClient]; |
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| 98 | MPI_Allreduce(sendBuff, recvBuff, nbClient, MPI_INT, MPI_SUM, commLevel); |
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| 99 | |
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[721] | 100 | std::list<MPI_Request> sendIndexRequest; |
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| 101 | if (0 != nbIndexToSend) |
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[720] | 102 | for (it = itb; it != ite; ++it) |
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[721] | 103 | sendIndexToClients(it->first, it->second, commLevel, sendIndexRequest); |
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[720] | 104 | |
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[721] | 105 | int nbDemandingClient = recvBuff[clientRank], nbSendBuffInfoReceived = 0; |
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[720] | 106 | |
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| 107 | // Receiving demand as well as the responds from other clients |
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| 108 | // The demand message contains global index; meanwhile the responds have server index information |
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| 109 | // Buffer to receive demand from other clients, it can be allocated or not depending whether it has demand(s) |
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[721] | 110 | // There are some cases we demand duplicate index so need to determine maxium size of demanding buffer |
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[720] | 111 | for (it = itb; it != ite; ++it) sendBuff[it->first] = (it->second).size(); |
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| 112 | MPI_Allreduce(sendBuff, recvBuff, nbClient, MPI_INT, MPI_SUM, commLevel); |
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| 113 | |
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| 114 | unsigned long* recvBuffIndex = 0; |
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| 115 | int maxNbIndexDemandedFromOthers = recvBuff[clientRank]; |
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| 116 | |
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| 117 | if (0 != maxNbIndexDemandedFromOthers) |
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| 118 | recvBuffIndex = new unsigned long[maxNbIndexDemandedFromOthers]; |
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| 119 | |
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| 120 | // Buffer to receive respond from other clients, it can be allocated or not depending whether it demands other clients |
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[829] | 121 | // InfoType* recvBuffInfo = 0; |
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| 122 | unsigned char* recvBuffInfo = 0; |
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[721] | 123 | int nbIndexReceivedFromOthers = nbIndexToSend; |
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[720] | 124 | if (0 != nbIndexReceivedFromOthers) |
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[830] | 125 | recvBuffInfo = new unsigned char[nbIndexReceivedFromOthers*ProcessDHTElement<InfoType>::typeSize()]; |
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[720] | 126 | |
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| 127 | std::map<int, MPI_Request>::iterator itRequest; |
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| 128 | std::vector<int> demandAlreadyReceived, repondAlreadyReceived; |
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| 129 | |
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[721] | 130 | int countIndex = 0; // Counting of buffer for receiving index |
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| 131 | std::map<int, MPI_Request> requestRecvIndex; // Request returned by MPI_IRecv function about index |
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[720] | 132 | |
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[721] | 133 | // Mapping client rank and the beginning position of receiving buffer for message of index from this client |
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[720] | 134 | std::map<int, unsigned long*> indexBuffBegin; |
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| 135 | |
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| 136 | std::map<int,std::vector<size_t> > src2Index; // Temporary mapping contains info of demand (source and associate index) in curren level |
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| 137 | |
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| 138 | CArray<size_t,1> tmpGlobalIndexOnClient(maxNbIndexDemandedFromOthers); |
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[721] | 139 | |
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[720] | 140 | int k = 0; |
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[721] | 141 | while ((0 < nbDemandingClient) || (!sendIndexRequest.empty())) |
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[720] | 142 | { |
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| 143 | // Just check whether a client has any demand from other clients. |
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| 144 | // If it has, then it should send responds to these client(s) |
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| 145 | probeIndexMessageFromClients(recvBuffIndex, maxNbIndexDemandedFromOthers, |
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| 146 | countIndex, indexBuffBegin, |
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| 147 | requestRecvIndex, commLevel); |
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| 148 | if (0 < nbDemandingClient) |
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| 149 | { |
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| 150 | for (itRequest = requestRecvIndex.begin(); |
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| 151 | itRequest != requestRecvIndex.end(); ++itRequest) |
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| 152 | { |
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| 153 | int flagIndexGlobal, count; |
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| 154 | MPI_Status statusIndexGlobal; |
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| 155 | |
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| 156 | MPI_Test(&(itRequest->second), &flagIndexGlobal, &statusIndexGlobal); |
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| 157 | if (true == flagIndexGlobal) |
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| 158 | { |
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| 159 | MPI_Get_count(&statusIndexGlobal, MPI_UNSIGNED_LONG, &count); |
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| 160 | int clientSourceRank = statusIndexGlobal.MPI_SOURCE; |
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| 161 | unsigned long* beginBuff = indexBuffBegin[clientSourceRank]; |
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| 162 | for (int i = 0; i < count; ++i) |
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| 163 | { |
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| 164 | src2Index[clientSourceRank].push_back(*(beginBuff+i)); |
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| 165 | tmpGlobalIndexOnClient(k) = *(beginBuff+i); |
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| 166 | ++k; |
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| 167 | } |
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| 168 | --nbDemandingClient; |
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| 169 | |
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| 170 | demandAlreadyReceived.push_back(clientSourceRank); |
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| 171 | } |
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| 172 | } |
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| 173 | for (int i = 0; i< demandAlreadyReceived.size(); ++i) |
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| 174 | requestRecvIndex.erase(demandAlreadyReceived[i]); |
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| 175 | } |
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| 176 | |
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[721] | 177 | testSendRequest(sendIndexRequest); |
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[720] | 178 | } |
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| 179 | |
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| 180 | if (0 < level) |
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| 181 | { |
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| 182 | --level; |
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[721] | 183 | computeIndexInfoMappingLevel(tmpGlobalIndexOnClient, this->commLevel_[level], level); |
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[720] | 184 | } |
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| 185 | else |
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[721] | 186 | indexToInfoMappingLevel_ = index2InfoMapping_; |
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[720] | 187 | |
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[721] | 188 | std::map<int, std::vector<InfoType> > client2ClientInfo; |
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[830] | 189 | std::vector<unsigned char*> infoToSend(src2Index.size()); |
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[720] | 190 | std::list<MPI_Request> sendInfoRequest; |
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[830] | 191 | std::map<int, std::vector<size_t> >::iterator itSrc2Idx = src2Index.begin(), |
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[720] | 192 | iteSrc2Idx = src2Index.end(); |
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[830] | 193 | for (int i=0; itSrc2Idx != iteSrc2Idx; ++itSrc2Idx, ++i) |
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[720] | 194 | { |
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| 195 | int clientSourceRank = itSrc2Idx->first; |
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| 196 | std::vector<size_t>& srcIdx = itSrc2Idx->second; |
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[830] | 197 | infoToSend[i] = new unsigned char [srcIdx.size()*ProcessDHTElement<InfoType>::typeSize()]; |
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| 198 | int infoIndex = 0; |
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[720] | 199 | for (int idx = 0; idx < srcIdx.size(); ++idx) |
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| 200 | { |
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[830] | 201 | ProcessDHTElement<InfoType>::packElement(indexToInfoMappingLevel_[srcIdx[idx]], infoToSend[i], infoIndex); |
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[720] | 202 | } |
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[830] | 203 | sendInfoToClients(clientSourceRank, infoToSend[i], infoIndex, commLevel, sendInfoRequest); |
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[720] | 204 | } |
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| 205 | |
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[721] | 206 | boost::unordered_map<size_t,InfoType> indexToInfoMapping; |
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| 207 | int countInfo = 0; // Counting of buffer for receiving server index |
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[720] | 208 | std::map<int, MPI_Request> requestRecvInfo; |
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| 209 | |
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| 210 | // Mapping client rank and the begining position of receiving buffer for message of server index from this client |
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[829] | 211 | std::map<int, unsigned char*> infoBuffBegin; |
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[720] | 212 | |
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[721] | 213 | while ((!sendInfoRequest.empty()) || (nbSendBuffInfoReceived < nbIndexReceivedFromOthers)) |
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[720] | 214 | { |
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| 215 | testSendRequest(sendInfoRequest); |
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| 216 | |
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| 217 | // In some cases, a client need to listen respond from other clients about server information |
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| 218 | // Ok, with the information, a client can fill in its server-global index map. |
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| 219 | probeInfoMessageFromClients(recvBuffInfo, nbIndexReceivedFromOthers, |
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| 220 | countInfo, infoBuffBegin, |
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| 221 | requestRecvInfo, commLevel); |
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| 222 | for (itRequest = requestRecvInfo.begin(); |
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| 223 | itRequest != requestRecvInfo.end(); |
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| 224 | ++itRequest) |
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| 225 | { |
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| 226 | int flagInfo, count; |
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| 227 | MPI_Status statusInfo; |
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| 228 | |
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| 229 | MPI_Test(&(itRequest->second), &flagInfo, &statusInfo); |
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| 230 | if (true == flagInfo) |
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| 231 | { |
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[829] | 232 | MPI_Get_count(&statusInfo, MPI_CHAR, &count); |
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| 233 | int actualCountInfo = count/infoTypeSize; |
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[720] | 234 | int clientSourceRank = statusInfo.MPI_SOURCE; |
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[829] | 235 | unsigned char* beginBuff = infoBuffBegin[clientSourceRank]; |
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[721] | 236 | std::vector<size_t>& indexTmp = client2ClientIndex[clientSourceRank]; |
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[830] | 237 | int infoIndex = 0; |
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[829] | 238 | for (int i = 0; i < actualCountInfo; ++i) |
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[720] | 239 | { |
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[830] | 240 | ProcessDHTElement<InfoType>::unpackElement(indexToInfoMapping[indexTmp[i]], beginBuff, infoIndex); |
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[720] | 241 | } |
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[829] | 242 | nbSendBuffInfoReceived += actualCountInfo; |
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[720] | 243 | repondAlreadyReceived.push_back(clientSourceRank); |
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| 244 | } |
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| 245 | } |
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| 246 | |
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| 247 | for (int i = 0; i< repondAlreadyReceived.size(); ++i) |
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| 248 | requestRecvInfo.erase(repondAlreadyReceived[i]); |
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| 249 | repondAlreadyReceived.resize(0); |
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| 250 | } |
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| 251 | |
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[829] | 252 | indexToInfoMappingLevel_.swap(indexToInfoMapping); |
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[720] | 253 | if (0 != maxNbIndexDemandedFromOthers) delete [] recvBuffIndex; |
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| 254 | if (0 != nbIndexReceivedFromOthers) delete [] recvBuffInfo; |
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[830] | 255 | for (int idx = 0; idx < infoToSend.size(); ++idx) delete [] infoToSend[idx]; |
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[720] | 256 | delete [] sendBuff; |
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| 257 | delete [] recvBuff; |
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| 258 | } |
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| 259 | |
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| 260 | /*! |
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| 261 | Compute the hash index distribution of whole size_t space then each client will have a range of this distribution |
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| 262 | */ |
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[721] | 263 | template<typename T, typename H> |
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| 264 | void CClientClientDHTTemplate<T,H>::computeHashIndex(std::vector<size_t>& hashedIndex, int nbClient) |
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[720] | 265 | { |
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| 266 | // Compute range of hash index for each client |
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| 267 | hashedIndex.resize(nbClient+1); |
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| 268 | size_t nbHashIndexMax = std::numeric_limits<size_t>::max(); |
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| 269 | size_t nbHashIndex; |
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| 270 | hashedIndex[0] = 0; |
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| 271 | for (int i = 1; i < nbClient; ++i) |
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| 272 | { |
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| 273 | nbHashIndex = nbHashIndexMax / nbClient; |
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| 274 | if (i < (nbHashIndexMax%nbClient)) ++nbHashIndex; |
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| 275 | hashedIndex[i] = hashedIndex[i-1] + nbHashIndex; |
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| 276 | } |
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| 277 | hashedIndex[nbClient] = nbHashIndexMax; |
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| 278 | } |
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| 279 | |
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| 280 | /*! |
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| 281 | Compute distribution of global index for servers |
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| 282 | Each client already holds a piece of information and its attached index. |
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| 283 | This information will be redistributed among processes by projecting indices into size_t space. |
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| 284 | After the redistribution, each client holds rearranged index and its corresponding information. |
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| 285 | \param [in] indexInfoMap index and its corresponding info (usually server index) |
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| 286 | \param [in] commLevel communicator of current level |
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| 287 | \param [in] level current level |
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| 288 | */ |
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[721] | 289 | template<typename T, typename H> |
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| 290 | void CClientClientDHTTemplate<T,H>::computeDistributedIndex(const boost::unordered_map<size_t,T>& indexInfoMap, |
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[829] | 291 | const MPI_Comm& commLevel, |
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| 292 | int level) |
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[720] | 293 | { |
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| 294 | int nbClient, clientRank; |
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| 295 | MPI_Comm_size(commLevel,&nbClient); |
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| 296 | MPI_Comm_rank(commLevel,&clientRank); |
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| 297 | std::vector<size_t> hashedIndex; |
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| 298 | computeHashIndex(hashedIndex, nbClient); |
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| 299 | |
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| 300 | int* sendBuff = new int[nbClient]; |
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| 301 | int* sendNbIndexBuff = new int[nbClient]; |
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| 302 | for (int i = 0; i < nbClient; ++i) |
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| 303 | { |
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| 304 | sendBuff[i] = 0; sendNbIndexBuff[i] = 0; |
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| 305 | } |
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| 306 | |
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| 307 | // Compute size of sending and receving buffer |
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| 308 | std::map<int, std::vector<size_t> > client2ClientIndex; |
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[721] | 309 | std::map<int, std::vector<InfoType> > client2ClientInfo; |
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[720] | 310 | |
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| 311 | std::vector<size_t>::const_iterator itbClientHash = hashedIndex.begin(), itClientHash, |
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| 312 | iteClientHash = hashedIndex.end(); |
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[721] | 313 | typename boost::unordered_map<size_t,InfoType>::const_iterator it = indexInfoMap.begin(), |
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| 314 | ite = indexInfoMap.end(); |
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[720] | 315 | HashXIOS<size_t> hashGlobalIndex; |
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| 316 | for (; it != ite; ++it) |
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| 317 | { |
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| 318 | size_t hashIndex = hashGlobalIndex(it->first); |
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| 319 | itClientHash = std::upper_bound(itbClientHash, iteClientHash, hashIndex); |
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| 320 | if (itClientHash != iteClientHash) |
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| 321 | { |
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| 322 | int indexClient = std::distance(itbClientHash, itClientHash)-1; |
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| 323 | { |
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| 324 | sendBuff[indexClient] = 1; |
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| 325 | ++sendNbIndexBuff[indexClient]; |
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| 326 | client2ClientIndex[indexClient].push_back(it->first); |
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| 327 | client2ClientInfo[indexClient].push_back(it->second); |
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| 328 | } |
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| 329 | } |
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| 330 | } |
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| 331 | |
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| 332 | // Calculate from how many clients each client receive message. |
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| 333 | int* recvBuff = new int[nbClient]; |
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| 334 | MPI_Allreduce(sendBuff, recvBuff, nbClient, MPI_INT, MPI_SUM, commLevel); |
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| 335 | int recvNbClient = recvBuff[clientRank]; |
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| 336 | |
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| 337 | // Calculate size of buffer for receiving message |
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| 338 | int* recvNbIndexBuff = new int[nbClient]; |
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| 339 | MPI_Allreduce(sendNbIndexBuff, recvNbIndexBuff, nbClient, MPI_INT, MPI_SUM, commLevel); |
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| 340 | int recvNbIndexCount = recvNbIndexBuff[clientRank]; |
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| 341 | unsigned long* recvIndexBuff = new unsigned long[recvNbIndexCount]; |
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[830] | 342 | unsigned char* recvInfoBuff = new unsigned char[recvNbIndexCount*ProcessDHTElement<InfoType>::typeSize()]; |
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[720] | 343 | |
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| 344 | // If a client holds information about index and the corresponding which don't belong to it, |
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| 345 | // it will send a message to the correct clients. |
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| 346 | // Contents of the message are index and its corresponding informatioin |
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| 347 | std::list<MPI_Request> sendRequest; |
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| 348 | std::map<int, std::vector<size_t> >::iterator itIndex = client2ClientIndex.begin(), |
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| 349 | iteIndex = client2ClientIndex.end(); |
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| 350 | for (; itIndex != iteIndex; ++itIndex) |
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| 351 | sendIndexToClients(itIndex->first, itIndex->second, commLevel, sendRequest); |
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[830] | 352 | typename std::map<int, std::vector<InfoType> >::iterator itbInfo = client2ClientInfo.begin(), itInfo, |
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[721] | 353 | iteInfo = client2ClientInfo.end(); |
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[720] | 354 | |
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[830] | 355 | std::vector<int> infoSizeToSend(client2ClientInfo.size(),0); |
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| 356 | std::vector<unsigned char*> infoToSend(client2ClientInfo.size()); |
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| 357 | itInfo = itbInfo; |
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| 358 | for (int idx = 0; itInfo != iteInfo; ++itInfo, ++idx) |
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| 359 | { |
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| 360 | const std::vector<InfoType>& infoVec = itInfo->second; |
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| 361 | int infoVecSize = infoVec.size(); |
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| 362 | std::vector<int> infoIndex(infoVecSize); |
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| 363 | for (int i = 0; i < infoVecSize; ++i) |
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| 364 | { |
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| 365 | infoIndex[i] = infoSizeToSend[idx]; |
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| 366 | ProcessDHTElement<InfoType>::packElement(infoVec[i], NULL, infoSizeToSend[idx]); |
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| 367 | } |
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| 368 | |
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| 369 | infoToSend[idx] = new unsigned char[infoSizeToSend[idx]]; |
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| 370 | infoSizeToSend[idx] = 0; |
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| 371 | for (int i = 0; i < infoVecSize; ++i) |
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| 372 | { |
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| 373 | ProcessDHTElement<InfoType>::packElement(infoVec[i], infoToSend[idx], infoSizeToSend[idx]); |
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| 374 | } |
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| 375 | |
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| 376 | sendInfoToClients(itInfo->first, infoToSend[idx], infoSizeToSend[idx], commLevel, sendRequest); |
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| 377 | } |
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| 378 | |
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| 379 | |
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[720] | 380 | std::map<int, MPI_Request>::iterator itRequestIndex, itRequestInfo; |
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| 381 | std::map<int, int> countBuffInfo, countBuffIndex; |
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| 382 | std::vector<int> processedList; |
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| 383 | |
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| 384 | bool isFinished = (0 == recvNbClient) ? true : false; |
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| 385 | |
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| 386 | // Counting of buffer for receiving global index |
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| 387 | int countIndex = 0; |
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| 388 | |
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| 389 | // Counting of buffer for receiving server index |
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| 390 | int countInfo = 0; |
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| 391 | |
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| 392 | // Request returned by MPI_IRecv function about global index |
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| 393 | std::map<int, MPI_Request> requestRecvIndex, requestRecvInfo; |
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| 394 | |
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| 395 | // Mapping client rank and the beginning position of receiving buffer for message of global index from this client |
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| 396 | std::map<int, unsigned long*> indexBuffBegin; |
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| 397 | |
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| 398 | // Mapping client rank and the begining position of receiving buffer for message of server index from this client |
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[829] | 399 | std::map<int, unsigned char*> infoBuffBegin; |
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[720] | 400 | |
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[721] | 401 | boost::unordered_map<size_t,InfoType> indexToInfoMapping; |
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[720] | 402 | |
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| 403 | // Now each client trys to listen to demand from others. |
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| 404 | // If they have message, it processes: pushing global index and corresponding server to its map |
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| 405 | while (!isFinished || (!sendRequest.empty())) |
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| 406 | { |
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| 407 | testSendRequest(sendRequest); |
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| 408 | probeIndexMessageFromClients(recvIndexBuff, recvNbIndexCount, |
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[721] | 409 | countIndex, indexBuffBegin, |
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| 410 | requestRecvIndex, commLevel); |
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[720] | 411 | // Processing complete request |
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| 412 | for (itRequestIndex = requestRecvIndex.begin(); |
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| 413 | itRequestIndex != requestRecvIndex.end(); |
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| 414 | ++itRequestIndex) |
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| 415 | { |
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| 416 | int rank = itRequestIndex->first; |
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[721] | 417 | int count = computeBuffCountIndex(itRequestIndex->second); |
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[720] | 418 | if (0 != count) |
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| 419 | countBuffIndex[rank] = count; |
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| 420 | } |
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| 421 | |
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| 422 | probeInfoMessageFromClients(recvInfoBuff, recvNbIndexCount, |
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[721] | 423 | countInfo, infoBuffBegin, |
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| 424 | requestRecvInfo, commLevel); |
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[720] | 425 | for (itRequestInfo = requestRecvInfo.begin(); |
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| 426 | itRequestInfo != requestRecvInfo.end(); |
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| 427 | ++itRequestInfo) |
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| 428 | { |
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| 429 | int rank = itRequestInfo->first; |
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[721] | 430 | int count = computeBuffCountInfo(itRequestInfo->second); |
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[720] | 431 | if (0 != count) |
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| 432 | countBuffInfo[rank] = count; |
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| 433 | } |
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| 434 | |
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| 435 | for (std::map<int, int>::iterator it = countBuffIndex.begin(); |
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| 436 | it != countBuffIndex.end(); ++it) |
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| 437 | { |
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| 438 | int rank = it->first; |
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| 439 | if ((countBuffInfo.end() != countBuffInfo.find(rank)) && |
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| 440 | (countBuffIndex.end() != countBuffIndex.find(rank))) |
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| 441 | { |
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| 442 | int count = it->second; |
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[830] | 443 | InfoType infoValue; |
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| 444 | int infoIndex = 0; |
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[720] | 445 | for (int i = 0; i < count; ++i) |
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[829] | 446 | { |
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[830] | 447 | ProcessDHTElement<InfoType>::unpackElement(infoValue, infoBuffBegin[rank], infoIndex); |
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| 448 | indexToInfoMapping.insert(std::make_pair<size_t,InfoType>(*(indexBuffBegin[rank]+i),infoValue)); |
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[829] | 449 | } |
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| 450 | |
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[720] | 451 | processedList.push_back(rank); |
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| 452 | --recvNbClient; |
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| 453 | } |
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| 454 | } |
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| 455 | |
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| 456 | for (int i = 0; i < processedList.size(); ++i) |
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| 457 | { |
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| 458 | requestRecvInfo.erase(processedList[i]); |
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| 459 | requestRecvIndex.erase(processedList[i]); |
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| 460 | countBuffIndex.erase(processedList[i]); |
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| 461 | countBuffInfo.erase(processedList[i]); |
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| 462 | } |
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| 463 | |
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| 464 | if (0 == recvNbClient) isFinished = true; |
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| 465 | } |
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| 466 | |
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[830] | 467 | for (int idx = 0; idx < infoToSend.size(); ++idx) delete [] infoToSend[idx]; |
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[720] | 468 | delete [] sendBuff; |
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| 469 | delete [] sendNbIndexBuff; |
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| 470 | delete [] recvBuff; |
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| 471 | delete [] recvNbIndexBuff; |
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| 472 | delete [] recvIndexBuff; |
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| 473 | delete [] recvInfoBuff; |
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| 474 | |
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| 475 | // Ok, now do something recursive |
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| 476 | if (0 < level) |
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| 477 | { |
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| 478 | --level; |
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[721] | 479 | computeDistributedIndex(indexToInfoMapping, this->commLevel_[level], level); |
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[720] | 480 | } |
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| 481 | else |
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[721] | 482 | index2InfoMapping_ = indexToInfoMapping; |
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[720] | 483 | } |
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| 484 | |
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| 485 | /*! |
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| 486 | Probe and receive message containg global index from other clients. |
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| 487 | Each client can send a message of global index to other clients to fulfill their maps. |
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| 488 | 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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| 489 | \param [in] recvIndexBuff buffer dedicated for receiving global index |
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| 490 | \param [in] recvNbIndexCount size of the buffer |
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| 491 | \param [in] countIndex number of received index |
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| 492 | \param [in] indexBuffBegin beginning of index buffer for each source rank |
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| 493 | \param [in] requestRecvIndex request of receving index |
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| 494 | \param [in] intraComm communicator |
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| 495 | */ |
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[721] | 496 | template<typename T, typename H> |
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| 497 | void CClientClientDHTTemplate<T,H>::probeIndexMessageFromClients(unsigned long* recvIndexBuff, |
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[829] | 498 | const int recvNbIndexCount, |
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| 499 | int& countIndex, |
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| 500 | std::map<int, unsigned long*>& indexBuffBegin, |
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| 501 | std::map<int, MPI_Request>& requestRecvIndex, |
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| 502 | const MPI_Comm& intraComm) |
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[720] | 503 | { |
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| 504 | MPI_Status statusIndexGlobal; |
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| 505 | int flagIndexGlobal, count; |
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| 506 | |
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| 507 | // Probing for global index |
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| 508 | MPI_Iprobe(MPI_ANY_SOURCE, MPI_DHT_INDEX, intraComm, &flagIndexGlobal, &statusIndexGlobal); |
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| 509 | if ((true == flagIndexGlobal) && (countIndex < recvNbIndexCount)) |
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| 510 | { |
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| 511 | MPI_Get_count(&statusIndexGlobal, MPI_UNSIGNED_LONG, &count); |
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| 512 | indexBuffBegin.insert(std::make_pair<int, unsigned long*>(statusIndexGlobal.MPI_SOURCE, recvIndexBuff+countIndex)); |
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| 513 | MPI_Irecv(recvIndexBuff+countIndex, count, MPI_UNSIGNED_LONG, |
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| 514 | statusIndexGlobal.MPI_SOURCE, MPI_DHT_INDEX, intraComm, |
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| 515 | &requestRecvIndex[statusIndexGlobal.MPI_SOURCE]); |
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| 516 | countIndex += count; |
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| 517 | } |
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| 518 | } |
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| 519 | |
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| 520 | /*! |
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| 521 | Probe and receive message containg server index from other clients. |
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| 522 | Each client can send a message of server index to other clients to fulfill their maps. |
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| 523 | 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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| 524 | \param [in] recvInfoBuff buffer dedicated for receiving server index |
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| 525 | \param [in] recvNbIndexCount size of the buffer |
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| 526 | \param [in] countInfo number of received info |
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| 527 | \param [in] infoBuffBegin beginning of index buffer for each source rank |
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| 528 | \param [in] requestRecvInfo request of receving index |
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| 529 | \param [in] intraComm communicator |
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| 530 | */ |
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[721] | 531 | template<typename T, typename H> |
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[829] | 532 | void CClientClientDHTTemplate<T,H>::probeInfoMessageFromClients(unsigned char* recvInfoBuff, |
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| 533 | const int recvNbIndexCount, |
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| 534 | int& countInfo, |
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| 535 | std::map<int, unsigned char*>& infoBuffBegin, |
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| 536 | std::map<int, MPI_Request>& requestRecvInfo, |
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| 537 | const MPI_Comm& intraComm) |
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[720] | 538 | { |
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| 539 | MPI_Status statusInfo; |
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| 540 | int flagInfo, count; |
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| 541 | |
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| 542 | // Probing for server index |
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| 543 | MPI_Iprobe(MPI_ANY_SOURCE, MPI_DHT_INFO, intraComm, &flagInfo, &statusInfo); |
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| 544 | if ((true == flagInfo) && (countInfo < recvNbIndexCount)) |
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| 545 | { |
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[721] | 546 | MPI_Get_count(&statusInfo, MPI_CHAR, &count); |
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[829] | 547 | unsigned char* beginInfoBuff = recvInfoBuff+countInfo*infoTypeSize; |
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| 548 | infoBuffBegin.insert(std::make_pair<int, unsigned char*>(statusInfo.MPI_SOURCE, beginInfoBuff)); |
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| 549 | MPI_Irecv(beginInfoBuff, count, MPI_CHAR, |
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[720] | 550 | statusInfo.MPI_SOURCE, MPI_DHT_INFO, intraComm, |
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| 551 | &requestRecvInfo[statusInfo.MPI_SOURCE]); |
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| 552 | |
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[721] | 553 | countInfo += count/infoTypeSize; |
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[720] | 554 | } |
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| 555 | } |
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| 556 | |
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| 557 | /*! |
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| 558 | Send message containing index to clients |
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| 559 | \param [in] clientDestRank rank of destination client |
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| 560 | \param [in] indices index to send |
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| 561 | \param [in] clientIntraComm communication group of client |
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| 562 | \param [in] requestSendIndex list of sending request |
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| 563 | */ |
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[721] | 564 | template<typename T, typename H> |
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| 565 | void CClientClientDHTTemplate<T,H>::sendIndexToClients(int clientDestRank, std::vector<size_t>& indices, |
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[829] | 566 | const MPI_Comm& clientIntraComm, |
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| 567 | std::list<MPI_Request>& requestSendIndex) |
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[720] | 568 | { |
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| 569 | MPI_Request request; |
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| 570 | requestSendIndex.push_back(request); |
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| 571 | MPI_Isend(&(indices)[0], (indices).size(), MPI_UNSIGNED_LONG, |
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| 572 | clientDestRank, MPI_DHT_INDEX, clientIntraComm, &(requestSendIndex.back())); |
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| 573 | } |
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| 574 | |
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| 575 | /*! |
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| 576 | Send message containing information to clients |
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| 577 | \param [in] clientDestRank rank of destination client |
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| 578 | \param [in] info server index to send |
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| 579 | \param [in] clientIntraComm communication group of client |
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| 580 | \param [in] requestSendInfo list of sending request |
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| 581 | */ |
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[721] | 582 | template<typename T, typename H> |
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[830] | 583 | void CClientClientDHTTemplate<T,H>::sendInfoToClients(int clientDestRank, unsigned char* info, int infoSize, |
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| 584 | const MPI_Comm& clientIntraComm, std::list<MPI_Request>& requestSendInfo) |
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[720] | 585 | { |
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| 586 | MPI_Request request; |
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| 587 | requestSendInfo.push_back(request); |
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[721] | 588 | |
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[830] | 589 | MPI_Isend(info, infoSize, MPI_CHAR, |
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[720] | 590 | clientDestRank, MPI_DHT_INFO, clientIntraComm, &(requestSendInfo.back())); |
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| 591 | } |
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| 592 | |
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| 593 | /*! |
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| 594 | Verify status of sending request |
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| 595 | \param [in] sendRequest sending request to verify |
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| 596 | */ |
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[721] | 597 | template<typename T, typename H> |
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| 598 | void CClientClientDHTTemplate<T,H>::testSendRequest(std::list<MPI_Request>& sendRequest) |
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[720] | 599 | { |
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| 600 | int flag = 0; |
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| 601 | MPI_Status status; |
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| 602 | std::list<MPI_Request>::iterator itRequest; |
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| 603 | int sizeListRequest = sendRequest.size(); |
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| 604 | int idx = 0; |
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| 605 | while (idx < sizeListRequest) |
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| 606 | { |
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| 607 | bool isErased = false; |
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| 608 | for (itRequest = sendRequest.begin(); itRequest != sendRequest.end(); ++itRequest) |
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| 609 | { |
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| 610 | MPI_Test(&(*itRequest), &flag, &status); |
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| 611 | if (true == flag) |
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| 612 | { |
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| 613 | isErased = true; |
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| 614 | break; |
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| 615 | } |
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| 616 | } |
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| 617 | if (true == isErased) sendRequest.erase(itRequest); |
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| 618 | ++idx; |
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| 619 | } |
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| 620 | } |
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| 621 | |
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| 622 | /*! |
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| 623 | Compute size of message containing global index |
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| 624 | \param[in] requestRecv request of message |
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| 625 | */ |
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[721] | 626 | template<typename T, typename H> |
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| 627 | int CClientClientDHTTemplate<T,H>::computeBuffCountIndex(MPI_Request& requestRecv) |
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[720] | 628 | { |
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| 629 | int flag, count = 0; |
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| 630 | MPI_Status status; |
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| 631 | |
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| 632 | MPI_Test(&requestRecv, &flag, &status); |
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| 633 | if (true == flag) |
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| 634 | { |
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| 635 | MPI_Get_count(&status, MPI_UNSIGNED_LONG, &count); |
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| 636 | } |
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| 637 | |
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| 638 | return count; |
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| 639 | } |
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| 640 | |
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| 641 | /*! |
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| 642 | Compute size of message containing server index |
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| 643 | \param[in] requestRecv request of message |
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| 644 | */ |
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[721] | 645 | template<typename T, typename H> |
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| 646 | int CClientClientDHTTemplate<T,H>::computeBuffCountInfo(MPI_Request& requestRecv) |
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[720] | 647 | { |
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| 648 | int flag, count = 0; |
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| 649 | MPI_Status status; |
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| 650 | |
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| 651 | MPI_Test(&requestRecv, &flag, &status); |
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| 652 | if (true == flag) |
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| 653 | { |
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[721] | 654 | MPI_Get_count(&status, MPI_CHAR, &count); |
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[720] | 655 | } |
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| 656 | |
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[721] | 657 | return (count/infoTypeSize); |
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[720] | 658 | } |
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| 659 | |
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| 660 | } |
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