[721] | 1 | /*! |
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| 2 | \file client_client_dht_template.hpp |
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| 3 | \author Ha NGUYEN |
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| 4 | \since 01 Oct 2015 |
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[839] | 5 | \date 15 April 2016 |
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[721] | 6 | |
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| 7 | \brief Distributed hashed table implementation. |
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| 8 | */ |
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| 9 | |
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| 10 | #ifndef __XIOS_CLIENT_CLIENT_DHT_TEMPLATE_HPP__ |
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| 11 | #define __XIOS_CLIENT_CLIENT_DHT_TEMPLATE_HPP__ |
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| 12 | |
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| 13 | #include "xios_spl.hpp" |
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| 14 | #include "array_new.hpp" |
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| 15 | #include "mpi.hpp" |
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| 16 | #include "policy.hpp" |
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| 17 | #include <boost/unordered_map.hpp> |
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[829] | 18 | #include "dht_data_types.hpp" |
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[721] | 19 | |
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| 20 | namespace xios |
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| 21 | { |
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[833] | 22 | template<typename T, class HierarchyPolicy = DivideAdaptiveComm> class CClientClientDHTTemplate; |
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[721] | 23 | |
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| 24 | /*! |
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| 25 | \class CClientClientDHTTemplate |
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| 26 | This class provides the similar features like \class CClientServerMappingDistributed, |
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| 27 | which implements a simple distributed hashed table; Moreover, by extending with hierarchical structure, |
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| 28 | it allows to reduce greatly the number of communication among processes. |
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| 29 | */ |
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| 30 | template<typename T, typename HierarchyPolicy> |
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| 31 | class CClientClientDHTTemplate: public HierarchyPolicy |
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| 32 | { |
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| 33 | public: |
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| 34 | typedef T InfoType; |
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[727] | 35 | static const int infoTypeSize = sizeof(InfoType); |
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[829] | 36 | typedef typename boost::unordered_map<InfoType, std::vector<size_t> > InfoType2IndexMap; |
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| 37 | typedef typename boost::unordered_map<size_t,InfoType> Index2InfoTypeMap; |
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[721] | 38 | |
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| 39 | public: |
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[829] | 40 | CClientClientDHTTemplate(const Index2InfoTypeMap& indexInfoInitMap, |
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[835] | 41 | const MPI_Comm& clientIntraComm); |
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[721] | 42 | |
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| 43 | void computeIndexInfoMapping(const CArray<size_t,1>& indices); |
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| 44 | |
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[830] | 45 | const Index2InfoTypeMap& getInfoIndexMap() const {return indexToInfoMappingLevel_; } |
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[721] | 46 | |
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[843] | 47 | int getNbClient() { return nbClient_; } |
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| 48 | |
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[721] | 49 | /** Default destructor */ |
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| 50 | virtual ~CClientClientDHTTemplate(); |
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| 51 | |
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| 52 | protected: |
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| 53 | // Redistribute index and info among clients |
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[829] | 54 | void computeDistributedIndex(const Index2InfoTypeMap& indexInfoInitMap, |
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[721] | 55 | const MPI_Comm& intraCommLevel, |
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| 56 | int level); |
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| 57 | |
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| 58 | void computeHashIndex(std::vector<size_t>& indexClientHash, int nbClient); |
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| 59 | |
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| 60 | void computeIndexInfoMappingLevel(const CArray<size_t,1>& indices, |
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| 61 | const MPI_Comm& intraCommLevel, |
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| 62 | int level); |
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| 63 | |
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[833] | 64 | void computeSendRecvRank(int level, int rank); |
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| 65 | |
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| 66 | void sendRecvRank(int level, |
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| 67 | const std::vector<int>& sendNbRank, const std::vector<int>& sendNbElements, |
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[839] | 68 | std::vector<int>& recvNbRank, std::vector<int>& recvNbElements); |
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[833] | 69 | |
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[721] | 70 | protected: |
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[830] | 71 | // Send information to clients |
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| 72 | void sendInfoToClients(int clientDestRank, unsigned char* info, int infoSize, |
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[839] | 73 | const MPI_Comm& clientIntraComm, |
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| 74 | std::vector<MPI_Request>& requestSendInfo); |
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[721] | 75 | |
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[839] | 76 | void recvInfoFromClients(int clientSrcRank, unsigned char* info, int infoSize, |
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| 77 | const MPI_Comm& clientIntraComm, |
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| 78 | std::vector<MPI_Request>& requestRecvInfo); |
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| 79 | |
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[721] | 80 | // Send global index to clients |
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[833] | 81 | void sendIndexToClients(int clientDestRank, size_t* indices, size_t indiceSize, |
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[839] | 82 | const MPI_Comm& clientIntraComm, |
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| 83 | std::vector<MPI_Request>& requestSendIndexGlobal); |
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[721] | 84 | |
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[839] | 85 | void recvIndexFromClients(int clientSrcRank, size_t* indices, size_t indiceSize, |
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| 86 | const MPI_Comm& clientIntraComm, |
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| 87 | std::vector<MPI_Request>& requestRecvIndex); |
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[721] | 88 | |
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[839] | 89 | void sendRecvOnReturn(const std::vector<int>& sendNbRank, std::vector<int>& sendNbElements, |
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| 90 | const std::vector<int>& recvNbRank, std::vector<int>& recvNbElements); |
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[721] | 91 | |
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| 92 | protected: |
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| 93 | //! Mapping of global index to the corresponding client |
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[829] | 94 | Index2InfoTypeMap index2InfoMapping_; |
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[721] | 95 | |
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[830] | 96 | //! A mapping of index to the corresponding information in each level of hierarchy |
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[829] | 97 | Index2InfoTypeMap indexToInfoMappingLevel_; |
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[721] | 98 | |
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[833] | 99 | std::vector<std::vector<int> > sendRank_; |
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[721] | 100 | |
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[833] | 101 | std::vector<std::vector<int> > recvRank_; |
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| 102 | |
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[721] | 103 | //! Flag to specify whether data is distributed or not |
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| 104 | bool isDataDistributed_; |
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[843] | 105 | |
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| 106 | //! Number of client |
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| 107 | int nbClient_; |
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[721] | 108 | }; |
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| 109 | |
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| 110 | typedef CClientClientDHTTemplate<int> CClientClientDHTInt; |
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[829] | 111 | typedef CClientClientDHTTemplate<PairIntInt> CClientClientDHTPairIntInt; |
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[721] | 112 | |
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| 113 | } // namespace xios |
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| 114 | #endif // __XIOS_CLIENT_CLIENT_DHT_TEMPLATE_HPP__ |
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