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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5 | \date 15 April 2016 |
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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 <unordered_map> |
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18 | #include "dht_data_types.hpp" |
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19 | |
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20 | namespace xios |
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21 | { |
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22 | template<typename T, class HierarchyPolicy = DivideAdaptiveComm> class CClientClientDHTTemplate; |
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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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35 | static const int infoTypeSize = sizeof(InfoType); |
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36 | // typedef typename std::unordered_map<InfoType, std::vector<size_t> > InfoType2IndexMap; |
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37 | typedef typename std::unordered_map<size_t,InfoType> Index2InfoTypeMap; |
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38 | typedef typename std::unordered_map<size_t,std::vector<InfoType> > Index2VectorInfoTypeMap; |
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39 | |
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40 | public: |
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41 | CClientClientDHTTemplate(const Index2InfoTypeMap& indexInfoInitMap, |
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42 | const MPI_Comm& clientIntraComm); |
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43 | |
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44 | CClientClientDHTTemplate(const Index2VectorInfoTypeMap& indexInfoInitMap, |
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45 | const MPI_Comm& clientIntraComm); |
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46 | |
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47 | void computeIndexInfoMapping(const CArray<size_t,1>& indices); |
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48 | |
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49 | const Index2VectorInfoTypeMap& getInfoIndexMap() const {return indexToInfoMappingLevel_; } |
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50 | Index2VectorInfoTypeMap& getInfoIndexMap() {return indexToInfoMappingLevel_; } |
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51 | int getNbClient() { return nbClient_; } |
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52 | |
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53 | /** Default destructor */ |
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54 | virtual ~CClientClientDHTTemplate(); |
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55 | |
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56 | protected: |
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57 | CClientClientDHTTemplate(const MPI_Comm& clientIntraComm); |
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58 | |
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59 | protected: |
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60 | |
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61 | |
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62 | // Redistribute index and info among clients |
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63 | void computeDistributedIndex(const Index2InfoTypeMap& indexInfoInitMap, |
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64 | const MPI_Comm& intraCommLevel, |
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65 | int level); |
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66 | |
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67 | void computeDistributedIndex(const Index2VectorInfoTypeMap& indexInfoInitMap, |
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68 | const MPI_Comm& intraCommLevel, |
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69 | int level); |
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70 | |
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71 | |
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72 | void computeHashIndex(std::vector<size_t>& indexClientHash, int nbClient); |
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73 | |
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74 | void computeIndexInfoMappingLevel(const CArray<size_t,1>& indices, |
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75 | const MPI_Comm& intraCommLevel, |
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76 | int level); |
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77 | |
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78 | void computeSendRecvRank(int level, int rank); |
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79 | |
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80 | void sendRecvRank(int level, |
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81 | const std::vector<int>& sendNbRank, const std::vector<int>& sendNbElements, |
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82 | std::vector<int>& recvNbRank, std::vector<int>& recvNbElements); |
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83 | |
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84 | protected: |
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85 | // Send information to clients |
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86 | void sendInfoToClients(int clientDestRank, unsigned char* info, int infoSize, |
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87 | const MPI_Comm& clientIntraComm, |
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88 | std::vector<MPI_Request>& requestSendInfo); |
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89 | |
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90 | void recvInfoFromClients(int clientSrcRank, unsigned char* info, int infoSize, |
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91 | const MPI_Comm& clientIntraComm, |
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92 | std::vector<MPI_Request>& requestRecvInfo); |
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93 | |
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94 | // Send global index to clients |
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95 | void sendIndexToClients(int clientDestRank, size_t* indices, size_t indiceSize, |
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96 | const MPI_Comm& clientIntraComm, |
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97 | std::vector<MPI_Request>& requestSendIndexGlobal); |
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98 | |
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99 | void recvIndexFromClients(int clientSrcRank, size_t* indices, size_t indiceSize, |
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100 | const MPI_Comm& clientIntraComm, |
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101 | std::vector<MPI_Request>& requestRecvIndex); |
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102 | |
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103 | void sendRecvOnReturn(const std::vector<int>& sendNbRank, std::vector<int>& sendNbElements, |
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104 | const std::vector<int>& recvNbRank, std::vector<int>& recvNbElements); |
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105 | |
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106 | protected: |
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107 | //! Mapping of global index to the corresponding client |
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108 | Index2VectorInfoTypeMap index2InfoMapping_; |
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109 | |
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110 | //! A mapping of index to the corresponding information in each level of hierarchy |
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111 | Index2VectorInfoTypeMap indexToInfoMappingLevel_; |
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112 | |
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113 | //! Rank of client to send on each DHT level |
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114 | std::vector<std::vector<int> > sendRank_; |
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115 | |
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116 | //! Rank of client to receive on each DHT level |
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117 | std::vector<std::vector<int> > recvRank_; |
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118 | |
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119 | //! Flag to specify whether data is distributed or not |
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120 | bool isDataDistributed_; |
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121 | |
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122 | //! Number of client |
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123 | int nbClient_; |
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124 | }; |
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125 | |
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126 | typedef CClientClientDHTTemplate<int> CClientClientDHTInt; |
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127 | typedef CClientClientDHTTemplate<size_t> CClientClientDHTSizet; |
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128 | typedef CClientClientDHTTemplate<double> CClientClientDHTDouble; |
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129 | typedef CClientClientDHTTemplate<PairIntInt> CClientClientDHTPairIntInt; |
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130 | |
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131 | } // namespace xios |
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132 | #endif // __XIOS_CLIENT_CLIENT_DHT_TEMPLATE_HPP__ |
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