1 | #ifndef __SCATTERER_CONNECTOR_HPP__ |
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2 | #define __SCATTERER_CONNECTOR_HPP__ |
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3 | |
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4 | #include "xios_spl.hpp" |
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5 | #include "array_new.hpp" |
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6 | #include "distributed_view.hpp" |
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7 | #include "mpi.hpp" |
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8 | #include "local_view.hpp" |
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9 | #include "distributed_view.hpp" |
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10 | #include "context_client.hpp" |
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11 | |
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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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16 | class CScattererConnector |
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17 | { |
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18 | |
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19 | private: |
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20 | map<int, vector<int>> connector_ ; |
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21 | map<int, vector<bool>> mask_ ; // mask is on dst view |
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22 | MPI_Comm localComm_ ; |
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23 | |
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24 | CLocalView* srcView_ ; |
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25 | CDistributedView* dstView_ ; |
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26 | map<int,int> nbSenders_ ; // number of participant when sending remote buffer |
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27 | int srcSize_ ; |
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28 | map<int,int> dstSize_ ; |
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29 | |
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30 | public: |
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31 | |
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32 | CScattererConnector(CLocalView* srcView, CDistributedView* dstView, MPI_Comm localComm) |
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33 | : srcView_(srcView), dstView_(dstView), localComm_(localComm) {} |
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34 | void computeConnector(void) ; |
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35 | |
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36 | template<typename T> |
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37 | void transfer(const CArray<T,1>& dataIn, map<int, CArray<T,1>>& dataOut) |
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38 | { |
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39 | for(auto& rankConnector : connector_) |
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40 | { |
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41 | int rank = rankConnector.first ; |
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42 | auto& connector = rankConnector.second ; |
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43 | auto& mask = mask_[rank] ; |
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44 | int dstSize = mask.size() ; |
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45 | auto& data = dataOut[rank] ; |
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46 | data.resize(dstSize) ; |
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47 | T* dstData = data.dataFirst() ; |
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48 | const T* srcData = dataIn.dataFirst() ; |
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49 | for(int i=0, j=0; i<dstSize; i++) |
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50 | if (mask[i]) |
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51 | { |
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52 | dstData[i] = srcData[connector[j]] ; |
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53 | j++ ; |
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54 | } |
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55 | } |
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56 | } |
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57 | |
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58 | template<typename T> |
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59 | void transfer(const CArray<T,1>& dataIn, CContextClient* client, CEventClient& event, const CMessage& messageHeader) |
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60 | { |
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61 | map<int, CArray<T,1>> dataOut ; |
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62 | transfer(dataIn, dataOut) ; |
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63 | sendToServer(dataOut, client, event, messageHeader) ; |
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64 | } |
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65 | |
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66 | template<typename T> |
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67 | void transfer(int rank, CScattererConnector** connectors, int nConnectors, const T* input, T* output) |
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68 | { |
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69 | auto& connector = connector_[rank] ; // probably costly, find a better way to avoid the map |
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70 | auto& mask = mask_[rank] ; |
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71 | int dstSize = mask.size() ; |
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72 | if (nConnectors==0) |
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73 | { |
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74 | for(int i=0, j=0; i<dstSize; i++) |
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75 | if (mask[i]) |
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76 | { |
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77 | *(output+i)=*(input+connector[j]) ; |
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78 | j++ ; |
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79 | } |
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80 | |
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81 | } |
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82 | else |
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83 | { |
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84 | int srcSliceSize = (*(connectors-1))->getSrcSliceSize(connectors-1, nConnectors-1) ; |
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85 | int dstSliceSize = (*(connectors-1))->getDstSliceSize(rank, connectors-1, nConnectors-1) ; |
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86 | |
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87 | T* out = output ; |
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88 | for(int i=0,j=0;i<dstSize;i++) |
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89 | { |
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90 | if (mask[i]) |
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91 | { |
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92 | (*(connectors-1))->transfer(rank, connectors-1, nConnectors-1, input+connector[j]*srcSliceSize, out) ; // the multiplication must be avoid in further optimization |
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93 | j++ ; |
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94 | } |
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95 | out += dstSliceSize ; |
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96 | } |
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97 | } |
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98 | } |
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99 | |
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100 | |
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101 | template<typename T> |
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102 | void sendToServer(const map<int, CArray<T,1>>& dataOut, CContextClient* client, CEventClient& event, const CMessage& messageHeader) |
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103 | { |
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104 | list<CMessage> messages; |
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105 | for(auto ranksData : dataOut) |
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106 | { |
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107 | int rank = ranksData.first ; |
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108 | auto& data = ranksData.second ; |
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109 | |
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110 | messages.push_back(CMessage(messageHeader)); |
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111 | messages.back().push(data) ; |
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112 | event.push(rank, nbSenders_[rank], messages.back()); |
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113 | } |
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114 | client->sendEvent(event) ; |
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115 | } |
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116 | |
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117 | int getSrcSliceSize(CScattererConnector** connectors, int nConnectors) |
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118 | { if (nConnectors==0) return srcSize_ ; else return srcSize_ * (*(connectors-1))->getSrcSliceSize(connectors-1,nConnectors-1) ; } |
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119 | |
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120 | int getDstSliceSize(int rank, CScattererConnector** connectors, int nConnectors) |
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121 | { if (nConnectors==0) return dstSize_[rank] ; else return dstSize_[rank] * (*(connectors-1))->getDstSliceSize(rank, connectors-1,nConnectors-1) ; } |
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122 | |
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123 | const map<int,int>& getNbSenders(void) {return nbSenders_ ;} |
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124 | const map<int,int>& getDstSize(void) { return dstSize_ ;} |
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125 | } ; |
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126 | } |
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127 | |
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128 | #endif |
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