1 | /*! |
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2 | \file ep_recv.cpp |
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3 | \since 2 may 2016 |
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4 | |
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5 | \brief Definitions of MPI receive functions: MPI_Recv, MPI_Mrecv, MPI_Irecv, MPI_Imrecv |
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6 | */ |
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7 | |
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8 | |
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9 | #include "ep_lib.hpp" |
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10 | #include <mpi.h> |
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11 | #include "ep_declaration.hpp" |
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12 | |
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13 | using namespace std; |
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14 | |
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15 | |
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16 | namespace ep_lib { |
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17 | |
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18 | int MPI_Recv(void *buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm, MPI_Status *status) |
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19 | { |
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20 | int dest_rank; |
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21 | MPI_Comm_rank(comm, &dest_rank); |
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22 | |
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23 | if(!comm.is_ep) |
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24 | { |
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25 | ::MPI_Comm mpi_comm = static_cast< ::MPI_Comm >(comm.mpi_comm); |
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26 | ::MPI_Status mpi_status; |
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27 | ::MPI_Recv(buf, count, static_cast< ::MPI_Datatype >(datatype), src, tag, mpi_comm, &mpi_status); |
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28 | |
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29 | status->ep_src = src; |
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30 | status->ep_tag = tag; |
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31 | status->ep_datatype = datatype; |
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32 | |
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33 | return 0; |
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34 | } |
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35 | |
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36 | Message_Check(comm); |
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37 | |
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38 | MPI_Request request; |
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39 | MPI_Irecv(buf, count, datatype, src, tag, comm, &request); |
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40 | MPI_Wait(&request, status); |
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41 | |
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42 | return 0; |
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43 | } |
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44 | |
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45 | |
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46 | |
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47 | |
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48 | int MPI_Irecv(void *buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm, MPI_Request *request) |
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49 | { |
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50 | |
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51 | Debug("MPI_Irecv with EP"); |
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52 | int dest_rank; |
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53 | MPI_Comm_rank(comm, &dest_rank); |
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54 | |
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55 | if(!comm.is_ep) |
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56 | { |
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57 | ::MPI_Request mpi_request; |
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58 | ::MPI_Comm mpi_comm = static_cast< ::MPI_Comm > (comm.mpi_comm); |
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59 | ::MPI_Irecv(buf, count, static_cast< ::MPI_Datatype> (datatype), src, tag, mpi_comm, &mpi_request); |
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60 | |
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61 | request->mpi_request = mpi_request; |
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62 | request->ep_src = src; |
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63 | request->ep_datatype = datatype; |
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64 | request->ep_tag = tag; |
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65 | } |
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66 | |
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67 | Message_Check(comm); |
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68 | |
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69 | |
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70 | request->mpi_request = NULL; |
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71 | request->buf = buf; |
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72 | request->comm = comm; |
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73 | request->type = 2; |
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74 | |
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75 | request->ep_src = src; |
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76 | request->ep_tag = tag; |
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77 | request->ep_datatype = datatype; |
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78 | |
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79 | |
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80 | |
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81 | /* With Improbe*/ |
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82 | Message_Check(comm); |
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83 | |
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84 | int flag = false; |
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85 | MPI_Message message; |
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86 | MPI_Status status; |
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87 | |
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88 | MPI_Improbe(src, tag, comm, &flag, &message, &status); |
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89 | |
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90 | if(flag) |
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91 | { |
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92 | MPI_Imrecv(buf, count, datatype, &message, request); |
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93 | } |
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94 | |
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95 | return 0; |
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96 | } |
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97 | |
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98 | int MPI_Imrecv(void *buf, int count, MPI_Datatype datatype, MPI_Message *message, MPI_Request *request) |
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99 | { |
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100 | Debug("MPI_Imrecv"); |
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101 | |
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102 | request->type = 3; |
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103 | |
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104 | ::MPI_Request mpi_request; |
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105 | ::MPI_Message mpi_message = static_cast< ::MPI_Message >(message->mpi_message); |
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106 | |
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107 | ::MPI_Imrecv(buf, count, static_cast< ::MPI_Datatype>(datatype), &mpi_message, &mpi_request); |
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108 | |
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109 | request->mpi_request = mpi_request; |
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110 | request->ep_datatype = datatype; |
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111 | request->ep_tag = message->ep_tag; |
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112 | request->ep_src = message->ep_src; |
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113 | request->buf = buf; |
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114 | |
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115 | return 0; |
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116 | } |
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117 | |
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118 | |
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119 | int MPI_Mrecv(void *buf, int count, MPI_Datatype datatype, MPI_Message *message, MPI_Status *status) |
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120 | { |
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121 | Debug("EP Mrecv called\n"); |
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122 | |
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123 | ::MPI_Status mpi_status; |
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124 | ::MPI_Message mpi_message = static_cast< ::MPI_Message >(message->mpi_message); |
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125 | |
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126 | ::MPI_Mrecv(buf, count, static_cast< ::MPI_Datatype>(datatype), &mpi_message, &mpi_status); |
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127 | |
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128 | status->mpi_status = new ::MPI_Status(mpi_status); |
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129 | status->ep_src = message->ep_src; |
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130 | status->ep_datatype = datatype; |
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131 | status->ep_tag = message->ep_tag; |
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132 | |
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133 | //check_sum_recv(buf, count, datatype, message->ep_src, message->ep_tag); |
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134 | |
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135 | return 0; |
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136 | } |
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137 | |
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138 | |
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139 | |
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140 | |
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141 | } |
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