[1134] | 1 | /*! |
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| 2 | \file ep_gather.cpp |
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| 3 | \since 2 may 2016 |
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| 4 | |
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| 5 | \brief Definitions of MPI collective function: MPI_Scatterv |
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| 6 | */ |
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| 7 | |
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| 8 | #include "ep_lib.hpp" |
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| 9 | #include <mpi.h> |
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| 10 | #include "ep_declaration.hpp" |
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| 11 | |
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| 12 | using namespace std; |
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| 13 | |
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| 14 | namespace ep_lib |
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| 15 | { |
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| 16 | |
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| 17 | int MPI_Scatterv_local(const void *sendbuf, const int sendcounts[], const int displs[], MPI_Datatype datatype, void *recvbuf, MPI_Comm comm) |
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| 18 | { |
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| 19 | if(datatype == MPI_INT) |
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| 20 | { |
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| 21 | Debug("datatype is INT\n"); |
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| 22 | return MPI_Scatterv_local_int(sendbuf, sendcounts, displs, recvbuf, comm); |
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| 23 | } |
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| 24 | else if(datatype == MPI_FLOAT) |
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| 25 | { |
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| 26 | Debug("datatype is FLOAT\n"); |
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| 27 | return MPI_Scatterv_local_float(sendbuf, sendcounts, displs, recvbuf, comm); |
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| 28 | } |
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| 29 | else if(datatype == MPI_DOUBLE) |
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| 30 | { |
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| 31 | Debug("datatype is DOUBLE\n"); |
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| 32 | return MPI_Scatterv_local_double(sendbuf, sendcounts, displs, recvbuf, comm); |
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| 33 | } |
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| 34 | else if(datatype == MPI_LONG) |
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| 35 | { |
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| 36 | Debug("datatype is LONG\n"); |
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| 37 | return MPI_Scatterv_local_long(sendbuf, sendcounts, displs, recvbuf, comm); |
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| 38 | } |
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| 39 | else if(datatype == MPI_UNSIGNED_LONG) |
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| 40 | { |
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| 41 | Debug("datatype is uLONG\n"); |
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| 42 | return MPI_Scatterv_local_ulong(sendbuf, sendcounts, displs, recvbuf, comm); |
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| 43 | } |
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| 44 | else if(datatype == MPI_CHAR) |
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| 45 | { |
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| 46 | Debug("datatype is CHAR\n"); |
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| 47 | return MPI_Scatterv_local_char(sendbuf, sendcounts, displs, recvbuf, comm); |
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| 48 | } |
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| 49 | else |
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| 50 | { |
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| 51 | printf("MPI_scatterv Datatype not supported!\n"); |
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| 52 | exit(0); |
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| 53 | } |
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| 54 | } |
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| 55 | |
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| 56 | int MPI_Scatterv_local_int(const void *sendbuf, const int sendcounts[], const int displs[], void *recvbuf, MPI_Comm comm) |
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| 57 | { |
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| 58 | int my_rank = comm.ep_comm_ptr->size_rank_info[1].first; |
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| 59 | int num_ep = comm.ep_comm_ptr->size_rank_info[1].second; |
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| 60 | |
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| 61 | |
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| 62 | int *buffer = comm.my_buffer->buf_int; |
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| 63 | int *send_buf = static_cast<int*>(const_cast<void*>(sendbuf)); |
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| 64 | int *recv_buf = static_cast<int*>(recvbuf); |
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| 65 | |
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| 66 | for(int k=0; k<num_ep; k++) |
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| 67 | { |
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| 68 | int count = sendcounts[k]; |
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| 69 | for(int j=0; j<count; j+=BUFFER_SIZE) |
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| 70 | { |
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| 71 | if(my_rank == 0) |
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| 72 | { |
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| 73 | #pragma omp critical (write_to_buffer) |
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| 74 | { |
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| 75 | copy(send_buf+displs[k]+j, send_buf+displs[k]+j+min(BUFFER_SIZE, count-j), buffer); |
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| 76 | #pragma omp flush |
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| 77 | } |
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| 78 | } |
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| 79 | |
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| 80 | MPI_Barrier_local(comm); |
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| 81 | |
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| 82 | if(my_rank == k) |
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| 83 | { |
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| 84 | #pragma omp critical (read_from_buffer) |
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| 85 | { |
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| 86 | #pragma omp flush |
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| 87 | copy(buffer, buffer+min(BUFFER_SIZE, count-j), recv_buf+j); |
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| 88 | } |
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| 89 | } |
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| 90 | MPI_Barrier_local(comm); |
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| 91 | } |
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| 92 | } |
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| 93 | } |
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| 94 | |
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| 95 | int MPI_Scatterv_local_float(const void *sendbuf, const int sendcounts[], const int displs[], void *recvbuf, MPI_Comm comm) |
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| 96 | { |
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| 97 | int my_rank = comm.ep_comm_ptr->size_rank_info[1].first; |
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| 98 | int num_ep = comm.ep_comm_ptr->size_rank_info[1].second; |
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| 99 | |
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| 100 | |
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| 101 | float *buffer = comm.my_buffer->buf_float; |
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| 102 | float *send_buf = static_cast<float*>(const_cast<void*>(sendbuf)); |
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| 103 | float *recv_buf = static_cast<float*>(recvbuf); |
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| 104 | |
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| 105 | for(int k=0; k<num_ep; k++) |
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| 106 | { |
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| 107 | int count = sendcounts[k]; |
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| 108 | for(int j=0; j<count; j+=BUFFER_SIZE) |
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| 109 | { |
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| 110 | if(my_rank == 0) |
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| 111 | { |
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| 112 | #pragma omp critical (write_to_buffer) |
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| 113 | { |
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| 114 | copy(send_buf+displs[k]+j, send_buf+displs[k]+j+min(BUFFER_SIZE, count-j), buffer); |
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| 115 | #pragma omp flush |
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| 116 | } |
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| 117 | } |
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| 118 | |
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| 119 | MPI_Barrier_local(comm); |
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| 120 | |
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| 121 | if(my_rank == k) |
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| 122 | { |
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| 123 | #pragma omp critical (read_from_buffer) |
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| 124 | { |
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| 125 | #pragma omp flush |
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| 126 | copy(buffer, buffer+min(BUFFER_SIZE, count-j), recv_buf+j); |
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| 127 | } |
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| 128 | } |
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| 129 | MPI_Barrier_local(comm); |
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| 130 | } |
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| 131 | } |
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| 132 | } |
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| 133 | |
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| 134 | int MPI_Scatterv_local_double(const void *sendbuf, const int sendcounts[], const int displs[], void *recvbuf, MPI_Comm comm) |
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| 135 | { |
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| 136 | int my_rank = comm.ep_comm_ptr->size_rank_info[1].first; |
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| 137 | int num_ep = comm.ep_comm_ptr->size_rank_info[1].second; |
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| 138 | |
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| 139 | |
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| 140 | double *buffer = comm.my_buffer->buf_double; |
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| 141 | double *send_buf = static_cast<double*>(const_cast<void*>(sendbuf)); |
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| 142 | double *recv_buf = static_cast<double*>(recvbuf); |
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| 143 | |
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| 144 | for(int k=0; k<num_ep; k++) |
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| 145 | { |
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| 146 | int count = sendcounts[k]; |
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| 147 | for(int j=0; j<count; j+=BUFFER_SIZE) |
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| 148 | { |
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| 149 | if(my_rank == 0) |
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| 150 | { |
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| 151 | #pragma omp critical (write_to_buffer) |
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| 152 | { |
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| 153 | copy(send_buf+displs[k]+j, send_buf+displs[k]+j+min(BUFFER_SIZE, count-j), buffer); |
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| 154 | #pragma omp flush |
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| 155 | } |
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| 156 | } |
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| 157 | |
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| 158 | MPI_Barrier_local(comm); |
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| 159 | |
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| 160 | if(my_rank == k) |
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| 161 | { |
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| 162 | #pragma omp critical (read_from_buffer) |
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| 163 | { |
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| 164 | #pragma omp flush |
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| 165 | copy(buffer, buffer+min(BUFFER_SIZE, count-j), recv_buf+j); |
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| 166 | } |
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| 167 | } |
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| 168 | MPI_Barrier_local(comm); |
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| 169 | } |
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| 170 | } |
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| 171 | } |
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| 172 | |
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| 173 | int MPI_Scatterv_local_long(const void *sendbuf, const int sendcounts[], const int displs[], void *recvbuf, MPI_Comm comm) |
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| 174 | { |
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| 175 | int my_rank = comm.ep_comm_ptr->size_rank_info[1].first; |
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| 176 | int num_ep = comm.ep_comm_ptr->size_rank_info[1].second; |
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| 177 | |
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| 178 | |
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| 179 | long *buffer = comm.my_buffer->buf_long; |
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| 180 | long *send_buf = static_cast<long*>(const_cast<void*>(sendbuf)); |
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| 181 | long *recv_buf = static_cast<long*>(recvbuf); |
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| 182 | |
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| 183 | for(int k=0; k<num_ep; k++) |
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| 184 | { |
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| 185 | int count = sendcounts[k]; |
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| 186 | for(int j=0; j<count; j+=BUFFER_SIZE) |
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| 187 | { |
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| 188 | if(my_rank == 0) |
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| 189 | { |
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| 190 | #pragma omp critical (write_to_buffer) |
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| 191 | { |
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| 192 | copy(send_buf+displs[k]+j, send_buf+displs[k]+j+min(BUFFER_SIZE, count-j), buffer); |
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| 193 | #pragma omp flush |
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| 194 | } |
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| 195 | } |
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| 196 | |
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| 197 | MPI_Barrier_local(comm); |
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| 198 | |
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| 199 | if(my_rank == k) |
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| 200 | { |
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| 201 | #pragma omp critical (read_from_buffer) |
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| 202 | { |
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| 203 | #pragma omp flush |
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| 204 | copy(buffer, buffer+min(BUFFER_SIZE, count-j), recv_buf+j); |
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| 205 | } |
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| 206 | } |
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| 207 | MPI_Barrier_local(comm); |
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| 208 | } |
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| 209 | } |
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| 210 | } |
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| 211 | |
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| 212 | |
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| 213 | int MPI_Scatterv_local_ulong(const void *sendbuf, const int sendcounts[], const int displs[], void *recvbuf, MPI_Comm comm) |
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| 214 | { |
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| 215 | int my_rank = comm.ep_comm_ptr->size_rank_info[1].first; |
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| 216 | int num_ep = comm.ep_comm_ptr->size_rank_info[1].second; |
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| 217 | |
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| 218 | |
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| 219 | unsigned long *buffer = comm.my_buffer->buf_ulong; |
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| 220 | unsigned long *send_buf = static_cast<unsigned long*>(const_cast<void*>(sendbuf)); |
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| 221 | unsigned long *recv_buf = static_cast<unsigned long*>(recvbuf); |
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| 222 | |
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| 223 | for(int k=0; k<num_ep; k++) |
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| 224 | { |
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| 225 | int count = sendcounts[k]; |
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| 226 | for(int j=0; j<count; j+=BUFFER_SIZE) |
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| 227 | { |
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| 228 | if(my_rank == 0) |
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| 229 | { |
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| 230 | #pragma omp critical (write_to_buffer) |
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| 231 | { |
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| 232 | copy(send_buf+displs[k]+j, send_buf+displs[k]+j+min(BUFFER_SIZE, count-j), buffer); |
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| 233 | #pragma omp flush |
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| 234 | } |
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| 235 | } |
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| 236 | |
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| 237 | MPI_Barrier_local(comm); |
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| 238 | |
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| 239 | if(my_rank == k) |
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| 240 | { |
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| 241 | #pragma omp critical (read_from_buffer) |
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| 242 | { |
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| 243 | #pragma omp flush |
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| 244 | copy(buffer, buffer+min(BUFFER_SIZE, count-j), recv_buf+j); |
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| 245 | } |
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| 246 | } |
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| 247 | MPI_Barrier_local(comm); |
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| 248 | } |
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| 249 | } |
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| 250 | } |
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| 251 | |
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| 252 | |
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| 253 | int MPI_Scatterv_local_char(const void *sendbuf, const int sendcounts[], const int displs[], void *recvbuf, MPI_Comm comm) |
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| 254 | { |
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| 255 | int my_rank = comm.ep_comm_ptr->size_rank_info[1].first; |
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| 256 | int num_ep = comm.ep_comm_ptr->size_rank_info[1].second; |
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| 257 | |
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| 258 | |
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| 259 | char *buffer = comm.my_buffer->buf_char; |
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| 260 | char *send_buf = static_cast<char*>(const_cast<void*>(sendbuf)); |
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| 261 | char *recv_buf = static_cast<char*>(recvbuf); |
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| 262 | |
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| 263 | for(int k=0; k<num_ep; k++) |
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| 264 | { |
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| 265 | int count = sendcounts[k]; |
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| 266 | for(int j=0; j<count; j+=BUFFER_SIZE) |
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| 267 | { |
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| 268 | if(my_rank == 0) |
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| 269 | { |
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| 270 | #pragma omp critical (write_to_buffer) |
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| 271 | { |
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| 272 | copy(send_buf+displs[k]+j, send_buf+displs[k]+j+min(BUFFER_SIZE, count-j), buffer); |
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| 273 | #pragma omp flush |
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| 274 | } |
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| 275 | } |
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| 276 | |
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| 277 | MPI_Barrier_local(comm); |
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| 278 | |
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| 279 | if(my_rank == k) |
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| 280 | { |
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| 281 | #pragma omp critical (read_from_buffer) |
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| 282 | { |
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| 283 | #pragma omp flush |
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| 284 | copy(buffer, buffer+min(BUFFER_SIZE, count-j), recv_buf+j); |
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| 285 | } |
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| 286 | } |
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| 287 | MPI_Barrier_local(comm); |
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| 288 | } |
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| 289 | } |
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| 290 | } |
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| 291 | |
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| 292 | |
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| 293 | int MPI_Scatterv(const void *sendbuf, const int sendcounts[], const int displs[], MPI_Datatype sendtype, void *recvbuf, int recvcount, |
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| 294 | MPI_Datatype recvtype, int root, MPI_Comm comm) |
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| 295 | { |
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| 296 | if(!comm.is_ep) |
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| 297 | { |
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| 298 | ::MPI_Scatterv(sendbuf, sendcounts, displs, static_cast< ::MPI_Datatype>(sendtype), recvbuf, recvcount, |
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| 299 | static_cast< ::MPI_Datatype>(recvtype), root, static_cast< ::MPI_Comm>(comm.mpi_comm)); |
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| 300 | return 0; |
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| 301 | } |
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| 302 | if(!comm.mpi_comm) return 0; |
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| 303 | |
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| 304 | assert(static_cast< ::MPI_Datatype>(sendtype) == static_cast< ::MPI_Datatype>(recvtype)); |
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| 305 | |
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| 306 | MPI_Datatype datatype = sendtype; |
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| 307 | |
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| 308 | int root_mpi_rank = comm.rank_map->at(root).second; |
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| 309 | int root_ep_loc = comm.rank_map->at(root).first; |
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| 310 | |
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| 311 | int ep_rank, ep_rank_loc, mpi_rank; |
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| 312 | int ep_size, num_ep, mpi_size; |
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| 313 | |
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| 314 | ep_rank = comm.ep_comm_ptr->size_rank_info[0].first; |
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| 315 | ep_rank_loc = comm.ep_comm_ptr->size_rank_info[1].first; |
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| 316 | mpi_rank = comm.ep_comm_ptr->size_rank_info[2].first; |
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| 317 | ep_size = comm.ep_comm_ptr->size_rank_info[0].second; |
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| 318 | num_ep = comm.ep_comm_ptr->size_rank_info[1].second; |
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| 319 | mpi_size = comm.ep_comm_ptr->size_rank_info[2].second; |
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| 320 | |
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| 321 | if(ep_rank != root) |
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| 322 | { |
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| 323 | sendcounts = new int[ep_size]; |
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| 324 | displs = new int[ep_size]; |
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| 325 | } |
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| 326 | |
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| 327 | MPI_Bcast(const_cast<int*>(sendcounts), ep_size, MPI_INT, root, comm); |
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| 328 | MPI_Bcast(const_cast<int*>(displs), ep_size, MPI_INT, root, comm); |
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| 329 | |
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| 330 | |
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| 331 | int count = recvcount; |
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| 332 | |
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| 333 | ::MPI_Aint datasize, lb; |
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| 334 | |
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| 335 | ::MPI_Type_get_extent(static_cast< ::MPI_Datatype>(datatype), &lb, &datasize); |
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| 336 | |
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| 337 | assert(accumulate(sendcounts, sendcounts+ep_size-1, 0) == displs[ep_size-1]); // Only for contunuous gather. |
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| 338 | |
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| 339 | |
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| 340 | void *master_sendbuf; |
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| 341 | void *local_recvbuf; |
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| 342 | |
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| 343 | if(root_ep_loc!=0 && mpi_rank == root_mpi_rank) |
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| 344 | { |
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| 345 | int count_sum = accumulate(sendcounts, sendcounts+ep_size, 0); |
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| 346 | if(ep_rank_loc == 0) master_sendbuf = new void*[datasize*count_sum]; |
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| 347 | |
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| 348 | innode_memcpy(root_ep_loc, sendbuf, 0, master_sendbuf, count_sum, datatype, comm); |
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| 349 | } |
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| 350 | |
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| 351 | |
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| 352 | |
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| 353 | if(ep_rank_loc == 0) |
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| 354 | { |
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| 355 | int mpi_sendcnt = accumulate(sendcounts+ep_rank, sendcounts+ep_rank+num_ep, 0); |
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| 356 | int mpi_scatterv_sendcnt[mpi_size]; |
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| 357 | int mpi_displs[mpi_size]; |
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| 358 | |
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| 359 | local_recvbuf = new void*[datasize*mpi_sendcnt]; |
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| 360 | |
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| 361 | ::MPI_Gather(&mpi_sendcnt, 1, MPI_INT_STD, mpi_scatterv_sendcnt, 1, MPI_INT_STD, root_mpi_rank, static_cast< ::MPI_Comm>(comm.mpi_comm)); |
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| 362 | |
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| 363 | mpi_displs[0] = displs[0]; |
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| 364 | for(int i=1; i<mpi_size; i++) |
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| 365 | mpi_displs[i] = mpi_displs[i-1] + mpi_scatterv_sendcnt[i-1]; |
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| 366 | |
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| 367 | |
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| 368 | if(root_ep_loc!=0) |
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| 369 | { |
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| 370 | ::MPI_Scatterv(master_sendbuf, mpi_scatterv_sendcnt, mpi_displs, static_cast< ::MPI_Datatype>(datatype), |
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| 371 | local_recvbuf, mpi_sendcnt, static_cast< ::MPI_Datatype>(datatype), root_mpi_rank, static_cast< ::MPI_Comm>(comm.mpi_comm)); |
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| 372 | } |
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| 373 | else |
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| 374 | { |
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| 375 | ::MPI_Scatterv(sendbuf, mpi_scatterv_sendcnt, mpi_displs, static_cast< ::MPI_Datatype>(datatype), |
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| 376 | local_recvbuf, mpi_sendcnt, static_cast< ::MPI_Datatype>(datatype), root_mpi_rank, static_cast< ::MPI_Comm>(comm.mpi_comm)); |
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| 377 | } |
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| 378 | } |
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| 379 | |
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| 380 | int local_displs[num_ep]; |
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| 381 | local_displs[0] = 0; |
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| 382 | for(int i=1; i<num_ep; i++) |
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| 383 | { |
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| 384 | local_displs[i] = displs[ep_rank-ep_rank_loc+i]-displs[ep_rank-ep_rank_loc]; |
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| 385 | } |
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| 386 | |
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| 387 | MPI_Scatterv_local(local_recvbuf, sendcounts+ep_rank-ep_rank_loc, local_displs, datatype, recvbuf, comm); |
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| 388 | |
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| 389 | if(ep_rank_loc == 0) |
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| 390 | { |
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| 391 | if(datatype == MPI_INT) |
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| 392 | { |
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| 393 | if(root_ep_loc!=0 && mpi_rank == root_mpi_rank) delete[] static_cast<int*>(master_sendbuf); |
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| 394 | delete[] static_cast<int*>(local_recvbuf); |
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| 395 | } |
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| 396 | else if(datatype == MPI_FLOAT) |
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| 397 | { |
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| 398 | if(root_ep_loc!=0 && mpi_rank == root_mpi_rank) delete[] static_cast<float*>(master_sendbuf); |
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| 399 | delete[] static_cast<float*>(local_recvbuf); |
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| 400 | } |
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| 401 | else if(datatype == MPI_DOUBLE) |
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| 402 | { |
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| 403 | if(root_ep_loc!=0 && mpi_rank == root_mpi_rank) delete[] static_cast<double*>(master_sendbuf); |
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| 404 | delete[] static_cast<double*>(local_recvbuf); |
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| 405 | } |
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| 406 | else if(datatype == MPI_LONG) |
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| 407 | { |
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| 408 | if(root_ep_loc!=0 && mpi_rank == root_mpi_rank) delete[] static_cast<long*>(master_sendbuf); |
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| 409 | delete[] static_cast<long*>(local_recvbuf); |
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| 410 | } |
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| 411 | else if(datatype == MPI_UNSIGNED_LONG) |
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| 412 | { |
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| 413 | if(root_ep_loc!=0 && mpi_rank == root_mpi_rank) delete[] static_cast<unsigned long*>(master_sendbuf); |
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| 414 | delete[] static_cast<unsigned long*>(local_recvbuf); |
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| 415 | } |
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| 416 | else // if(datatype == MPI_DOUBLE) |
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| 417 | { |
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| 418 | if(root_ep_loc!=0 && mpi_rank == root_mpi_rank) delete[] static_cast<char*>(master_sendbuf); |
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| 419 | delete[] static_cast<char*>(local_recvbuf); |
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| 420 | } |
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| 421 | } |
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| 422 | else |
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| 423 | { |
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| 424 | delete[] sendcounts; |
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| 425 | delete[] displs; |
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| 426 | } |
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| 427 | |
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| 428 | } |
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| 429 | } |
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