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1 | #include "ep_lib.hpp" |
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2 | #include <mpi.h> |
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3 | //#include "ep_declaration.hpp" |
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4 | |
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5 | namespace ep_lib |
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6 | { |
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7 | |
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8 | |
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9 | |
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10 | int MPI_Alltoall(const void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf, int recvcount, MPI_Datatype recvtype, MPI_Comm comm) |
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11 | { |
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12 | ::MPI_Aint typesize, llb; |
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13 | ::MPI_Type_get_extent(static_cast< ::MPI_Datatype>(sendtype), &llb, &typesize); |
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14 | |
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15 | for(int i=0; i<comm.ep_comm_ptr->size_rank_info[0].second; i++) |
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16 | { |
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17 | MPI_Gather((char*)sendbuf+i*sendcount*typesize, sendcount, sendtype, recvbuf, recvcount, recvtype, i, comm); |
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18 | } |
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19 | |
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20 | return 0; |
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21 | } |
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22 | |
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23 | } |
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24 | |
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25 | |
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