spmd_ialltoallv.F

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!||====================================================================
!||    spmd_ialltoallv   ../engine/source/mpi/generic/spmd_ialltoallv.F
!||--- called by ------------------------------------------------------
!||    spmd_sphgetv      ../engine/source/mpi/sph/spmd_sphgetv.F
!||    spmd_sphvox       ../engine/source/mpi/sph/spmd_sphvox.F
!||--- calls      -----------------------------------------------------
!||====================================================================
        SUBROUTINE spmd_ialltoallv(SENDBUF,RECVBUF,SEND_SIZE,TOTAL_SEND_SIZE,SDISPLS,
     .                             TOTAL_RCV_SIZE,RCV_SIZE,RDISPLS,
     .                             REQUEST,COMM,NB_PROC)
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include      "implicit_f.inc"
C-----------------------------------------------
C   C o m m o n   B l o c k s
C-----------------------------------------------
#include      "task_c.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
        INTEGER, INTENT(in) :: REQUEST,COMM
        INTEGER, INTENT(in) :: TOTAL_SEND_SIZE,TOTAL_RCV_SIZE,NB_PROC
        INTEGER, DIMENSION(NB_PROC), INTENT(in) :: SEND_SIZE
        INTEGER, DIMENSION(NB_PROC), INTENT(in) :: RCV_SIZE
        INTEGER, DIMENSION(NB_PROC), INTENT(in) :: SDISPLS,RDISPLS
        my_real, DIMENSION(TOTAL_SEND_SIZE), INTENT(in) :: sendbuf
        my_real, DIMENSION(TOTAL_RCV_SIZE), INTENT(out) :: recvbuf
 
#ifdef MPI
C-----------------------------------------------
C   L o c a l  V a r i a b l e s
C-----------------------------------------------
        INTEGER :: error
!       ----------------------------------------
 
!       ------------------------------------------
!       processor P(m) :
!       send buffer 
!          to proc :   P(1)     P(2)           P(n)
!                   |  s1   |   s2   |  ...  |  sn    |
!       size =         N(1)     N(2)             N(n)
!
!       rcv buffer 
!       from proc :   P(1)     P(2)           P(n)
!                   |  r1   |   r2   |  ...  |  rn    |
!       size =         M(1)     M(2)             M(n)
!       ------------------------------------------
 
!   PLMPI uses MPI-2.x version : MPI_IALLTOALLV was introduced in MPI-3.0 version
#if _PLMPI
!       ------------------
!       mpi comm alltoall with different amount of data
        CALL mpi_alltoallv(sendbuf,send_size,sdispls,real,
     .                     recvbuf,rcv_size,rdispls,real,
     .                     comm,error)
!       ------------------
#else
!       ------------------
!       mpi comm alltoall with different amount of data
        CALL mpi_ialltoallv(sendbuf,send_size,sdispls,real,
     .                     recvbuf,rcv_size,rdispls,real,
     .                     comm,request,error)
!       ------------------
#endif
#else
        recvbuf = 0
#endif
        RETURN
        END SUBROUTINE spmd_ialltoallv
 
 
!       ----------------------------------------