spmd_iallgather.F

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!||====================================================================
!||    spmd_iallgather   ../engine/source/mpi/generic/spmd_iallgather.F
!||--- called by ------------------------------------------------------
!||    spmd_sphvox       ../engine/source/mpi/sph/spmd_sphvox.F
!||--- calls      -----------------------------------------------------
!||====================================================================
        SUBROUTINE spmd_iallgather(SENDBUF,RECVBUF,SEND_SIZE,TOTAL_RCV_SIZE,RCV_SIZE, 
     .                              REQUEST,COMM)
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include      "implicit_f.inc"
#include      "r4r8_p.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) :: SEND_SIZE,TOTAL_RCV_SIZE
        INTEGER, INTENT(in) :: REQUEST,COMM
        INTEGER, INTENT(in) :: RCV_SIZE
        my_real, DIMENSION(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(1-->n) :
!       send buffer 
!                   |  s(m)   |
!       size =           N      
!
!       For all processor :
!       rcv buffer
!       from proc :   P(1)        P(2)              P(n)
!                   |  s(1)   |   s(2)   |  ...  |  s(n)    |
!       size =          N       N                    N
!       ------------------------------------------
 
!   PLMPI uses MPI-2.x version : MPI_IALLGATHER was introduced in MPI-3.0 version
#if _PLMPI
!       ------------------
        CALL mpi_allgather(sendbuf,send_size,real,
     .                   recvbuf,rcv_size,real,
     .                   comm,error)
!       ------------------
#else
!       ------------------
        CALL mpi_iallgather(sendbuf,send_size,real,
     .                   recvbuf,rcv_size,real,
     .                   comm,request,error)
!       ------------------
#endif
#else
        recvbuf = 0
#endif
        RETURN
        END SUBROUTINE spmd_iallgather
 
 
!       ----------------------------------------