spmd_ialltoall.F File Reference

#include "implicit_f.inc"
#include "task_c.inc"

Go to the source code of this file.

Functions/Subroutines
subroutine	spmd_ialltoall (sendbuf, recvbuf, total_send_size, send_size, total_rcv_size, rcv_size, request, comm)

Function/Subroutine Documentation

spmd_ialltoall()

subroutine spmd_ialltoall	(	intent(in)	sendbuf,
		intent(out)	recvbuf,
		integer, intent(in)	total_send_size,
		integer, intent(in)	send_size,
		integer, intent(in)	total_rcv_size,
		integer, intent(in)	rcv_size,
		integer, intent(in)	request,
		integer, intent(in)	comm )

Definition at line 30 of file spmd_ialltoall.F.

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) :: SEND_SIZE,TOTAL_SEND_SIZE
        INTEGER, INTENT(in) :: REQUEST,COMM
        INTEGER, INTENT(in) :: RCV_SIZE,TOTAL_RCV_SIZE
        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        N                N
!
!       rcv buffer 
!       from proc :   P(1)     P(2)           P(n)
!                   |  r1   |   r2   |  ...  |  rn    |
!       size =         N        N                N
!       ------------------------------------------
 
!   PLMPI uses MPI-2.x version : MPI_IALLTOALL was introduced in MPI-3.0 version
#if _PLMPI
!       mpi comm alltoall
        CALL mpi_alltoall(sendbuf,send_size,real,
     .                     recvbuf,rcv_size,real,
     .                     comm,error)
!       ------------------
#else
!       ------------------
!       mpi comm alltoall
        CALL mpi_ialltoall(sendbuf,send_size,real,
     .                     recvbuf,rcv_size,real,
     .                     comm,request,error)
!       ------------------
#endif
#else
        recvbuf = 0
#endif
        RETURN