spmd_exch_stif_scnd.F File Reference

#include "implicit_f.inc"
#include "spmd.inc"
#include "com01_c.inc"
#include "task_c.inc"

Go to the source code of this file.

Functions/Subroutines
subroutine	spmd_exch_stif_scnd (stifnd, fr_cdns, iad_cdns, lcomm)

Function/Subroutine Documentation

spmd_exch_stif_scnd()

subroutine spmd_exch_stif_scnd	(		stifnd,
		integer, dimension(*)	fr_cdns,
		integer, dimension(*)	iad_cdns,
		integer	lcomm )

Definition at line 31 of file spmd_exch_stif_scnd.F.

C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
        USE spmd_comm_world_mod, ONLY : spmd_comm_world
#include      "implicit_f.inc"
C-----------------------------------------------
C   M e s s a g e   P a s s i n g
C-----------------------------------------------
#include "spmd.inc"
C-----------------------------------------------
C   C o m m o n   B l o c k s
C-----------------------------------------------
#include      "com01_c.inc"
#include      "task_c.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
      INTEGER LCOMM, FR_CDNS(*), IAD_CDNS(*)
      my_real
     .        stifnd(*)
C-----------------------------------------------
C   L o c a l  V a r i a b l e s
C-----------------------------------------------
#ifdef MPI
      INTEGER MSGTYP,LOC_PROC,NOD,I,J,L,IDEB,IAD,LEN,
     .        NBINDEX,INDEX,MSGOFF,SIZ,IERROR,
     .        STATUS(MPI_STATUS_SIZE),
     .        REQ_S(NSPMD),REQ_R(NSPMD),INDEXI(NSPMD)
      DATA msgoff/1179/
      my_real
     .        sbuf(lcomm),rbuf(lcomm)
C-----------------------------------------------
C   S o u r c e  L i n e s
C-----------------------------------------------
      loc_proc = ispmd + 1
C
      ideb = 1
      l = 0
c      ISIZE = 1
      DO i = 1, nspmd
        len = iad_cdns(i+1)-iad_cdns(i)
        IF(len>0) THEN
          siz = len
          l=l+1
          indexi(l)=i
          msgtyp = msgoff
          CALL mpi_irecv(
     s      rbuf(ideb),siz,real,it_spmd(i),msgtyp,
     g      spmd_comm_world,req_r(l),ierror)
          ideb = ideb + siz
        ENDIF
      ENDDO
      nbindex = l
C
      ideb = 1
      DO l = 1, nbindex
        i = indexi(l)
        len = iad_cdns(i+1) - iad_cdns(i)
        iad = iad_cdns(i)-1
        DO j = 1, len
         nod = fr_cdns(iad+j)
         sbuf(ideb) = stifnd(nod)
         ideb = ideb + 1
        ENDDO
      ENDDO
C
      ideb = 1
      DO l=1,nbindex
        i = indexi(l)
        len = iad_cdns(i+1)-iad_cdns(i)
        siz = len
        msgtyp = msgoff
        CALL mpi_isend(
     s    sbuf(ideb),siz,real,it_spmd(i),msgtyp,
     g    spmd_comm_world,req_s(l),ierror)
        ideb = ideb + siz
      ENDDO
C
      DO l=1,nbindex
        CALL mpi_waitany(nbindex,req_r,index,status,ierror)
        i = indexi(index)
        ideb = iad_cdns(i)
        len = iad_cdns(i+1)-iad_cdns(i)
        iad = iad_cdns(i)-1
        DO j = 1, len
         nod = fr_cdns(iad+j)
         stifnd(nod) = stifnd(nod) + rbuf(ideb)
         ideb = ideb + 1
        ENDDO
      ENDDO
C
      DO l=1,nbindex
        CALL mpi_waitany(nbindex,req_s,index,status,ierror)
      ENDDO
C
#endif
      RETURN