spmd_iget_partn.F

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!||====================================================================
!||    spmd_iget_partn       ../engine/source/mpi/anim/spmd_iget_partn.F
!||--- called by ------------------------------------------------------
!||    anioff0               ../engine/source/output/anim/generate/anioff0.F
!||    anioffc               ../engine/source/output/anim/generate/anioffc.F
!||    anioffc_crk           ../engine/source/output/anim/generate/anioffc_crk.F
!||    anioffc_ply           ../engine/source/output/anim/generate/anioffc_ply.F
!||    aniofff               ../engine/source/output/anim/generate/aniofff.F
!||    anioffs               ../engine/source/output/anim/generate/anioff6.f
!||    delnumb0              ../engine/source/output/anim/generate/delnumb0.F
!||    delnumbc              ../engine/source/output/anim/generate/delnumbc.F
!||    delnumbc_crk          ../engine/source/output/anim/generate/delnumbc_crk.F
!||    delnumbf              ../engine/source/output/anim/generate/delnumbf.F
!||    delnumbs              ../engine/source/output/anim/generate/delnumb6.F
!||    parsor0               ../engine/source/output/anim/generate/parsor0.F
!||    parsor_crk            ../engine/source/output/anim/generate/parsor_crk.F
!||    parsorc               ../engine/source/output/anim/generate/parsorc.F
!||    parsorf               ../engine/source/output/anim/generate/parsorf.F
!||    parsors               ../engine/source/output/anim/generate/parsors.F
!||--- calls      -----------------------------------------------------
!||    write_c_c             ../common_source/tools/input_output/write_routines.c
!||    write_i_c             ../common_source/tools/input_output/write_routines.c
!||--- uses       -----------------------------------------------------
!||    spmd_comm_world_mod   ../engine/source/mpi/spmd_comm_world.F90
!||====================================================================
      SUBROUTINE spmd_iget_partn(SIZE,NBF_L,NP,NBPART,IADG,SRBUF,IFLAG)
C gather on p0 of the wa array according to the parts (IADG)
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 NBF_L, NP(*),IADG(NSPMD,*),SIZE
      INTEGER  NBPART, IFLAG,SRBUF
C-----------------------------------------------
C   L o c a l  V a r i a b l e s
C-----------------------------------------------
#ifdef MPI
      INTEGER MSGOFF,MSGTYP,IDEB,K,N,NB_TMP,LEN,IADP(NSPMD)
 
      INTEGER STATUS(MPI_STATUS_SIZE),IERROR
      INTEGER, DIMENSION(:),ALLOCATABLE :: RBUF
      DATA msgoff/7029/
C-----------------------------------------------
C   S o u r c e  L i n e s
C-----------------------------------------------
C     Bug here: The actual recieve buffer size is not the same 
C     as the size written. Removing the initialization to -HUGE(IERROR)
C     will cause valgrind errors about uninitialized memory.
      ALLOCATE(rbuf(srbuf+1))
      rbuf(1:srbuf) = -huge(ierror)
 
      IF (ispmd/=0) THEN
        msgtyp= msgoff
 
        CALL mpi_send(np,nbf_l,mpi_integer,it_spmd(1),msgtyp,
     .                spmd_comm_world,ierror)
 
      ELSE
        DO k=1,nbf_l
           rbuf(k) = np(k)
        ENDDO
        ideb = nbf_l +  1
        iadp(1) = 1
C
      DO k=2,nspmd
        iadp(k) = ideb
        msgtyp= msgoff
 
         CALL mpi_probe(it_spmd(k),msgtyp,
     .                   spmd_comm_world,status,ierror)
         CALL mpi_get_count(status,mpi_integer,nb_tmp,ierror)
 
         CALL mpi_recv(rbuf(ideb),nb_tmp,mpi_integer,it_spmd(k),msgtyp,
     .                  spmd_comm_world,status,ierror)
 
        ideb = ideb + nb_tmp
        END DO
C
        DO n = 1, nbpart
          DO k = 1, nspmd
            IF (n>1) THEN
              len = (iadg(k,n) - iadg(k,n-1))*SIZE
            ELSE
              len = iadg(k,n)*SIZE
            ENDIF
 
            IF (iflag==1) THEN
              IF(len>0)CALL write_i_c(rbuf(iadp(k)),len)
            ELSEIF(iflag==2) THEN
              IF(len>0)CALL write_c_c(rbuf(iadp(k)),len)
            ENDIF
            iadp(k) = iadp(k) + len
          ENDDO
        ENDDO
      ENDIF
C
      DEALLOCATE(rbuf)
#endif
      RETURN
      END