rad_spmd_recv.F

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!||====================================================================
!||    rad_spmd_recv         ../engine/source/mpi/generic/rad_spmd_recv.F
!||--- called by ------------------------------------------------------
!||    aniskewf              ../engine/source/output/anim/generate/aniskewf.f
!||    printime              ../engine/source/system/timer.F
!||--- calls      -----------------------------------------------------
!||--- uses       -----------------------------------------------------
!||    spmd_comm_world_mod   ../engine/source/mpi/spmd_comm_world.F90
!||====================================================================
      SUBROUTINE rad_spmd_recv(A,SIZ,ISPMD,IT_SPMD,MSGTAG,INTSIZE)
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
       implicit none
C#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   D u m m y   A r g u m e n t s
C-----------------------------------------------
      INTEGER SIZ,ISPMD,IT_SPMD(*),MSGTAG,INTSIZE
      INTEGER, INTENT(INOUT) :: A(*)
C-----------------------------------------------
C   L o c a l  V a r i a b l e s
C-----------------------------------------------
#ifdef MPI
      INTEGER BUFSIZMAX, ADD, LEN, SIZ_I
      INTEGER STATUS(MPI_STATUS_SIZE),IERROR
C shared memory segment must be superior to 10 Mb
      DATA bufsizmax/10000000/
C-----------------------------------------------
C   S o u r c e  L i n e s
C-----------------------------------------------
      add = 1
      siz_i = siz
 1    len = min(siz_i,bufsizmax)
 
      CALL mpi_recv(a(add),len,mpi_byte,it_spmd(ispmd+1),msgtag,
     .              spmd_comm_world,status,ierror)
      CALL mpi_send(a,0,mpi_byte,it_spmd(ispmd+1),msgtag,
     .              spmd_comm_world,ierror)
 
      add = add + len/intsize
      siz_i = siz_i - len
      IF (siz_i>0) GO TO 1
#endif
      RETURN
      END