spmd_min_max.F

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!||====================================================================
!||    spmd_min_max          ../engine/source/mpi/anim/spmd_min_max.F
!||--- called by ------------------------------------------------------
!||    scanor                ../engine/source/output/anim/generate/scanor.F
!||--- calls      -----------------------------------------------------
!||--- uses       -----------------------------------------------------
!||    spmd_comm_world_mod   ../engine/source/mpi/spmd_comm_world.F90
!||====================================================================
      SUBROUTINE spmd_min_max(X1,Y1,Z1,X2,Y2,Z2)
C spmd_min_max calcule les minimum des reels X1, Y1, Z1 et les
C maximum des reels X2, Y2, Z2 sur p0
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      "task_c.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
C   REAL*4 ou REAL*8
      my_real
     .  x1, y1, z1, x2, y2, z2
C-----------------------------------------------
C   L o c a l  V a r i a b l e s
C-----------------------------------------------
#ifdef MPI
      INTEGER INFO,K,I,ATID,ATAG,ALEN
C  REAL*4 ou REAL*8
      my_real
     .  tmp(6)
 
      INTEGER STATUS(MPI_STATUS_SIZE),IERROR
C  REAL*4 ou REAL*8
      my_real
     .  tmp1(3),tmpo(3)
C-----------------------------------------------
C   S o u r c e  L i n e s
C-----------------------------------------------
      tmp1(1) = x1
      tmp1(2) = y1
      tmp1(3) = z1
      call mpi_allreduce(tmp1,tmpo,3,real,
     .                   mpi_min,
     .                   spmd_comm_world,ierror)
      x1 = tmpo(1)
      y1 = tmpo(2)
      z1 = tmpo(3)
C
      tmp1(1)=x2
      tmp1(2)=y2
      tmp1(3)=z2
      call mpi_allreduce(tmp1,tmpo,3,real,
     .                   mpi_max,
     .                   spmd_comm_world,ierror)
      x2 = tmpo(1)
      y2 = tmpo(2)
      z2 = tmpo(3)
 
C
#endif
      RETURN
      END