spmd_fvb_switch.F

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!||====================================================================
!||    spmd_fvb_switch   ../engine/source/mpi/airbags/spmd_fvb_switch.F
!||--- called by ------------------------------------------------------
!||    resol             ../engine/source/engine/resol.F
!||--- calls      -----------------------------------------------------
!||--- uses       -----------------------------------------------------
!||    elbufdef_mod      ../common_source/modules/mat_elem/elbufdef_mod.F90
!||    fvbag_mod         ../engine/share/modules/fvbag_mod.F
!||    spmd_mod          ../engine/source/mpi/spmd_mod.F90
!||====================================================================
      SUBROUTINE spmd_fvb_switch(MONVOL)
C  Broadcast the information that a type 8 fvmbag has switched to type 7 UP monvol
C  To avoid deadlock, all processor must know which FVMBAGs have switched
C  to UP
C-----------------------------------------------
C   M o d u l e s 
C-----------------------------------------------
      USE fvbag_mod
      USE elbufdef_mod
      USE spmd_mod
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      "com04_c.inc"
#include      "param_c.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 MONVOL(*)                                                
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER :: K1,N,ITYP(NVOLU),ITYPR(NVOLU),IERR
C-----------------------------------------------
#ifdef MPI
 
      k1=1
      DO n=1,nvolu
         ityp(n)=monvol(k1-1+2)
         k1=k1+nimv
      ENDDO
 
      CALL mpi_allreduce(ityp,itypr,nvolu,mpi_integer,mpi_min,spmd_comm_world,ierr)
      k1=1
 
      DO n=1,nvolu
         IF(monvol(k1-1+2) == 8 .AND. itypr(n) == 7) THEN 
           monvol(k1-1+2) = 7 
           monvol(k1-1+15) = -1 
         ENDIF
         k1=k1+nimv
      ENDDO
#endif 
      RETURN
      END