spmd_h3d_sum_r_nodal_value.F

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!||====================================================================
!||    spmd_h3d_sum_r_nodal_value   ../engine/source/output/h3d/spmd/spmd_h3d_sum_r_nodal_value.F
!||--- called by ------------------------------------------------------
!||    genh3d                       ../engine/source/output/h3d/h3d_results/genh3d.F
!||--- calls      -----------------------------------------------------
!||--- uses       -----------------------------------------------------
!||    spmd_comm_world_mod          ../engine/source/mpi/spmd_comm_world.F90
!||====================================================================
       SUBROUTINE spmd_h3d_sum_r_nodal_value(NODGLOB,V,LEN,VP0,LENP0)
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"
#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-----------------------------------------------
      INTEGER  , INTENT(IN) :: LEN,LENP0, NODGLOB(LEN)
      my_real  , INTENT(INOUT) :: 
     .   v(len),vp0(lenp0)
C-----------------------------------------------
C   L O C A L   V A R I A B L E S
C-----------------------------------------------
      INTEGER K 
      real
     .       , DIMENSION(:), ALLOCATABLE ::  v_tmp,vp0_tmp
#ifdef MPI
      INTEGER IERROR,I
 
        ALLOCATE(v_tmp(lenp0))
        ALLOCATE(vp0_tmp(lenp0))
 
        DO i=1,lenp0
           vp0_tmp(i)=zero
           v_tmp(i) = zero
        ENDDO
        DO k=1,len
           i=nodglob(k)
           vp0_tmp(i)=v(k)
        ENDDO
 
       IF (lenp0 > 0) THEN
        CALL mpi_reduce(vp0_tmp,v_tmp,lenp0,
     .                  mpi_real,mpi_sum,it_spmd(1),
     .                  spmd_comm_world,ierror)
       ENDIF
       IF (ispmd==0) THEN
         DO i=1,lenp0
          vp0(i) = v_tmp(i)
         END DO
       ENDIF
 
       DEALLOCATE(v_tmp,vp0_tmp)
#endif
       RETURN
       END