spmd_split_comm_joint.F

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!||====================================================================
!||    spmd_split_comm_joint   ../engine/source/mpi/init/spmd_split_comm_joint.F
!||--- called by ------------------------------------------------------
!||    mpp_init                ../engine/source/mpi/interfaces/spmd_i7tool.F
!||--- calls      -----------------------------------------------------
!||--- uses       -----------------------------------------------------
!||    joint_mod               ../engine/share/modules/joint_mod.F
!||    spmd_comm_world_mod     ../engine/source/mpi/spmd_comm_world.F90
!||====================================================================
        SUBROUTINE spmd_split_comm_joint(  )
!$COMMENT
!       SPMD_SPLIT_COMM_JOINT :
!              SPMD_SPLIT_COMM_JOINT creates new communicators
!              for /CYL_JOINT
!       SPMD_SPLIT_COMM_JOINT organization :
!              - loop over the joints in order to
!                tag all the processors
!              - then create a communicator for a given 
!                joint
!$ENDCOMMENT
C-----------------------------------------------
C   M o d u l e s
C-----------------------------------------------
        USE joint_mod
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      "com04_c.inc"
#include      "task_c.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
      
C-----------------------------------------------
C   L o c a l  V a r i a b l e s
C-----------------------------------------------
#ifdef MPI
 
        integer :: KEY,CODE,I,P
        INTEGER :: KK
 
C-----------------------------------------------
C   S o u r c e  L i n e s
C-----------------------------------------------
        p = ispmd + 1
!           -----------------------------
!       loop over the interface        
        DO kk=1,njoint
!           -----------------------------
            !   color the processor
            IF(cyl_join(kk)%NUMBER_NODE>0.OR.cyl_join(kk)%NUMBER_MAIN_NODE>0) THEN
                        cyl_join(kk)%COMM_MPI%COLOR=1
                        key = 1
            ELSE
                        cyl_join(kk)%COMM_MPI%COLOR=0
                        key = 0
            ENDIF       
            !   create the communicator
            CALL mpi_comm_split(spmd_comm_world,cyl_join(kk)%COMM_MPI%COLOR,p,cyl_join(kk)%COMM_MPI%COMM,code)
            IF(cyl_join(kk)%COMM_MPI%COLOR==1) THEN
                CALL mpi_comm_rank(cyl_join(kk)%COMM_MPI%COMM,cyl_join(kk)%COMM_MPI%RANK,code)
            ENDIF
        ENDDO
!           -----------------------------
#endif
        RETURN
        END SUBROUTINE spmd_split_comm_joint