spmd_fvb_comm_pattern.F

Go to the documentation of this file.

Copyright>        OpenRadioss
Copyright>        Copyright (C) 1986-2025 Altair Engineering Inc.
Copyright>
Copyright>        This program is free software: you can redistribute it and/or modify
Copyright>        it under the terms of the GNU Affero General Public License as published by
Copyright>        the Free Software Foundation, either version 3 of the License, or
Copyright>        (at your option) any later version.
Copyright>
Copyright>        This program is distributed in the hope that it will be useful,
Copyright>        but WITHOUT ANY WARRANTY; without even the implied warranty of
Copyright>        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Copyright>        GNU Affero General Public License for more details.
Copyright>
Copyright>        You should have received a copy of the GNU Affero General Public License
Copyright>        along with this program.  If not, see <https://www.gnu.org/licenses/>.
Copyright>
Copyright>
Copyright>        Commercial Alternative: Altair Radioss Software
Copyright>
Copyright>        As an alternative to this open-source version, Altair also offers Altair Radioss
Copyright>        software under a commercial license.  Contact Altair to discuss further if the
Copyright>        commercial version may interest you: https://www.altair.com/radioss/.
 
!||====================================================================
!||    spmd_fvb_comm_pattern   ../engine/source/mpi/airbags/spmd_fvb_comm_pattern.F
!||--- called by ------------------------------------------------------
!||    fvrrest                 ../engine/source/output/restart/rdresb.F
!||--- calls      -----------------------------------------------------
!||--- uses       -----------------------------------------------------
!||    fvbag_mod               ../engine/share/modules/fvbag_mod.F
!||====================================================================
      SUBROUTINE spmd_fvb_comm_pattern(IFV) 
 
! Prepare the communication pattern for the FVB 
C-----------------------------------------------
C   M o d u l e s
C-----------------------------------------------
      USE fvbag_mod
C-----------------------------------------------
C   I m p l i c i t   T y p e s
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   C o m m o n   B l o c k s
C-----------------------------------------------
#include      "com01_c.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
      INTEGER IFV                            
C-----------------------------------------------
C   L o c a l  V a r i a b l e s
C-----------------------------------------------
#ifdef MPI
      INTEGER IERROR, LENG,ITABL(4) 
      INTEGER II, I, ITAG, LEN, ITAB(3,NSPMD-1),REQ(2*(NSPMD-1)),
     .        STAT(MPI_STATUS_SIZE,2*(NSPMD-1)), IERR, 
     .        MSGOFF
      DATA msgoff/238/
 
C-----------------------------------------------
C   S o u r c e  L i n e s
C-----------------------------------------------
      leng=1
      IF(fvspmd(ifv)%RANK > -1) THEN
        CALL mpi_allreduce(fvspmd(ifv)%NNA_L,fvspmd(ifv)%NNA_L_GLOB,leng,
     .          mpi_integer,mpi_sum, fvspmd(ifv)%MPI_COMM, ierror)
C
      ELSE
        fvspmd(ifv)%NNA_L_GLOB = 0
      ENDIF
 
      IF (fvspmd(ifv)%RANK == 0) THEN
C Reception des longueurs
         ii=0
         DO i=1,fvspmd(ifv)%NSPMD-1
            ii=ii+1
            itag=msgoff+i
            len=4
            CALL mpi_irecv(fvspmd(ifv)%ITAB(1,ii), len, mpi_integer, i,
     .                     itag, fvspmd(ifv)%MPI_COMM, req(ii), ierr)
         ENDDO
         CALL mpi_waitall(fvspmd(ifv)%NSPMD-1, req, stat, ierr)
 
      ELSE IF(fvspmd(ifv)%RANK > 0) THEN
         itabl(1)=fvspmd(ifv)%NN_L
C ajout noeuds internes
         itabl(2)=fvspmd(ifv)%NNA_L
         itabl(3)=fvspmd(ifv)%NNSA_L
         itabl(4)=fvspmd(ifv)%NNI_L
         itag=msgoff+fvspmd(ifv)%RANK
         len=4
         CALL mpi_send(itabl, len, mpi_integer, 0,
     .         itag, fvspmd(ifv)%MPI_COMM, ierr)
C
      ENDIF
#endif
      RETURN
      END