Actual source code: ex31.c

  1: /*$Id: ex31.c,v 1.6 2001/03/23 23:21:30 balay Exp $*/

  3: /* 
  4:    Demonstrates PetscMatlabEngineXXX()
  5: */

 7:  #include petscvec.h

  9: int main(int argc,char **argv)
 10: {
 11:   int        ierr,rank,n = 5;
 12:   char       *output;
 13:   Vec        x;

 15:   PetscInitialize(&argc,&argv,(char *)0,0);

 17:   VecCreate(PETSC_COMM_WORLD,&x);
 18:   VecSetSizes(x,PETSC_DECIDE,n);
 19:   VecSetFromOptions(x);

 21:   MPI_Comm_rank(PETSC_COMM_WORLD,&rank);
 22:   PetscMatlabEngineGetOutput(PETSC_COMM_WORLD,&output);
 23:   PetscMatlabEngineEvaluate(PETSC_COMM_WORLD,"MPI_Comm_rank");
 24:   PetscSynchronizedPrintf(PETSC_COMM_WORLD,"[%d]Processor rank is %s",rank,output);
 25:   PetscSynchronizedFlush(PETSC_COMM_WORLD);

 27:   PetscObjectSetName((PetscObject)x,"x");
 28:   PetscMatlabEnginePut((PetscObject)x);
 29:   PetscMatlabEngineEvaluate(PETSC_COMM_WORLD,"x = x + MPI_Comm_rank;n");
 30:   PetscMatlabEngineGet((PetscObject)x);

 32:   PetscMatlabEngineEvaluate(PETSC_COMM_WORLD,"whosn");
 33:   PetscSynchronizedPrintf(PETSC_COMM_WORLD,"[%d]The result is %s",rank,output);
 34:   PetscSynchronizedFlush(PETSC_COMM_WORLD);

 36:   VecView(x,PETSC_VIEWER_STDOUT_WORLD);
 37:   VecDestroy(x);
 38:   PetscFinalize();
 39:   return 0;
 40: }
 41: