Actual source code: ex31.c

  1: /* 
  2:    Demonstrates PetscMatlabEngineXXX()
  3: */

 5:  #include petscvec.h

  9: int main(int argc,char **argv)
 10: {
 12:   PetscMPIInt    rank;
 13:   PetscInt       n = 5;
 14:   char           *output;
 15:   Vec            x;

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

 19:   VecCreate(PETSC_COMM_WORLD,&x);
 20:   VecSetSizes(x,PETSC_DECIDE,n);
 21:   VecSetFromOptions(x);

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

 29:   PetscObjectSetName((PetscObject)x,"x");
 30:   PetscMatlabEnginePut(PETSC_MATLAB_ENGINE_WORLD,(PetscObject)x);
 31:   PetscMatlabEngineEvaluate(PETSC_MATLAB_ENGINE_WORLD,"x = x + MPI_Comm_rank;\n");
 32:   PetscMatlabEngineGet(PETSC_MATLAB_ENGINE_WORLD,(PetscObject)x);

 34:   PetscMatlabEngineEvaluate(PETSC_MATLAB_ENGINE_WORLD,"whos\n");
 35:   PetscSynchronizedPrintf(PETSC_COMM_WORLD,"[%d]The result is %s",rank,output);
 36:   PetscSynchronizedFlush(PETSC_COMM_WORLD);

 38:   VecView(x,PETSC_VIEWER_STDOUT_WORLD);
 39:   VecDestroy(x);
 40:   PetscFinalize();
 41:   return 0;
 42: }
 43: