/*@C
PetscMatlabEnginePrintOutput - prints the output from MATLAB
Collective on PetscMatlabEngine
Input Parameters:
. mengine - the Matlab engine
Level: advanced
.seealso: PetscMatlabEngineDestroy(), PetscMatlabEnginePut(), PetscMatlabEngineGet(),
PetscMatlabEngineEvaluate(), PetscMatlabEngineGetOutput(), PetscMatlabEngineCreate(),
PETSC_MATLAB_ENGINE_(), PetscMatlabEnginePutArray(), PetscMatlabEngineGetArray(), PetscMatlabEngine
@*/
PetscErrorCode PetscMatlabEnginePrintOutput(PetscMatlabEngine mengine,FILE *fd)
{
PetscErrorCode ierr;
PetscMPIInt rank;
PetscFunctionBegin;
ierr = MPI_Comm_rank(PetscObjectComm((PetscObject)mengine),&rank);CHKERRQ(ierr);
ierr = PetscSynchronizedFPrintf(PetscObjectComm((PetscObject)mengine),fd,"[%d]%s",rank,mengine->buffer);CHKERRQ(ierr);
ierr = PetscSynchronizedFlush(PetscObjectComm((PetscObject)mengine),fd);CHKERRQ(ierr);
PetscFunctionReturn(0);
}
int main(int argc,char **argv)
{
PetscMPIInt rank;
PetscErrorCode ierr;
PetscInitialize(&argc,&argv,(char *)0,help);
ierr = MPI_Comm_rank(PETSC_COMM_WORLD,&rank);CHKERRQ(ierr);
ierr = PetscSynchronizedPrintf(PETSC_COMM_WORLD,"Greetings from %d\n",rank);CHKERRQ(ierr);
ierr = PetscSynchronizedFlush(PETSC_COMM_WORLD);CHKERRQ(ierr);
ierr = PetscSynchronizedFPrintf(PETSC_COMM_WORLD,stderr,"Greetings again from %d\n",rank);CHKERRQ(ierr);
ierr = PetscSynchronizedFlush(PETSC_COMM_WORLD);CHKERRQ(ierr);
ierr = PetscFinalize();CHKERRQ(ierr);
return 0;
}
int main(int argc,char **args)
{
Mat C,A;
PetscInt i,j,m = 3,n = 2,Ii,J,rstart,rend,nz;
PetscMPIInt rank,size;
PetscErrorCode ierr;
const PetscInt *idx;
PetscScalar v;
const PetscScalar *values;
PetscInitialize(&argc,&args,(char*)0,help);
ierr = MPI_Comm_rank(PETSC_COMM_WORLD,&rank);CHKERRQ(ierr);
ierr = MPI_Comm_size(PETSC_COMM_WORLD,&size);CHKERRQ(ierr);
n = 2*size;
/* create the matrix for the five point stencil, YET AGAIN*/
ierr = MatCreate(PETSC_COMM_WORLD,&C);CHKERRQ(ierr);
ierr = MatSetSizes(C,PETSC_DECIDE,PETSC_DECIDE,m*n,m*n);CHKERRQ(ierr);
ierr = MatSetFromOptions(C);CHKERRQ(ierr);
ierr = MatMPIAIJSetPreallocation(C,5,NULL,5,NULL);CHKERRQ(ierr);
ierr = MatSeqAIJSetPreallocation(C,5,NULL);CHKERRQ(ierr);
for (i=0; i<m; i++) {
for (j=2*rank; j<2*rank+2; j++) {
v = -1.0; Ii = j + n*i;
if (i>0) {J = Ii - n; ierr = MatSetValues(C,1,&Ii,1,&J,&v,INSERT_VALUES);CHKERRQ(ierr);}
if (i<m-1) {J = Ii + n; ierr = MatSetValues(C,1,&Ii,1,&J,&v,INSERT_VALUES);CHKERRQ(ierr);}
if (j>0) {J = Ii - 1; ierr = MatSetValues(C,1,&Ii,1,&J,&v,INSERT_VALUES);CHKERRQ(ierr);}
if (j<n-1) {J = Ii + 1; ierr = MatSetValues(C,1,&Ii,1,&J,&v,INSERT_VALUES);CHKERRQ(ierr);}
v = 4.0; ierr = MatSetValues(C,1,&Ii,1,&Ii,&v,INSERT_VALUES);CHKERRQ(ierr);
}
}
ierr = MatAssemblyBegin(C,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr);
ierr = MatAssemblyEnd(C,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr);
ierr = PetscViewerPushFormat(PETSC_VIEWER_STDOUT_WORLD,PETSC_VIEWER_ASCII_INFO);CHKERRQ(ierr);
ierr = MatView(C,PETSC_VIEWER_STDOUT_WORLD);CHKERRQ(ierr);
ierr = PetscViewerPopFormat(PETSC_VIEWER_STDOUT_WORLD);CHKERRQ(ierr);
ierr = MatView(C,PETSC_VIEWER_STDOUT_WORLD);CHKERRQ(ierr);
ierr = MatGetOwnershipRange(C,&rstart,&rend);CHKERRQ(ierr);
for (i=rstart; i<rend; i++) {
ierr = MatGetRow(C,i,&nz,&idx,&values);CHKERRQ(ierr);
ierr = PetscSynchronizedFPrintf(PETSC_COMM_WORLD,stdout,"[%d] get row %D: ",rank,i);CHKERRQ(ierr);
for (j=0; j<nz; j++) {
ierr = PetscSynchronizedFPrintf(PETSC_COMM_WORLD,stdout,"%D %G ",idx[j],PetscRealPart(values[j]));CHKERRQ(ierr);
}
ierr = PetscSynchronizedFPrintf(PETSC_COMM_WORLD,stdout,"\n");CHKERRQ(ierr);
ierr = MatRestoreRow(C,i,&nz,&idx,&values);CHKERRQ(ierr);
}
ierr = PetscSynchronizedFlush(PETSC_COMM_WORLD,stdout);CHKERRQ(ierr);CHKERRQ(ierr);
ierr = MatConvert(C,MATSAME,MAT_INITIAL_MATRIX,&A);CHKERRQ(ierr);
ierr = PetscViewerPushFormat(PETSC_VIEWER_STDOUT_WORLD,PETSC_VIEWER_ASCII_INFO);CHKERRQ(ierr);
ierr = MatView(A,PETSC_VIEWER_STDOUT_WORLD);CHKERRQ(ierr);
ierr = PetscViewerPopFormat(PETSC_VIEWER_STDOUT_WORLD);CHKERRQ(ierr);
ierr = MatView(A,PETSC_VIEWER_STDOUT_WORLD);CHKERRQ(ierr);
ierr = MatDestroy(&A);CHKERRQ(ierr);
ierr = MatDestroy(&C);CHKERRQ(ierr);
ierr = PetscFinalize();
return 0;
}
