[petsc-users] extract Mat data

[gouarin]

Hello,

I need to extract a pseudo CSR format from a PETSc Mat. It's easy with 
MATSEQ, I use:

MatGetRowIJ(A, 1, PETSC_FALSE, PETSC_FALSE, &(Acsr.n), &(Acsr.ia), 
&(Acsr.ja), &done);
MatGetArray(A, &(Acsr.a));

I want to do the same for MATMPI. This is what I do:

MatGetLocalMat(A,MAT_INITIAL_MATRIX, &Aloc);
MatGetRowIJ(Aloc, 1, PETSC_FALSE, PETSC_FALSE, &(Acsr.n), &(Acsr.ia), 
&(Acsr.ja), &done);
MatGetArray(Aloc, &(Acsr.a));

Now, I need to know on what process the non local points are.

Is there a petsc function that gives this partition ?

Best regards,
Loic