On Wed, Apr 27, 2011 at 18:41, Xiangdong Liang wrote:
> Thanks a lot, Jed. I am using Petsc's built-in function, VecCreate and
> MatCreate. they are supposed to return PetscErrorCode. However, I still get
> "warning: return makes pointer from integer without a cast" for these
> built-in functions
On Wed, Apr 27, 2011 at 17:57, Xiangdong Liang wrote:
> I am a novice to Petsc and parallel computing. I have created a mpi sparse
> matrix A (size n-by-n) and a parallel vector b (size n-by-1). Now I want to
> modify the diagonal of A by adding the values of vector b. Namely, A(i,i) =
> A(i,i) +
On Wed, Apr 27, 2011 at 12:03 PM, Jed Brown wrote:
> On Wed, Apr 27, 2011 at 17:57, Xiangdong Liang wrote:
>
>> I am a novice to Petsc and parallel computing. I have created a mpi sparse
>> matrix A (size n-by-n) and a parallel vector b (size n-by-1). Now I want to
>> modify the diagonal of A by
Hello everyone,
I am a novice to Petsc and parallel computing. I have created a mpi sparse
matrix A (size n-by-n) and a parallel vector b (size n-by-1). Now I want to
modify the diagonal of A by adding the values of vector b. Namely, A(i,i) =
A(i,i) + b(i) and all the off-diagonal elements remains
