[petsc-users] Store only Matrix Structure (Binary)

[Thomas Hisch]

On Mon, Jul 16, 2012 at 11:44 PM, Matthew Knepley <knepley at gmail.com> wrote:
> On Mon, Jul 16, 2012 at 3:47 PM, Thomas Hisch <t.hisch at gmail.com> wrote:
>>
>> Hello list,
>>
>> is it possible to store just the nonzero pattern of a large (sparse)
>> matrix in a file? If I write the whole matrix to disk
>> (PetscViewerBinaryOpen/MatView) its size is about 30MB. As I only need
>> its structure it would be a good idea to load and store just the
>> non-zero pattern of the matrix.
>>
>> Has anyone tried to do that and are there corresponding functions in
>> petsc-dev?
>
>
> This is not in PETSc currrently. It would not be hard to do by commenting
> out the
> value parts in the source.

In which file do I have to look at ?

Thomas