[petsc-dev] Branches with additional features

[Jed Brown]

Pierre Jolivet <pierre.jolivet at enseeiht.fr> writes:

>> On 29 May 2017, at 06:49, Jed Brown <jed at jedbrown.org> wrote:
>> 
>> You can't get a callback from this "external Krylov solver"?
>
> You mean, a callback to let the external solver use the memory allocated by PETSc for the Mats? Unfortunately, I need the underlying memory to be contiguous between all Mats, and I don't think it is possible with the current PETSc operators for matrix creation.

You can allocate the full block, then pass portions of the (column-aligned) array in MatCreateDense().
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