[petsc-users] Dense Matrix setting local rows / local columns Question

[Jed Brown]

Jed Brown <jedbrown at mcs.anl.gov> writes:
>> The MatMatMult for sparse-dense seems to be working! The problem seems
>> to be with dense-dense? I made sure of this by printing out the Matrix
>> Type before calling the multiplication. Is dense-dense not supported?
>
> Correct.  I thought you said your dense matrix had only a few columns.
> What are you multiplying it with?

We used to use PLAPACK for dense-dense products, but it had bugs and we
have since switched to Elemental, which is its own format
(MATELEMENTAL).  But for matrices with only a few columns, you wouldn't
want that distribution.
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