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

Jed Brown jedbrown at mcs.anl.gov
Fri Oct 18 13:27:40 CDT 2013


James A Charles <charlesj at purdue.edu> writes:

> Actually I think I was wrong where it was occurring (I have several
> MatMatMults). 

If you use the error checking macros (CHKERRQ), you'll get a full stack
trace on errors like that.

> 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?
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