[petsc-users] A question on Schur complement

[Jed Brown]

saturday luis <luis.saturday at gmail.com> writes:

> Thanks, Jed.
>
> It seems that MatCreateLRC requires two dense matrices for U and V
> according to the page
> http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Mat/MatCreateLRC.html
>
> Not sure if it is applicable to sparse matrices.

Oops, I thought the implementation did not rely on that property, but in
fact it does.