[petsc-users] question about alternative to MatMatSolve

[Michael Povolotskyi]

On 11/4/2013 10:49 PM, Jed Brown wrote:
> Michael Povolotskyi <mpovolot at purdue.edu> writes:
>> In my case each right hand side column is an almost empty vector with a
>> couple of non zero entries.
>> Is there any way to use the fact that the right hand side is very sparse
>> and make the calculations faster?
> Optimizing for this case would only give a small benefit because the
> vector becomes dense during the forward-solve and the entire back-solve
> has the dense vector.
Thank you.
Michael