Re: [petsc-users] question about alternative to MatMatSolve

[Michael Povolotskyi]

On 11/4/2013 10:49 PM, Jed Brown wrote:

Michael Povolotskyi <mpovo...@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