[petsc-dev] question about Krylov solves, symmetric matrices, and ICC

Paul Mullowney paulm at txcorp.com
Wed Mar 6 10:07:11 CST 2013

On 03/06/2013 09:09 AM, Jed Brown wrote:
> On Wed, Mar 6, 2013 at 9:57 AM, Paul Mullowney <paulm at txcorp.com 
> <mailto:paulm at txcorp.com>> wrote:
>     This works. Thanks.
>     Does the Cholesky/ICC factorization have a specialized storage
>     i.e. like the ILU storage?

This answers my question. Thanks. Agreed that ILU is the way to go.

> There is only one triangular factor so it's not "special". You could 
> write an ICC that duplicated storage by copying the factor to optimize 
> back-solves for streaming, but it's of very little value compared to 
> just using ILU.

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