petsc-users Digest, Vol 9, Issue 3

xiaoyin ji sapphire.jxy at gmail.com
Thu Sep 3 12:54:41 CDT 2009


I thought the preconditioner with ksp solver is a vector where the
solver start to iterate and solve...so my idea is if I could set a
vector which is close to the solution as preconditioner, then ksp will
do less iteration.

Xiaoyin Ji

> By the way, will there be a way to set a PETSc vector directly into a
>> preconditioner for the ksp solver?
>>
>
> Do not know what you mean here.
>
>  Matt
>
>
>> Thanks!
>>
>> Best,
>> Xiaoyin Ji
>>
>> Department of Materials Science and Engineering
>> North Carolina State University
>>
>
>
>
> --
> What most experimenters take for granted before they begin their experiments
> is infinitely more interesting than any results to which their experiments
> lead.
> -- Norbert Wiener
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