[petsc-users] Weighted Jacobi

[Timothée Nicolas]

OK, I'll look at that, thanks

Timothee

2015-12-01 18:02 GMT+09:00 Dave May <dave.mayhem23 at gmail.com>:

> I believe what you are looking for is defined by the following options
>   -ksp_type richardson
>   -ksp_richardson_scale <value>
>   -pc_type jacobi
>
> Thanks,
>   Dave
>
> On 1 December 2015 at 08:57, Timothée Nicolas <timothee.nicolas at gmail.com>
> wrote:
>
>> Hi all,
>>
>> Is weighted Jacobi available as a preconditioner ? I can't find it in the
>> list of preconditioners. If not, what is the rationale between this choice
>> ? It is pretty straightforward to code, so if it is not available I can do
>> it without problem I guess, but I am just wondering. In the matrix-free
>> case where SOR is not available by default, it may be better than pure
>> Jacobi, and much easier to parallelize than SOR.
>>
>> Best
>>
>> Timothee
>>
>
>
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