[petsc-dev] Preconditioners for GPU

[Matthew Knepley]

On Sun, May 5, 2013 at 4:26 PM, Andrea Lani <andrea.lani at gmail.com> wrote:

> Thanks, Matt! Let me re-iterate on the question... are there other
> available preconditioners already ported to GPU, which are not based on AMG
> (which is typically not suitable for my convection-dominated CFD problems)
> and apart from BICGSTABCUSP?
>

I believe that the txpetscgpu package has triangular solves for the GPU.

BiCGStab is a Krylov method.

   Matt


> Andrea
>
>
> On May 5, 2013, at 9:53 PM, Matthew Knepley <knepley at gmail.com> wrote:
>
> On Sun, May 5, 2013 at 2:48 PM, Andrea Lani < <andrea.lani at gmail.com>
> andrea.lani at gmail.com> wrote:
>
>> Dear Developers,
>>
>> Could you please tell me the list of preconditioners for non-symmetric
>> systems fully ported to multi-GPU and available in the current development
>> version?
>>
>
> In my opinion, there are no truly multi-GPU preconditioners anywhere. We
> can imagine them, like AMG with Chebychev smoothers, but
> I have not really seen any of them reliably work. The CUSP SA-AMG is the
> closest one in this category, and Steve Dalton is working on
> it this summer at ANL.
>
>   Matt
>
>
>> Thanks in advance
>>
>> Andrea
>
>
>
>
> --
> 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
>
>


-- 
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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