[petsc-users] MatCreateTranspose

[Carl-Johan Thore]

Pierre, I see that you've already done a merge request for this. Thanks!
I have tested this and it works nicely in my application
/Carl-Johan

On Wed, Apr 10, 2024 at 8:24 AM Carl-Johan Thore <carljohanthore at gmail.com>
wrote:

>
>
> On Tue, Apr 9, 2024 at 5:31 PM Pierre Jolivet <pierre at joliv.et> wrote:
>
>>
>> On 9 Apr 2024, at 4:19 PM, Carl-Johan Thore <carljohanthore at gmail.com>
>> wrote:
>>
>> This Message Is From an External Sender
>> This message came from outside your organization.
>> Thanks for the suggestion. I don't have a factored matrix (and can't
>> really use direct linear solvers) so MatSolveTranspose doesn't seem to
>> be an option.
>> I should have mentioned that I've also tried KSPSolveTranspose but that
>> doesn't work with pcredistribute
>>
>>
>> I’m not a frequent PCREDISTRIBUTE user, but it looks like
>> https://urldefense.us/v3/__https://petsc.org/release/src/ksp/pc/impls/redistribute/redistribute.c.html*line332__;Iw!!G_uCfscf7eWS!d3xUyKqZovzqGxg2_Ek4FStdTXsvnabp6mvY0kSRCCRZXZ6y6pd8MUnEi9sZR8QjNGiwWLxXy3N08YLxKwIcWBQ9Jbc-Qg$  could
>> be copy/paste’d into PCApplyTranspose_Redistribute() by just changing a
>> MatMult() to MatMultTranspose() and KSPSolve() to KSPSolveTranspose().
>> Would you be willing to contribute (and test) this?
>> Then, KSPSolveTranspose() — which should be the function you call — will
>> work.
>>
>> Thanks,
>> Pierre
>>
>
> Thanks, that sounds promising. Yes, I'll try to make a contribution
> /Carl-Johan
>
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