[petsc-users] Question on MatMatmult

[Frank Bramkamp]

Ah ok,

Then I will have a look at matconvert. 
And then maybe later switch to AIJ as well.


Thanks of the help, Frank


> On 29 May 2024, at 16:57, Barry Smith <bsmith at petsc.dev> wrote:
> 
> 
>   You can use MatConvert()
> 
> 
>> On May 29, 2024, at 10:53 AM, Frank Bramkamp <bramkamp at nsc.liu.se> wrote:
>> 
>> This Message Is From an External Sender
>> This message came from outside your organization.
>> Hello Hong,
>> 
>> Thank you for the clarification.
>> If I already have a BAIJ matrix format, can I then convert it later into AIJ format as well ?!
>> In that case I would have two matrices, but that would be ok for testing.
>> I think that you sometimes convert different matrix formats into each other ?!
>> 
>> 
>> Since I typically have BAIJ format, I also use a blocked ILU, which would turn into a point wise ILU
>> for an AIJ matrix. That is why I typically have the BAIJ format.
>> 
>> Otherwise, I have to change it into an AIJ format from the beginning.
>> 
>> 
>> Thanks for the quick help,
>> 
>> Frank
>> 
>> 
>> 
>> 
> 

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