[petsc-users] Question on MatMatmult

[Barry Smith]

  You can use MatConvert()


> On May 29, 2024, at 10:53 AM, Frank Bramkamp <bramkamp at nsc.liu.se> wrote:
> 
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> 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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