[petsc-dev] MatMFFDSetType

[Adrian Croucher]

Further to this, I debugged into PetscObjectTypeCompare().

It's returning PETSC_FALSE because the type name of the variable mat is 
"seqbaij" (and I guess would normally be something like "mpibaij" if 
running in parallel outside gdb), which doesn't match with MATMFFD (= 
"mffd").

Does that mean I should be setting the matrix type to MATMFFD to get 
this to work?

- Adrian


On 24/06/16 16:35, Adrian Croucher wrote:
> On 24/06/16 15:58, Adrian Croucher wrote:
>>
>> I will try debugging into MatMFFDSetType() and seeing what it's doing 
>> when I pass in "ds".
>>
>
> I did this. In MatMFFDSetType() (mffd.c: 116), it executes
>
>   ierr = 
> PetscObjectTypeCompare((PetscObject)mat,MATMFFD,&match);CHKERRQ(ierr);
>
> which returns match = PETSC_FALSE. The next line
>
>   if (!match) PetscFunctionReturn(0);
>
> means it just returns out of there without doing anything.
>
> - Adrian

-- 
Dr Adrian Croucher
Senior Research Fellow
Department of Engineering Science
University of Auckland, New Zealand
email: a.croucher at auckland.ac.nz
tel: +64 (0)9 923 84611

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