[petsc-users] petsc 3.4.3 to 3.5.3

[Barry Smith]

> On Apr 20, 2015, at 4:06 AM, <Carol.Brickley at awe.co.uk> <Carol.Brickley at awe.co.uk> wrote:
> 
> All,
>  
> I am switching to petsc 3.5.3 and finding some differences with 3.4.3. KSPSetOperators no longer has the MatStructure argument. I see for SAME_PRECONDITIONER that you
> now use KSPSetReusePreconditioner with flag set to tru before the call to set to true KSPSetOperators. Is there any need to do anything for the other flags, eg; DIFFERENT_NONZERO_PATTERN, SAME_ NONZERO_PATTERN
> or is that now tracked by the Mat object as suggeste in the documentation?

   You do not have to set any other options; the matrix now keeps track itself of wether the nonzero pattern has changed.

  Barry

>  
> Thanks,
>  
> Carol
>  
> Dr Carol Brickley 
> BSc,PhD,ARCS,DIC,MBCS
>  
> Senior Software Engineer
> Applied Computer Science
> DS+T,
> AWE
> Aldermaston
> Reading
> Berkshire
> RG7 4PR
>  
> Direct: 0118 9855035
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