[petsc-users] Creating explicit matrix scatter

[Thomas Witkowski]

Am 08.12.2012 15:37, schrieb Jed Brown:
> How about MatPermute() in a suitable place?
Not really. I thing, I will try to solve the problem differently and 
avoid this matrix construction.

Thomas

>
> I don't know why you would need such a thing.
>
> On Sat, Dec 8, 2012 at 6:33 AM, Thomas Witkowski 
> <thomas.witkowski at tu-dresden.de 
> <mailto:thomas.witkowski at tu-dresden.de>> wrote:
>
>     I checked the documentation of MatGetSubMatrix() and found the
>     following:
>
>     "The rows in isrow will be sorted into the same order as the
>     original matrix on each process."
>
>     For my case, this will be wrong. I need to say each task exactly
>     which row from the old matrix should be which row in the new
>     matrix. Any other possibility to do this?
>
>

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