distribution of matrix and vector

Yixun Liu enjoywm at cs.wm.edu
Sun Feb 15 18:20:32 CST 2009


Barry Smith wrote:
>
> Yes. When you do not provide the local sizes then
> PetscSplitOwnership() is used to chose a value, thus it matches for
> different vectors and matrices.
>
> Barry
>
> On Feb 15, 2009, at 5:07 PM, Yixun Liu wrote:
>
>> Hi,
>> VecSetSizes(vec, PETSC_DECIDE, n);
>> MatSetSizes(mat, PETSC_DECIDE, PETSC_DECIDE, n,n);
>>
>> If the matrix is square can I conclude that the vec and mat have the
>> same distribution.
>>
>> Thanks
>> Yixun
>>
>
If the matrix is not square, the distribution should be different. Right?


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