[petsc-users] about MatTranspose

[Matthew Knepley]

On Tue, Aug 30, 2011 at 10:59 PM, Likun Tan <likunt at andrew.cmu.edu> wrote:

>
> Dear all,
>
> Can MatTranspose be used on non-squra matrix? I have a matrix with size
> 200*27, and i want to get the tranpose of it.
>

I assume you are talking about dense matrices. If so, yes.


> Second question is, if the 200*27 is partitioned by row, how is the
> tranpose stored in each processor? Is it stored by column?
>

For MPIDENSE, you cannot in-place transpose unless it is square. Otherwise,
you
provide the transpose matrix, so you determine the layout.

   Matt


> Thanks,
> Likun
>
>


-- 
What most experimenters take for granted before they begin their experiments
is infinitely more interesting than any results to which their experiments
lead.
-- Norbert Wiener
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