[petsc-users] PetscLayoutCreate for Fortran

[Matthew Knepley]

On Tue, May 13, 2014 at 11:42 AM, Hossein Talebi
<talebi.hossein at gmail.com>wrote:

>
> I have already decomposed the Finite Element system using Metis. I just
> need to have the global rows exactly like how I define and I like to have
> the answer in the same layout so I don't have to move things around the
> processes again.
>
> No, I don't need it for something else.
>

PetscLayout is only for contiguous sets of indices. If you want to
distribute them, you need to use VecScatter.

  Thanks,

    Matt


> Cheers
> Hossein
>
>
>
>
> On Tue, May 13, 2014 at 6:36 PM, Matthew Knepley <knepley at gmail.com>wrote:
>
>> On Tue, May 13, 2014 at 11:07 AM, Hossein Talebi <
>> talebi.hossein at gmail.com> wrote:
>>
>>> Hi All,
>>>
>>>
>>> I am using PETSC from Fortran. I would like to define my own layout i.e.
>>> which row belongs to which CPU since I have already done the domain
>>> decomposition.  It appears that  "PetscLayoutCreate" and the other
>>> routine do this. But in the manual it says it is not provided in Fortran.
>>>
>>> Is there any way that I can do this using Fortran? Anyone has an example?
>>>
>>
>> You can do this for Vec and Mat directly. Do you want it for something
>> else?
>>
>>   Thanks,
>>
>>      Matt
>>
>>
>>> Cheers
>>> Hossein
>>>
>>>
>>
>>
>> --
>> 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
>>
>
>
>
> --
> www.permix.org
>



-- 
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
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20140513/72469ff0/attachment.html>