[petsc-users] error in mpiaij with unkown soruce

[Matthew Knepley]

On Tue, Jul 1, 2014 at 11:00 AM, Thorsten Kersting <
Thorsten.Kersting at itp1.uni-stuttgart.de> wrote:

> Hello!
>
> thanks for the quick answer.
>
> Yes the error is reproducible and happens at the same place.
>
> I only set values on those processes, on which they are stored (I
> calculate them directly before setting them). And with every matrix I do
> this only once, so if i understand correctly, MAT_FINAL_ASSAMEBLY is
> sufficient. but i can try and see if it is different with
> MAT_FLUSH_ASSEMBLY.
>

I recommend using valgrind on this. Its possible that you have overwritten
memory.

  Thanks,

     Matt


> On 07/01/2014 10:43 AM, Jed Brown wrote:
>
>> Thorsten Kersting <Thorsten.Kersting at itp1.uni-stuttgart.de> writes:
>>
>>  Hello everyone!
>>>
>>> I want so solve eigenvalues of a matrix, which has a complicated
>>> structure, with SLEPC. I get the following error while setting up the
>>> EPS Problem. But I dont understand the error, and how to fix it. Does
>>> anyone have an idea? Or do you need more information (and which
>>> information exactly)?
>>>
>> Is the error reproducible and if so, does it happen at the same place?
>>
>> Is it possible that you are setting many off-process values?  You might
>> need to assemble sooner with MAT_FLUSH_ASSEMBLY so that the stash does
>> not grow too large for whatever resource limits may have been placed on
>> your job.
>>
>
>


-- 
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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