[petsc-users] Error - Out of memory. This could be due to allocating too large an object or bleeding by not properly ...

[TAY wee-beng]

On 24/2/2016 9:12 PM, Matthew Knepley wrote:
> On Wed, Feb 24, 2016 at 1:54 AM, TAY wee-beng <zonexo at gmail.com 
> <mailto:zonexo at gmail.com>> wrote:
>
>
>     On 24/2/2016 10:28 AM, Matthew Knepley wrote:
>>     On Tue, Feb 23, 2016 at 7:50 PM, TAY wee-beng <zonexo at gmail.com
>>     <mailto:zonexo at gmail.com>> wrote:
>>
>>         Hi,
>>
>>         I got this error (also attached, full) when running my code.
>>         It happens after a few thousand time steps.
>>
>>         The strange thing is that for 2 different clusters, it stops
>>         at 2 different time steps.
>>
>>         I wonder if it's related to DM since this happens after I
>>         added DM into my code.
>>
>>         In this case, how can I find out the error? I'm thinking
>>         valgrind may take very long and gives too many false errors.
>>
>>
>>     It is very easy to find leaks. You just run a few steps with
>>     -malloc_dump and see what is left over.
>>
>>        Matt
>     Hi Matt,
>
>     Do you mean running my a.out with the -malloc_dump and stop after
>     a few time steps?
>
>     What and how should I "see" then?
>
>
> -malloc_dump outputs all unfreed memory to the screen after 
> PetscFinalize(), so you should see the leak.
> I guess it might be possible to keep creating things that you freed 
> all at once at the end, but that is less likely.
>
>    Matt
Hi,

I got the output. I have zipped it since it's rather big. So it seems to 
be from DM routines but can you help me where the error is from?

Thanks.
>
>>
>>         -- 
>>         Thank you
>>
>>         Yours sincerely,
>>
>>         TAY wee-beng
>>
>>
>>
>>
>>     -- 
>>     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
>
>
>
>
> -- 
> 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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