memory problem with superlu_dist

Hong Zhang hzhang at mcs.anl.gov
Wed Jun 17 15:35:09 CDT 2009


This error is anticipated ;-(
Direct solvers require very large memory for numerical
factorization. You may consult superlu or mumps developers
for feasibility of your application.

Hong

On Wed, 17 Jun 2009, Matthew Knepley wrote:

> It seems clear that MUMPS ran out of memory for the factor. BG is a very
> memory-light
> machine.
>
>  Matt
>
> On Wed, Jun 17, 2009 at 2:53 PM, Yann Tambouret <yannpaul at bu.edu> wrote:
>
>> Hi,
>>
>> While trying to use superlu_dist through the PETSc interface, I received
>> the following error:
>>
>> Malloc fails for C[]. at line 614 in file pdgssvx.c
>>
>> This was for a system with ~16 million unknowns on a Bluegene machine run
>> with 512 processors. Has anyone seen this error before?
>>
>> Thanks,
>>
>> Yann
>>
> -- 
> 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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