[petsc-users] insufficient virtual memory?

[Matthew Knepley]

On Wed, Feb 17, 2021 at 8:23 PM Park, Heeho via petsc-users <
petsc-users at mcs.anl.gov> wrote:

> Hi PETSc developers,
>
>
>
> Have you seen this error message?
>
>
>
>       forrtl: severe (41): insufficient virtual memory
>

I believe this is an OS setting, independent of the code itself, which
explains the difference you see between
machines. This also suggests asking the local sysadmin for your cluster.

  Thanks,

     Matt


>
>
> We are running about 36 million degrees of freedom ( ~ 2.56 GB) and it is
> failing with the error message on our HPC systems.
>
> Ironically, it runs on our laptop (super slow.)
>
>
>
>       type: seqbaij
>
>       rows=46251272, cols=46251272
>
>       total: nonzeros=323046210, allocated nonzeros=323046210
>
>       total number of mallocs used during MatSetValues calls=0
>
>           block size is 1
>
>
>
> Does anyone have experience encountering this problem?
>
>
>
> Thanks,
>
>
>
> Heeho Daniel Park
>
> ! ------------------------------------ !
> Sandia National Laboratories
>
> Org: 08844, R&D
>
> Work: 505-844-1319
> ! ------------------------------------ !
>
>
>


-- 
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

https://www.cse.buffalo.edu/~knepley/ <http://www.cse.buffalo.edu/~knepley/>
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