[CIG-SHORT] Million elements generate in Cubit, and run in pylith

[Matthew Knepley]

On Sat, May 24, 2014 at 1:35 PM, Ma, Xiao <xiaoma5 at illinois.edu> wrote:

>  Hi,
> I have two problems .
> First I tried to output like 16,000,000 elements mesh from Trelis (or
> cubit)(which is a large number of elements) , however it failed, give the
> error "interrupted, cubit exit" , is there a way to generate this large
> number elements mesh?
>

It depends on the memory in your machine. Obviously your machine cannot
handle that large of a mesh. I also
think it is a poor workflow, and you should consider using the regular
parallel mesh refinement that is detailed
in the tutorial examples.


> Second, then I have successfully generated a 25 km x 25 km domain with
> mesh size 10m uniformly from Cubit, however I fail to run it in pylith ,
> even I use multi cores to run , --nodes=8;
> Error message"mpirun:exit 59" How should I run this big problem on pylith?
>

The snippet of an error message above cannot possibly help anyone. You have
to send
the full error message if you want us to be able to help you.

Also, this is science, so we have to treat it in a systematic fashion. Did
you

  a) Confirm that you can run a smaller version of the same problem?

  b) On two processes?

  c) On eight processes?

  d) The full version on 2 processes?

   Matt


> Thank you
> Xiao
>
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-- 
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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