[mpas-developers] plans for parallel i/o?

[Michael Duda]

Hi, Mark.

I've been experimenting with the PIO library that is used in CESM, and I
think a first-cut implementation should be pretty straightforward; the
biggest issue may be how we make the transition to PIO in the trunk.
After we commit our non-hydrostatic code to the trunk (hopefully later
today!), I'm planning to refresh the 'pio' branch that I created a
couple of weeks ago; if all goes well, that branch should have
functional parallel I/O by early next week, at which time we can begin
to use it in a testing mode.

Cheers,
Michael


On Thu, Nov 10, 2011 at 09:17:13AM -0700, Mark Petersen wrote:
> MPAS developers,
> 
> The ocean model is now in a state where we are testing high resolution 
> simulations.  It appears that we are limited by the lack of parallel 
> i/o.  I think I've seen a few commits on this.  Micheal, are there plans 
> for parallel i/o for the mpas framework?
> 
> When I run with our 15km ocean mesh, which has
>          nCells = 1848103 ;
>          nEdges = 5578724 ;
> I get an  'insufficient virtual memory' error at the time of the first 
> output write.
> 
> Thanks,
> Mark
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