[Ncep.list.nems.announce] impending NEMS commit

Samuel Trahan - NOAA Affiliate samuel.trahan at noaa.gov
Mon May 14 11:58:30 UTC 2018

Hi all,

The previously mentioned NEMS commit will go in as scheduled, though it may
be closer to 10:30 Eastern if the DC Metro is in a bad mood.  There are two
further changes to NEMSfv3gfs after the last batch of FV3 commits:

1. On sJet and vJet, the C768 no longer fits in 16 cores per node.  I  have
reduced it to 14 cores per node.

2. On WCOSS Phase 2, some of the tests now take slightly over a half hour
(sometimes).  I reverted the queue to dev2 and wallclock limit to 45
minutes.  If you feel like baby-sitting the workflow, you can switch back
to debug2 and 30 minutes, but you will have to keep running "rtrewind" on
the jobs that hit their wallclock limit.  Ultimately, you might finish the
test faster that way, but it will be quite tedious.

Also, please note that on GAEA and Jet, you must specify which partition or
set of partitions to use through the "--platform" option.  If you don't do
this, NEMSCompsetRun will tell you the available platforms, and how to
request one.  I'm using GAEA C3 on GAEA, and I test in s/vJet and xJet on
Jet.  Presently, t/uJet do not work with NEMSfv3gfs because that app needs
to be recompiled with new libraries.

Sam Trahan

On Thu, May 10, 2018 at 5:12 PM, Samuel Trahan - NOAA Affiliate <
samuel.trahan at noaa.gov> wrote:

> Hi all,
> I will be committing some long-awaited NEMS changes Monday at 10 AM if I
> don't hear back from any naysayers.  The overview of the changes is below.
> All tests have passed except a final retest of NEMSfv3gfs on GAEA, which
> should finish soon.  (It passed twice, so I don't expect the third to
> fail.)  Please let me know if you plan on committing answer-changing
> results to a Supported app before then.
> 1. GAEA support is added to NEMSCompsetRun and NEMSAppBuilder.  The
> NEMSfv3gfs compsets all work on GAEA C3 and C4.
> 2. Jet IMPI support in NEMSfv3gfs, plus support for C768 on Jet.  Both
> xJet and the s+v Jet pair are supported and have separate baselines.
> 3. Pass $CFLAGS down to NEMS C code so we can add uJet and tJet support.
> It will be a while before the underlying libraries are recompiled; until
> then we cannot support anything on t or u Jet.
> 4. Add FV3-MOM6-CICE5 to the list of Supported apps.
> Relevant locations:
> NEMS branch: gaea-support
> App branches: gaea-jet-support
> URL with test results:
>     http://www.emc.ncep.noaa.gov/projects/nems-commit/gaea-jet-support/
> I may not be able to fill in the "GAEA results" box in that website
> because GAEA is unable to contact dmzgw right now.  However, the logs will
> be in the NEMSfv3gfs gaea-jet-support branch once the tests complete.
> Sincerely,
> Sam Trahan
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