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

Samuel Trahan - NOAA Affiliate samuel.trahan at noaa.gov
Mon May 14 14:26:33 UTC 2018

Hi all,

As is expected on a day like today, someone was wandering aimlessly on the
DC Metro red line tracks between stations, and the trains couldn't move for
about a half hour while the authorities coaxed him out.  I'm starting the
commit now, and I expect to finish around 11-11:30 Eastern.

Note to self: in the future, schedule NEMS commits in the afternoon.

Sam Trahan

On Mon, May 14, 2018 at 7:58 AM, Samuel Trahan - NOAA Affiliate <
samuel.trahan at noaa.gov> wrote:

> 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.
> Sincerely,
> 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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