[Ncep.list.nems.announce] NEMSAppBuilder problems and fixes

[Samuel Trahan - NOAA Affiliate]

Hi all,

I'm including one more NEMSAppBuilder update in my upcoming commit.
Jessica Meixner gave me an update needed to build newer versions of WW3.
Testing is underway.  I'm doing this under the "underscoreww3" branch in
NEMS VLAB Git.

Sincerely,
Sam Trahan

On Thu, Feb 1, 2018 at 3:08 PM, Samuel Trahan - NOAA Affiliate <
samuel.trahan at noaa.gov> wrote:

> Hi all,
>
> Two problems in the NEMSAppBuilder are causing a lot of trouble right
> now.  I held off fixing these issues because it will be disruptive to
> development, and we've had too many development disruptions already.
>
> Specifically:
>
> 1. The NEMSAppBuilder $FULL_MACHINE_ID used to find modulefiles and conf
> files has underscores on WCOSS Cray (wcoss_cray) but dots on the IBM parts
> of WCOSS (wcoss.phase1, wcoss.phase2).  This was done to match the strange
> mix of conventions the various apps were using when the NEMSAppBuilder was
> last updated.
>
> 2. The NEMSAppBuilder does not delete the configuration files before
> running NEMS/src/configure.  This can cause it to inadvertently use old
> configuration information if NEMS/src/configure fails.
>
> It turns out, for several weeks now, the NEMSAppBuilder has not been able
> to build the NEMSfv3gfs on WCOSS phase 1 and phase 2 due to bug #1 listed
> above.  The reason nobody noticed this (including the nightly tests) is
> that the NEMSfv3gfs compile.sh was run first, for earlier compsets in the
> same test suite.  That compile.sh left behind valid modules.nems,
> externals.nems, and ESMFVersionDefine.h.  The NEMSAppBuilder was run next,
> to test the fv3_appbuilder compset.  It failed to run configure because it
> was looking for configure.fv3.wcoss.phase2 (or phase1) which did not
> exist.  However, the NEMSAppBuilder didn't delete the configuration
> information compile.sh left behind, so the build continued as if nothing
> had gone wrong (bug #2 listed above).
>
> It is possible that all apps will need to make minor changes to their
> compsets and appbuilder files as a result of fixing these two bugs.  I'm
> going to try this myself on the supported apps first and report the results.
>
> Sincerely,
> Sam Trahan
>
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