Update pelayout on pm-cpu for ne4 scream tests

[ndkeen]

For ne4 cases, use only 96 tasks as scream requires no more MPI's than number of elements.
SMS.ne4pg2_oQU480.F2010-SCREAMv1-MPASSI.pm-cpu_intel

Unrelated: Rename a machinefile to reflect machine name for gcp12 builds with scream.
For this change it fixes E3SM-Project/scream#3036 (at least the build issue)

[bfb]

[mahf708]

Thank you!

[github-actions]

PR Preview Action v1.4.8
🚀 Deployed preview to https://E3SM-Project.github.io/E3SM/pr-preview/pr-6676/
on branch gh-pages at 2024-10-10 22:37 UTC

[rljacob]

Why would EAMxx complain about this and not EAM?

[ndkeen]

I have asked that as well. Must be different paths, but both repos have same:

homme/src/share/prim_driver_base.F90

    ! we want to exit elegantly when we are using too many processors.                                                                     
    if (nelem < par%nprocs) then
       call abortmp('Error: too many MPI tasks. set dyn_npes <= nelem')
    end if

It was so elegant. The most elegant.

[rljacob]

This changed the layout for several e3sm_integration tests:
ERP_Ln9.ne4pg2_oQU480.WCYCL20TRNS-MMF1.pm-cpu_intel.allactive-mmf_fixed_subcycle
ERS.ne4pg2_oQU480.WCYCL1850NS.pm-cpu_intel
ERS_Vmoab.ne4pg2_oQU480.WCYCL1850NS.pm-cpu_intel
NCK.ne4pg2_oQU480.WCYCL1850NS.pm-cpu_intel

If you want to keep this, the Vmoab test diffs needs to be blessed and those all have namelist diffs to bless.

[ndkeen]

Makes sense. I could try to make another entry in pelayout XML to match ne4 with SCREAM, but it might be best to just run all ne4 cases with 96 MPI's on pm-cpu. What do we think? Before this change, ne4 tests would have used a full node, which is 128 MPI's on pm-cpu.

[rljacob]

Its fine just making the change for all cases.