Complete the FATES-CLM nitrogen coupling by slevis-lmwg · Pull Request #3409 · ESCOMP/CTSM

slevis-lmwg · 2025-08-11T21:43:10Z

Description of changes

For now see the issue #3378

Corresponding mods on the FATES side:
NGEET/fates#1472

Nutrient enabled FATES handbook
FATES CLM N coupling

Specific notes

Contributors other than yourself, if any:
@rgknox @adrifoster @wwieder

CTSM Issues Fixed (include github issue #):
#3378

Are answers expected to change (and if so in what way)?
For non-fates tests expect roundoff diffs due to a change in the order of operations in CNNDynamicsMod.F90 as documented below.

Any User Interface Changes (namelist or namelist defaults changes)?
Yes, see changes to CLMBuildNamelist and namelistdefaults.

Does this create a need to change or add documentation? Did you do so?
Yes, no.

Todo: add a modification to the PRT2 test, make sure that prescribed P uptake is set to 10. This will ensure that there are no P limitations in fates, when FATES becomes coupled to CLM's N cycle (in future PR). i:e: fates_cnp_prescribed_puptake=10

Initial testing performed
...with the first two commits in this PR:

PASS ERS_D_Ld30.1x1_brazil.I2000Clm60FatesCrujraRs.derecho_intel.clm-FatesColdPRT2
PASS ERS_D_Ld30.1x1_brazil.I2000Clm60FatesCrujraRs.derecho_intel.clm-FatesCold

Later comments point out that these two tests were inadequate at catching problems, and that I switched to two other tests.

PASS ERS_D_Ld30.1x1_brazil.I2000Clm60FatesCrujraRs.derecho_intel.clm-FatesColdPRT2 FAIL ERS_D_Ld30.1x1_brazil.I2000Clm60FatesCrujraRs.derecho_intel.clm-FatesColdPRT2--clm-mimicsFatesCold--clm-nofireemis The latter needs "nofireemis" to work with Fates, but it then dumps core in line 1180 SoilBiogeochemDecompCascadeMIMICSMod.F90

...calculating these variables: nf_soil%decomp_npools_sourcesink_col nf_soil%fates_litter_flux

slevis-lmwg · 2025-08-13T23:40:21Z

With the latest commit, I repeated the two earlier tests and added another to check whether answers have changed from the baseline:

PASS ERS_D_Ld30.1x1_brazil.I2000Clm60FatesCrujraRs.derecho_intel.clm-FatesColdPRT2
PASS ERS_D_Ld30.1x1_brazil.I2000Clm60FatesCrujraRs.derecho_intel.clm-FatesCold
FAIL ERP_Ld9.f45_f45_mg37.I2000Clm50FatesRs.derecho_intel.clm-FatesColdAllVars -c /glade/campaign/cgd/tss/ctsm_baselines/ctsm5.3.065

The latter fails in case2, after reading the restart file, with a N balance error.

UPDATE

See below for suggestions to resolve FAIL
Add new test ERP_Ld9.f45_f45_mg37.I2000Clm50FatesRs.derecho_intel.clm-FatesColdPRT2 (sanity check first that it meets requirements set forth in the fourth checkbox here, which I think means pointing to an alternate fates paramfile)
Later comment explains why I decided to revert to preexisting ERS tests and skip adding this ERP test.

slevis-lmwg · 2025-08-26T20:48:21Z

Enabled fixation and ran the same tests:

PASS ERS_D_Ld30.f45_f45_mg37.I2000Clm50FatesCruRsGs.derecho_intel.clm-FatesColdPRT2 -c /glade/campaign/cgd/tss/ctsm_baselines/fates-sci.1.84.0_api.40.0.0-ctsm5.3.066
PASS ERS_D_Ld30.f45_f45_mg37.I2000Clm50FatesCruRsGs.derecho_intel.clm-FatesColdLUH2 -c /glade/campaign/cgd/tss/ctsm_baselines/fates-sci.1.84.0_api.40.0.0-ctsm5.3.066

PRT2 still b4b with the baseline.
LUH2 now DIFF from the baseline.

PASS The same tests with the code change for harvest (same results relative to the baseline).

...for fates_parteh_mode == 2

slevis-lmwg · 2025-09-20T00:55:38Z

Worked on the next checkbox in the issue (#3378), submitted the same tests, and after some troubleshooting:
PASS PRT2 and b4b with the baseline.
PASS LUH2 and DIFF from the baseline as before.

These variables originate in fates, so this renaming requires the same renaming in fates; I will open the corresponding PR very soon

slevis-lmwg · 2025-09-23T00:04:50Z

OK ./build-namelist_test.pl
OK ./run_sys_tests -s fates -c fates-sci.1.84.0_api.40.0.0-ctsm5.3.066/ --skip-generate
REDO ./run_sys_tests -s aux_clm -c ctsm5.3.066 --skip-generate

Notes:

Gnu and nvhpc tests needed a bug-fix that intel didn't catch (next commit).
Then the fates test-suite worked (I didn't repeat aux_clm for now)
Many tests DIFFer from the baseline.
The PRT2 test had the expected NLCOMP change, though no DIFFs from the baseline (even after rebuilding/rerunning):

  BASE: suplnitro = 'ALL'
  COMP: suplnitro = 'NONE'

slevis-lmwg · 2025-09-23T20:21:06Z

Updated the fates paramfile (see next commit) and submitted these two again

./create_test ERS_D_Ld30.f45_f45_mg37.I2000Clm50FatesCruRsGs.derecho_intel.clm-FatesColdLUH2 -c /glade/campaign/cgd/tss/ctsm_baselines/fates-sci.1.84.0_api.40.0.0-ctsm5.3.066
./create_test ERS_D_Ld30.f45_f45_mg37.I2000Clm50FatesCruRsGs.derecho_intel.clm-FatesColdPRT2 -c /glade/campaign/cgd/tss/ctsm_baselines/fates-sci.1.84.0_api.40.0.0-ctsm5.3.066

The first (LUH2) same as before (DIFF from baseline) since nothing changed for it.
The second (ERS_D_Ld30.f45_f45_mg37.I2000Clm50FatesCruRsGs.derecho_intel.clm-FatesColdPRT2.C.20250923_141838_qjxqou) now:

DIFF from baseline and
FAIL COMPARE_base_rest suggesting variable(s) missing from restart, I suspect

rosiealice · 2026-03-30T15:33:39Z

Thanks @slevis-lmwg & @rgknox , that's good to know. We will circle back to this once Shelby is spun up on life in general after Easter (she only just arrived about a week ago...)

rgknox · 2026-03-30T16:29:18Z

I'm investigating the ERS restart test failure and tried two tests. In the first test, I forced litter flux from FATES to CLM to be zero. This did not have any impact on restarts, suggesting that the bug is either not related to restarting litter fluxes, or simply is not relegated to restarting litter fluxes. I also forced the fine-root profile that fates sends to the nitrogen allocation scheme to zero, and this did generate b4b restarts. My next test will be to go into the allocation code, and set the fates-side boundary conditions to constants, and see if that works. That will tell us if the problem is restarting clm-side allocation/decomposition variables, of if its fates-side restarting of boundary conditions.. cc @slevis-lmwg

… structure

restarting uptake fluxes

slevis-lmwg · 2026-04-06T22:57:46Z

After the latest updates, I started by submitting SMS.f10_f10_mg37.I2000Clm50BgcCrop.derecho_intel.clm-crop.C.20260406_124851_rch8g6 and this passed. I got pulled in other directions for the day, but my plan is to

confirm the other tests work...

FAIL PRT2_synthN RUN

forrtl: severe (408): fort: (2): Subscript #1 of the array PLANT_NH4_UPTAKE_FLUX has value 2 which is greater than the upper bound of 1
cesm.exe           0000000001DFE98F  set_restart_vecto        2713  FatesRestartInterfaceMod.F90
cesm.exe           000000000099C9D5  restart                  1935  clmfates_interfaceMod.F90
cesm.exe           0000000000939B38  clm_instrest              620  clm_instMod.F90
cesm.exe           0000000000D32E1C  restfile_write            132  restFileMod.F90
cesm.exe           0000000000917E69  clm_drv                  1529  clm_driver.F90
cesm.exe           0000000000856DC4  modeladvance              913  lnd_comp_nuopc.F90

FAIL LUH2 RUN turns out to expected as per #3789

negative area           1           1           1  -999.0
ENDRUN: ERROR in EDInitMod.F90 at line 608

PASS PRT2, just no baseline to compare
PASS PRT2_suplnAll
PASS SMS (as already mentioned above the bullet)

resolve failures, then start a full aux_clm test

slevis-lmwg · 2026-04-07T23:25:01Z

@rgknox two tests failed (PRT2_synthN and LUH2) and three passed. See error msgs in the previous post.

Looking into the first of these. I think we set allocate(bc_in%plant_nh4_uptake_flux(1,1)) in main/FatesInterfaceMod.F90 because coupled_p_uptake and coupled_n_uptake are false. The failure then occurs in main/FatesRestartInterfaceMod.F90 in this loop:

icomp = 0
do_patch: do while(associated(cpatch))
   do while(associated(ccohort))
      if (hlm_parteh_mode == carbon_nitrogen_phosphorus) then
         icomp=icomp+1
         this%rvars(ir_nh4uptakeflux_co)%r81d(io_idx_co) = bc_in(s)%plant_nh4_uptake_flux(icomp,1)

My first inclination is to move icomp = 0 into the first do loop and try the tests again. So far:

FAIL PRT2_synthN RUN
FAIL LUH2 RUN expected
FAIL PRT2 COMPARE_base_rest
FAIL PRT2_suplnAll COMPARE_base_rest
PASS SMS

so my first intuition was wrong, and I will restore FatesRestartInterfaceMod.F90 and try changing the allocate statement in FatesInterfaceMod.F90.

PASS PRT2_synthN RUN
FAIL LUH2 RUN expected
PASS PRT2 COMPARE_base_rest
PASS PRT2_suplnAll COMPARE_base_rest
PASS SMS

Fixed!

slevis-lmwg · 2026-04-08T22:37:55Z

Starting aux_clm on derecho + izumi:
./run_sys_tests -s aux_clm -c ctsm5.4.029 --skip-generate

RUN failures to investigate (none on izumi) in /glade/derecho/scratch/slevis/tests_0408-165737de

ERI_D_Ld9.f45_f45_mg37.I2000Clm60FatesSpCruRsGs.derecho_intel.clm-FatesColdSatPhenCamLndTuningMode
ERP_P128x2_Ld30.f45_f45_mg37.I2000Clm60FatesSpCruRsGs.derecho_intel.clm-FatesColdSatPhen
ERP_P64x2_D_Ld5.f10_f10_mg37.I1850Clm50Bgc.derecho_intel.clm-ciso--clm-matrixcnOn_ignore_warnings
SMS.f45_f45_mg37.I2000Clm60FatesSpRsGs.derecho_nvhpc.clm-FatesColdSatPhen

ERP_P64 reran four times and then a fifth after a clean build and it continues to fail, so I'm abandoning, even though an ERP_D test with the same "matrix" error passed with one rerun.
ERI, ERP_P128, SMS give ERROR: fates_parteh_mode=carbon_only must have suplnitro set to suplnAll. ERROR in controlMod.F90 at line 504. Erik and I looked at CLMBuildNamelist.pm and resolved quickly.
Erik suggested I add a build-namelist_test.pl test confirming this failure triggers in the build phase.

Also, should we expect the DIFFs from baseline in the following tests (some also on izumi, but I did not list them) due to the diff between sci.1.91.3_api.43.1.0-25-g21c1bcbe and the baseline sci.1.91.1_api.43.1.0? Though I see diffs in non-Fates cases, too. Erik suggests introducing the changes in a b4b step followed by a non-b4b step if possible.

    FAIL ERI_D_Ld9.f10_f10_mg37.I1850Clm45Bgc.derecho_gnu.clm-default BASELINE ctsm5.4.029: DIFF
    FAIL ERP_D_P64x2_Ld3.f10_f10_mg37.I2000Clm45BgcCrop.derecho_gnu.clm-no_subgrid_fluxes BASELINE ctsm5.4.029: DIFF
    FAIL ERS_D_Ld20.f45_f45_mg37.I2000Clm50FatesRs.derecho_gnu.clm-FatesColdTwoStreamNoCompFixedBioGeo BASELINE ctsm5.4.029: DIFF
    FAIL ERS_D_Ld6.f10_f10_mg37.I1850Clm45BgcCrop.derecho_gnu.clm-clm50CMIP6frc BASELINE ctsm5.4.029: DIFF
    FAIL LGRAIN2_Ly2_P128x1.f10_f10_mg37.I1850Clm45BgcCrop.derecho_gnu.clm-ciso--clm-cropMonthOutput BASELINE ctsm5.4.029: DIFF
    FAIL LREPRSTRUCT_Ly2_P128x1.f10_f10_mg37.I1850Clm45BgcCrop.derecho_gnu.clm-ciso--clm-cropMonthOutput BASELINE ctsm5.4.029: DIFF
    FAIL SMS_D_Ld5.f10_f10_mg37.I2000Clm50FatesRs.derecho_gnu.clm-FatesCold BASELINE ctsm5.4.029: DIFF
    FAIL SMS_Ld5.f10_f10_mg37.I1850Clm45BgcCrop.derecho_gnu.clm-till--clm-remove_residues BASELINE ctsm5.4.029: DIFF
    FAIL SMS_Ld5_PS.f19_g17.I2000Clm50FatesRs.derecho_gnu.clm-FatesCold BASELINE ctsm5.4.029: DIFF
    FAIL ERI_D_Ld20.f10_f10_mg37.I2000Clm50Fates.derecho_intel.clm-FatesCold BASELINE ctsm5.4.029: DIFF
    FAIL ERI_D_Ld20.f45_f45_mg37.I2000Clm50FatesRs.derecho_intel.clm-FatesColdTwoStream BASELINE ctsm5.4.029: DIFF
    FAIL ERI_D_Ld9.f45_f45_mg37.I2000Clm60Fates.derecho_intel.clm-FatesColdCamLndTuningMode BASELINE ctsm5.4.029: DIFF
    FAIL ERP_D_P64x2_Ld3.f10_f10_mg37.I2000Clm50BgcCru.derecho_intel.clm-noFUN_flexCN BASELINE ctsm5.4.029: DIFF
    FAIL ERP_D_P64x2_Ld3.f10_f10_mg37.I2000Clm50BgcCru.derecho_intel.clm-noFUN_flexCN--clm-matrixcnOn_ignore_warnings BASELINE ctsm5.4.029: DIFF (EXPECTED FAILURE)
    FAIL ERP_Ld9.f45_f45_mg37.I2000Clm50FatesRs.derecho_intel.clm-FatesColdAllVars BASELINE ctsm5.4.029: DIFF
    FAIL ERP_P64x2_D_Ld5.f10_f10_mg37.I1850Clm45BgcCrop.derecho_intel.clm-crop BASELINE ctsm5.4.029: DIFF
    FAIL ERP_P64x2_D_Ld5.f10_f10_mg37.I1850Clm45BgcCru.derecho_intel.clm-ciso BASELINE ctsm5.4.029: DIFF
    FAIL ERP_P64x2_D_Ld5.f10_f10_mg37.I1850Clm45BgcCru.derecho_intel.clm-default BASELINE ctsm5.4.029: DIFF
    FAIL ERP_P64x2_D_Ld5.f10_f10_mg37.IHistClm45BgcCru.derecho_intel.clm-decStart BASELINE ctsm5.4.029: DIFF
    FAIL ERP_P64x2_Ld396.f10_f10_mg37.IHistClm60Bgc.derecho_intel.clm-monthly--clm-matrixcnOn_ignore_warnings BASELINE ctsm5.4.029: DIFF (EXPECTED FAILURE)
    FAIL ERS_D_Ld5.f10_f10_mg37.I2000Clm50Fates.derecho_intel.clm-FatesCold BASELINE ctsm5.4.029: DIFF
    FAIL ERS_D_Ld6.f10_f10_mg37.I1850Clm45BgcCrop.derecho_intel.clm-clm50CMIP6frc BASELINE ctsm5.4.029: DIFF
    FAIL ERS_Ld30.f45_f45_mg37.I2000Clm50FatesRs.derecho_intel.clm-FatesColdFixedBiogeo BASELINE ctsm5.4.029: DIFF
    FAIL ERS_Ld30.f45_f45_mg37.I2000Clm50FatesRs.derecho_intel.clm-FatesColdSizeAgeMort BASELINE ctsm5.4.029: DIFF
    FAIL ERS_Ly5_P128x1.f10_f10_mg37.IHistClm45BgcCrop.derecho_intel.clm-cropMonthOutput BASELINE ctsm5.4.029: DIFF
    FAIL ERS_P128x1_Ld765.f10_f10_mg37.I2000Clm60Fates.derecho_intel.clm-FatesColdNoComp BASELINE ctsm5.4.029: DIFF
    FAIL REP_P64x2_Ld396.f10_f10_mg37.IHistClm60Bgc.derecho_intel.clm-monthly--clm-matrixcnOn_ignore_warnings BASELINE ctsm5.4.029: DIFF (EXPECTED FAILURE)
    FAIL SMS_D_Ld5.f10_f10_mg37.I2000Clm50FatesRs.derecho_intel.clm-FatesCold BASELINE ctsm5.4.029: DIFF
    FAIL SMS_D_Ld65.f10_f10_mg37.I2000Clm45BgcCropQianRs.derecho_intel.clm-FireLi2014Qian BASELINE ctsm5.4.029: DIFF
    FAIL SMS_D_Lm6_P256x1.f45_f45_mg37.I2000Clm50FatesRs.derecho_intel.clm-FatesCold BASELINE ctsm5.4.029: DIFF
    FAIL SMS_Ld5.f10_f10_mg37.I1850Clm45BgcCrop.derecho_intel.clm-crop BASELINE ctsm5.4.029: DIFF
    FAIL SMS_Ld5.f10_f10_mg37.I2000Clm50FatesRs.derecho_intel.clm-FatesCold BASELINE ctsm5.4.029: DIFF
    FAIL SMS_Ln9.f09_f09_mg17.I1850Clm45Bgc.derecho_intel.clm-clm45cam4LndTuningModeZDustSoilErod BASELINE ctsm5.4.029: DIFF

Simplify messaging during docs build slevis resolved conflicts: bld/namelist_files/namelist_defaults_ctsm.xml

slevis-lmwg · 2026-04-13T19:13:20Z

Testing on derecho after the latest updates:

./run_sys_tests -s fates -c fates-sci.1.92.0_api.44.0.0-ctsm5.4.031 --skip-generate
build-namelist_test.pl

Before I try ./run_sys_tests -s aux_clm -c ctsm5.4.032 --skip-generate, I will look into the diffs from baseline with this test from the above list of failures:
SMS_Ld5.f10_f10_mg37.I1850Clm45BgcCrop.derecho_intel.clm-crop
Largest diffs (grepped for "E-0") out of a total of 53 fields with non-zero diffs suggest roundoff diffs:

 RMS CH4_SURF_AERE_SAT                2.0582E-10            NORMALIZED  3.9956E-03
 RMS CH4_SURF_DIFF_SAT                8.6639E-14            NORMALIZED  1.6418E-04
 RMS FCH4                             4.7957E-15            NORMALIZED  1.3812E-04
 RMS FCH4TOCO2                        4.7907E-12            NORMALIZED  8.6788E-05
 RMS FCH4_DFSAT                       8.9717E-20            NORMALIZED  2.3733E-07
 RMS NEM                              4.7907E-12            NORMALIZED  1.2779E-04
 RMS SOM_C_LEACHED                    1.3173E-25            NORMALIZED  1.5688E-09
 RMS TOTCOLCH4                        6.1704E-10            NORMALIZED  1.9915E-09
 RMS CONC_O2_SAT                      4.7118E-03            NORMALIZED  4.4369E-02

The test gives similar/same diffs when I reverse the mods in SoilBiogeochemCompetitionMod.F90
The test returns b4b when I reverse the mods in CNNDynamicsMod.F90
Starting aux_clm to confirm all DIFFs go away, though Fates tests appear to fail now

slevis-lmwg · 2026-04-14T18:19:45Z

Now repeat ./run_sys_tests -s aux_clm -c ctsm5.4.032 --skip-generate with the latest commit:

izumi
derecho
Three tests ran out of walltime that didn't fail before, so I will not spend additional time on them for now:

ERS_Ly5_Mmpi-serial.1x1_smallvilleIA.I1850Clm50BgcCrop.derecho_gnu.clm-ciso_monthly RUN
ERS_Ly5_Mmpi-serial.1x1_smallvilleIA.I1850Clm50BgcCrop.derecho_gnu.clm-ciso_monthly--clm-matrixcnOn RUN
ERS_Ly5_P128x1.f10_f10_mg37.IHistClm60BgcCrop.derecho_intel.clm-cropMonthOutput--clm-matrixcnOn_ignore_warnings RUN

Known issue #3840

slevis-lmwg · 2026-04-14T22:16:10Z

@rgknox testing seems satisfactory to me, so this PR and its fates counterpart are ready for your final review, unless you think of anything else that we need to work on here.

slevis-lmwg added 2 commits July 30, 2025 15:30

Uncomment if ( .not. use_fates_sp ) section of clmfates_interfaceMod

01671b9

...calculating these variables: nf_soil%decomp_npools_sourcesink_col nf_soil%fates_litter_flux

slevis-lmwg self-assigned this Aug 11, 2025

slevis-lmwg linked an issue Aug 11, 2025 that may be closed by this pull request

Completing the FATES-CLM nitrogen coupling #3378

Open

1 task

slevis-lmwg added 4 commits August 12, 2025 16:45

Replace plant_ndemand(c) * nuptake_prof(c,j) with plant_ndemand_vr(c,j)

59f9d09

New use_fates section for plant_ndemand_vr and plant_ndemand from fates

b155e58

New use_fates section to set the FATES N uptake fluxes

c79230c

Change clm_fate from "in" to "inout" argument

98b4b7d

slevis-lmwg commented Aug 14, 2025

View reviewed changes

Comment thread src/soilbiogeochem/SoilBiogeochemCompetitionMod.F90 Outdated

slevis-lmwg commented Aug 14, 2025

View reviewed changes

Comment thread src/soilbiogeochem/SoilBiogeochemCompetitionMod.F90

slevis-lmwg added 4 commits August 14, 2025 17:27

Replace if (use_fates) with (is_fates(c)) to add flexibility

a46a76c

Remove two unhelpful 1x1 FatesColdPRT2 tests that I added earlier

f2202fb

New is_fates section for plant_ndemand, now when use_nitrif_denitrif

e96b87e

Add (really, uncomment) FATES npp to enable fixation

b24738b

slevis-lmwg added 2 commits September 19, 2025 17:24

Uncomment hrv_deadstem_to_prod* lines in clmfates_interfaceMod

00a332e

...for fates_parteh_mode == 2

Add error check about fates_parteh_mode = 2 and suplnitro = suplnAll

2bbdd64

slevis-lmwg added 2 commits September 22, 2025 16:52

Upd. namelist_defaults for suplnitro when parteh_mode == 1 or /= 1

d8bc6ce

prt_carbon_allom_hyp -> fates_c_only & prt_cnp_flex_allom_hyp ->fates_cn

116b310

These variables originate in fates, so this renaming requires the same renaming in fates; I will open the corresponding PR very soon

slevis-lmwg mentioned this pull request Sep 22, 2025

Complete the FATES-CLM nitrogen coupling NGEET/fates#1472

Open

5 tasks

Correction to syntax error caught by gnu and nvhpc, not intel

ba955b6

rgknox and others added 3 commits March 31, 2026 15:36

Added uptake fluxes to restarts for fates, pass in boundary condition…

924347c

… structure

Merge pull request #20 from rgknox/fates-cn

1f3bba8

restarting uptake fluxes

Merge branch 'master' into fates-cn

9d17906

slevis-lmwg added 5 commits April 13, 2026 11:34

Simplify elsif in CLMBuildNamelist.pm to get past failure

911f307

Correct minor typo

d7d8a22

Add 2 expected failure tests to build-namelist_test.pl

f798627

Merge tag 'ctsm5.4.032' into fates-cn

488b93c

Simplify messaging during docs build slevis resolved conflicts: bld/namelist_files/namelist_defaults_ctsm.xml

Update to existing compsets in new PRT2 tests for cases to create

83bf1f1

slevis-lmwg commented Apr 13, 2026

View reviewed changes

Comment thread src/biogeochem/CNNDynamicsMod.F90

slevis-lmwg commented Apr 13, 2026

View reviewed changes

Comment thread src/soilbiogeochem/SoilBiogeochemCompetitionMod.F90

slevis-lmwg commented Apr 13, 2026

View reviewed changes

Comment thread src/soilbiogeochem/SoilBiogeochemCompetitionMod.F90

slevis-lmwg added this to LMWG: Sprint Planning Board Apr 14, 2026

github-project-automation bot moved this to Todo in LMWG: Sprint Planning Board Apr 14, 2026

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slevis-lmwg mentioned this pull request Apr 15, 2026

Tests that needed longer wallclock #3840

Open

wwieder modified the milestone: FATES freeze for ctsm6 Apr 16, 2026

wwieder requested review from glemieux April 16, 2026 16:59

slevis-lmwg removed the request for review from rgknox April 16, 2026 20:35

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