patch-too-small error during global transient historical run #1452
Description
Describe the issue
I also ran into another error during historical global transient run. This one appears in a gridcell that is almost entirely either bare ground or rangeland. Possibly it is trying to convert to entirely rangeland. Disabling the endrun as suggested in the error log worked in this case and allowed the run to complete.
Relevant log output
949: Warning. small nocomp patch wasnt able to find another patch to fuse with.
949: 14 1 9.463164189702107E-005
949: Warning. small nocomp patch wasnt able to find another patch to fuse with.
949: 14 1 9.463164189702107E-005
949: Warning. small nocomp patch wasnt able to find another patch to fuse with.
949: 14 1 9.463164189702107E-005
949: Warning. small nocomp patch wasnt able to find another patch to fuse with.
949: 14 1 9.463164189702107E-005
949: Warning. small nocomp patch wasnt able to find another patch to fuse with.
949: 14 1 9.463164189702107E-005
949: Warning. small nocomp patch wasnt able to find another patch to fuse with.
949: 14 1 9.463164189702107E-005
949: FATES is having difficulties fusing very small patches.
949: It is possible that a either a secondary or primary
949: patch has become the only patch of its kind, and it is
949: is very very small. You can test your luck by
949: disabling the endrun statement following this message.
949: FATES may or may not continue to operate within error
949: tolerances, but will generate another fail if it does not.
949: otherwise, dumping some diagnostics.
949: 9.463164189702107E-005 14 1
949: ----------------------------------------
949: Site Coordinates
949: ----------------------------------------
949: latitude = -19.8947368421053
949: longitude = 140.000000000000
949: ----------------------------------------
949: currentSite%area_bareground 0.150956047736229
949: currentSite%area_pft(:,:) 3.066543719903422E-002 0.000000000000000E+000
949: 0.000000000000000E+000 0.000000000000000E+000 0.000000000000000E+000
949: 0.000000000000000E+000 0.000000000000000E+000 0.000000000000000E+000
949: 0.371106235216921 0.000000000000000E+000 0.000000000000000E+000
949: 0.000000000000000E+000 0.000000000000000E+000 0.598228327584045
949: 3.066543719903422E-002 0.000000000000000E+000 0.000000000000000E+000
949: 0.000000000000000E+000 0.000000000000000E+000 0.000000000000000E+000
949: 0.000000000000000E+000 0.000000000000000E+000 0.371106235216921
949: 0.000000000000000E+000 0.000000000000000E+000 0.000000000000000E+000
949: 0.000000000000000E+000 0.598228327584045 0.000000000000000E+000
949: 0.000000000000000E+000 0.000000000000000E+000 0.000000000000000E+000
949: 0.000000000000000E+000 0.000000000000000E+000 0.000000000000000E+000
949: 0.000000000000000E+000 0.000000000000000E+000 0.000000000000000E+000
949: 0.000000000000000E+000 0.000000000000000E+000 0.000000000000000E+000
949: 1.00000000000000 0.000000000000000E+000 0.000000000000000E+000
949: 0.000000000000000E+000 0.000000000000000E+000 0.000000000000000E+000
949: 0.000000000000000E+000 0.000000000000000E+000 0.000000000000000E+000
949: 0.382846387056066 0.000000000000000E+000 0.000000000000000E+000
949: 0.000000000000000E+000 0.000000000000000E+000 0.617153612943934
949: 0.000000000000000E+000 0.000000000000000E+000 0.000000000000000E+000
949: 0.000000000000000E+000 0.000000000000000E+000 0.000000000000000E+000
949: 0.000000000000000E+000 0.000000000000000E+000 0.000000000000000E+000
949: 0.000000000000000E+000 0.000000000000000E+000 0.000000000000000E+000
949: 1.00000000000000 0.000000000000000E+000
949: 1.66531788899030 13 5
949: 8488.60777410693 14 3
949: 9.463164189702107E-005 14 1
949: 0.153640325454551 9 1
949: 1.269568469716925E-002 1 1
949: 1509.56047736229 0 0
949: current landuse state vector: 1.664306417936176E-005 0.000000000000000E+000
949: 0.848860777410693 0.000000000000000E+000 1.665317888990300E-004
949: current landuse state vector (not including bare gruond):
949: 1.960212322929460E-005 0.000000000000000E+000 0.999784257513890
949: 0.000000000000000E+000 1.961403628811124E-004
949: driver data landuse state vector: 1.323249185591491E-004
949: 2.978767207873597E-005 0.999657956950475 2.028149628835395E-015
949: 1.799304588850681E-004
949: min_allowed_landuse_fraction: 1.177795327713885E-006
949: landuse_vector_gt_min: T F T F T
949: trans matrix from: 1 0.000000000000000E+000 0.000000000000000E+000
949: 1.574195894913856E-013 0.000000000000000E+000 2.058831000805111E-012
949: trans matrix from: 2 0.000000000000000E+000 0.000000000000000E+000
949: 7.533481747792357E-008 0.000000000000000E+000 1.672087788301078E-009
949: trans matrix from: 3 0.000000000000000E+000 3.862805945954699E-012
949: 0.000000000000000E+000 0.000000000000000E+000 6.026978058250894E-008
949: trans matrix from: 4 0.000000000000000E+000 0.000000000000000E+000
949: 5.556574225441878E-018 0.000000000000000E+000 0.000000000000000E+000
949: trans matrix from: 5 0.000000000000000E+000 1.414170290789865E-012
949: 5.353201272077195E-009 0.000000000000000E+000 0.000000000000000E+000
949: this isnt because the land use was less than allowed
949: ENDRUN:
949: ERROR: ERROR in EDPatchDynamicsMod.F90 at line 3527
949: Image PC Routine Line Source
949: e3sm.exe 000000000149C00D shr_abort_mod_mp_ 114 shr_abort_mod.F90
949: e3sm.exe 0000000000E81C6F fatesglobals_mp_f 103 FatesGlobals.F90
949: e3sm.exe 0000000000F93669 edpatchdynamicsmo 3527 EDPatchDynamicsMod.F90
949: e3sm.exe 0000000000E6AF7A edmainmod_mp_ed_e 325 EDMainMod.F90
949: e3sm.exe 00000000005EA422 elmfatesinterface 1352 elmfates_interfaceMod.F90
949: e3sm.exe 00000000005748F5 elm_driver_mp_elm 1299 elm_driver.F90
949: e3sm.exe 0000000000558560 lnd_comp_mct_mp_l 619 lnd_comp_mct.F90
949: e3sm.exe 000000000045C72E component_mod_mp_ 757 component_mod.F90
949: e3sm.exe 0000000000435D34 cime_comp_mod_mp_ 2973 cime_comp_mod.F90
949: e3sm.exe 000000000045C3C2 MAIN__ 153 cime_driver.F90
949: e3sm.exe 000000000043347D Unknown Unknown Unknown
949: libc-2.31.so 00001458BA5CA1FD __libc_start_main Unknown Unknown
949: e3sm.exe 00000000004333AA Unknown Unknown Unknown
949: MPICH ERROR [Rank 949] [job id 41501596.0] [Fri Aug 8 19:57:11 2025] [nid006258] - Abort(1001) (rank 949 in comm 0): application called MPI_Abort(MPI_COMM_WORLD, 1001) - process 949
949:
949: aborting job:
949: application called MPI_Abort(MPI_COMM_WORLD, 1001) - process 949
srun: error: nid006258: task 949: Exited with exit code 255FATES tag
Host land model tag
39e91e09b5
Machine
perlmutter
Other supported machine name
No response
Additional context
No response