Update change log with final test information

Author: kuanchihwang

doc/ChangeLog

@@ -1,8 +1,8 @@
 ===============================================================
 
-Tag name: TBD
+Tag name: cam6_4_091
 Originator(s): kuanchihwang
-Date: TBD
+Date: May 8, 2025
 One-line Summary: Implement support for moving mountain gravity wave scheme in MPAS dycore
 Github PR URL: https://github.com/ESCOMP/CAM/pull/1297
 
@@ -77,7 +77,7 @@ appropriate machine below. All failed tests must be justified.
 
   Since cam6_4_089, `model_version`, which is a variable that stores the current model version,
   has been introduced to `nuopc.runconfig`. However, the testing framework will detect it as a
-  significant difference and fail with "NLCOMP" incorrectly.
+  significant difference and fail at "NLCOMP" incorrectly.
 
   All tests currently exhibit "NLFAIL" in their overall results due to those "NLCOMP" failures.
 
@@ -92,6 +92,63 @@ derecho/intel/aux_cam:
     FAIL SMS_D_Ln9_P1280x1.ne0CONUSne30x8_ne0CONUSne30x8_mt12.FCHIST.derecho_intel.cam-outfrq9s SETUP
       * Pre-existing failures due to build-namelist error requiring CLM/CTSM external update
 
+  NOTE:
+
+  SMS_D_Ln9_P1280x1.ne0ARCTICne30x4_ne0ARCTICne30x4_mt12.FHIST.derecho_intel.cam-outfrq9s (Overall: NLFAIL) details:
+    PASS SMS_D_Ln9_P1280x1.ne0ARCTICne30x4_ne0ARCTICne30x4_mt12.FHIST.derecho_intel.cam-outfrq9s RUN
+      * This test is unstable. Sometimes (like 2 out of 3) it fails at "RUN", but with enough retries it eventually passes.
+        When it does fail, a stack trace similar to the following can be reliably observed:
+
+        forrtl: error (65): floating invalid
+        Image              PC                Routine            Line        Source
+        libpthread-2.31.s  000015356741A8C0  Unknown               Unknown  Unknown
+        libesmf.so         000015356DD8E72A  _ZN5ESMCI3XXE10ps     Unknown  Unknown
+        libesmf.so         000015356DD82D90  _ZN5ESMCI3XXE10ps     Unknown  Unknown
+        libesmf.so         000015356DD777B0  _ZN5ESMCI3XXE10ps     Unknown  Unknown
+        libesmf.so         000015356DD6DBB4  _ZN5ESMCI3XXE4exe     Unknown  Unknown
+        libesmf.so         000015356DD6D36D  _ZN5ESMCI3XXE4exe     Unknown  Unknown
+        libesmf.so         000015356DCC66CD  _ZN5ESMCI26sparse     Unknown  Unknown
+        libesmf.so         000015356DCBACAF  _ZN5ESMCI5Array18     Unknown  Unknown
+        libesmf.so         000015356DCB970E  _ZN5ESMCI5Array17     Unknown  Unknown
+        libesmf.so         000015356DD1E340  c_esmc_arraysmmst     Unknown  Unknown
+        libesmf.so         000015356E0A419F  _Z19ESMCI_regrid_     Unknown  Unknown
+        libesmf.so         000015356E030568  _ZN5ESMCI7MeshCap     Unknown  Unknown
+        libesmf.so         000015356E0E0E42  c_esmc_regrid_cre     Unknown  Unknown
+        libesmf.so         000015356E7787B1  esmf_regridmod_mp     Unknown  Unknown
+        libesmf.so         000015356E4E198C  esmf_fieldregridm     Unknown  Unknown
+        cesm.exe           00000000080D8794  lnd_set_decomp_an         497  lnd_set_decomp_and_domain.F90
+        cesm.exe           00000000080D0F4E  lnd_set_decomp_an         128  lnd_set_decomp_and_domain.F90
+        cesm.exe           00000000080A2F3F  lnd_comp_nuopc_mp         644  lnd_comp_nuopc.F90
+        libesmf.so         000015356DE68020  _ZN5ESMCI6FTable1     Unknown  Unknown
+        libesmf.so         000015356DE67A6C  ESMCI_FTableCallE     Unknown  Unknown
+        libesmf.so         000015356E153DE4  _ZN5ESMCI2VM5ente     Unknown  Unknown
+        libesmf.so         000015356DE68704  c_esmc_ftablecall     Unknown  Unknown
+        libesmf.so         000015356E359B9D  esmf_compmod_mp_e     Unknown  Unknown
+        libesmf.so         000015356E5DD298  esmf_gridcompmod_     Unknown  Unknown
+        libesmf.so         000015356E999B87  nuopc_driver_mp_l     Unknown  Unknown
+        libesmf.so         000015356E98F82B  nuopc_driver_mp_i     Unknown  Unknown
+        libesmf.so         000015356DE68020  _ZN5ESMCI6FTable1     Unknown  Unknown
+        libesmf.so         000015356DE67A6C  ESMCI_FTableCallE     Unknown  Unknown
+        libesmf.so         000015356E153DE4  _ZN5ESMCI2VM5ente     Unknown  Unknown
+        libesmf.so         000015356DE68704  c_esmc_ftablecall     Unknown  Unknown
+        libesmf.so         000015356E359B9D  esmf_compmod_mp_e     Unknown  Unknown
+        libesmf.so         000015356E5DD298  esmf_gridcompmod_     Unknown  Unknown
+        libesmf.so         000015356E999B87  nuopc_driver_mp_l     Unknown  Unknown
+        libesmf.so         000015356E98F92C  nuopc_driver_mp_i     Unknown  Unknown
+        libesmf.so         000015356E97F883  nuopc_driver_mp_i     Unknown  Unknown
+        libesmf.so         000015356DE68020  _ZN5ESMCI6FTable1     Unknown  Unknown
+        libesmf.so         000015356DE67A6C  ESMCI_FTableCallE     Unknown  Unknown
+        libesmf.so         000015356E153DE4  _ZN5ESMCI2VM5ente     Unknown  Unknown
+        libesmf.so         000015356DE68704  c_esmc_ftablecall     Unknown  Unknown
+        libesmf.so         000015356E359B9D  esmf_compmod_mp_e     Unknown  Unknown
+        libesmf.so         000015356E5DD298  esmf_gridcompmod_     Unknown  Unknown
+        cesm.exe           00000000004502F8  MAIN__                    128  esmApp.F90
+        cesm.exe           000000000042711D  Unknown               Unknown  Unknown
+        libc-2.31.so       0000153562F2429D  __libc_start_main     Unknown  Unknown
+        cesm.exe           000000000042704A  Unknown               Unknown  Unknown
+
+        Line 497 of lnd_set_decomp_and_domain.F90 is a call to ESMF_FieldRegridStore, which is outside of our (CAM) control.
+
 derecho/nvhpc/aux_cam:
 
   All pass