Updating ChangeLog

Author: mwaxmonsky

doc/ChangeLog

@@ -1,5 +1,110 @@
 ===============================================================
 
+Tag name: cam6_4_044
+Originator(s): mwaxmonsky 
+Date: 10/25/2024
+One-line Summary: Start refactoring of vertical diffusion to be CCPPized
+Github PR URL: https://github.com/ESCOMP/CAM/pull/1176
+
+Purpose of changes (include the issue number and title text for each relevant GitHub issue):
+Start refactoring of vertical diffusion to be CCPPized and outsources solve phase of non-graft decomp solves to atmospheric physics solver.
+
+Describe any changes made to build system:
+- Adds the to_be_ccppized directory in atmospheric_physics to source search path
+
+Describe any changes made to the namelist: N/A
+
+List any changes to the defaults for the boundary datasets: N/A
+
+Describe any substantial timing or memory changes: N/A
+
+Code reviewed by:
+
+List all files eliminated:
+D       src/utils/coords_1d.F90
+D       src/utils/linear_1d_operators.F90
+- Files were moved to atmospheric_physics
+
+List all files added and what they do: N/A
+
+List all existing files that have been modified, and describe the changes:
+M       .gitmodules
+M       bld/configure
+M       src/atmos_phys
+- Update atmospheric_physics reference and added new atmospheric_physics directory to search path
+
+M       cime_config/config_pes.xml
+- Decreasing NTHRDS from 2 to 1 to force single threaded execution as multithreaded execution enables the -smp flag which breaks under OpenMP when running the SE dycore, similar to #1087
+
+M       src/physics/cam/diffusion_solver.F90
+- Uses new CCPPized interface for decomp that was moved to atmospheric_physics repo to single solve step.
+
+If there were any failures reported from running test_driver.sh on any test
+platform, and checkin with these failures has been OK'd by the gatekeeper,
+then copy the lines from the td.*.status files for the failed tests to the
+appropriate machine below.  All failed tests must be justified.
+
+derecho/intel/aux_cam:
+
+ERP_D_Ln9.ne30pg3_ne30pg3_mg17.FLTHIST.derecho_intel.cam-outfrq9s (Overall: DIFF)
+ERP_Ld3.ne30pg3_ne30pg3_mg17.FHISTC_MTt4s.derecho_intel.cam-outfrq1d_aoa (Overall: DIFF)
+SMS_D_Ln9.ne30pg3_ne30pg3_mg17.FMTHIST.derecho_intel.cam-outfrq9s (Overall: DIFF)
+SMS_D_Ln9_P1280x1.ne30pg3_ne30pg3_mg17.FHISTC_MTt1s.derecho_intel.cam-outfrq9s_Leung_dust (Overall: DIFF)
+- expected diffs due to changes in cam7 configuration/tuning
+
+ERP_Ln9.f09_f09_mg17.FCSD_HCO.derecho_intel.cam-outfrq9s (Overall: FAIL) details:
+- pre-existing failure due to HEMCO not having reproducible results issues #1018 and #856
+
+SMS_D_Ln9.f19_f19_mg17.FXHIST.derecho_intel.cam-outfrq9s_amie (Overall: FAIL)
+SMS_D_Ln9_P1280x1.ne0CONUSne30x8_ne0CONUSne30x8_mt12.FCHIST.derecho_intel.cam-outfrq9s (Overall: FAIL)
+- pre-existing failures due to build-namelist error requiring CLM/CTSM external update.
+
+derecho/nvhpc/aux_cam:
+
+ERS_Ln9_G4-a100-openacc.ne30pg3_ne30pg3_mg17.F2000dev.derecho_nvhpc.cam-outfrq9s_mg3_default (Overall: DIFF)
+- expected diff due to changing seasalt_emis_scale for cam7
+
+izumi/nag/aux_cam:
+
+DAE.f45_f45_mg37.FHS94.izumi_nag.cam-dae (Overall: FAIL) details:
+ - pre-existing failure -- issue #670
+
+izumi/gnu/aux_cam:
+
+ERP_D_Ln9.ne3pg3_ne3pg3_mg37.FLTHIST.izumi_gnu.cam-outfrq9s (Overall: DIFF) details:
+ERP_Ln9_P24x2.f45_f45_mg37.QPWmaC6.izumi_gnu.cam-outfrq9s_mee_fluxes (Overall: DIFF) details:
+ERS_Ln9_P24x1.mpasa480_mpasa480.F2000climo.izumi_gnu.cam-outfrq9s_mpasa480 (Overall: DIFF) details:
+- new tests are missing baselines
+
+CAM tag used for the baseline comparison tests if different than previous
+tag:
+
+Summarize any changes to answers, i.e.,
+- what code configurations:
+- what platforms/compilers:
+- nature of change (roundoff; larger than roundoff but same climate; new
+  climate):
+N/A
+
+If bitwise differences were observed, how did you show they were no worse
+than roundoff?
+N/A
+
+If this tag changes climate describe the run(s) done to evaluate the new
+climate in enough detail that it(they) could be reproduced, i.e.,
+- source tag (all code used must be in the repository):
+- platform/compilers:
+- configure commandline:
+- build-namelist command (or complete namelist):
+- MSS location of output:
+N/A
+
+MSS location of control simulations used to validate new climate: N/A
+
+URL for AMWG diagnostics output used to validate new climate: N/A
+
+===============================================================
+
 Tag name: cam6_4_043
 Originator(s): eaton
 Date: 25 Oct 2024