update ChangeLog

doc/ChangeLog

@@ -1,10 +1,10 @@
 ===============================================================
 
-Tag name:
+Tag name: cam6_3_151
 Originator(s): eaton
-Date:
+Date: Thu 21 Mar 2024
 One-line Summary: Bugfix to allow multiple monthly avg history files
-Github PR URL:
+Github PR URL: https://github.com/ESCOMP/CAM/pull/1003
 
 Purpose of changes (include the issue number and title text for each relevant GitHub issue):
 
@@ -20,7 +20,7 @@ List any changes to the defaults for the boundary datasets: none
 
 Describe any substantial timing or memory changes: none
 
-Code reviewed by:
+Code reviewed by: cacraigucar, peverwhee
 
 List all files eliminated: none
 
@@ -38,11 +38,28 @@ 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.
 
+All tests have a MEMCOMP failure which we are ignoring.
+Several tests have a TPUTCOMP failure which we are also ignoring.
+
 derecho/intel/aux_cam:
+  ERP_Ln9.C96_C96_mg17.F2000climo.derecho_intel.cam-outfrq9s_mg3 (Overall: FAIL) details:
+  ERP_Ln9.f09_f09_mg17.FCSD_HCO.derecho_intel.cam-outfrq9s (Overall: FAIL) details:
+  SMS_Ld1.f09_f09_mg17.FCHIST_GC.derecho_intel.cam-outfrq1d (Overall: FAIL) details:
+  SMS_Lh12.f09_f09_mg17.FCSD_HCO.derecho_intel.cam-outfrq3h (Overall: DIFF) details:
+  - pre-existing failures
 
 izumi/nag/aux_cam:
+  DAE.f45_f45_mg37.FHS94.izumi_nag.cam-dae (Overall: FAIL) details:
+  - pre-existing failure
 
 izumi/gnu/aux_cam:
+  All PASS.
+
+TESTING NOTE: None of our regression tests use multiple monthly output
+files.  The fix was tested in a low res FHS94 compset that specified
+monthly output for h0, h1, h2, and h3.  The 'T' field was output in each
+file.  A 1 month test was run and all files had identical output.  This is
+the same configuration that I used to debug the problem.
 
 CAM tag used for the baseline comparison tests if different than previous
 tag: