known issue

Due to the cheyenne maintenance this week you need to update some modules:intel/17.0.1pnetcdf/1.11.0netcdf/4.6.1netcdf-mpi/4.6.1mpt/2.19 There is also an issue with the -p option to mpiexec_mpt, you may either reverse the order of -p and -np in env_mach_specific.xml or remove the -p option.  If...

Affected release and development versions: CESM2.y.z There is a known issue with Github's SVN-bridge software and SVN v1.11 as mentioned here https://subversion.apache.org/docs/release-notes/1.11#issues.Until that issue is resolved, you must use SVN 1.10.x or older. 

In CESM2.0.z: In transient cases without prognostic crops, %crop stays fixed at 1850 values, rather than changing each year. This affects CLM45 and CLM50 transient compsets without 'Crop' in their name; specifically the following (compsets in bold are ones that were listed as scientifically...

Affected Release CESM2.0.0 There is a problem with the ocean domain files when running a SCAM compset using the CESM2.0.0 release. Complete details about the problem and the tested fix are available at this github link: https://github.com/ESMCI/cime/pull/2736

Affected release: CESM2.0.0Affected machine: cheyenne.ucar.eduThere is a known problem with launching MPI jobs on cheyenne such that the user may be required to resubmit the model using the case.submit script repeatedly before the model run is launched successfully. The problem will produce...

If you have a clone of CESM that points to a release tag, then update it to a different release tag and rerun manage_externals/checkout_externals, you may get an error like the following: Checking out externals: clm, mosart, ww3, cime, cice, pop, ERROR:root:Command '[u'svn', u'switch'...

The following reference was interpreted wrongly in terms of the maximum rate of soil respiration. This issue goes back to the introduction of CLM4.5 ! calculate the rate constant scalar for soil water content. ! Uses the log relationship with water potential given in <br />! Andren, O...

Affected Releases *DEVELOPMENT CODE ONLY* cesm1_4 series beta tags 05, 06 and 07 CSEG would like developers to be aware of the following known issues in thecesm1_4 beta development tags 05 06 and 07. 1. Performance is degraded on yellowstone -     this is an issue with the way threading is...

This error indicates that the model size requirement is too large to fit the default memory model, solutions vary depending on the case: If you are using netcdf 4.6.0 and newer and pio 1_8_12 or older there is an incompatibility that presents this error.  You may update to pio1_8_14.  If you are...

Affected releases:cesm1_3_beta11 (and earlier): no problemcesm1_3_beta12: segfault, CASEROOT is not createdcesm1_3_beta{13,14,15,16,17}: segfault, CASEROOT is created, README.case and README.science_support files appear in CASEROOTcesm1_3_beta18: no problemcesm1_4_beta01: no problemOn...

Affected Releases - CESM1.2.zFixed in CESM2.y.z----------------------There is a small typo in the"config_grid.xml" file in $CCSMROOT/scripts/ccsm_utils/Case.template/".It should be "fv0.9x1.25" instead of "fv0.9x.125" in Line 1066. 

Due to changes in the system modules builds on Stampede are currently broken.   We have a support ticket open and will update this post when the problem is resolved.  

The intel 14 compiler causes a memory leak in the pop model in file diags_on_lat_aux_grid.F90The following change resolves the problem: --- diags_on_lat_aux_grid.F90(revision 64866)+++ diags_on_lat_aux_grid.F90(working copy)@@ -711,8 +711,11 @@         REGION_MASK_LAT_AUX(:,:,2) =...

The timing utility code in cesm1_2_2 and earlier (not sure how far back this goes) has a bug in perf_mod.F90 which results in no output being produced when the global statistics are turned off (via setting the namelist variable profile_global_stats=.false.). The fix is to change the value of...

Affected Releases CESM1.1.z and CESM1.2.z(Bugzilla 1861) There are some variables in the pop2 namelist that are set by build-namelist based on environment variables. For example, init_ts_option is usually 'ccsm_startup', 'ccsm_branch', 'ccsm_hybrid', or 'ccsm_continue' depending on the values of...

Affected Releases - CESM1.1.z and CESM1.2.z(Bugzilla 1877) Details included in the Bugzilla report.The check_input_data script does not grab POP's .hdr files (associated with binary data files) from the inputdata repository, so data is not read correctly on new machines until these files are...

Affected Releases - CESM1.2.z(Bugzilla 1717) For CLM4.5, I found one error that is not just a typo but also shows up in a rarely exercised portion of the code (most likely a sudden very intense snowstorm-- ~8 cm/hr -- preceded by warmer weather) in SLakeHydrology, where the top lake layer...

Affected Releases - CESM1.2.z(Bugzilla 1719) Details and a fix are included in the bugzilla report.

Affected Releases - CESM1.2.z(Bugzilla 1753) The file clmi.ICRUCLM45BGCCROPmp24.0241-01-01.1.9x2.5_g1v6_simyr2000_c130515.nc was interpolated using interpinic for CROP simulations. But, because of Bug 1725, interpinic gave a file that has CROP NOT spunup, but starting up from bare soil. So we...

Affected Releases - CESM1.2.z(Bugzilla 1634) It will map to other high resolutions like: ne120np4, 0.23x0.31, 0.47x0.61 however. The problem is that it does the mapping, but puts garbage data values (like e317) in some fields that the program does NOT touch. They happen to be very important...