srogstad@geo_umass_edu
Member
I am having a few issues doing a branch run for an RCP 8.5 scenario using cesm 1_2_2. My first test was using this setup:./create_newcase -case ~/cases/branchsept8 -res f09_g16 -compset BRCP85CN -mach yellowstone This by default sets up the following items:RUN_REFCASE: b40.20th.track1.1deg.008RUN_REFDATE: 2005-01-01RUN_STARTDATE: 2005-01-01RUN_TYPE: hybrid I tried to change it from hybrid to branch using xmlchange:./xmlchange STOP_OPTION=nyears./xmlchange STOP_N=1 ./xmlchange REST_OPTION=nmonths./xmlchange REST_N=1./xmlchange RUN_TYPE=branch./cesm_setup./branchsept8.build During the build I get an error about the clm restart file, but the file does get prestaged in the run directory so I am ignoring that:File status unknown: b40.20th.track1.1deg.008.clm2.r.2005-01-01-00000.nc After the build says it completes successfully I submit it but the run exits after less then a minute. There seems to be some sort of mpi error and it is getting stuck somehow. In the logs there are also a bunch of references to hybrid start so I'm assuming it didn't correctly switch to branch, but I'm not sure. I also tried running it on lower resolution just to see if it would work: ./create_newcase -case ~/cases/branchlowerres -res f19_g16 -compset BRCP85CN -mach yellowstone This one defaults to being a startup run and I again try changing it to branch and set the same stop and restart write options as before:./xmlchange RUN_TYPE=branch ./cesm_setup In this case it would not do a successful build citing this error:rtm.buildnml.csh could not find restart file for branch or hybrid start I found many references to the same error in the forums, but in old threads. When I tried to apply to fix I found that I didn't have the same lines of code in my version of rtm.buildnml.csh, probably because those threads are from 2013. I also tried running a case like the first one but changing the restart files to these b40.rcp8_5.1deg.003, which I prestaged in the run directory: ./create_newcase -case ~/cases/branchsept14 -res f09_g16 -compset BRCP85CN -mach yellowstone I made the following xml changes in addition to the same stop and restart changes as before: ./xmlchange RUN_TYPE=branch ./xmlchange RUN_STARTDATE=2007-01-01 ./xmlchange RUN_REFCASE=b40.20th.track1.1deg.003 ./xmlchange RUN_STARTDATE=2007-01-01 ./xmlchange GET_REFCASE=FALSE This run also exits with the same errors as the first test case. Is there something I am missing? How can I create a branch run with this compset and resolution (f09_g16 BRCP85CN)? Any help is appreciated.