Dear Sudipta Ghosh,I ran into the same problem with high resolution (ds < 20 km). The problem was solved using the non-hydrostatic core, i.e. setting the parameteridynamic = 2I hope this helps.Regards,e.On Wed, Aug 9, 2017 at 2:06 AM, SUDIPTA GHOSH <sudiptaghosh006@gmail.com> wrote:______________________________Next I tried to run a 2 year simulation with RegCM4.4 at the same combination of dx and dt but again the problem occurred. I even tried changing the vertical levels from 18 to 23 but no run was completed.Hello All,I tried to run a 5year simulation with RegCM4.5 with dx=25km and dt=30 secs but the model stopped due to CFL violation after 6month simulation. I decreased the dt to 25, 20 and 15 still the job got killed due the same reason, however the simulation period varied each time.Next I changed the resolution to 50km and tried with following combinations:ds=50km dt=150secsds=50km dt=120secsds=50km dt =100secsBut the same error as above is persisting.I will be highly obliged if anyone can kindly advice for the same.I have tried to run the job on 360, 300, 240 and 200 processors as well. However the message in each log file is as follows:
WHUUUUBBBASAAAGASDDWD!!!!!!!!!!!!!!!!
No more atmosphere here....
CFL violation detected, so model STOP
#####################################
# DECREASE DT !!!! #
#####################################
WHUUUUBBBASAAAGASDDWD!!!!!!!!!!!!!!!!
No more atmosphere here....
CFL violation detected, so model STOP
#####################################
# DECREASE DT !!!! #
#####################################
Abort called by computing node 345 at 2017-05-08 18:29:32.161 +0530
Abort called by computing node 329 at 2017-05-08 18:29:32.162 +0530
------------------------------------------------------------ --------------
MPI_ABORT was invoked on rank 345 in communicator MPI COMMUNICATOR 3 DUP FROM 0
with errorcode 1.
NOTE: invoking MPI_ABORT causes Open MPI to kill all MPI processes.
You may or may not see output from other processes, depending on
exactly when Open MPI kills them.
--RegardsSudipta GhoshPhD Scholar, Center for Atmospheric SciencesIndian Institute of Technology Delhi,India._________________
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