[RegCNET] CFL Violation Detected

[Mohamad Omar]

Dear Khan du,
Can you please send your namelist to know what is your resolution.  Because
the error as you mentioned came from the time step value.
Regards
On Jun 14, 2014 8:30 AM, "Khandu Khandu" <khandu2000 at gmail.com> wrote:

> Dear Users,
>
> I am very new super computing system and has encountered some problems
> running the RegCM4.4 in the cray machine. The basic tests was run on a
> interactive mode by allocating some nodes and ran successfully for the
> default European domain but the same job fails when run by submitting the
> job. Specifically, the error message was:
>
>  SRF variables written at 1990-06-03 09:00:00 UTC
>  $$$ 1990-06-03 12:00:00 UTC, ktau   =             1440
>  $$$ 1st, 2nd time deriv of ps   =  0.61801E-05 0.14347E-07
>  $$$  no. of points w/convection =     947
>  SEARCH BC data for   1990060318
>  READY  BC from       1990060312  to   1990060318
>  ATM variables written at 1990-06-03 12:00:00 UTC
>  SRF variables written at 1990-06-03 12:00:00 UTC
>  RAD variables written at 1990-06-03 12:00:00 UTC
>  WHUUUUBBBASAAAGASDDWD!!!!!!!!!!!!!!!!
>  WHUUUUBBBASAAAGASDDWD!!!!!!!!!!!!!!!!
>  WHUUUUBBBASAAAGASDDWD!!!!!!!!!!!!!!!!
>  No more atmosphere here....
>  No more atmosphere here....
>  CFL violation detected, so model STOP
>  CFL violation detected, so model STOP
>  #####################################
>  #####################################
>  #            DECREASE DT !!!!       #
>  #            DECREASE DT !!!!       #
>  #####################################
>
> The job script is given below:
>
> a. For the interactive mode - by allocating the mode
>           salloc --ntasks=32 (e.g. only)
>            aprun -n 32 ./bin/regcmMPI_clm45 regcm.in >regcm.out
> b. job script - run as sbatch regcm.sbatch
> ========================================================
> #!/bin/bash -l
> #SBATCH --job-name=test_001
> #SBATCH --account=director865
> #SBATCH --partition=workq
> #SBATCH --time=12:00:00
> #SBATCH --ntasks=8
> #SBATCH --ntasks-per-node=4
> #SBATCH --cpus-per-task=1
> #SBATCH --export=NONE
> module load intel
> module load cray-netcdf
> ./bin/terrain test_001.in >> test_001.out
> ./bin/clm2rcm test_001.in >test_001.out
> ./bin/mksurfdata test_001.in >test_001.out
> ./bin/sst test_001.in >test_001.out
> aprun -B ./bin/icbc test_001.in >test_001.out
> aprun -B ./bin/regcmMPI_clm45 test_001.in >test_001.out
> ===========================================================
>
> More information on the supercomputer can be found on:
> https://portal.ivec.org/docs/Supercomputers/SLURM
>
> I m doing some benchmarking tests on this machine which is pretty much
> running out of time. So I would like to request your help at the earliest.
>
> Thanking you.
>
>
> Khandu
>
> --
>
>
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