Hi all again,
I doing some tests for 2 different domains with CMAQ by changing the IBCON data. These are the configurations adopted:
- profile mode with default of CMAQ: using the file avprofile_cb6r3m_ae7_kmtbr_hemi2016_v53beta2_m3dry_col051_row068.csv
- IBCON provided by GEOS-Chem with resolution of 4x5 degrees
- IBCON provided by GEOS-Chem with resolution of 2x2.5 degrees
The simulations with configurations 2 e 3 are fine. They concluded with successful with 3-4 days using 2 nodes (total of 80 tasks).
However the first configuration (with default file of CMAQ) is taking too much time. Is someone knows why that is happening?
The only difference that I am finding in the logs are the HADV time, that i think it is causing the issue.
The parameters related to time-step length are equal for all configurations.
setenv CTM_MAXSYNC 720 #> max sync time step (sec) [ default: 720 ]
setenv CTM_MINSYNC 60 #> min sync time step (sec) [ default: 60 ]
setenv SIGMA_SYNC_TOP 0.7 #> top sigma level thru which sync step determined [ default: 0.7 ]
setenv CTM_ADV_CFL 0.75 #> max CFL [ default: 0.75]
Thank you in advance.