Incomplete CCTM run

CMAQ Run Time Errors and Issues
1

Hi,
I was trying to simulate a 3-day run ( Nov 1 to Nov 3). It looks like it is creating the first-day output properly. But on the second day (Nov 2) it got stuck. I am attaching the last few lines from the CCTM log files as I didn’t find any error.

###…######
Timestep written to A_CONC_1 for date and time 2016306:230000
S_CGRID :/gpfs_common/share03/fgarcia4/safrin/cmaq-5.2.1-intel2018.2.199/data/output_CCTM_v521_intel2018.2.199_12km_5day/CCTM_CGRID_v521_intel2018.2.199_12km_5day_20161101.nc

 >>--->> WARNING in subroutine OPEN3
 File not available.
 
 Could not open S_CGRID file for update - try to open new
 Value for IOAPI_LOG_WRITE:  F returning FALSE

 Timestep written to S_CGRID          for date and time  2016307:000000


 >>---->  Program completed successfully  <----<<                                                

 Date and time 0:00:00   Nov  2, 2016   (2016307:000000)

…###

I checked the existence of the “/gpfs_common/share03/fgarcia4/safrin/cmaq-5.2.1-intel2018.2.199/data/output_CCTM_v521_intel2018.2.199_12km_5day/CCTM_CGRID_v521_intel2018.2.199_12km_5day_20161101.nc” by using ls -lrt. It is there. I am not getting any clue how to solve this problem and proceed the run for the rest of the days.

Thanks,
Sadia

2

Hi, Sadia;

I am running 3-day simulation in January and had the same issue yesterday. I did the following steps and it works.

setenv CTM_MAXSYNC 720
setenv CTM_MINSYNC 60

setenv IOAPI_LOG_WRITE F
setenv FL_ERR_STOP N
setenv PROMPTFLAG F
setenv IOAPI_OFFSET_64 YES
setenv IOAPI_CHECK_HEADERS N
setenv IOAPI_CFMETA YES

Hope this helps.

Yijia

1 Like
3

And there are also a couples places in the CMAS forum encountered by others previously. It would be helpful to go over those posts with CGRID output writing issue.

4

Hi Yijia,

Thank you so much for your response. I followed the steps you mentioned and it helped me to complete the 3-day simulation. But now when I am trying to set a longer simulation for 15 days. It is again having the same issues and stopping after the 6th day. Maybe it would be better for me to have an in-depth idea about which parameter is controlling these things.

However, I appreciate your concern.

Thanks,
Sadia