run COAWST with error "too many open files " #343

thankyouforhelp · 2024-12-21T12:10:43Z

When I use COAWST version v3.7 (ROMS-WRF-SWAN) for simulation, if I simulate for two days, COAWST can run to completion normally and without reporting errors. When I set the simulation time of the three models to one month, at the end of the simulation, ROMS shows “done” and WRF shows “success”, but there is an error “too many open files”, I found that SWAN didn't merge the intermediate files into a single file, it is still the original file. I realized that swan didn't merge the intermediate files into one file, it is still in the original state, has anyone encountered this problem? Thanks for your help!swan.in is set up as follows

thankyouforhelp · 2024-12-21T12:55:14Z

The output of the swan model is as follows, the intermediate files were not deleted and no Errfile* file was generated, I used grep -i “error” PRINT* on the generated PRINT* file and no errors were found.

jcwarner-usgs · 2024-12-23T13:37:46Z

i am not sure why it would work for a shorter time period but not for a longer time period.
make sure roms and wrf also go for 31 days (dec 31 + 21 days of Jan).
i cant go back to ver3.7, so you might want to try v3.8.
-j

thankyouforhelp · 2024-12-24T12:16:52Z

Thank for the advice , I will have a try.

thankyouforhelp · 2024-12-28T07:58:17Z

I ran three experiments later, one in COAWSTv3.7 for 2 days and 16 days respectively, and all of them ended normally. In addition, I also ran COAWSTv3.8 for a month (32 days) as you said before, and there were still too many files error when running (see the first figure below), and then the swan did not merge the files into one file (see the second figure below). The set swan output mode is as follows (see the third figure below), in addition, roms and wrf have finished running, showing done and success respectively (see the fourth and fifth pictures), looking forward to your reply, thanks!