Re: [swanmodel-users] Swan fails to merge output

[João A. <ja...@au...>]

Dear Clement,

When I went through the "Too many open files" message _in a completely
different setup_ I changed the "highest file ref. number" in my swaninit
file. SWAN creates this file at its first run, so check the value you have
and increase it to a number that is compatible with the amount of files
you'll be dealing with during your runs.

I see you are looking for error messages. Are you looking for them in
SWAN's .prt and .erf files?

Best,
João

On Thu, 4 Jun 2020 at 05:21, Clement Calvino <cle...@uc...>
wrote:

> Dear Users,
>
> I have tried recently to run long simulations of my SWAN stand-alone model
> for a coastal application (4 months long with 180s time-step). But if short
> runs are terminating without issue for some reasons when running longer
> simulations SWAN fails to merge properly the output files. I am using the
> SWAN version within COAWST, but running SWAN as a stand-alone application.
>
> Very rarely I manage to get an error message about "Too many open files",
> I have tried without success to increase the limit when submitting my job
> (ulimit -n 999999).
> At best I managed to get a merged output file but the files per processor
> were not deleted, it happened when I asked for one single table output. I
> have tried reducing the duration of the run to only two or one months,
> reducing the number of processors, number of output files and number of
> boundary input files but nothing solved the issue...
>
> What annoys me is that I don't know what parameters I should focus on to
> reduce the number of files opened during the run, would anyone know which
> subroutine could be responsible for opening massive amounts of files?
>
> Thank you in advance,
> Clement
>
> --
> Clement Calvino
> PhD Student
> School of Mathematics and Statistics
> University College Dublin
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-- 
João Claudio Albuquerque
PhD. Candidate, School of Environment, The University of Auckland,
Level 4, Room 449, Science Centre, 23 Symonds Street, Auckland, NZ.
+64 021 02365705