Re: [swanmodel-users] Long Simulations with Multiple Output Files

[João A. <ja...@au...>]

Hello Gustavo,

It is possible to set more than one output per variable, however, as far as
I know SWAN won't stop adding data to the former one. For example, if you
set this output:

BLOck 'COMPGRID' NOHEAD 'Hs_era5_2015.mat' LAY 4 HSIGN OUTput
20150101.000000 60 MIN
BLOck 'COMPGRID' NOHEAD 'Hs_era5_2016.mat' LAY 4 HSIGN OUTput
20160101.000000 60 MIN

SWAN will start writing the file 'Hs_era5_2016.mat' at the first of January
of 2016, but it will continue to add data to your 2015 file. In this case,
depending on your grid's resolution the model will crash whenever your .mat
file reaches the limit size of 4GB (or 8GB, not sure right now).

If you are running SWAN on a cluster I'd recommend you to run SWAN in
yearly or 6-monthly simulations. In this case, instead of using hotfiles,
which would tie you to one serial run, you can increase your parallelism by
warming up your grid with about 36 hours (please double check whether this
interval works for you as your mileage may vary) of previous boundary and
wind forcings before the first output cycle.

Good luck,
João

On Mon, 1 Jun 2020 at 10:39, gustavo souza correia <
gus...@ho...> wrote:

> Dear Colleagues,
>
> I'm working on a hindcast of several years and I want to know if it is
> possible to make the SWAN write more than one output per variable, that is,
> in addition, write each variable from year to year, without having to do
> several simulations.
>
> Currently this part of the script looks like this, but I want to let the
> model run for more years in order to generate annual outputs:
>
> $
>
>  BLOck 'COMPGRID' NOHEAD 'Hs_era5_2015.mat' LAY 4 HSIGN OUTput
> 20150101.000000 60 MIN
>  BLOck 'COMPGRID' NOHEAD 'Dm_era5_2015.mat' LAY 4 DIR OUTput
> 20150101.000000 60 MIN
>  BLOck 'COMPGRID' NOHEAD 'Dp_era5_2015.mat' LAY 4 PDIR OUTput
> 20150101.000000 60 MIN
>  BLOck 'COMPGRID' NOHEAD 'rTp_era5_2015.mat' LAY 4 RTP OUTput
> 20150101.000000 60 MIN
>  BLOck 'COMPGRID' NOHEAD 'Tm01_era5_2015.mat' LAY 4 TM01 OUTput
> 20150101.000000 60 MIN
>  BLOck 'COMPGRID' NOHEAD 'sTp_era5_2015.mat' LAY 4 TPS OUTput
> 20150101.000000 60 MIN
>  BLOck 'COMPGRID' NOHEAD 'wind_era5_2015.mat' LAY 4 WIND OUTput
> 20150101.000000 60 MIN
>  BLOck 'COMPGRID' NOHEAD 'grid.mat' LAY 4  XP YP
>  $
>  $
>  $
>  $
>  TEST  ITEST= 1     ITRACE= 1
>  COMPUTE NONSTAT 20150101.000000 15.00 MIN 20151231.230000
>  HOTF 'hot_1_20151231.230000'  FREE
>  STOP
>
>
> Thank you in advance!
>
> Gustavo Correia.
>
>
> ______________________________________________________________________________________
>
> Gustavo Souza Correia
>
> Mestrando em Geociências pela Universidade Federal do Rio Grande do Sul -
> UFRGS
>
> Oceanógrafo pela Universidade Federal do Maranhão - UFMA
>
> Técnico em Meteorologia pela Universidade Estadual do Maranhão - UEMA
>
> Currículo lattes CNPQ: http://lattes.cnpq.br/5164631760543791
>
>
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> swanmodel-users mailing list
> swa...@li...
> https://lists.sourceforge.net/lists/listinfo/swanmodel-users
>


-- 
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