[MITgcm-support] MITgcm 40km resolution Arctic simulation

Thu Oct 17 10:00:37 EDT 2013

Hi again Dimitris (CC MITgcm)

Some progress. I've downloaded the
http://ecco2.jpl.nasa.gov/data1/arctic/code2/ and
http://ecco2.jpl.nasa.gov/data1/arctic/run_template2/ as you suggested and
have compiled (I think) successfully.

I put all the files from the "run_template2" directory into a /input
directory as I believe is standard.

When I try and run the executable, I get the following error 16 times (one
for each of the 16 processors defined in the SIZE.h file, nPx=2, nPy=8)...

*ABNORMAL END: S/R INI_PARMS*

I assume this means that I am missing a boundary condition file somewhere?
Do I need to download some more files from
http://ecco2.jpl.nasa.gov/data1/arctic/ ?

Thanks again

Jonny

On 16 October 2013 17:41, Menemenlis, Dimitris (3248) <
Dimitris.Menemenlis at jpl.nasa.gov> wrote:

>  Hi Jonny, you need to add
>  #define OLD_GRID_IO
>  in CPP_OPTIONS.h
>
>  The 40-km set-up hasn't been touched for quite a while so there will be
> several
> options and parameters that are out of date.
>
>  If you do manage to get it to work, please send updated code and input
> files
> and I will check them in for next user.
>
>  As a possible guideline of things to change, one place that might be
> helpful is:
> http://mitgcm.org/viewvc/MITgcm/MITgcm_contrib/MPMice/beaufort
> (although there's coupled code stuff there that you don't need).
>
>  Also slightly less out of date set-up available here:
> http://ecco2.jpl.nasa.gov/data1/arctic/code2/
> http://ecco2.jpl.nasa.gov/data1/arctic/run_template2/
> This is a 36-km set-up and the nice thing is that there
> is open boundary conditions available from ECCO2 project
> and a whole bunch of increasingly higher-res configs, all the
> way to 1-km horizontal grid spacing ready to go.
> Again, if you use any of the above and you find
> discrepancies or updates, please let me know and
> I will try to help and also update the instructions for next user.
>
>  I cc MITgcm support for more suggestions.
>
>  Cheers
>
>  Dimitris Menemenlis
>
>  On Oct 16, 2013, at 4:42 AM, Jonny Williams wrote:
>
>  Hi again!
>
>  I've now managed to download the files I need I think and have been
> going through some run-time error
>
>  The first error was as follows
>
>  *S/R INI_PARMS: "thetaMin" no longer allowed, has been replaced by
> "xgOrigin"*
> *S/R INI_PARMS: "phiMin" no longer allowed, has been replaced by
> "ygOrigin"*
>
>  I have managed to get round by replacing thetaMin and phiMin with
> xgOrigin and ygOrigin respectively.
>
>  The second error was as follows
>
>  *S/R INI_PARMS: tauSaltClimRelax > 0 but*
> *S/R INI_PARMS: saltClimFile is undefined*
>
>  I have fixed this for now by setting tauSaltClimRelax=0
>
>  The error which has floored me now is the following
>
>  *PGFIO-F-209/OPEN/unit=9/'OLD' specified for file which does not exist.*
> *File name = tile001.mitgrid*
> *In source file mdsio_facef_read.f, at line number 740*
>
>  The offending line in mdsio_facef_read.f reads
>
>  *OPEN( dUnit, file=fName(1:iLen), status='old',*
>  *
> *
> I have done a 'grep' search in the arctic40km directory and there is no
> mention of tile001.mitgrid at all so perhaps this code is out of date?
>
>  Do you have any ideas about how to fix this issue?
>
>  Many thanks once again. I'm looking forward to getting this model
> running!
>
>  Jonny
>
>   On 11 October 2013 21:00, Menemenlis, Dimitris (3248) <
> Dimitris.Menemenlis at jpl.nasa.gov> wrote:
>
>> Hi Johnny, the files you are looking for appear to be available here:
>>
>> http://mit.ecco-group.org/datasets/MITgcm_input_files/MITgcm_contrib/arctic40km/input/
>>
>>  Cheers
>>
>>  Dimitris Menemenlis
>>
>>  On Oct 11, 2013, at 10:20 AM, Jinlun Zhang wrote:
>>
>>  Hi Jonny, I doubt it is still available. But I am not sure and
>> referring this to Dimitris. Dimitris, could you help Jonny - thanks.
>> Best,
>> Jinlun
>>
>> On 10/11/2013 2:10 AM, Jonny Williams wrote:
>>
>> Dear Dr Zhang
>>
>>  I am a postdoc researcher at the University of Bristol in the UK and I
>> am starting to work on regional ocean modelling. I am trying to download
>> and run the "arctic40km" configuration and the documentation for this
>> states that users should contact you when trying to do this.
>>
>>  I have downloaded the base directory (cvs co -d arctic40km
>> MITgcm_contrib/arctic40km) but when I try to download the input data (wget
>> -nd -r -A"*.bin"
>> http://channel.mit.edu/datasets/MITgcm_input_files/MITgcm_contrib/arctic40km/input)
>> the download fails with the following error...
>>
>>  "Connecting to channel.mit.edu|18.83.0.150|:80... failed: Connection
>> timed out."
>>
>>  Do you know is it still possible to run this example?
>>
>>  Many thanks for any assistance that you are able to provide!
>>
>>  Best wishes
>>
>>  Jonny Williams
>>
>>
>

-- 
Dr Jonny Williams
School of Geographical Sciences
University of Bristol
University Road
BS8 1SS

+44 (0)117 3318352
jonny.williams at bristol.ac.uk
bit.ly/jonnywilliams
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