[MITgcm-support] MITgcm online tutorial problems

[Martin Losch]

Hi Jonny,

many of the verification experiments use common files that need to be linked into the run-directory (this is done to reduce the size of the download). Consequently, they fail, if you haven't done that. The easiest way of linking these files is to run "testreport" on them: 
cd MITgcm/verification
./testreport
will compile and run all verification experiments
./testreport -t 'exp2 tutorial_global_oce_latlon'
will compile and run only the specified experiments (exp2 and tutorial_global_oce_latlon in this case).

Did the output files appear as they should?

MITgcm_contrib/high_res_cube
MITgcm_contrib/quarter_degree_global
use fairly big grids, but you'll have to get the initialization/forcing data (or create it yourself), I think you can search the email archive for downloading instructions for the forcing data.

Martin

On Jun 7, 2013, at 11:33 AM, Jonny Williams <Jonny.Williams at bristol.ac.uk> wrote:

> Hi again
> 
> As you suggested, running tutorial_global_oce_latlon was successful although most of the other tutorials failed with various errors concerning missing files.
> 
> Fundamentally I want to try running a high resolution (approx 1/3 degree or even higher) global or regional model to get an idea of run times etc so if anyone could point me in the direction of something like that then that would be much appreciated. 
> 
> Apparently there used to be some examples in the MITgcm_contrib CVS repository but they are not longer there...
> 
> Many thanks
> 
> Jonny
> 
> 
> On 6 June 2013 10:38, Martin Losch <Martin.Losch at awi.de> wrote:
> Jonny,
> 
> as far as I can see exp2 does not use netcdf (there is no useMNC=.true., in input/data.pkg nor any "mnc"-line in code/packages.conf). I think it makes more sense to start with the actual "tutorials" (I know, exp2 unfortunately is the first example in section 3 of the manual). These "tutorial experiments" start with "tutorial_", e.g. "tutorial_global_oce_latlon" is similar to exp2. It's also described in the manual <http://mitgcm.org/public/r2_manual/latest/online_documents/node129.html>
> 
> The output files should all be in the "working directory" where you run the model (i.e. the mitgcmuv-executable writes to "./" by default)
> 
> Martin
> On Jun 4, 2013, at 4:16 PM, Jonny Williams <Jonny.Williams at bristol.ac.uk> wrote:
> 
> > Hi there
> >
> > I am brand new to running the MITgcm but am an experienced climate modeller.
> >
> > I am trying to run the MITgcm online tutorials, specifically the experiment called "exp2" in the verification folder in the MITgcm directory tree as successfully downloaded using CVS.
> >
> > I am able to compile the job OK (I think) but when I come to run the job and examine any output I get nothing at all, although my "output.txt" (as described here) seems to be pretty much the same as what is expected from the example in the results/output.txt file.
> >
> > I believe that I have my NetCDF libraries set up correctly.
> >
> > On this webpage, various output streams are detailed but none of them are being produced. Notably, there is no information given as to where to expect these results to be put. In addition to this on the same webpage, the files code/packages.conf and input/data.pkg files are discussed but no information is given as to how to use them.
> >
> > Is it possible to give me any further tips on how to proceed?
> >
> > Many thanks for your help.
> >
> > 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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> 
> 
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> 
> -- 
> 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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