[MITgcm-support] Running a test in parallel

[Jody Klymak]

Hi Luis,

You must recompile `mitgcmuv` on the new computer.  Executable programs aren’t usually portable between architectures.  Hopefully there is a helpful file in `tools/build_options` to help w/ your genmake2 step.

Cheers,   Jody


> On 3 Feb 2017, at  10:53 AM, Luis Cebamanos <l.cebamanos at epcc.ed.ac.uk> wrote:
> 
> Hi all,
> 
> I am totally new to MITgcm, so apologies if I say any  nonsense. I m
> trying to run a test in parallel,so I started with
> global_ocean.90x40x15. I changed the SIZE.h to run on 4 mpi processes
> and built it successfully. Now, I am working on a Cray system, meaning
> that it has to be run on a different location. So I copied over to the
> right place /work/MITgcm/ the following directories from
> global_ocean.90x40x15:
> 
> global_ocean.90x40x15/input
> global_ocean.90x40x15/build/mitgcmuv
> tutorial_global_oce_latlon/input
> 
> I then created the directory /work/MITgcm/run and run the following:
> ln -s ../input/* .
> ../input/prepare_run
> ln -s ../mitgcmuv .
> 
> My script calls MITgcm:
> 
> aprun -n 4 -N 4 -d 1 ./mitgcmuv
> 
> It appears to start running properly but soon fails with the following
> errors:
> 
> lib-4016 : UNRECOVERABLE library error
>  A READ operation tried to read a nonexistent record (721).
> 
> Encountered during a direct access unformatted READ from unit 9
> Fortran unit 9 is connected to a direct unformatted unblocked file:
>  "bathymetry.bin"
> 
> lib-4016 : UNRECOVERABLE library error
>  A READ operation tried to read a nonexistent record (730).
> 
> lib-4016 : UNRECOVERABLE library error
>  A READ operation tried to read a nonexistent record (370).
> 
> 
> Could someone please help me to run a simple test case ?
> 
> Regards,
> Luis
> 
> 
> 
> 
> 
> 
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--
Jody Klymak    
http://web.uvic.ca/~jklymak/