[MITgcm-support] Problems running the MITgcm in parallel

[Kevin Oliver]

Hello,

I'm running MITgcm on a beowulf cluster and Linux platform. There are two problems, which may be related, which mean I can't get it
to work in parallel.

1. When I use the genmake2 command, the option -mpi is not recognised. Using the -optfile option, I can link to a libraries for mpi
compilation, and it appears to compile successfully using mpich-gm and pgi (portland group compilers). However...

2. When I run the code in parallel, after (I think) 1 time step, the execution is stopped due to extreme values (there are lots of
nans, although not only nans). I get the message "Possibly you have different setenv PARALLEL and nThreads?" The equivalent run
works fine sequentially. I've read about parallel threads, but haven't managed to work out where to set these.

Thanks a lot,

Kevin

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Kevin Oliver
Senior Research Associate
School of Environmental Sciences
University of East Anglia
Norwich NR4 7TJ
UK
+44 1603 592759
K.Oliver at uea.ac.uk (or K.I.C.Oliver at uea.ac.uk)
www.uea.ac.uk/~e263
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