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# Note about file size limits
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The file size limit (set with ulimit -f in bash) defaults to 4TB on Irene. Need to run 'ulimit -f unlimited' when working with large files. MPI processes don't seem to inhreit the limit but it causes problems with cp, rsync etc.
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# Useful commands
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Start an interactive shell on a compute node with X forwarding (e.g. to use DDT):
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