Le Sun, 04 Jan 2015 15:16:50 +0100
houssen <[email protected]> écrivait:
> With PVFS, can I expect to get speed-up in the 2 following cases:
> 1. Copy data (with scp or rsync) from local storage (my laptop) to
> the PVFS storage.
I suppose your PVFS storage is a cluster of some sort. Copying to an
orangefs FS through scp will make no difference. You may eventually
find better performance if you have installed the orangefs client on
your laptop and you're using the pvfs mount option, when copying
large files (several megabytes at the very least).
> If yes, do I have to do some specific tuning ? (ssh config file ?
> others ?)
> 2. Run a code that uses MPI-IO (or HDF5) to read or write (big) files.
> If yes, do I have to modify my code and / or re-compile MPI (or
> HDF5) with specific options to account for PVFS ?
If your PVFS cluster is installed with the MPIO libraries, it should
work without code modification. You may need some configuration though,
like running HDF5 with the proper destination storage parameters,
something like
HDF5_PREFIX=pvfs2:/myorangefs mpiexec /whatever/program
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