Just curious if GFS can be used in a HPC environment, like GPFS or Oracle OCFS2?
I don't think so. Comments from people in the HPC-business indicate that it doesn't scale to the number of nodes that typically forms these kinds of environments.
NFS still rulez there, together with more (ISILON/Panasas) or less (SUN) specialized NFS-serving-gear. Rainer
NFS (<4.1) doesn't scale either. I would say that GPFS and Lustre is more usable than NFS in an HPC environment. You need a parallell file system when the data rates gets higher. But much depends on the I/O-profile of the jobs.
/jens