[Beowulf] MPI and Redhat9 NFS slow down

Mark Hahn hahn at physics.mcmaster.ca
Fri Aug 27 18:12:14 EDT 2004


> The sync option is the default export setting.

it's worth noting that sync is the default because async is "unsafe".
in the sense that clients being told that a write succeeds before the 
server is sure the data is physically on disk.  

this is pretty conservative; all my clusters use async.
take a walk on the wild side eh?

regards, mark hahn.


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