[Beowulf] Building new cluster - estimate

Robert Latham robl at mcs.anl.gov
Fri Aug 8 10:41:38 EDT 2008


On Wed, Aug 06, 2008 at 09:41:35AM -0400, Perry E. Metzger wrote:
> 
> Matt Lawrence <matt at technoronin.com> writes:
> > Could be.  Given the long and sordid history of NFS, I prefer to not
> > use it whenever there are practical alternatives.
> 
> NFS is a fine protocol and works very well. However, traditionally the
> Linux implementation of NFS has been of less than perfect quality. You
> shouldn't confuse NFS with NFS on Linux.

It is exceedingly difficult to perform correct parallel I/O on NFS,
let alone achieve high performance.  NFSv4 promises to make this
situation better.

==rob

-- 
Rob Latham
Mathematics and Computer Science Division    A215 0178 EA2D B059 8CDF
Argonne National Lab, IL USA                 B29D F333 664A 4280 315B
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