[Beowulf] Building new cluster - estimate

Perry E. Metzger perry at piermont.com
Fri Aug 8 12:54:23 EDT 2008

Robert Latham <robl at mcs.anl.gov> writes:
> 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.

Not really true. There are whole firms that base their business on
doing it well, like Netapp.

> NFSv4 promises to make this situation better.

It promises to improve all sorts of things in NFS.

Perry E. Metzger		perry at piermont.com
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