Thanks - interesting document!
--bob
On Nov 2, 2006, at 11:37 AM, Robert Latham wrote:
On Thu, Nov 02, 2006 at 10:59:51AM -0600, Robert Olson wrote:
The nodes in my cluster have dual Gig-E nics (tigon3). I'm pondering
the installation of a second gigE switch to attach them all with a
private storage network, and run it with jumbo frames. Do you think
I'd see a significant performance increase with PVFS in this
configuration?
Hi Bob
We definitely expect jumbo frames to help out pvfs a lot. Ti's had
good results on the teragrid, for example [1]. Unfortunately, I don't
think anyone has quantified the benefit.
I'm also curious if folks have experimented with the effects of the
TCP segment offload stuff that is available on these NICs.
Again, should help PVFS a lot, but we've got no hard data.
==rob
[1] http://www.teragridforum.org/mediawiki/index.php?title=TG-11
--
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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