low-latency high-bandwidth OS bypass user-level messaging forcommodity(linux) clusters with commodity NICs(<$200), HELP!(GAMMA/EMP/M-VIA/etc.)
jcmcknny at uiuc.edu
Mon Dec 16 23:50:06 PST 2002
Perhaps the P4 isn't that great, but it's an Intel 850E chipset, not
sure that it sucks :)
http://usa.asus.com/mb/socket478/p4t533-c/overview.htm is the
Myrinet even says that you can't expect anymore than 100MB/sec-130MB/sec
out of myrinet on 32-bit 33Mhz with the best chipset.
They also say system dependencies can provide latencies from 6.5us to
Anyways, ya, I don't think any P4 system is a great myrinet host.
> -----Original Message-----
> From: Patrick Geoffray [mailto:patrick at myri.com]
> Sent: Tuesday, December 17, 2002 1:38 AM
> To: jon
> Cc: Beowulf cluster mailing list; becker at scyld.com
> Subject: Re: low-latency high-bandwidth OS bypass user-level messaging
> forcommodity(linux) clusters with commodity NICs(<$200),
> Hi Jon,
> On Mon, 2002-12-16 at 05:46, jon wrote:
> > Currently with Myrinet on P4 I get 17us latency and 80MB/sec
> Throw your machine to the garbage and buy a P4 with a decent chipset,
> > Why is the OS-bypass so hard? If wanting no TCP support, isn't it
> > easier than writing standard linux driver? (like you've done a lot!)
> The last time I talked to Pete Wyckoff (SC02), he was not working on
> anymore. It would be interesting to get his view on the problem (Pete
> My 2 cents.
> Patrick Geoffray, Phd
> Myricom, Inc.
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