Re: Minutes from Feb 21 LSE Call

Larry McVoy
2003-02-22T23:18:54Z

On Sat, Feb 22, 2003 at 02:17:39PM -0800, William Lee Irwin III wrote:
> On Sat, Feb 22, 2003 at 05:06:27PM -0500, Mark Hahn wrote:
> > ccNUMA worst-case latencies are not much different from decent
> > cluster (message-passing) latencies.
>
> Not even close, by several orders of magnitude.

Err, I think you're wrong. It's been a long time since I looked, but I'm
pretty sure myrinet had single digit microseconds. Yup, google rocks,
7.6 usecs, user to user. Last I checked, Sequents worst case was around
there, right?
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Larry McVoy lm at bitmover.com http://www.bitmover.com/lm