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From: john stultz <johnstul@us.ibm.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [PATCH] linux-2.6.3_ia64-cyclone_A2.patch
Date: Wed, 18 Feb 2004 21:52:03 +0000	[thread overview]
Message-ID: <1077141122.985.122.camel@cog.beaverton.ibm.com> (raw)
In-Reply-To: <1077136393.985.111.camel@cog.beaverton.ibm.com>

On Wed, 2004-02-18 at 13:41, David Mosberger wrote:
> Out of curiosity: what's the latency behavior for Cyclone?  Do all
> nodes access a single (shared) counter or is the counter replicated on
> each node and driven by a common clock?  My understanding that for
> SGI's platform it's the latter.

Unfortunately there is no replicated clock on this hardware, so all
nodes access the first counter on the first node. Not great, but correct
and slow is better then fast and wrong. 

thanks
-john


  parent reply	other threads:[~2004-02-18 21:52 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-02-18 20:33 [PATCH] linux-2.6.3_ia64-cyclone_A2.patch john stultz
2004-02-18 21:36 ` David Mosberger
2004-02-18 21:41 ` David Mosberger
2004-02-18 21:49 ` john stultz
2004-02-18 21:52 ` john stultz [this message]
2004-02-18 22:03 ` David Mosberger
2004-02-18 22:24 ` john stultz
2004-02-18 22:35 ` David Mosberger

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