[Beowulf] [gorelsky@stanford.edu: CCL:dual-core Opteron 275performance]

Greg Lindahl lindahl at pathscale.com
Wed Jul 6 18:28:02 PDT 2005


On Wed, Jul 06, 2005 at 04:12:25PM +0200, Alan Louis Scheinine wrote:

> On this same theme, the programs that are impacted by bandwidth to
> main memory seem to hit a limit for single-core CPUs of about 2.0
> GHz.

I don't think so. For a given speed of memory, the STREAM bandwidth on
Opteron increases slightly as the cpu gets faster. So there's no magic
line at any cpu speed, it's all about what speed of memory you can
use.

-- greg



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