[Beowulf] quad-socket opteron memory performance

Tom Elken tom.elken at qlogic.com
Fri Jan 11 13:13:58 EST 2008


 
> -----Original Message-----
> From: beowulf-bounces at beowulf.org 
> [mailto:beowulf-bounces at beowulf.org] On Behalf Of John Leidel
> Sent: Monday, January 07, 2008 8:14 AM
> To: beowulf at beowulf.org
> Subject: [Beowulf] quad-socket opteron memory performance
> 
> Does anyone have any recent memory performance numbers [specifically
> latency] from the quad-socket opteron's?

On a quad-socket system from a major system vendor with 4x Opteron 2218
(Rev. F, dual-core, 2.6 GHz),
I measure 90 - 92 nsec for memory latency,
5.5 GB/s for serial STREAM performance, and
17 GB/s for OpenMP STREAM w/ 8 threads, on 4 sockets.

-Tom 

> 
> --john 
> 
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