[Beowulf] Opteron downrates DDR400 to DDR333 performance?

Joel Jaeggli joelja at darkwing.uoregon.edu
Fri Feb 3 15:50:18 PST 2006

On Fri, 3 Feb 2006, Greg Lindahl wrote:

> On Fri, Feb 03, 2006 at 10:17:10AM -0800, Nate Faerber wrote:
>> So you could get 4GB of RAM on a processor if you use
>> single ranked DIMMs.

You can actually get 2GB single-ranked dimms now though they are $$.

Another generation of cpu/memory controllers will take us to FBdimms which 
will for the most part solve the issues here...

> The AMD Emerald cluster at their benchmarking center is built using
> single-ranked DIMMs. 144 nodes, Samsung single-rank memory,
> InfiniPath.  We love the performance.
> -- greg
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Joel Jaeggli  	       Unix Consulting 	       joelja at darkwing.uoregon.edu
GPG Key Fingerprint:     5C6E 0104 BAF0 40B0 5BD3 C38B F000 35AB B67F 56B2

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