Dell to start selling AMD Opteron Servers

[Olle Liljenzin]

David Hubbard wrote:
> I'm
> curious to see what others are seeing percentage-wise
> for how much the second core really gives you versus two
> cpu's.

I just finished some runs on an HP DL585 with 4x875. Our application is 
cpu and memory intensive and is therefore not scaling perfectly on all 
architectures. Our processes are single threaded and we run one process 
per core to get best performance.

Our reference machine is an Opteron 250 that has no measurable 
scalability problems. Note that the 875 has a slightly slower clock 
frequency, 2.2GHz compared to 2.4GHz for the others:

Model	# jobs	run time
250	1	100%
250	2	100%
280	1	100%
280	4	105%
875	1	115%
875	8	130%

And yes, we would buy more Dell machines if they offered Opteron servers 
at a competitive price.

/Olle