[Pw_forum] Seeking Advice on Small Hardware Platforms for PWscf Implementation

[Alexander Shaposhnikov]

Actually newer  Woodcrest/Clovertown Xeon platform  have dual independent 
FSBs, but this does not help much. Memory bandwidth available on each FSB is 
very limited - between  1/2 and 1/3  of what is available to modern desktop 
CPUs.

There is no good "server" computational platform today,  unfortunately  . 
AMD's CPUs have  weak FPU  and Intel's have weak memory subsystem. Intel- 
based desktop single-socket platform is the best choice for now.

On Tuesday 20 November 2007 14:33, Paolo Giannozzi wrote:
> On Nov 20, 2007, at 4:07 , Paul M. Grant wrote:
> >  Currently, I use two machines with dual Xeon processors
>
> dual Xeon? very bad choice. They have a single memory
> bus, so if you run two processes on the same motherboard,
> they spend most of the time waiting for access to memory.
>
> P.
> ---
> Paolo Giannozzi, Dept of Physics, University of Udine
> via delle Scienze 208, 33100 Udine, Italy
> Phone +39-0432-558216, fax +39-0432-558222
>
>
>
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