Re: 2x opteron single core or 1xdual core CPU server for Oracle?

derek123 wrote:
> What solution is better?:
> server with two single core CPUs or
> server with one dual core CPU.
> (the same clock rate).

In my opinion 2 CPU single cores.

In this way you can exploit the hypertransport and the single bus toward memory and the NUMA architecture (every single-core CPU in a SMP system doesn't share its memory channel).

Less contention and higher memory throughput.

Disadvantage: oracle license a little bit more expensive (1/3).

To compare SC and DC operon:
http://www-03.ibm.com/servers/eserver/opteron/pdf/IBM_dualcore_whitepaper.pdf

Just a question for windows guru: is windows NUMA and multicore aware?

Regards

-- 
Fabrizio Magni

fabrizio.magni_at_mycontinent.com

replace mycontinent with europe