[Beowulf] x86-64 NUMA vs SMP kernel: appl. performance?

[Greg Lindahl]

> I have possible choice between using of SMP or NUMA-enabled x86_64 
> kernels (2.4.21 from SuSE Linux 9.0 distributive).

Mikhail,

If I wanted to make a single generalization about Opteron kernels, it
would be "Use a 2.6 kernel!" However, we've found that picking the
right compiler is an even larger effect.

-- greg