On 29 Mar 2008, at 4:09 pm, Alan Louis Scheinine wrote:
I recommend giving two facts
number of nodes
number of cores
A node is a box of CPUs that share memory.
A core is, well, what everyone calls a core.
In my opinion, the most ambiguous term is the
number of CPU's because some people use the term CPU
to refer to the number of sockets and others use
the term to refer to the number of cores.
For a more fine-grained description you can
cite, in addition, the number of sockets and
the number of cores per socket.
Just to be awkward, there are of course machines like the SGI Altix.
Is it a cluster, or is it a node? From the programmer's perspective
it's the latter, from the architectural perspective, the former.
There's no real dividing line; there are machines across the entire
spectrum. But I'm just being difficult, generally I agree with what
the others have said.
Tim
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