[concurrency-interest] Some interesting (confusing?) benchmark results

Holger Hoffstätte holger.hoffstaette at googlemail.com
Wed Feb 13 08:47:50 EST 2013


On Wed, Feb 13, 2013 at 9:33 AM, √iktor Ҡlang <viktor.klang at gmail.com>
wrote:

> Is there a way to know how many physical processors are available on the
> JVM?

Not really, and why this is almost impossible to implement in a
simplistic way can be readily seen when you look what
http://www.open-mpi.org/projects/hwloc/ does. Add NUMA and other
heterogenous HW (GPGPUs, weaker cores etc.) to the mix and "the number"
rapidly ceases to have any meaning.

Holger



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