[gridengine users] Core Binding on Magny-Cours
d.love at liverpool.ac.uk
Wed Mar 16 15:05:19 UTC 2011
"Esztermann, Ansgar" <Ansgar.Esztermann at mpi-bpc.mpg.de> writes:
> That's exactly what I'd expect...
Good. I've only just encountered Magny-Cours, and I'm not sure I
> The interface at /sys/devices/system/cpu/cpuN/topology/ doesn't know
> about NUMANodes, only about Sockets and cores. Thus, cores #0 and #4
> in the output above have the same core ID, and SGE interprets that as
> being one core with two threads.
Anyhow, sufficiently recent Linux does expose the information (under
/sys/devices/system/node/), it's just that PLPA doesn't use it by
I guess that it would be a fairly straightforward project for someone to
try replacing PLPA with hwloc without needing to know much about GE
internals. If anyone is interested, see
As well as helping with architectures like Magny-Cours, it would
introduce support for more platforms than Linux and Solaris.
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