[cfarm-users] Nice on GCC202?

Baptiste Jonglez baptiste at bitsofnetworks.org
Fri Mar 9 00:19:42 CET 2018


On 08-03-18, Jeffrey Walton via cfarm-users wrote:
> Hi Everyone,
> GCC202 is a Sparc64 machine. It has 16 cpus and each cpu has 16 cores
> for a total of 256 virtual cpu's.

Where did you see those 256 "virtual cpu's"?  According to htop,
/proc/cpuinfo and https://cfarm.tetaneutral.net/machines/list/ it only has
16 "threads".

As far as I can remember, it's a virtual machine with only 2 CPU cores of
the physical machine, each core having 8 "threads", although it seems to
be quite different from Intel Hyperthreading.  Linux does not understand
such subtleties and just sees each "thread" as a separate CPU.

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