Re: Counting of cores

[Joe Sapp]

On Thu, Nov 29, 2018 at 1:32 PM Ole Tange <ole@tange.dk> wrote:
>
> On Thu, Nov 29, 2018 at 2:08 AM Joe Sapp <sappj@ieee.org> wrote:
>
> > It seems like the number of physical compute cores counted by Parallel
> > is less than other tools (e.g., lscpu) by a factor of the number of
> > sockets, but I haven't tested it on many architectures.
>
> It seems you are right. Can I ask you to post output from
> /proc/cpuinfo from machines you have access to? I will then put that
> into the testsuite.

See attached /proc/cpuinfo.  It appears to have 48 processors thanks
to hyperthreading, but that is correctly counted by Parallel as the
number of threads.  There are 2 sockets and 12 compute cores per
socket, but Parallel only counts 12 cores.

Thanks,
Joe

cpuinfo
Description: Binary data