Processor Scalability and Linux

[JD]

  On 08/10/2010 06:13 AM, Matthew J. Roth wrote:
> JD wrote:
>> To do that, you need a library interface or sysctl command line
>> that would "affine" the process and it's threads to
>> to a set of cpu's (I am not certain if there is granularity here
>> as far as selecting a subset of cores from a cpu).
> JD and Michael,
>
> Take a look at taskset:
>
>    taskset is used to set or retrieve the CPU affinity of a running
>    process given its PID or to launch a new COMMAND with a given CPU
>    affinity.  CPU affinity is a scheduler property that "bonds" a
>    process to a given set of CPUs on the system.  The Linux scheduler
>    will honor the given CPU affinity and the process will not run on
>    any other CPUs.
>
> Regards,
>
> Matthew Roth
> InterMedia Marketing Solutions
> Software Engineer and Systems Developer
Thank you Matt! I am glad Linux has kept up with this
area which is becoming more and more important as
cpu's multiply their cores.
Perhaps there will be a refinement that will allow
the setting of core affinity as well.
AMD released the 8-core cpu in 2009

http://www.google.com/url?sa=t&source=web&cd=1&ved=0CB4QFjAA&url=http%3A%2F%2Fwww.guru3d.com%2Fnews%2Famd-unleashes-hydra-8-core-cpu-in-2009%2F&ei=DnhhTKCRCZH0swPX4K3NCA&usg=AFQjCNEatbZxHgmbm1a300qyI-TP6Giupw

16 core cpu's are on the horizon, if not already in production.
So I hope the affinity code will be refined to allow selecting
a set of cores as well.