Am 27.09.2011, 09:08 Uhr, schrieb Robert Jacques <[email protected]>:
On Mon, 26 Sep 2011 13:20:01 -0400, Timon Gehr <[email protected]> wrote:
On 09/26/2011 05:59 PM, Jonathan M Davis wrote:
On Monday, September 26, 2011 11:43:52 Robert Jacques wrote:
Great, but MS still recommends benchmarking be done on a single core.
And if
MS thinks that is how benchmarking should be done, I think that's how
we
should do it.
And how would you ensure that? Beyond having your application be
single-
threaded, I'm not aware of any way to have any control over whether a
particular process is run on a single core or not. Generally, that
stuff is
completely managed by the OS and the hardware and is outside the
control of
the programmer. I'm not saying that there definitively isn't a way to
ensure
that a process only runs on one core, but I'm not aware of one.
- Jonathan M Davis
There are API functions to do that on any reasonable OS.
Such as SetThreadAffinityMask, which I mentioned in my original post.
sched_setaffinity (per process / Linux)
pthread_setaffinity_np (per thread / Posix)
