[petsc-users] Pthread support

[Barry Smith]

On Jul 24, 2012, at 1:55 PM, Jed Brown wrote:

> On Tue, Jul 24, 2012 at 1:44 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:
> For now you could simply turn off setting affinities when only a single thread is requested.
> 
> Longer term, I think we want to use CPU_COUNT, then use CPU_ISSET to fill in the current set. Then we'll partition that set among the threads in the pool. That's what I meant by "inherit" the process affinity. We should never be doing CPU_ZERO and adding in counting from zero.

    True

    But how do you know what cores the other processes on the machine are using? Couldn't they be anything?

   Barry