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10.5: New thread affinity API for OS X developers System 10.5
This hint is for all those OS X developers out there. I've been bothered for a while that OS X didn't export thread affinity scheduling to user-space. That is, the functionality for a programmer to tell the system that a particular thread should run on a particular processor core was not available.

With Leopard, Apple has released a Thread Affinity API to provide thread affinity hints to the kernel scheduler for improving data locality in caches, among other uses. While it is still not a full implementation like sched_setaffinity() is in Linux, it should make parallel programming a little bit more effective and portable.

Details on the API can be found here.

[robg adds: Clearly outside the realm of my skill set, but perhaps useful to a few of our readers...]
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