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Basu

Member

From: Cornell University

Registered: 2006-12-15

Posts: 296

Website

Assigning a thread to a core

For my honors thesis I'm experimenting with creating an object oriented programming language where objects are automatically assigned to cores on a multicore CPU. Though I'm familiar with the general hardware structure of multicore CPUs I don't know how the software interface works. In particular, I want to know if it's possible to poll a CPU for information about it's cores and then assign a process thread to a particular core? I've done some reading and it seems that in general the OS scheduler handles this. Is there someway around this?
Thanks,
Basu

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The Bytebaker -- Computer science is not a science and it's not about computers
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karol

Archivist

Registered: 2009-05-06

Posts: 25,440

Re: Assigning a thread to a core

> assign a process thread to a particular core
I'm not sure if you can do this in Linux.

tavianator

Member

From: Waterloo, ON, Canada

Registered: 2007-08-21

Posts: 859

Website

Re: Assigning a thread to a core

man sched_setaffinity will tell you how to bind a task to a set of processors/cores/threads (in the hyperthreading sense).  See also man taskset.

/proc/cpuinfo will tell you which processor ids correspond to which actual processors and cores and everything else.  Not sure if there's a more programmatic way to glean this knowledge.