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Possible Duplicate:
Programmatically find the number of cores on a machine
I have a multi-threaded C++ program that runs on Windows, MacOS and Linux. Is there an easy way to find out how many cores the machine on which I am running currently has? My system runs best when it has 1 thread for each core.
I believe this question may contain your answer:
Programmatically find the number of cores on a machine
Edit: I just voted up ybungalobill’s answer. I love
boost!