I'm using the latest version of cpuminer on a quad core cpu. How can I tell it which physical cores to use, 2 threads uses 1 and 2 but I want it to use 3 and 4 instead as I have other things using core 1 and 2 which are not optimised for more than 1 cpu core.

2 Answers 2


Don't worry about it, just let your OS take care of the scheduling. As long as you're not trying to run more CPU-bound threads than you have cores, you'll be running as efficiently as you can. Even a single threaded program will bounce around between cores (you can see this by looking at a CPU usage graph, and your single threaded program will probably use 25% of each of a quad core system on average).


CPU mining for what, Primecoin? Sure the CPU can mine however, with GUIMiner you can use CPU OR GPU

Use the GUIMiner tool or GuiMiner-scrypt, very easy to check/uncheck cpus , or write a quick batch file that does this.

I would not let windows do this, as all the people mining with open rigs are using config files like bat on windows or other files on linux etc..

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.