Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I write a little raytracer and i’d like to query how many cpu cores (or virtual cpu cores if the cpu uses hyperthreading) the current computer offers, such that i can instanciate as many threads to get better parallel rendering.
How can I do that using C++?
thanks!
You can get the number of physical processors by calling
GetSystemInfoand checking thedwNumberOfProcessorsfield of theSYSTEM_INFOstructure. You can get the number of logical processors by callingGetLogicalProcessorInformation.