Launch program with python on a specific core

there is any way to launch program by its API using python and run it on a specified core?

i need to launch a cpu-expensive application about 5 times and run it on different core in order to save time.

i’m using windows

Answer

The process can set its own affinity, here is what I do (you can change the mask, or make it a parameter, to identify which cores you want to use.)

import win32api, win32con, win32process

def setaffinity():
    pid  = win32api.GetCurrentProcessId()
    mask = 128 # core 7
    handle = win32api.OpenProcess(win32con.PROCESS_ALL_ACCESS, True, pid)
    win32process.SetProcessAffinityMask(handle, mask)