> I have some code that takes advantage of 8 cores on my machine using > OpenMP. Under plain ol windows, this code causes all the CPUs to max > out at 99%. But when recompiled for cygwin, each core jumps to about > 85%. The rest is not being used by other processes. Could someone > explain why this is the case?
Obviously, Cygwin gets the job done with less CPU utilization, handing you back 15% of your machine. And you're complaining? ..mark P.S. A more helpful response can likely only occur if you spell out more specifically which varieties of apples and oranges you're comparing. For starters: "plain ol windows", is that MSVC or MinGW? Is disk I/O involved? What OS and environment (e.g., VM? TS?). I'm pretty sure I'm only scratching the surface here. We don't know what your code does other than use OpenMP. -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
