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Re: cpu usage capped?
> 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.
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