[Bug 448346] Re: OpenMP "feature" causes massive performance issues on multi-cores

Vladimir snape at fastmail.fm
Fri Dec 25 16:34:53 UTC 2009


Yes. I have same experience. On my Intel Core 2Quad Q8300 (2,5GHz 4MB)
it takes over one minute to change EV Exposure Compensation. As soon, as
I start ufraw with OMP_NUM_THREADS=1, the change is almost instant (less
than 2 seconds).

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OpenMP "feature" causes massive performance issues on multi-cores
https://bugs.launchpad.net/bugs/448346
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