decrease in CPU for Parallel processing job with time
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I am running a longish (~6 hour) simulation using the parallel processing toolbox. The Activity Monitor on my 4-core i7 iMac shows User activity of 75% of available CPU time with a small amount of idle time (~20%) at the start, but over time, the User fraction drops to <20% and the idle time increases to >75%. Can anyone explain this slowdown please?
Thanks,
Andy
5 件のコメント
Walter Roberson
2019 年 7 月 17 日
The factor I refer to would typically not be relevant until more than 90 percent was done, except in cases where there were big differences in processing time.
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