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A comment on Composable multi-threaded parallelism in Julia. Parent comment

Re:Composable multi-threaded parallelism in Julia by chrisseaton on Tuesday July 23, 2019 @07:52PM (#20511229)
> precisely why you don't run any more OS threads than the number of cores

It’s often worth running more than your number of cores, in order to keep execution units busy during memory fetches for example, or integer units busy while float units are a bottleneck otherwise. (Did a PhD partially on this kind of thing.)

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Re:Composable multi-threaded parallelism in Julia by BubRoss on Tuesday July 23, 2019 @08:18PM (#20511342)
That's what hyperthreading is for, which implies having the same number of threads as logical cores.

Hyperthreading and out of order execution are meant to accomplish keeping the execution units busy.

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Re:Composable multi-threaded parallelism in Julia by chrisseaton on Tuesday July 23, 2019 @08:39PM (#20511430)
No it implies having the same number of OS threads as hardware threads, which is more than the number of hardware cores.
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Re:Composable multi-threaded parallelism in Julia by BubRoss on Wednesday July 24, 2019 @12:14AM (#20512320)
That's what logical cores means. Hardware threads / hyper threads are also called logical cores by the bios and OS.
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Re:Composable multi-threaded parallelism in Julia by gpderetta on Wednesday July 24, 2019 @09:13AM (#20514880)
You are obviously correct and I'm not sure why you are being downvoted.
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