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Just to make sure, did you start Julia with multithreading enabled? `julia --threads=auto` should do it (or `julia -tauto` if you prefer). Without it, Julia st
by sundarurfriend 3y ago
Just to make sure, did you start Julia with multithreading enabled? `julia --threads=auto` should do it (or `julia -tauto` if you prefer).
Without it, Julia starts single threaded, which means the code does all this work to enable multithreading and then doesn't get to benefit from it.
- bjourne 3y agoI did. Running with threads improves performance by 50%, but is still nowhere near C performance. My machine only has two cores so threading doesn't help much.
- sundarurfriend 3y agoThat's interesting. It makes sense that a two core machine doesn't benefit too much from multithreading, but "nowhere near C performance" is pretty surprising. I'll try out both the programs around this weekend on my own fairly anaemic machine, and see how they fair for me. Thanks for responding!
- bjourne 3y agoCool. If Julia runs much faster for you than for me I'd be interested in hearing it. I was honestly surprised the performance was so bad so perhaps I did something wrong.