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| disbot4 | <simon_sibl> Hii ! | 03:26 | |
| <simon_sibl> I am not sure to understand, is that normal that raku -e 'my @a = do for ^1_000_000 { .is-prime }' is faster than raku -e 'my @a = race for ^1_000_000 { .is-prime }' | |||
| <simon_sibl> I thought race would be faster since it's supposed to do parallelism ? | 03:27 | ||
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| disbot4 | <simon_sibl> (Same result using hyper) | 03:39 | |
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| disbot4 | <jubilatious1_98524> m: time raku -e 'my @a; for (^1_000_000) {@a.push: .is-prime }' | 04:15 | |
| <Raku eval> Exit code: 1 ===SORRY!=== Error while compiling /home/glot/main.raku Two terms in a row at /home/glot/main.raku:1 ------> time⏏ raku -e 'my @a; for (^1_000_000) {@a.pu expecting any of: infix infix stopper statement end statement modifier statement modifier loop | |||
| <jubilatious1_98524> m: raku -e 'my @a; for (^1_000_000) {@a.push: .is-prime }' | 04:16 | ||
| <Raku eval> Exit code: 1 ===SORRY!=== Error while compiling /home/glot/main.raku Two terms in a row at /home/glot/main.raku:1 ------> raku -e⏏ 'my @a; for (^1_000_000) {@a.push: .is- expecting any of: infix infix stopper postfix statement end statement modifier statement modifier loop | |||
| <jubilatious1_98524> m: my @a; for (^1_000_000) {@a.push: .is-prime } | 04:17 | ||
| <Raku eval> | |||
| <jubilatious1_98524> Yeah, race should be faster but isn't. | |||
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| disbot4 | <simon_sibl> m: my @a; for (^1_000_000) {@a.push: .is-prime } | 04:56 | |
| <Raku eval> | |||
| <simon_sibl> Why I can’t see any output ? XD | |||
| <simon_sibl> m: my @a; hyper for (^1_000_000) {@a.push: .is-prime } | 04:57 | ||
| <Raku eval> | |||
| <jubilatious1_98524> m: my @a; hyper for (^1_000_000) {@a.push: .is-prime }; say now -INIT now; | 05:28 | ||
| <Raku eval> 2.226502384 | |||
| <jubilatious1_98524> m: my @a; race for (^1_000_000) {@a.push: .is-prime }; say now -INIT now; | |||
| <Raku eval> 2.382826473 | |||
| <jubilatious1_98524> m: my @a; for (^1_000_000) {@a.push: .is-prime }; say now -INIT now; | |||
| <Raku eval> 0.203327596 | |||
| <jubilatious1_98524> @simon_sibl ☝️ | 05:29 | ||
| <simon_sibl> Thanks ! XD And so yeah indeed I don’t get why race and hyper are slower Race should be faster than hyper because it doesn’t keep order also but it’s the opposite | 05:45 | ||
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| disbot4 | <rcmlz> I guess the default batch size is too small | 11:10 | |
| <rcmlz> method hyper(Int(Cool) :$batch = 64, Int(Cool) :$degree = Kernel.cpu-cores - 1) | |||
| <rcmlz> Ealier (6 months ago) in this group Liz explained and gave: | 11:13 | ||
| <rcmlz> <lizmat> m: (^∞).hyper(batch => 2048).grep(*.is-prime)[500000].say; say now - INIT now | |||
| <rcmlz> You could run an experiment on batch x degree x size-of-problem to find your optimum. | 11:15 | ||
| <librasteve> time raku -e 'my @a = race (for ^10_000_000 { .is-prime })' => 12.38s | 11:19 | ||
| <librasteve> raku -e 'my @a = race batch => 2048, (for ^10_000_000 { .is-prime })' => 1.55s | |||
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| lizmat | I don't think that actually hypers | 11:23 | |
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| disbot4 | <rcmlz> How about that experimaent? glot.io/snippets/h9xwkwdb7z (there is always time for asome prokrastination ...) | 11:55 | |
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| disbot4 | <librasteve> very nice experiment… | 14:03 | |
| <rcmlz> It was fun to do this quick-fun-naive-hack. I guess for some serious analysis someone would need reach for one of the Benchmark modules in raku.land/?q=Benchmark to ensure some statistical significance by running things multiple times and enjoy at the same time automated performance result calculation. | 14:16 | ||
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