2026/04/18

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2026-04-18 12:18:10 +0000lisbeths(uid135845@id-135845.lymington.irccloud.com) lisbeths
2026-04-18 12:13:46 +0000merijn(~merijn@host-cl.cgnat-g.v4.dfn.nl) (Ping timeout: 244 seconds)
2026-04-18 12:09:47 +0000m(~travltux@user/travltux) travltux
2026-04-18 12:09:20 +0000merijn(~merijn@host-cl.cgnat-g.v4.dfn.nl) merijn
2026-04-18 12:07:03 +0000misterfish(~misterfis@84.53.85.146) misterfish
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2026-04-18 12:06:15 +0000m(~travltux@user/travltux) (Quit: WeeChat 4.7.2)
2026-04-18 12:01:41 +0000uli-fem(~uli-fem@14-202-246-84.tpgi.com.au)
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2026-04-18 11:58:29 +0000vgtw(~vgtw@user/vgtw) (Ping timeout: 252 seconds)
2026-04-18 11:57:35 +0000 <Milan_Vanca> gentauro: And what do you mean by "except the PlayStation 3 cell processor"?
2026-04-18 11:57:35 +0000vgtw_(~vgtw@user/vgtw) vgtw
2026-04-18 11:53:57 +0000merijn(~merijn@host-cl.cgnat-g.v4.dfn.nl) merijn
2026-04-18 11:53:31 +0000 <Milan_Vanca> Or do they?
2026-04-18 11:53:16 +0000 <Milan_Vanca> gentauro: I get that there is branch-prediction and choosing wrong branch slows execution down. However other processes don't "poision" branch prediction for other processes right?
2026-04-18 11:52:55 +0000m(~travltux@user/travltux) travltux
2026-04-18 11:51:58 +0000 <Milan_Vanca> jreicher: I am using from Control.Parallel.Strategies, rseq, parList..
2026-04-18 11:51:17 +0000m(~travltux@user/travltux) (Quit: WeeChat 4.7.2)
2026-04-18 11:47:57 +0000gentaurothis is a longer story and not really related to Haskell as you say
2026-04-18 11:47:41 +0000 <gentauro> Milan_Vanca: from uni days, CPU's aren't all what you expect (except the PlayStation 3 cell processor). Most parts of CPU are used by branch-prediction
2026-04-18 11:47:01 +0000uli-fem(~uli-fem@14-202-246-84.tpgi.com.au) (Ping timeout: 272 seconds)
2026-04-18 11:46:57 +0000 <jreicher> Milan_Vanca: did you add any locking or resource contention to introduce the parallelisation?
2026-04-18 11:42:51 +0000merijn(~merijn@host-cl.cgnat-g.v4.dfn.nl) (Ping timeout: 246 seconds)
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2026-04-18 11:39:43 +0000tremon(~tremon@83.80.159.219) (Quit: getting boxed in)
2026-04-18 11:38:39 +0000merijn(~merijn@host-cl.cgnat-g.v4.dfn.nl) merijn
2026-04-18 11:37:37 +0000hsw(~hsw@106.104.103.195) hsw
2026-04-18 11:27:26 +0000pavonia(~user@user/siracusa) (Quit: Bye!)
2026-04-18 11:27:19 +0000merijn(~merijn@host-cl.cgnat-g.v4.dfn.nl) (Ping timeout: 264 seconds)
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2026-04-18 11:25:56 +0000xff0x(~xff0x@2405:6580:b080:900:b92c:2467:1a30:4f61)
2026-04-18 11:23:57 +0000xff0x(~xff0x@2405:6580:b080:900:73ce:e440:32fb:1d76) (Ping timeout: 246 seconds)
2026-04-18 11:21:49 +0000uli-fem(~uli-fem@14-202-246-84.tpgi.com.au)
2026-04-18 11:20:33 +0000 <Milan_Vanca> I would expect still 2x speedup so when CPU is busy par should be 1s. But it is not... interesting
2026-04-18 11:20:29 +0000merijn(~merijn@host-cl.cgnat-g.v4.dfn.nl) merijn
2026-04-18 11:19:39 +0000 <Milan_Vanca> I have found yet another interesting fact same CPU idle, seq = 0.6s, par = 0.3s, CPU busy seq = 2s, par= 4,3s
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2026-04-18 10:55:44 +0000puke(~puke@user/puke) puke
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