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See, just explaining someone else works! 08:25:45 now to see if it's faster than LOGCOUNT 08:27:50 echo-area [~user@114.251.86.0] has joined #sbcl 08:28:39 not by much 08:28:52 Sounds like nanooptimizing ... 08:29:58 actually, with safety 0 it's twice as fast 08:31:19 Ok ... and how often is it used, and where? (That's not sarcastic, I honestly don't know) 08:31:22 though, i think for the case where you'd need a fast logcount (like counting in a bit-array) some other SSE instruction should be faster 08:37:05 and sbcl doesn't have something like -march=specific-arch 08:41:53 but it does compile "live", and the images are non-portable anyway, aren't they? 08:43:28 they are 08:43:44 woudshoo [~user@ironhead.xs4all.nl] has joined #sbcl 08:45:05 then they'll have to have some arch-detection and recompile anyway? How does it cope if I want to use an amd64 image on i386? 08:45:34 it fails 08:45:49 i mean that it's portable across an arch 08:46:00 so they're non-portable, at least in such extreme cases 08:46:30 well, what is an arch? i386 to sse3 has a bit of differences ... 08:46:31 that's why there's no SSE2 for floats on x86 08:46:58 ugh .... 08:47:03 tcr [~tcr@217-162-207-164.dynamic.hispeed.ch] has joined #sbcl 08:47:47 *flip214* thinks that should be changed, by using (declare (speed 4) (portability 0)) or something like that ... 08:48:12 or (target-arch native) 08:48:18 or (target-arch i486) 08:51:06 yes, that would be nice ... especially for bit-array, they could get some boost from sse2+3 and similar ... 08:51:58 I'd like to see SBCL use graphic cards for highly parallel tasks, too 08:52:44 it's hard to decide automatically when it's worth it 08:53:35 *stassats* thinks about trying to add AES instructions 08:54:01 it doesn't have to be automatical ... I'm happy to say "do these computations as parallel as possible", and that might mean "use an FPGA", too 08:54:15 there's cl-gpu 08:54:39 i don't really know what does it do 08:54:41 nice, thanks ... 08:55:44 but there's no documentation, AFACS 08:56:28 yeah, that's why couldn't enlighten myself to what it does 08:57:23 https://github.com/angavrilov/cl-gpu/wiki 09:15:26 -!- stassats [~stassats@wikipedia/stassats] has quit [Ping timeout: 240 seconds] 10:07:31 -!- tr3x [~tr3x@93-141-6-183.adsl.net.t-com.hr] has quit [Excess Flood] 10:09:01 tr3x [~tr3x@93-141-6-183.adsl.net.t-com.hr] has joined #sbcl 10:10:23 hargettp [~hargettp@pool-71-174-128-236.bstnma.east.verizon.net] has joined #sbcl 10:13:52 -!- luis` is now known as luis 10:27:07 -!- lnostdal [~Lars@213.80-202-59.nextgentel.com] has quit [Ping timeout: 248 seconds] 10:28:05 lnostdal [~Lars@213.80-202-59.nextgentel.com] has joined #sbcl 10:32:46 -!- hargettp [~hargettp@pool-71-174-128-236.bstnma.east.verizon.net] has quit [Quit: 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