egg|nomz|egg changed the topic of #kspacademia to: https://gist.github.com/pdn4kd/164b9b85435d87afbec0c3a7e69d3e6d | Dogs are cats. Spiders are cat interferometers. | Космизм сегодня! | Document well, for tomorrow you may get mauled by a ネコバス. | <UmbralRaptor> egg|nomz|egg: generally if your eyes are dewing over, that's not the weather. | <ferram4> I shall beat my problems to death with an engineer.
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<UmbralRaptor> ;choose Hubble constant|null hypothesis
<kmath> UmbralRaptor: null hypothesis
<UmbralRaptor> !choose Hubble constant|null hypothesis
<Qboid> UmbralRaptor: Your options are: Hubble constant, null hypothesis. My choice: null hypothesis
<egg> UmbralRaptor: Sarbian: ground tracks! https://i.imgur.com/WDCTwf8.png
<egg> (nothing new here, but it's been a while since I played principia with RSS/RO :-p)
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<UmbralRaptor> Diode bot becomes self aware: https://twitter.com/diodebot/status/962662210953728000
<kmath> <diodebot> ridiculous diode (RD)
<egg> Sarbian: oh this shows the thing we discussed with the craft not following its trajectory https://imgur.com/a/f6Iv3
<egg> Sarbian: Principia solves it since 2014! :D
<egg> !seen awang
<Qboid> egg: I last saw awang on [11.02.2018 15:38:30] in #RO saying: "I don't see any changes that would have anything to do with that"
<awang> What did I do?
<egg> awang: nothing
<egg> awang: do you want to test cohen on linux & mac
<awang> egg: I can test on mac, not on linux
<egg> hm
<egg> can someone test on linux
* egg pokes bofh with a stick
<egg> awang: 1.2.2: goo.gl/2eAK1W, 1.3.1: goo.gl/XXjJ6u
<awang> egg: I can get 1.3.1, idk about 1.2.2
<awang> Anything in particular to look out for?
<egg> not really tbh
* UmbralRaptor 🔪 http://adsabs.harvard.edu/abs/2017MNRAS.472.1736R in their not including CSVs of their tabular data.
<armed_troop> egg: is something acting up?
<egg> armed_troop: ?
<armed_troop> I see queries about testing but I'm missing the context :P
<egg> armed_troop: eh, just preparing for the cohen release
<armed_troop> ahhhh, ok
<egg> armed_troop: linux binary got a fair bit bloated because I forgot to ifdef something out on *nix, but other than that I don't think there are any real issue
<egg> s/$/s
<Qboid> egg meant to say: armed_troop: linux binary got a fair bit bloated because I forgot to ifdef something out on *nix, but other than that I don't think there are any real issues
<armed_troop> hmmmm, can just rebuild it without the bloat? or is that too much effort?
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<egg> armed_troop: that would entail retagging, redoing the profile-guided optimization thing, etc.
<egg> too much work, don't care
<egg> armed_troop: it'll go away the following moon anyway :-p
<kmath> <KatBarger> We are still accepting applications from graduate students, even though we are passed the deadline. We hope to get… https://t.co/NrQZjuUem4
<egg> !wpn bofh
* Qboid gives bofh a ytterbium duck which strongly resembles a circle
<egg> !wpn whitequark
* Qboid gives whitequark a ventral trampoline ordinal
<bofh> !wpn egg
* Qboid gives egg a cranky octagon
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<egg> bofh: do you want to test cohen on linux?
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* UmbralRaptor wonders if MNRAS is just bad about making published data easy to use.
* UmbralRaptor 🔪 things, and wonders if no one has done an all sky stellar parameter catalog from DSS, IRAS, 2MASS, etc.
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<UmbralRaptor> Hrm. Anything hotter than 2400 K would be in the Rayleigh Jeans tail for J-band…
* UmbralRaptor pokes the RAVE catalog with a VizieR.
<egg> bofh: phl's algorithm for the number of ice cubes to put in the shaker: take the number of people, add one, and take the number of regions of the plane separated by that number of lines in general position
<egg> UmbralRaptor: hm, is cohen the dog release?
<bofh> egg: seems reasonable, tbh.
<egg> bofh: cohen is going to be the first release which falls on a new year
<UmbralRaptor> egg: dog?
<egg> UmbralRaptor: ^
<egg> UmbralRaptor: new moon, so sometimes it falls on the new year of a lunisolar calendar :-p
<UmbralRaptor> Ah, *that* dog.
<UmbralRaptor> NASA budget proposal leaks: same shenanigans as last year: https://www.nytimes.com/2018/02/11/science/nasa-budget-moon.html
<bofh> egg: nice :P
<armed_troop> also --force-metal results in no flicker and probably better performance
<armed_troop> oops wrong chat :D
<bofh> https://twitter.com/thehill/status/962791619178180609 Poe's Law in action, I legit can't tell if this is a joke or not. I *think* it's a joke, but you never know...
<kmath> <thehill> #BREAKING: Trump considering privatizing International Space Station, turning it into real estate venture: report… https://t.co/F2fJLiU4s6
<egg> bofh: UmbralRaptor: So the january 2023 release of principia will be a kitty
<egg> (well, a viet kitty, or a chinese rabbit)
<UmbralRaptor> Kitty! \o/
<egg> !acr -add:IACA Intel® Architecture Code Analyzer
<Qboid> egg: I added the explanation for this acronym.
<egg> bofh: so we ran IACA on our Estrin and Horner implementations
<egg> (with arch haswell even though we are on sandies because that's as old as IACA 3 will go)
<egg> bofh: it's 3d vectors, and "intrinsics" means we wrote the vector ops with SSE2 vector intrinsics (otherwise MSVC is nonvectorizing)
<bofh> I am absolutely unsurprised there's negative benefit for the degree 4 case (also use unaligned loads if stuff is crashing!).
<egg> bofh: no it's not that it crashes, it's that IACA crashes
<egg> bofh: and the benefit is positive, albeit smol
<egg> bofh: also phl might have swapped some numbers
<egg> bofh: fixed
<egg> bofh: IACA crashes and in the process shows that it's written in go of all things >_>
<bofh> wait, *IACA* crashes? lmfao.
<egg> bofh: :D
<egg> bofh: also phl is now having fun optimizing 3d != and ==
<egg> bofh: and you appear to be an auroch
<egg> does that mean you can be observed with the ANBOscope
<bofh> 3d != and == are prolly most optimized down to a single cmpps
<bofh> also, wait, when did I become an auroch?
<egg> bofh: well there's an anonymous auroch on the google sheet
<egg> so I guess that's you
<egg> bofh: and nah, they're not optimized much by MSVC apparently
<bofh> I mean by hand :p
<egg> bofh: phl went with _mm_movemask_pd (and then eventually a bitant and a cmp)
<egg> bitand even
<bofh> oh right, I kerp forgetting you're working with doubles
* egg slaps bofh with a double trout
<egg> bofh: ah so there's the failure mode where IACA crashes and starts talking about goroutines, but there's also the one where it starts looping forever (it does that on the unoptimized Dot) :-p
<bofh> rofl
<bofh> incredible.
<bofh> I would honestly just benchmark those routines using RDTSC & a loop tbh.
<egg> bofh: well we have benchmarks for the polynomials
<egg> bofh: but since we're poking at intrinsics it seems fun to tinker with IACA
<bofh> IACA doesn't seem like much fun tbh :P
<egg> bofh: dunno, it makes shiny ASCII art
<bofh> so does toilet(1) :P
<egg> bofh: unrelated, principia ground tracks are pretty https://i.imgur.com/WDCTwf8.png
<kmath> <stephentyrone> @johnregehr I have tried all our pets’ foods. May explain things.
<bofh> Nice.
<UmbralRaptor> egg: See, they *are* cats!