#panfrost on 2021-07-01 — irc logs at oftc.irclog.whitequark.org

2021-06-22 12:29 ChanServ changed the topic of #panfrost to: Panfrost - FLOSS Mali Midgard & Bifrost - Logs https://oftc.irclog.whitequark.org/panfrost - <macc24> i have been here before it was popular

00:00 nlhowell has quit [Ping timeout: 480 seconds]

00:01 wwilly has quit [Read error: Connection reset by peer]

00:01 wwilly has joined #panfrost

01:00 atler is now known as Guest1057

01:00 atler has joined #panfrost

01:07 Guest1057 has quit [Ping timeout: 480 seconds]

01:29 vstehle has quit [Ping timeout: 480 seconds]

03:02 davidlt_ has joined #panfrost

03:11 <cyrozap> alyssa: You think loading immediates on Valhall is bad? Try PPC64, where you may need up to _5_ instructions to load a 64-bit constant to a register, depending on the value. Now, supposedly, the CPU can fuse some of those instructions, but that still results in at most 3 operations to load a 64-bit constant. And while you can do PC-relative loads, those are more complicated to implement in a JIT (since

03:11 <cyrozap> you'd have to do it per-block) and will result in memory access (I think--which I assume will slow things down).

03:12 Danct12 has quit [Quit: Quitting]

03:13 Danct12 has joined #panfrost

03:18 <cyrozap> Meanwhile, x86-64 can do it in a single instruction.

03:21 <HdkR> AArch64 in worst case is 4 instructions for 64-bit constant as well. Which fuses in to two ops as well :D

03:22 <HdkR> Both arches of course have ways to generate fun immediates in less instructions

03:28 <HdkR> Everyone just needs to do the Nvidia thing right. Steal a full UBO for constants, allow loading a single 64bit value in one instruction ;)

04:12 davidlt_ has quit [Ping timeout: 480 seconds]

05:00 vstehle has joined #panfrost

05:52 vstehle has quit [singleton.oftc.net synthon.oftc.net]

05:52 robertfoss has quit [singleton.oftc.net synthon.oftc.net]

05:52 jschwart has quit [singleton.oftc.net synthon.oftc.net]

05:52 stan has quit [singleton.oftc.net synthon.oftc.net]

05:52 ndufresne has quit [singleton.oftc.net synthon.oftc.net]

05:52 icecream95 has quit [singleton.oftc.net synthon.oftc.net]

05:52 Dylanger has quit [singleton.oftc.net synthon.oftc.net]

05:52 ckeepax has quit [singleton.oftc.net synthon.oftc.net]

05:52 toggleton[m] has quit [singleton.oftc.net synthon.oftc.net]

05:52 fahien2 has quit [singleton.oftc.net synthon.oftc.net]

05:52 pjakobsson has quit [singleton.oftc.net synthon.oftc.net]

05:52 HdkR has quit [singleton.oftc.net synthon.oftc.net]

05:52 wwilly has quit [singleton.oftc.net synthon.oftc.net]

05:52 megi has quit [singleton.oftc.net synthon.oftc.net]

05:52 macc24 has quit [singleton.oftc.net synthon.oftc.net]

05:52 jernej has quit [singleton.oftc.net synthon.oftc.net]

05:52 tomeu7 has quit [singleton.oftc.net synthon.oftc.net]

05:52 hl` has quit [singleton.oftc.net synthon.oftc.net]

05:52 urja has quit [singleton.oftc.net synthon.oftc.net]

05:52 CounterPillow has quit [singleton.oftc.net synthon.oftc.net]

05:52 psydroid has quit [singleton.oftc.net synthon.oftc.net]

05:52 sigmaris has quit [singleton.oftc.net synthon.oftc.net]

05:52 nroberts has quit [singleton.oftc.net synthon.oftc.net]

05:52 rellla has quit [singleton.oftc.net synthon.oftc.net]

05:52 strongtz[m] has quit [singleton.oftc.net synthon.oftc.net]

05:52 stebler[m] has quit [singleton.oftc.net synthon.oftc.net]

05:52 akanouras has quit [singleton.oftc.net synthon.oftc.net]

05:52 dhewg has quit [singleton.oftc.net synthon.oftc.net]

05:52 cwabbott has quit [singleton.oftc.net synthon.oftc.net]

05:52 mmind00 has quit [singleton.oftc.net synthon.oftc.net]

05:52 narmstrong has quit [singleton.oftc.net synthon.oftc.net]

05:52 atler has quit [singleton.oftc.net synthon.oftc.net]

05:52 robmur01 has quit [singleton.oftc.net synthon.oftc.net]

05:52 floof58 has quit [singleton.oftc.net synthon.oftc.net]

05:52 aquijoule_ has quit [singleton.oftc.net synthon.oftc.net]

05:52 stepri01 has quit [singleton.oftc.net synthon.oftc.net]

05:52 karolherbst has quit [singleton.oftc.net synthon.oftc.net]

05:52 wolfshappen_ has quit [singleton.oftc.net synthon.oftc.net]

05:52 pendingchaos has quit [singleton.oftc.net synthon.oftc.net]

05:52 gcl has quit [singleton.oftc.net synthon.oftc.net]

05:52 jkl has quit [singleton.oftc.net synthon.oftc.net]

05:52 jambalaya has quit [singleton.oftc.net synthon.oftc.net]

05:52 warpme_ has quit [singleton.oftc.net synthon.oftc.net]

05:52 tlwoerner has quit [singleton.oftc.net synthon.oftc.net]

05:52 bbrezillon has quit [singleton.oftc.net synthon.oftc.net]

05:52 anarsoul has quit [singleton.oftc.net synthon.oftc.net]

05:52 SolidHal has quit [singleton.oftc.net synthon.oftc.net]

05:52 tchebb has quit [singleton.oftc.net synthon.oftc.net]

05:52 thecycoone has quit [singleton.oftc.net synthon.oftc.net]

05:52 br has quit [singleton.oftc.net synthon.oftc.net]

05:52 anholt has quit [singleton.oftc.net synthon.oftc.net]

05:52 hanetzer has quit [singleton.oftc.net synthon.oftc.net]

05:52 wicast has quit [singleton.oftc.net synthon.oftc.net]

05:52 krh has quit [singleton.oftc.net synthon.oftc.net]

05:52 dschuermann has quit [singleton.oftc.net synthon.oftc.net]

05:52 cyrozap has quit [singleton.oftc.net synthon.oftc.net]

05:52 daniels has quit [singleton.oftc.net synthon.oftc.net]

05:52 rcf has quit [singleton.oftc.net synthon.oftc.net]

05:52 Miyu-saki has quit [singleton.oftc.net synthon.oftc.net]

05:52 mixfix41 has quit [singleton.oftc.net synthon.oftc.net]

05:52 alyssa has quit [singleton.oftc.net synthon.oftc.net]

05:52 cphealy has quit [singleton.oftc.net synthon.oftc.net]

05:52 Stary_ has quit [singleton.oftc.net synthon.oftc.net]

05:52 jolan has quit [singleton.oftc.net synthon.oftc.net]

05:52 Lyude has quit [singleton.oftc.net synthon.oftc.net]

05:52 austriancoder has quit [singleton.oftc.net synthon.oftc.net]

05:52 suihkulokki has quit [singleton.oftc.net synthon.oftc.net]

05:52 sphalerite has quit [singleton.oftc.net synthon.oftc.net]

05:52 jstultz has quit [singleton.oftc.net synthon.oftc.net]

05:52 ids1024 has quit [singleton.oftc.net synthon.oftc.net]

05:52 robclark has quit [singleton.oftc.net synthon.oftc.net]

05:52 rtp has quit [singleton.oftc.net synthon.oftc.net]

05:52 taowa has quit [singleton.oftc.net synthon.oftc.net]

05:52 Net147 has quit [singleton.oftc.net synthon.oftc.net]

05:52 robher has quit [singleton.oftc.net synthon.oftc.net]

05:52 robink has quit [singleton.oftc.net synthon.oftc.net]

05:52 ezequielg has quit [singleton.oftc.net synthon.oftc.net]

05:53 robink has joined #panfrost

05:53 robher has joined #panfrost

05:53 suihkulokki has joined #panfrost

05:53 ezequielg has joined #panfrost

05:53 austriancoder has joined #panfrost

05:53 Stary_ has joined #panfrost

05:53 Lyude has joined #panfrost

05:53 jolan has joined #panfrost

05:53 cphealy has joined #panfrost

05:53 davidlt_ has joined #panfrost

05:53 alyssa has joined #panfrost

05:53 mixfix41 has joined #panfrost

05:53 vstehle has joined #panfrost

05:53 atler has joined #panfrost

05:53 jkl has joined #panfrost

05:53 wwilly has joined #panfrost

05:53 robertfoss has joined #panfrost

05:53 megi has joined #panfrost

05:53 thecycoone has joined #panfrost

05:53 robmur01 has joined #panfrost

05:53 jambalaya has joined #panfrost

05:53 jschwart has joined #panfrost

05:53 macc24 has joined #panfrost

05:53 warpme_ has joined #panfrost

05:53 floof58 has joined #panfrost

05:53 stan has joined #panfrost

05:53 br has joined #panfrost

05:53 tlwoerner has joined #panfrost

05:53 aquijoule_ has joined #panfrost

05:53 jernej has joined #panfrost

05:53 anholt has joined #panfrost

05:53 hanetzer has joined #panfrost

05:53 stepri01 has joined #panfrost

05:53 karolherbst has joined #panfrost

05:53 wolfshappen_ has joined #panfrost

05:53 ndufresne has joined #panfrost

05:53 tomeu7 has joined #panfrost

05:53 toggleton[m] has joined #panfrost

05:53 icecream95 has joined #panfrost

05:53 Dylanger has joined #panfrost

05:53 ckeepax has joined #panfrost

05:53 HdkR has joined #panfrost

05:53 pjakobsson has joined #panfrost

05:53 fahien2 has joined #panfrost

05:53 urja has joined #panfrost

05:53 hl` has joined #panfrost

05:53 psydroid has joined #panfrost

05:53 CounterPillow has joined #panfrost

05:53 pendingchaos has joined #panfrost

05:53 gcl has joined #panfrost

05:53 bbrezillon has joined #panfrost

05:53 mmind00 has joined #panfrost

05:53 sigmaris has joined #panfrost

05:53 nroberts has joined #panfrost

05:53 akanouras has joined #panfrost

05:53 dhewg has joined #panfrost

05:53 strongtz[m] has joined #panfrost

05:53 stebler[m] has joined #panfrost

05:53 rellla has joined #panfrost

05:53 cwabbott has joined #panfrost

05:53 narmstrong has joined #panfrost

05:53 anarsoul has joined #panfrost

05:53 Net147 has joined #panfrost

05:53 SolidHal has joined #panfrost

05:53 tchebb has joined #panfrost

05:53 wicast has joined #panfrost

05:53 sphalerite has joined #panfrost

05:53 krh has joined #panfrost

05:53 rcf has joined #panfrost

05:53 Miyu-saki has joined #panfrost

05:53 jstultz has joined #panfrost

05:53 ids1024 has joined #panfrost

05:53 dschuermann has joined #panfrost

05:53 cyrozap has joined #panfrost

05:53 rtp has joined #panfrost

05:53 robclark has joined #panfrost

05:53 taowa has joined #panfrost

05:53 daniels has joined #panfrost

06:49 <bbrezillon> macc24: nope, not yet. I mean, you're free to test it and report bugs, but depending on the issue, it might take a while to get fixed

07:02 camus1 has joined #panfrost

07:08 camus has quit [Ping timeout: 480 seconds]

07:17 alpernebbi has joined #panfrost

08:02 nlhowell has joined #panfrost

08:24 rasterman has joined #panfrost

09:24 <dschuermann> alyssa: did you make any progress on the approach to not scalarize 16bit instructions in the first place? to vectorize https://gitlab.freedesktop.org/mesa/mesa/-/issues/5002 this would be most straight-forward

09:25 <dschuermann> the aggressive vectorization might also work, but would create vec2(phi, phi)

09:40 psydroid has quit [Quit: Bridge terminating on SIGTERM]

09:40 toggleton[m] has quit []

09:40 stebler[m] has quit []

09:40 icecream95 has quit [Quit: Bridge terminating on SIGTERM]

09:40 strongtz[m] has quit []

09:40 Dylanger has quit [Quit: Bridge terminating on SIGTERM]

09:40 akanouras has quit [Quit: Bridge terminating on SIGTERM]

09:46 cphealy has quit [Ping timeout: 480 seconds]

09:51 akanouras has joined #panfrost

09:51 akanouras is now known as Guest1117

09:55 cphealy has joined #panfrost

10:27 camus has joined #panfrost

10:29 wwilly has quit [Ping timeout: 480 seconds]

10:33 camus1 has quit [Ping timeout: 480 seconds]

10:39 wwilly has joined #panfrost

11:30 wwilly_ has joined #panfrost

11:37 wwilly has quit [Ping timeout: 480 seconds]

12:11 Dylanger has joined #panfrost

12:11 icecream95[m] has joined #panfrost

12:11 psydroid has joined #panfrost

12:11 stebler[m] has joined #panfrost

12:11 strongtz[m] has joined #panfrost

12:11 toggleton[m] has joined #panfrost

12:12 tomeu7 has quit []

12:12 tomeu has joined #panfrost

12:12 wwilly__ has joined #panfrost

12:20 wwilly_ has quit [Ping timeout: 480 seconds]

12:33 urja has quit [Remote host closed the connection]

12:33 urja has joined #panfrost

12:41 tomeu has quit [Quit: The Lounge - https://thelounge.chat]

12:41 tomeu has joined #panfrost

12:45 tomeu has quit []

12:45 tomeu has joined #panfrost

12:47 Guest1117 has quit []

13:09 alpernebbi has quit [Quit: alpernebbi]

13:14 <alyssa> dschuermann: I've been doing r/e stuff (rather than driver) lately

13:15 <alyssa> > I somehow doubt that these optimizations have some real-world benefit, though. Looks like just flexing with numbers.

13:15 <alyssa> I mean ... I can confirm opt_vectorize on main doesn't perform well on real shaders for packed fp16 hw

13:16 <alyssa> The aggressive vectorization patches can make a /big/ difference here which tells me there's a lot of room

13:32 camus1 has joined #panfrost

13:36 camus has quit [Ping timeout: 480 seconds]

13:58 camus has joined #panfrost

14:01 camus1 has quit [Read error: Connection reset by peer]

14:42 icecream95[m] has quit []

17:39 camus1 has joined #panfrost

17:41 camus has quit [Read error: Connection reset by peer]

17:43 alpernebbi has joined #panfrost

17:57 jernej_ has joined #panfrost

17:57 jernej has quit [Remote host closed the connection]

18:26 jernej_ is now known as jernej

18:42 rasterman has quit [Quit: Gettin' stinky!]

18:54 camus has joined #panfrost

18:54 camus1 has quit [Read error: Connection reset by peer]

19:14 rasterman has joined #panfrost

19:28 davidlt_ has quit [Ping timeout: 480 seconds]

20:51 icecream95[m] has joined #panfrost

20:53 icecream95[m] is now known as icecream95

20:54 <icecream95> Happy new year everyone!

20:55 <macc24> wait what

20:56 <HdkR> Happy birth year

20:57 <HdkR> One fresh new year born this day

20:57 <macc24> ???

20:59 <icecream95> (I think it's tomorrow for all of you in inferior time zones)

21:00 <macc24> ??????????

21:20 <icecream95> You mean that the year doesn't start at this time for everyone?

21:21 <macc24> hapy new year

21:23 alpernebbi has quit [Quit: alpernebbi]

22:32 camus1 has joined #panfrost

22:34 camus has quit [Read error: Connection reset by peer]

22:43 Danct12 has quit [Quit: Quitting]

22:43 Danct12 has joined #panfrost

22:44 rasterman has quit [Quit: Gettin' stinky!]

22:51 wwilly__ has quit [Ping timeout: 480 seconds]

22:54 warpme_ has quit [Quit: Connection closed for inactivity]

23:12 wwilly has joined #panfrost

23:23 nlhowell has quit [Ping timeout: 480 seconds]

23:36 camus has joined #panfrost

23:41 camus1 has quit [Ping timeout: 480 seconds]