George Hotz | Programming | tinygrad: RDNA3 assembly (for real) | ASMR | Positive stream :) | Part 2

Date of stream 6 May 2023. from $1499 buy https://comma.ai/shop/comma-three Live-stream chat added as Subtitles/CC - English (Twitch Chat) - three-dot menu icon - Show transcript Source files: - https://github.com/geohot/tinygrad Follow for notifications: - https://twitch.tv/georgehotz Support George: - https://twitch.tv/subs/georgehotz Chapters: 00:00:00 intro 00:00:15 RDNA3 instruction set architecture stream 00:00:30 absolute joy to work with AMD open source drivers 00:00:40 less then half time they crash, time machine 00:01:45 RDNA3 assembly syntax highlighters 00:02:28 pathlib, quiet pc 00:04:45 running shaders 00:05:55 assembly highlighting 00:07:15 v_dual_mov_b32 00:08:30 s_sendmsg 00:10:10 amd driver is lovely, works 95% of the time 00:12:00 power_dpm_force_performance_level 00:12:50 rocm sniffer segmentation fault 00:14:05 big font 00:14:20 what is sniffer doing 00:16:05 gpu doorbells 00:18:30 we are going to write our own simple driver 00:21:20 assembly language for RDNA3 runtime io controls 00:22:20 sigemptyset 00:25:40 sigsegv handler inside python 00:26:50 operating between a level kernel and userspace, doorbell 00:28:50 sigaction threads 00:32:25 killed by SIGSEGV 00:32:50 mojo source code 00:33:25 sa.sa_flags = SA_SIGINFO 00:36:42 rt_sigaction sa_restorer 00:37:15 sigemptyset 00:38:49 sigaction(SIGSEGV, &sa, NULL) 00:39:38 sigaction isn't being caught 00:41:10 rt_sigprocmask 00:41:37 example sigprocmask 00:43:00 Alex 00:43:30 sigprocmask example 00:45:10 Alex bringing ramen 00:46:25 removing LOG_LEVEL=5 00:47:00 Alex, chair 00:49:45 queue_type 1, dma queue 00:50:00 spindrift, tortellini, grateful for ramen 00:50:52 positive upbeat, negative stream before, advent of scala part 1 00:51:20 thank you ptim for gifting 10 subs 00:51:40 KFD_IOC_QUEUE_TYPE_SDMA 00:52:15 JacobsM1 gifted 5 subs 00:53:10 HSA Async Copy staged 00:54:10 DMACopy 00:54:25 Alex and George working on GPUs 00:55:00 Alex feeling GPU energy around George all the time 00:56:00 cobracob