zingaburga

ARM’s Scalable Vector Extensions: A Critical Look at SVE2 For Integer Workloads

Scalable Vector Extensions (SVE) is ARM’s latest SIMD extension to their instruction set, which was announced back in 2016. A follow-up SVE2 extension was announced in 2019, designed to incorporate all functionality from ARM’s current primary SIMD extension, NEON (aka ASIMD).

Despite being announced 5 years ago, there is currently no generally available CPU which supports any form of SVE (which excludes the [Fugaku supercomputer](https://www.fujitsu.com/global/about/innovation/

yohhoy

AV1 coding scheme

• Arithmetic coding
  • multi-symbols (up to 16 values)
  • Coefficients coding: lv_map
  • CDF: Cumulative distribution function
    • CDF update (at the end of frame)
    • CDF update (adaptive per symbol)
• Image blocking

chisui

# vim:ft=zsh ts=2 sw=2 sts=2
#
# agnoster's Theme - https://gist.github.com/3712874
# A Powerline-inspired theme for ZSH
#
# # README
#
# In order for this theme to render correctly, you will need a
# [Powerline-patched font](https://github.com/Lokaltog/powerline-fonts).
# Make sure you have a recent version: the code points that Powerline

spheenik

diff --git audio/audio.c audio/audio.c
index 6eccdb17ee..4eb190a18f 100644
--- audio/audio.c
+++ audio/audio.c
@@ -2097,3 +2097,8 @@ void AUD_set_volume_in (SWVoiceIn *sw, int mute, uint8_t lvol, uint8_t rvol)
         }
     }
 }
+
+int64_t audio_get_timer_ticks(void)

CMCDragonkai

Understanding the Memory Layout of Linux Executables

Required tools for playing around with memory:

• hexdump
• objdump
• readelf
• xxd
• gcore

ArseniyShestakov

Check it's working

DRI_PRIME=1 glxinfo | grep OpenGL

Unbind AMD GPU from Radeon driver

echo "1002 6719" > /sys/bus/pci/drivers/vfio-pci/new_id echo "0000:01:00.0" > /sys/bus/pci/devices/0000:01:00.0/driver/unbind echo "0000:01:00.0" > /sys/bus/pci/drivers/vfio-pci/bind echo "1002 6719" > /sys/bus/pci/drivers/vfio-pci/remove_id echo "1002 aa80" > /sys/bus/pci/drivers/vfio-pci/new_id echo "0000:01:00.1" > /sys/bus/pci/devices/0000:01:00.1/driver/unbind

ayosec

Benchmarks on different Map implementations for uint keys

Environment:

$ rustc --version
rustc 0.13.0-nightly (770378a31 2014-11-20 23:02:01 +0000)
$ uname -sm
Linux x86_64

No optimizations. No debug info

aginor

--- a/common/lib/modules/fglrx/build_mod/firegl_public.c	2014-11-29 09:02:10.000000000 +1300
+++ b/common/lib/modules/fglrx/build_mod/firegl_public.c	2015-04-18 22:31:06.673656387 +1200
@@ -4816,8 +4816,13 @@
 {
     unsigned long orig_level;
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,19,0)
     orig_level = __get_cpu_var(kasExecutionLevel);
     __get_cpu_var(kasExecutionLevel) = level;
+#else

guillermo

#!/bin/bash

# This is a unix wrapper around the erlang vm. It provides the following functionality:
#
# * Spawns in foreground
# * Handle SIGHUP and call RELOADFUNC
# * Handle SIGTERM SIGQUIT and SIGINT telling to the vm to quit
# * Dies if the vm dies (for example kernel killing because out of memory)
#
# Forks and improvements are welcome.

mikesmullin

Mike's x86-64 Assembly (ASM) Notes

Assembling Binary Machine Code

Operating Modes:

These determine the assumed/default size of instruction operands, and restricts which opcodes are available, and how they are used.

Modern operating systems, booted inside Real mode,