Abelardo Jara-Berrocal abelardojarab

High-Performance Matrix Multiplication

This is a short post that explains how to write a high-performance matrix multiplication program on modern processors. In this tutorial I will use a single core of the Skylake-client CPU with AVX2, but the principles in this post also apply to other processors with different instruction sets (such as AVX512).

Intro

Matrix multiplication is a mathematical operation that defines the product of

code-gnu-global
copilot-vscode
CppSnippets
cpptools
csharpfixformat
docker-linter
dot
final-newline
flask-snippets

Sometimes you need to use API Keys to use things like the Speech API. And then you Google a bit and follow all the instructions. But the Chromium Project's API Keys page does a not-so-great of explaining how to do this, so I will.

Download Chromium.
You'll notice a yellow disclaimer message appear as a doorhanger: Google API Keys are missing. Some functionality of Chromium will be disabled. Learn More.
Clicking on that link takes you to the confusing API Keys docs page.
If you aren't already, subscribe to the [email protected] mailing list. (You can just subscribe to the list and choose to not receive any mail. FYI: the Chromium project restricts the APIs to those subscribed to that group - that is, Chromium devs.)
Make sur

	# Kernel sysctl configuration file for Linux
	#
	# Version 1.14 - 2019-04-05
	# Michiel Klaver - IT Professional
	# http://klaver.it/linux/ for the latest version - http://klaver.it/bsd/ for a BSD variant
	#
	# This file should be saved as /etc/sysctl.conf and can be activated using the command:
	# sysctl -e -p /etc/sysctl.conf
	#
	# For binary values, 0 is disabled, 1 is enabled. See sysctl(8) and sysctl.conf(5) for more details.

	SERVER=jaraberrocal.readmyblog.org
	PORT=2443
	CERTIFICATE=/etc/gitlab-runner/certs/${SERVER}.crt

	# Create the certificates hierarchy expected by gitlab
	sudo mkdir -p $(dirname "$CERTIFICATE")

	# Get the certificate in PEM format and store it
	openssl s_client -connect ${SERVER}:${PORT} -showcerts </dev/null 2>/dev/null \| sed -e '/-----BEGIN/,/-----END/!d' \| sudo tee "$CERTIFICATE" >/dev/null

	// concurrent-queue.h
	#ifndef CONCURRENT_QUEUE_H_
	#define CONCURRENT_QUEUE_H_

	#include <queue>
	#include <thread>
	#include <mutex>
	#include <condition_variable>

	template <typename T>

	Go 1.10.3 vs 1.11beta3
	Linux Firefly3399 4.4.138 #3 SMP Sat Jul 21 18:29:19 EST 2018 aarch64 GNU/Linux

	go test crypto/tls -bench BenchmarkThroughput

	benchmark old ns/op new ns/op delta
	BenchmarkThroughput/MaxPacket/1MB-6 215113025 30982856 -85.60%
	BenchmarkThroughput/MaxPacket/2MB-6 373540806 47685945 -87.23%
	BenchmarkThroughput/MaxPacket/4MB-6 662471229 64692820 -90.23%
	BenchmarkThroughput/MaxPacket/8MB-6 1297366168 121892691 -90.60%

	# set the arch [IM]
	sudo dpkg --add-architecture i386

	# add the repos [IM]
	sudo add-apt-repository -y ppa:wine/wine-builds
	sudo add-apt-repository -y ppa:ethanak/milena

	# update the deps [IM]
	sudo apt-get update
	sudo apt-get -y upgrade

	#!/bin/bash

	# A simple script to build 64-bit and 32-bit Mesa and vkpipeline-db
	# on amd64 Debian testing, Debian unstable, and possibly some Ubuntu
	# with some tweaks.
	#
	# A situation with LLVM on Ubuntu was (is?) not perfect, so you are on your own.
	#
	# If you do not want to or can not use it, modify the script to install and use
	# other LLVM and update LLVMVERSION variable below.

	#!/bin/bash -x
	# make_arm64_rpi_kernel_debs.sh
	# Builds arm64 debian packages from the CURRENT rpi firmware repository kernel which is installed by:
	# sudo rpi-update
	# This runs on an arm64 host with arm64 compilation tools...
	# or with some sort of cross-compilation setup.
	# Debs are put in $workdir/build
	#
	# This will NOT work in Raspbian unless you have an arm64 compilation
	# environment setup. Appears to work on