John Bolliger skunkworker

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

Probably one of the easiest things you'll ever do with gpg

Install Keybase: https://keybase.io/download and Ensure the keybase cli is in your PATH

First get the public key

keybase pgp export | gpg --import

Next get the private key

How to Build a Successful Information Security Career (Daniel Miessler)
- https://danielmiessler.com/blog/build-successful-infosec-career/#gs.DtVCbbw
The First Steps to a Career in Information Security (Errata Security - Marisa Fagan)
- http://blog.erratasec.com/2010/04/first-steps-to-career-in-information.html#.WFrbofkrIuU
Hiring your first Security Professional (Peerlyst - Dawid Balut)
- https://www.peerlyst.com/posts/hiring-your-first-security-professional-dawid-balut
How to Start a Career in Cyber security
- https://www.concise-courses.com/security/how-to-start-your-career/
How to Get Into Information Security (ISC^2)
https://www.isc2.org/how-to-get-into-information-security.aspx

	extension UIHostingController {
	convenience public init(rootView: Content, ignoreSafeArea: Bool) {
	self.init(rootView: rootView)

	if ignoreSafeArea {
	disableSafeArea()
	}
	}

	func disableSafeArea() {

	//
	// Created by https://quickplan.app on 2020/11/8.
	//

	import SwiftUI

	/// Control if allow to dismiss the sheet by the user actions
	/// - Drag down on the sheet on iPhone and iPad
	/// - Tap outside the sheet on iPad
	/// No impact to dismiss programatically (by calling "presentationMode.wrappedValue.dismiss()")

	After automatically updating Postgres to 10.0 via Homebrew, the pg_ctl start command didn't work.
	The error was "The data directory was initialized by PostgreSQL version 9.6, which is not compatible with this version 10.0."

	Database files have to be updated before starting the server, here are the steps that had to be followed:

	# need to have both 9.6.x and latest 10.0 installed, and keep 10.0 as default
	brew unlink postgresql
	brew install [email protected]
	brew unlink [email protected]
	brew link postgresql

	#!/bin/bash
	# from https://chromium.woolyss.com/
	# and https://gist.github.com/addyosmani/5336747
	# and https://chromium.googlesource.com/chromium/src/+/lkgr/headless/README.md
	sudo apt-get update
	sudo apt-get install software-properties-common
	sudo add-apt-repository ppa:canonical-chromium-builds/stage
	sudo apt-get update
	sudo apt-get install chromium-browser
	chromium-browser --headless --no-sandbox http://example.org/

	/*
	* General utils for managing cookies in Typescript.
	*/
	export function setCookie(name: string, val: string) {
	const date = new Date();
	const value = val;

	// Set it expire in 7 days
	date.setTime(date.getTime() + (7 * 24 * 60 * 60 * 1000));

	# This task will notify Sentry via their API[1] that you have deployed
	# a new release. It uses the release timestamp as the `version`
	# (like 20151113182847) and the git ref as the optional `ref` value.
	#
	# This task requires several environment variables be set (or just
	# hardcode the values in here if you like living on the edge):
	#
	# ENV['SENTRY_API_ENDPOINT'] : API endpoint, https://app.getsentry.com
	# ENV['SENTRY_ORG'] : the organization for this app
	# ENV['SENTRY_PROJECT'] : the project for this app

	#!/usr/bin/env bash
	# https://developers.supportbee.com/blog/setting-up-cucumber-to-run-with-Chrome-on-Linux/
	# https://gist.github.com/curtismcmullan/7be1a8c1c841a9d8db2c
	# https://stackoverflow.com/questions/10792403/how-do-i-get-chrome-working-with-selenium-using-php-webdriver
	# https://stackoverflow.com/questions/26133486/how-to-specify-binary-path-for-remote-chromedriver-in-codeception
	# https://stackoverflow.com/questions/40262682/how-to-run-selenium-3-x-with-chrome-driver-through-terminal
	# https://askubuntu.com/questions/760085/how-do-you-install-google-chrome-on-ubuntu-16-04

	# Versions
	CHROME_DRIVER_VERSION=`curl -sS https://chromedriver.storage.googleapis.com/LATEST_RELEASE`