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).
Matrix multiplication is a mathematical operation that defines the product of
| #include "SDL.h" | |
| #include <stdio.h> | |
| #include <stdlib.h> | |
| #include <time.h> | |
| SDL_Window *window; | |
| SDL_Renderer *renderer; | |
| int WINDOW_WIDTH = 510; |
| ### | |
| ### | |
| ### UPDATE: For Win 11, I recommend using this tool in place of this script: | |
| ### https://christitus.com/windows-tool/ | |
| ### https://github.com/ChrisTitusTech/winutil | |
| ### https://www.youtube.com/watch?v=6UQZ5oQg8XA | |
| ### iwr -useb https://christitus.com/win | iex | |
| ### | |
| ### OR take a look at | |
| ### https://github.com/HotCakeX/Harden-Windows-Security |
| # alias to edit commit messages without using rebase interactive | |
| # example: git reword commithash message | |
| reword = "!f() {\n GIT_SEQUENCE_EDITOR=\"sed -i 1s/^pick/reword/\" GIT_EDITOR=\"printf \\\"%s\\n\\\" \\\"$2\\\" >\" git rebase -i \"$1^\";\n git push -f;\n}; f" | |
| # aliases to change a git repo from private to public, and public to private using gh-cli | |
| alias gitpublic="gh repo edit --accept-visibility-change-consequences --visibility public" | |
| alias gitprivate="gh repo edit --accept-visibility-change-consequences --visibility private" | |
| # delete all your repos using gh-cli (please do not run this unless you want to delete all your repos) | |
| gh repo list --limit 300 --json url -q '.[].url' | xargs -n1 gh repo delete --yes |
| import sys | |
| import colorsys | |
| from colorz import colorz | |
| WALLPAPER = '/home/james/.wallpaper' | |
| COLORS = '/home/james/.colors' | |
| XRESOURCES = '/home/james/.Xresources' | |
| cols = '' | |
| xres = """ |
| #!/bin/bash | |
| # License: Public Domain. | |
| # Author: Joseph Wecker, 2012 | |
| # | |
| # -- DEPRICATED -- | |
| # This gist is slow and is missing .bashrc_once | |
| # Use the one in the repo instead! https://github.com/josephwecker/bashrc_dispatch | |
| # (Thanks gioele) | |
| # | |
| # Are you tired of trying to remember what .bashrc does vs .bash_profile vs .profile? |
This is a post by Joel Spolsky. The original post is linked at the bottom.
This is such a common question here and elsewhere that I will attempt to write the world's most canonical answer to this question. Hopefully in the future when someone on answers.onstartups asks how to split up the ownership of their new company, you can simply point to this answer.
The most important principle: Fairness, and the perception of fairness, is much more valuable than owning a large stake. Almost everything that can go wrong in a startup will go wrong, and one of the biggest things that can go wrong is huge, angry, shouting matches between the founders as to who worked harder, who owns more, whose idea was it anyway, etc. That is why I would always rather split a new company 50-50 with a friend than insist on owning 60% because "it was my idea," or because "I was more experienced" or anything else. Why? Because if I split the company 60-40, the company is going to fail when we argue ourselves to death. And if you ju
| #! /usr/bin/env python | |
| """ Convert values between RGB hex codes and xterm-256 color codes. | |
| Nice long listing of all 256 colors and their codes. Useful for | |
| developing console color themes, or even script output schemes. | |
| Resources: | |
| * http://en.wikipedia.org/wiki/8-bit_color | |
| * http://en.wikipedia.org/wiki/ANSI_escape_code |
| git filter-branch --env-filter 'export GIT_COMMITTER_DATE="$GIT_AUTHOR_DATE"' |
