Install the OpenSSL on Debian based systems
sudo apt-get install openssl
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
Here's a common predicament: you have a value, e.g., some string or number or struct, that can be read and written by many goroutines, and you want to make sure readers and writers don't collide -- that readers get the most recently written value, and no other, and that writers don't write the value while a reader is reading it.
You may have an idea in your head about how you would approach this problem, and your idea may be completely correct. But I want to try to level up your Go-fu
# Install `dnsmasq` and configure for *.test domains | |
$ brew install dnsmasq | |
$ vim /usr/local/etc/dnsmasq.conf | |
# Reload configuration and clear cache | |
$ sudo launchctl unload /Library/LaunchDaemons/homebrew.mxcl.dnsmasq.plist | |
$ sudo launchctl load /Library/LaunchDaemons/homebrew.mxcl.dnsmasq.plist | |
$ dscacheutil -flushcache |
SSHPass is a tiny utility, which allows you to provide the ssh password without using the prompt. This will very helpful for scripting. SSHPass is not good to use in multi-user environment. If you use SSHPass on your development machine, it don't do anything evil.
apt-get install sshpass
# taken from http://www.piware.de/2011/01/creating-an-https-server-in-python/ | |
# generate server.xml with the following command: | |
# openssl req -new -x509 -keyout server.pem -out server.pem -days 365 -nodes | |
# run as follows: | |
# python simple-https-server.py | |
# then in your browser, visit: | |
# https://localhost:4443 | |
import BaseHTTPServer, SimpleHTTPServer | |
import ssl |
// "License": Public Domain | |
// I, Mathias Panzenböck, place this file hereby into the public domain. Use it at your own risk for whatever you like. | |
// In case there are jurisdictions that don't support putting things in the public domain you can also consider it to | |
// be "dual licensed" under the BSD, MIT and Apache licenses, if you want to. This code is trivial anyway. Consider it | |
// an example on how to get the endian conversion functions on different platforms. | |
#ifndef PORTABLE_ENDIAN_H__ | |
#define PORTABLE_ENDIAN_H__ | |
#if (defined(_WIN16) || defined(_WIN32) || defined(_WIN64)) && !defined(__WINDOWS__) |