Harold Brenes harold-b

These links no longer work. Springer have pulled the free plug.

Graduate texts in mathematics

duplicates = multiple editions

A Classical Introduction to Modern Number Theory, Kenneth Ireland Michael Rosen

Linux/Unix Process Trees and Process Hierarchy

Sleep is an executable that we can use to simulate a blocking process for the purposes of demonstrating how to handle child processes.

Here's our base case.

The execution pattern is going to occur in this way: zsh (interactive) -> bash (./parent.sh) -> bash (./child.sh) -> sleep. Because both Bash processes performed an exec without fork, the bash (./parent.sh) process will be replaced by Bash (./child.sh), which itself will be replaced by sleep. This will mean that there are no child processes to manage except for the immediate child of sleep. Upon sending SIGINT, the sleep process will be terminated, and there will be no resource leak. No orphaned nor zombie processes.

./parent.sh:

GPU Optimization for GameDev

Graphics Pipeline / GPU Architecture Overview

2011 - A trip through the Graphics Pipeline 2011
2013 - Performance Optimization Guidelines and the GPU Architecture behind them
2015 - Life of a triangle - NVIDIA's logical pipeline
2015 - Render Hell 2.0
2016 - How bad are small triangles on GPU and why?
2017 - GPU Performance for Game Artists
2019 - Understanding the anatomy of GPUs using Pokémon

Cloud images in Proxmox

A script which automates these steps for multiple distros incl. CoreOS, CentOS, Arch and ALpine

create-cloud-template.sh

Steps for creating an Ubuntu 18.04 cloud template

Using a ready-to-use Ubuntu image

How to get Intel graphics working on MacBook Pro mid 2012 (10,1) Ubuntu 20.04:

Ubuntu was intalled with the default nvidia drivers that it brought (I believe 3.90)

Clone https://github.com/0xbb/apple_set_os.efi

For details, see the README.md

Build it:

Installing .NET 5 in Amazon Linux 2 for ARM64

This is a way to install .NET 5 in your home directory without modifying the system.

At the time of this writing, Amazon Linux 2 for ARM64 almost works already, but there is a problem with the ICU library. I will show this problem and how to fix it.

Start Amazon Linux 2 and sign in. (I recommend an m6g.medium instance

Tested on macOS:

Install the CodeLLDB VSCode extension. Unlike the debugger in the C/C++ extension, this allows to set breakpoints inside Zig "test" blocks (in the MS C/C++ extension debugger, breakpoints inside test blocks will be disabled once the debugger starts for unknown reasons.
When compiling the test, tell it to also emit a binary: zig test -femit-bin=zig-out/bin/my-test src/bla.zig, otherwise there will be no executable to debug.
The compiled test executable expects the path to the Zig executable as first command line argument, the launch.json file needs to be setup accordingly (note the args item):


	Apache License
	Version 2.0, January 2004
	http://www.apache.org/licenses/

	TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

	1. Definitions.

	"License" shall mean the terms and conditions for use, reproduction,

	/*
	Delta Compression by Glenn Fiedler.
	This source code is placed in the public domain.
	http://gafferongames.com/2015/03/14/the-networked-physics-data-compression-challenge/
	*/

	#include <stdint.h>
	#include <stdio.h>
	#include <assert.h>
	#include <string.h>

	#!/usr/bin/env python
	import SimpleHTTPServer

	class MyHTTPRequestHandler(SimpleHTTPServer.SimpleHTTPRequestHandler):
	def end_headers(self):
	self.send_my_headers()
	SimpleHTTPServer.SimpleHTTPRequestHandler.end_headers(self)

	def send_my_headers(self):
	self.send_header("Cache-Control", "no-cache, no-store, must-revalidate")