Angus Hollands agoose77

## falsehoods-programming-time-list.md

      
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                timvisee
                / falsehoods-programming-time-list.md
            
            
              Last active
              May 22, 2024 02:28
            
              
                Falsehoods programmers believe about time, in a single list
              
          
    Falsehoods programmers believe about time

This is a compiled list of falsehoods programmers tend to believe about working with time.
Don't re-invent a date time library yourself.
If you think you understand everything about time, you're probably doing it wrong.
Falsehoods


There are always 24 hours in a day.
February is always 28 days long.
Any 24-hour period will always begin and end in the same day (or week, or month).


## Matrix.md

      
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                nadavrot
                / Matrix.md
            
            
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              May 15, 2024 11:20
            
              
                Efficient matrix multiplication
              
          
    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

  
## cool-game-programming-blogs.opml
<?xml version="1.0" encoding="UTF-8"?>
<opml version="1.0">
    <head>
        <title>Graphics, Games, Programming, and Physics Blogs</title>
    </head>
    <body>
        <outline text="Tech News" title="Tech News">
            <outline type="rss" text="Ars Technica" title="Ars Technica" xmlUrl="http://feeds.arstechnica.com/arstechnica/index/" htmlUrl="https://arstechnica.com"/>
            <outline type="rss" text="Polygon - Full" title="Polygon - Full" xmlUrl="http://www.polygon.com/rss/index.xml" htmlUrl="https://www.polygon.com/"/>
            <outline type="rss" text="Road to VR" title="Road to VR" xmlUrl="http://www.roadtovr.com/feed" htmlUrl="https://www.roadtovr.com"/>

## README.md

      
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              78 stars
            
          
                Mnkai
                / README.md
            
            
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              April 13, 2024 14:11
            
              
                TDP and turbo parameter modification with MSR on non-overclockable Intel CPU (such as Intel i7-8550U)
              
          
    TDP and turbo parameter modification with MSR on non-overclockable CPU

Disclaimer


MSR modification may void your CPU's (or system board's) warranty. Proceed with care. I'm not responsible for any destruction caused by this article.
MSR address (greatly) differs from CPU to CPU. Check your own CPU's MSR address using Intel's documentation.
Only tested on Intel i7-8550U (Kaby Lake R).
This article is translation of this article. If you can understand Korean, I recommend reading that article, not this.

Start


## rad.py
# Reverse-mode automatic differentiation

import math

# d(-x) = -dx
def func_neg(x):
    return -x, [-1]

# d(x + y) = dx + dy
def func_add(x, y):

## multiauthenticator.py
from urllib.parse import urlsplit

from tornado import gen
from tornado.escape import url_escape
from tornado.httputil import url_concat

from traitlets import (
    Unicode, Integer, Dict, TraitError, List, Bool, Any,
    Type, Set, Instance, Bytes, Float,
    observe, default,

## Ubuntu 14.04 on Optimus Laptop.txt
###  NOTE  ###

The below gist is converted to a blog post and available at below link. Refer that instead.

http://hemenkapadia.github.io/blog/2016/11/11/Ubuntu-with-Nvidia-CUDA-Bumblebee.html


#### Note about kernel versions ####
Between kernel versions 4.2 and 4.4 there are different options that need to bet set
to get this working. The same is highlighted below when necessary. I have not tested

## containers-and-permissions.md

      
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                agoose77
                / containers-and-permissions.md
            
            
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              May 13, 2022 12:18
            
              
                A reference for running containers with non-root permissions
              
          
    When implementing development environments inside a container, usually I want to:

Run as non-root inside the container (many tools do not like being run as root).
Behave as the non-root user executing the container when reading/writing from mounted volumes

There are some additional (small) security benefits from running as non-root inside a container.
The solution to these problems is complicated by the way that different container runtimes behave:
keep-id

Across the different container runtimes, there is often a flag such as userns=keep-id that maps the UID:GID of the host to the container. Linux creates users by default with UID 1000, so default non-root users will often map directly to host UID.

  
## gist:3688502

(define (pn x) (for-each display (list x "\n")))

(define (! n)
  (let iter ((product 1)
             (counter 1))
    (if (> counter n)
        product
        (iter (* counter product)
              (+ counter 1)))))

## gist:3759951
#!/bin/bash

# kill all subshells and processes on exit
trap "kill 0" SIGINT
# start commands in subshells so all their spawn DIE when we exit
( process1 ) &
( process2 ) &
wait
	<?xml version="1.0" encoding="UTF-8"?>
	<opml version="1.0">
	<head>
	<title>Graphics, Games, Programming, and Physics Blogs</title>
	</head>
	<body>
	<outline text="Tech News" title="Tech News">
	<outline type="rss" text="Ars Technica" title="Ars Technica" xmlUrl="http://feeds.arstechnica.com/arstechnica/index/" htmlUrl="https://arstechnica.com"/>
	<outline type="rss" text="Polygon - Full" title="Polygon - Full" xmlUrl="http://www.polygon.com/rss/index.xml" htmlUrl="https://www.polygon.com/"/>
	<outline type="rss" text="Road to VR" title="Road to VR" xmlUrl="http://www.roadtovr.com/feed" htmlUrl="https://www.roadtovr.com"/>
	# Reverse-mode automatic differentiation

	import math

	# d(-x) = -dx
	def func_neg(x):
	return -x, [-1]

	# d(x + y) = dx + dy
	def func_add(x, y):
	from urllib.parse import urlsplit

	from tornado import gen
	from tornado.escape import url_escape
	from tornado.httputil import url_concat

	from traitlets import (
	Unicode, Integer, Dict, TraitError, List, Bool, Any,
	Type, Set, Instance, Bytes, Float,
	observe, default,
	### NOTE ###

	The below gist is converted to a blog post and available at below link. Refer that instead.

	http://hemenkapadia.github.io/blog/2016/11/11/Ubuntu-with-Nvidia-CUDA-Bumblebee.html


	#### Note about kernel versions ####
	Between kernel versions 4.2 and 4.4 there are different options that need to bet set
	to get this working. The same is highlighted below when necessary. I have not tested

	(define (pn x) (for-each display (list x "\n")))

	(define (! n)
	(let iter ((product 1)
	(counter 1))
	(if (> counter n)
	product
	(iter (* counter product)
	(+ counter 1)))))
	#!/bin/bash

	# kill all subshells and processes on exit
	trap "kill 0" SIGINT
	# start commands in subshells so all their spawn DIE when we exit
	( process1 ) &
	( process2 ) &
	wait