Rohit Goswami HaoZeke

Nix on macOS Catalina

I'm writing this gist for my own records but it might help someone else too.

Installing Nix

Support for Catalina has improved a lot since the update was first rolled out.

Note: See the NixOS manual for discussion of the --darwin-use-unencrypted-nix-store-volume option.

PyTorch IR

This document presents the IR as of October 17th 2018. Future changes like mutability might render parts of this document outdated.

PyTorch uses an SSA-based IR, which is built of multiple entities:

Graph is generally the outermost container for the program representation. At the moment all programs are mostly pure (modulo special operators like prim::Print or prim::PythonOp), but this will change in the future.
Then, there are Blocks, which you can treat as functions. They have a list of inputs and outputs, and a (topologically ordered) list of Nodes. Every Graph has a top-level Block which is (using C lingo) like a main function.
Nodes, in turn, represent calls to functions (with possibly multiple arguments and returns).
Finally, every single intermediate value that appears in the program is represented using a Value - the root Blocks have a list of input values, and every Node takes them as inputs, and returns some more as outputs. Every Value has a Type a

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

Adding automatic light/dark theme switching to doom-emacs running on a mac with ambient light sensor.

Idea adapted from: Matt Bilyeu https://matthewbilyeu.com/blog/2018-04-09/setting-emacs-theme-based-on-ambient-light

Installation

Make the lmutracker executable using clang and place it in your custom doom directory:

$ cd ~/.doom.d/    # start in your custom doom directory, wherever that is for you.

$ touch lmutracker.mm # copy in the contents of this file however you like

Client side searching for Hugo.io with Fuse.js

WHY
Sample
Setup
Files

layouts/_default/index.json

	---
	title: "Coloring stuff!"
	author: "Andrew Heiss"
	date: "`r Sys.Date()`"
	output:
	xaringan::moon_reader:
	lib_dir: "libs"
	seal: false # No title slide
	nature:
	highlightStyle: github

	#!/usr/bin/python3
	"""
	Export your Windows Bluetooth LE keys into Linux! (arch edition)

	Thanks to: http://console.systems/2014/09/how-to-pair-low-energy-le-bluetooth.html
	discussed here: https://unix.stackexchange.com/questions/402488/dual-boot-bluetooth-device-pairing
	Usage:

	$ ./export-ble-infos.py <args>
	$ sudo bash -c 'cp -r ./bluetooth /var/lib'

	#!/bin/sh

	agr () {
	# find and replace
	regex=s/${1}/${2}/g;
	ag $1 -l \| xargs sed -i.agr_backup $regex;
	# delete backups
	ag -G .agr_backup -l \| xargs rm
	}

	#!/bin/bash

	##############################################################################
	# An rclone backup script by Jared Males ([email protected])
	#
	# Copyright (C) 2018 Jared Males <[email protected]>
	#
	# This script is licensed under the terms of the MIT license.
	# https://opensource.org/licenses/MIT
	#