Jeff Burdges burdges

PVM Benchmarking [Draft 1]

Interpreter vs Recompiler vs EVM L1

This benchmark evaluates execution performance of JAM's Polkadot Virtual Machine (PVM) using two modes: an interpreter and an ahead-of-time (AOT) recompiler. All tests were performed on Tessera, a clean-room Python implementation of the PVM developed by ChainScore Labs. Benchmarks include synthetic (ADD_JUMP) and real-world (Conway's Game of Life) workloads.

ADD_JUMP Benchmark

Async/Await - The challenges besides syntax - Cancellation

This is the second article in a series of articles around Rusts new async/await feature. The first article about interfaces can be found here.

In this part of the series we want to a look at a mechanism which behaves very different in Rust than in all other languages which feature async/await support. This mechanism is Cancellation.

Rust UI Difficulties

I wanted to give a little bit of a discussion on all my thinking about why UI's are a tricky to get right in Rust. I want to try and differentiate this discussion because there are a number of decent UI frameworks that have been bound to Rust. This is great! I do not want to discourage any of their work, they are wonderful members of our community.

What this is about is how it would be possible to write a good UI framework

Key exchange in supersingular space-time

I was asked to vulgarize SIDH. Here is a very poor attempt!

Alice and Bob are space travelers. They both own a spaceship capable of traveling the galaxy through supersingular space-time at incredible speeds. They want to discuss a top-secret space mission, but they are afraid that the evil Zkptrx will spy upon their

	#! /bin/bash
	set -euo pipefail

	# This script will remove automatic association for all networks not listed in the whitelist
	# passed as the first argument. Passwords will NOT be removed from the Keychain.
	#
	# Alternatively, you can untick "Remember networks" in Network Preferences > Wi-Fi > Advanced,
	# but then you won't be able to auto-join networks even temporarily, and you might already
	# have a long list to go through.
	#

	Right about now, Free Software court is in full effect
	Judge Whax presiding
	In the case of Free Software vs. the GNOME Foundation;
	prosecuting attorneys are: Satoshi, YYY, and ZZ-motherfucking-Z

	Order, order, order
	Satoshi, take the motherfucking stand
	Do you swear to tell the truth, the whole truth
	and nothing but the truth so help your nerd ass?

	#!/bin/bash
	# rluks.sh: Mount your encrypted LUKS drives by uuid over SSH
	# Copyright (C) 2016+ James Shubin, AGPLv3+
	# Written by James Shubin <[email protected]>
	# You probably want to modify the following globals to match your needs...

	SERVER='server.example.com' # expected server for running script
	HOSTNAME='myserver' # expected hostname for running locally
	MEDIA='/media/' # mount/media directory, eg: /media/
	declare -A MAP # create an associative array


	virtualenv virtenv-txtorcon
	. ./virtenv-txtorcon/bin/activate
	pip install txtorcon

	export project=myproject
	export secret=`pwgen 64`
	mkdir -p public_html/$secret
	cp -a $project public_html/$secret
	touch public_html/index.html

	$ curl --insecure -H "Host: http://github.com " -v https://github.com .A520FF6C4690D131A96967BEDD740751FB33A230.exit/
	* About to connect() to proxy 127.0.0.1 port 8118 (#0)
	* Trying 127.0.0.1...
	% Total % Received % Xferd Average Speed Time Time Time Current
	Dload Upload Total Spent Left Speed
	0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0* connected
	* Connected to 127.0.0.1 (127.0.0.1) port 8118 (#0)
	* Establish HTTP proxy tunnel to github.com.A520FF6C4690D131A96967BEDD740751FB33A230.exit:443
	> CONNECT github.com.A520FF6C4690D131A96967BEDD740751FB33A230.exit:443 HTTP/1.1
	> User-Agent: curl/7.26.0

	package com.example.jeremybell.myapplication

	import android.app.Activity
	import android.os.Bundle
	import android.view.Menu
	import android.view.MenuItem

	class MyActivity extends Activity {
	override def onCreate(savedInstanceState: Bundle): Unit = {
	super.onCreate(savedInstanceState)