Kevin Carter cloudnull

Creating a dynamic site-to-site VPN with OpenSwan on Ubuntu 10.04 on EC2

There are many tutorials floating around the web that almost get you a dynamic VPN in EC2. The goal of this tutorial is to be a one-stop-shop for this specific setup.

[OSEv3:children]
masters
nodes

[OSEv3:vars]
ansible_ssh_user=sjennings
ansible_become=yes

deployment_type=origin

Streambeats Dropbox audio preview snippet

Why?

Harris (https://twitter.com/HarrisHeller) has done a remarkable job with Streambeats (https://www.streambeats.com) and the massive library of high quality music for your streaming needs. The library was so vast that I didn't want to just download everything and listen to it locally, so instead I did what every programmer would do. I did a small code snippet to add a preview pane to the Dropbox experience.

How?

Copy the snippet below
Enter a folder in Dropbox containing music files; e.g. https://www.dropbox.com/sh/1cgxqyptl2jq8f5/AAAeQ1i1rwAV6zIDNN2VHJY6a/8.%20White?dl=0&subfolder_nav_tracking=1
Switch to table view in the folder view
Press CTRL+SHIFT+I (Windows) / CMD+SHIFT+I (Mac) to open Chrome Developer Tools

Running AI on AMD RDNA 4 (RX 9000 Series): The ROCm 7.1 & Flash Attention Survival Guide

Hardware: AMD Radeon RX 9070 XT (gfx1201)
OS: Ubuntu 22.04 LTS
Software: ROCm 7.1.0, PyTorch 2.8 (Nightly/Custom)

Getting bleeding-edge AMD hardware to play nice with AI workflows often feels like solving a puzzle. If you picked up an RDNA 4 card (like the RX 9070 XT) and tried to install standard AI libraries, you likely hit walls of C++ assembly errors.

Here is the breakdown of why it fails, and the specific strategies to get Flash Attention 2, ComfyUI, and Flux.1 running natively.

	#!/bin/bash

	### ABOUT
	### Runs rsync, retrying on errors up to a maximum number of tries.
	### Simply edit the rsync line in the script to whatever parameters you need.

	# Trap interrupts and exit instead of continuing the loop
	trap "echo Exited!; exit;" SIGINT SIGTERM

	MAX_RETRIES=50

	#!/usr/bin/env python

	"""
	Build wheels of all currently installed packages (as listed by "pip freeze")
	"""

	import glob
	import importlib
	from subprocess import call

	# arpaname.py, (C)2022 by Jan-Piet Mens <jp@mens.de>
	# Convert an IPv4 or IPv6 address in textual form into a string whose value is
	# the reverse-map domain name of the address.
	#
	# - debug: msg="{{ "192.168.1.3" \| arpaname }}"
	# "3.1.168.192.in-addr.arpa."
	#
	# - debug: msg="{{ "2001:DB8::7" \| arpaname }}"
	# "7.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.b.d.0.1.0.0.2.ip6.arpa."

	{
	description = "A nixos cloudinit base image without nixos-infect";

	inputs = {
	nixpkgs.url = "github:nixos/nixpkgs";
	};

	outputs = { self, nixpkgs }:
	let
	system = "x86_64-linux";