drscotthawley

#! /usr/bin/env python 

# OS-Agnostic PS5 DualSense Controller Listener
# Author: Scott H. Hawley

# Instructions: 
# 1. Pair the DualSense controller with your computer
# 2. Install hidapi system binary, e.g. on Mac: brew install hidapi 
# 3. Install Python packages: pip install hidapi pygame numpy
# 4. Run this script! 

drscotthawley

# tails output of any SLURM job that is listed in the queue. 
# if job is pending, tailjob will wait until the output file exists
# usage: tailjob <job_id>
tailjob() {
    local job_id=$1
    if [[ -n "$job_id" ]]; then
        local stdout_file=$(scontrol show job "$job_id" | awk -F= '/StdOut=/{print $2}')
        echo "Running tail -F $stdout_file"
        tail -F "$stdout_file"
    else

drscotthawley

from einops import rearrange as _rearrange

class RearrangeWrapper():
    "wrapper to endow einops.rearrange with an 'inverse' operation"
    def __init__(self):
        self.shape, self.s = None, None     # just in case someone tries to call inverse first
      
    def __call__(self, x, s:str, **kwargs): # this 'forward' call is lightweight to preserve original usage
        self.shape, self.s = x.shape, s
        return _rearrange(x, s, **kwargs)

drscotthawley

def magic_mult(a, b):
    """
    Tries to multiply two arrays/matrices in a variety of ways
    Returns all possible working combos as a dict, with the shapes of their respective outputs
    Author: Scott H. Hawley, @drscotthawley
    """
    combos = ['a*b', 'a*b.T', 'a.T*b', 'a.T*b.T','b*a', 'b*a.T', 'b.T*a', 'b.T*a.T'] # elementwise multiplications
    combos += [s.replace('*',' @ ') for s in combos] # matrix multiplications (I like the space here)
    working_combos = {}
    for s in combos:

drscotthawley

#! /usr/bin/env python3 

"""
SLURM usage tracker Discord bot by drscotthawley & rom1504

Requires external file token_channel.csv to connect to Discord
Syntax of that file should be:

token,channel
<DISCORD_BOT_TOKEN>,<CHANNEL_ID>

drscotthawley

drscotthawley

#!/usr/bin/env python3

# Do violence to the Logitech C920s webcam settings in realtime
# To annoy your Zoom-mates by constantly changing the image

from pynput.keyboard import Listener
import os, sys
import random
import time

drscotthawley

# In case you didn't think to add k-fold cross-validation until late in your
# ML project,...
# This is built for a situation where datasets are arrays of, say, images. 

def kfold_swap(train_X, train_Y, val_X, val_Y, k):
    """
    Swaps val with a section of train, given a value for k
    "Duct tape" approach used to "retro-fit" k-fold cross-validation while minimally 
        disturbing the rest of the code, while avoiding reloading data from disk and 
        keeping RAM use manageable. (e.g. np.append() is bad b/c it would copy all of train)

drscotthawley

#! /usr/bin/env python
'''
Simulation of a 'magnetic' pendulum. Actually we'll just use
electrostatic charges instead of magnets, but..good enough, right?

Plots an image showing which source the object is closest to after a certain time
(Note: Depending on params like maxiter, the object may still be moving at the
end of the simulation, so the 'ending position' may not be where it comes to rest.)

This code integrates all the (non-interacting) test objects at once, on the GPU.

drscotthawley

#! /usr/bin/env python

# Little script I use to start a new Markdown blog entry.
# Run from the parent directory above the blog directory,
# or supply a full path to run from anywhere.
#
# Usage:  newpost.py <title>
#  It automatically figures out what the current date is to
#  create a new entry, and supplies a default header with a title
#  and a bibliography placement