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heiner / dmv.md
Created May 7, 2026 17:48

DMV Practice Questions (with Correct Answers)

1. When two vehicles enter an intersection from different highways at the same time, which vehicle must yield the right-of-way?

  1. Either one.
  2. Vehicle on the left.
  3. Vehicle on the right.
  4. Neither one.
@heiner
heiner / programming-pearls.md
Created April 25, 2026 23:00
@heiner
heiner / gist:a0e2595f65e24f908da29576d1930826
Created October 6, 2023 11:43
https://cdn.shopify.com/s/files/1/0317/7116/4804/files/Rasur_Guide_Updated_2022_komprimiert.pdf
@heiner
heiner / store_bug.py
Created August 4, 2023 20:42
"""
Repro for ownership issue with Python stores for torch.distributed.
rm -rf /tmp/store_bug; for i in {0..1}; do python -u store_bug.py $i 2 & done && wait
"""
import os
import datetime
import sys
import time
@heiner
heiner / tee.py
Last active June 21, 2022 19:10
import os
import sys
import ctypes
ld = ctypes.CDLL(None, use_errno=True)
SPLICE_F_NONBLOCK = getattr(os, "SPLICE_F_NONBLOCK", 0x02)
def tee(fd_in, fd_out, length, flags=SPLICE_F_NONBLOCK):
@heiner
heiner / shm.py
Last active June 20, 2022 16:06 — forked from jakirkham/shm.py
Some Python ctypes-based POSIX shared memory functions
import os
import sys
try:
from _posixshmem import shm_open, shm_unlink
except ImportError:
import ctypes
dllname = None
if sys.platform.startswith("linux"):
@heiner
heiner / README.md
Last active February 14, 2022 14:04

Experiment data from the moolib whitepaper.

@heiner
heiner / write_many_ttys.py
Created October 13, 2021 17:45
import contextlib
import fcntl
import os
import sys
import termios
import tty
@contextlib.contextmanager
def no_echo():
@heiner
heiner / cachedenvs.py
Created September 21, 2021 11:20
import queue
import threading
import gym
def target(resetqueue, readyqueue):
while True:
env = resetqueue.get()
if env is None:
@heiner
heiner / plot.py
Created September 21, 2021 09:22
#!/usr/bin/env python
"""
Script for plotting results.
```
python plot.py logs.tsv
```
"""
import argparse
import glob