xinyazhang’s gists

xinyazhang / 256-grayvim.lua

Created January 15, 2026 10:17

256-grayvim.lua

	-- Neovim color file
	-- Port of: 256-grayvim

	-- Clear highlights and set basic options
	vim.cmd("highlight clear")
	if vim.fn.exists("syntax_on") then
	vim.cmd("syntax reset")
	end

	vim.o.background = "dark"

xinyazhang / sdpa.py

Created November 5, 2024 21:43

A modifed version of PyTorch's SDPA.py benchmark

	import itertools
	from collections import defaultdict
	from contextlib import nullcontext
	from dataclasses import asdict, dataclass
	from typing import Callable, List, Tuple

	from tabulate import tabulate
	from tqdm import tqdm

	import torch

xinyazhang / with sdpa_kernel.py

Created November 4, 2024 17:34

PyTorch SDPA kernel selection

	import contextlib
	from torch.nn.functional import scaled_dot_product_attention
	from torch.nn.attention import sdpa_kernel, SDPBackend

	ctxmgr = contextlib.nullcontext()
	# ctxmgr = sdpa_kernel(backends=[SDPBackend.EFFICIENT_ATTENTION])
	# ctxmgr = sdpa_kernel(backends=[SDPBackend.FLASH_ATTENTION])
	# ctxmgr = sdpa_kernel(backends=[SDPBackend.MATH])
	# ctxmgr = sdpa_kernel(backends=[SDPBackend.CUDNN_ATTENTION])

xinyazhang / conf-gcc.sh

Created May 6, 2021 22:05

Compile GCC-8 From Source for Matlab 2020B

	# Install to /opt/gcc-8
	# Do NOT install to /usr/local, because of libstdc++.so.6 naming conflict.
	# Your system's compiler are likely incompatible with it.
	# There is also no "library-suffix" option. So simply don't install it there.
	# Optionally you can add --program-suffix=-8 but this creates quite a few troubles for Matlab to detect GCC.
	../gcc-8.4.0/configure --prefix=/opt/gcc-8 --enable-bootstrap --enable-languages=c,c++ --enable-shared --enable-threads=posix --enable-checking=release --enable-multilib --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-gcc-major-version-only --with-linker-hash-style=gnu --enable-plugin --enable-initfini-array --with-isl --without-cuda-driver --enable-gnu-indirect-function --enable-cet --with-tune=generic --build=x86_64-redhat-linux --disable-multilib

	# Important. Run this in your shell before "make", otherwise there will be various weird erros.
	# Don't know why gcc don't make this default.

xinyazhang / pwait.sh

Created January 20, 2021 05:48

Wait for the process of given pid to terminate

xinyazhang / hamming_c++tmp.cc

Created December 7, 2020 18:42

Hamming Number, C++ Template Metaprogramming

	/*
	hamming.cpp: a C++ version for calculating hamming numbers, aka regular numbers,
	aka ugly numbers, in compile time (using template meta programming).
	Copyright (C) 2008 Daniel Gutson

	hamming.cpp is free software: you can redistribute it and/or modify
	it under the terms of the GNU Affero General Public License as
	published by the Free Software Foundation, either version 3 of the
	License, or (at your option) any later version.

xinyazhang / npz_head.py

Last active May 27, 2021 06:37

Show What are Stored in an .NPZ File

	#!/usr/bin/env python3

	'''
	Copyright © 2020, 2021 Xinya Zhang <xinyazhang@utexas.edu>

	Permission is hereby granted, free of charge, to any person obtaining a copy
	of this software and associated documentation files (the "Software"), to deal
	in the Software without restriction, including without limitation the rights
	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	copies of the Software, and to permit persons to whom the Software is

xinyazhang / cli_starter.py

Created October 10, 2020 02:23

Python CLI Tool Starter Code

	#!/usr/bin/env python3

	import argparse

	def parse():
	p = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter)
	p.add_argument('example', help='Example usage of parser', type=float, default=0.0)
	args = p.parse_args()
	# print(args)
	return args

xinyazhang / f32-screen-share-build-obs.sh

Last active June 10, 2020 01:45

Zoom/Skype ScreenSharing on Fedora 32

xinyazhang / test_tf.sh

Last active December 4, 2019 23:01

Test successful installation of Tensorflow in One Line (Python3)

python3 -c 'import tensorflow as tf; c = tf.constant("Testing"); sess = tf.Session(); print(sess.run(c)); print(tf.test.gpu_device_name())'

	#!/bin/bash

	# Zoom's Screen Sharing is tricky because
	# 1. I'd rather run it (or, any properity software) in containerized
	# environment (i.e., flatpak on Fedora 32), so big NO to the official rpm
	# 2. I have switched to Gnome Wayland recently and no intention to switch back
	# to X11, due to a few reasons like Firefox looks better on Gnome Wayland.
	# 3. RPMFusion's OBS is broken on my system for whatever reason.

	# After searching on the Internet and github for a while I found and tested the following solutions.

Xinya Zhang xinyazhang