(C-x means ctrl+x, M-x means alt+x)
The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:
Sang-Hoon RHEE rhee
rhee-elten
/ proc_stdout_gen.py
Created
May 16, 2022 00:59
## gen() function for proc.stdout ( run_commands, vdl_run ) ## async read from proc.stdout
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| ## gen() function for proc.stdout ( run_commands, vdl_run ) | |
| ## async read from proc.stdout | |
| if True: | |
| def gen(proc): | |
| remains = b'' # remaining from prev read | |
| while proc.poll() is None: | |
| rlist, _, _ = select([proc.stdout],[],[],500) | |
| if proc.stdout not in rlist: | |
| continue | |
| data = os.read(proc.stdout.fileno(), 16384) |
rhee
/ nv_gpu_stat.py
Last active
October 25, 2022 00:38
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| ## monitor GPU usage in jupyter notebook -- rhee.elten@gmail.com | |
| ## migrated to: https://gist.github.com/rhee-elten/1a1070e3a812ca863c3b937b5180b2f8 |
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| <body onload=z=c.getContext`2d`,setInterval(`c.width=W=150,Y<W&&P<Y&Y<P+E|9<p?z.fillText(S++${Y=`,9,9|z.fillRect(p`}*0,Y-=--M${Y+Y},P+E,9,W),P))):p=M=Y=S=6,p=p-6||(P=S%E,W)`,E=49) onclick=M=9><canvas id=c> |
The Linux kernel is written in C, so you should have at least a basic understanding of C before diving into kernel work. You don't need expert level C knowledge, since you can always pick some things up underway, but it certainly helps to know the language and to have written some userspace C programs already.
It will also help to be a Linux user. If you have never used Linux before, it's probably a good idea to download a distro and get comfortable with it before you start doing kernel work.
Lastly, knowing git is not actually required, but can really help you (since you can dig through changelogs and search for information you'll need). At a minimum you should probably be able to clone the git repository to a local directory.
erincandescent
/ RISC-V.md
Created
July 25, 2019 23:32
This document was originally written several years ago. At the time I was working as an execution core verification engineer at Arm. The following points are coloured heavily by working in and around the execution cores of various processors. Apply a pinch of salt; points contain varying degrees of opinion.
It is still my opinion that RISC-V could be much better designed; though I will also say that if I was building a 32 or 64-bit CPU today I'd likely implement the architecture to benefit from the existing tooling.
Mostly based upon the RISC-V ISA spec v2.0. Some updates have been made for v2.2
The RISC-V ISA has pursued minimalism to a fault. There is a large emphasis on minimizing instruction count, normalizing encoding, etc. This pursuit of minimalism has resulted in false orthogonalities (such as reusing the same instruction for branches, calls and returns) and a requirement for superfluous instructions which impacts code density both in terms of size and
mrocklin
/ numba-cuda-stencil.ipynb
Last active
July 5, 2022 16:03
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HackingGate
/ restore_last_git_modified_time.sh
Last active
May 13, 2024 12:59
Retrieve and set the last modification date of all files in a git repository. Solution for https://stackoverflow.com/a/55609950/4063462
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| #!/bin/sh -e | |
| OS=${OS:-`uname`} | |
| if [ "$OS" = 'Darwin' ]; then | |
| get_touch_time() { | |
| date -r ${unixtime} +'%Y%m%d%H%M.%S' | |
| } | |
| else | |
| # default Linux |
ignatev
/ openssl-cheat.sh
Created
November 13, 2018 13:48
— forked from alvarow/openssl-cheat.sh
OpenSSL and Keytool cheat sheet
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| # Generate a new key | |
| openssl genrsa -out server.key 2048 | |
| # Generate a new CSR | |
| openssl req -sha256 -new -key server.key -out server.csr | |
| # Check certificate against CA | |
| openssl verify -verbose -CApath ./CA/ -CAfile ./CA/cacert.pem cert.pem | |
| # Self Signed |
rhee
/ mpl_notokr.py
Last active
February 12, 2019 01:06
Finally, I succeeded to use custom matplotlib Korean font in non-system custom font directory, without installing... thanks https://stackoverflow.com/a/43647344
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| # coding: utf-8 | |
| # download font from: | |
| # https://noto-website-2.storage.googleapis.com/pkgs/NotoSansCJKkr-hinted.zip | |
| from __future__ import print_function | |
| import sys | |
| import os | |
| import matplotlib as mpl | |
| import matplotlib.font_manager as fm | |
| try: |
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