Bryce Mecum amoeba

This is a set of examples demonstrating whether various Python and R dataframe libraries and OLAP query engines preserve (or do not preserve) the original order of the records in the data.

Example data

The examples all use this dataset describing the 28 times when a person walked on the moon:

year	mission	name	minutes
1969	Apollo 11	Neil Armstrong	151
1969	Apollo 11	Buzz Aldrin	151

Anti-hype LLM reading list

Goals: Add links that are reasonable and good explanations of how stuff works. No hype and no vendor content if possible. Practical first-hand accounts of models in prod eagerly sought.

Foundational Concepts

Pre-Transformer Models

How to deal with the `SystemRequirements: C++11` NOTE when running `R CMD check`

For the development version of R-devel which will become 4.3.0, there is a new warning in R CMD check that comes up for some packages:

* checking C++ specification ... NOTE
  Specified C++11: please drop specification unless essential

ChatGPT Resources

Context

ChatGPT appeared like an explosion on all my social media timelines in early December 2022. While I keep up with machine learning as an industry, I wasn't focused so much on this particular corner, and all the screenshots seemed like they came out of nowhere. What was this model? How did the chat prompting work? What was the context of OpenAI doing this work and collecting my prompts for training data?

I decided to do a quick investigation. Here's all the information I've found so far. I'm aggregating and synthesizing it as I go, so it's currently changing pretty frequently.

Model Architecture

Vagrant and VMWare Fusion 13 Player on Apple M1 Pro

This document summarizes notes taken to make VMWare Fusion 13 Player work on Apple M1 Pro. It builds upon a previous (deprecated) document based on VMWare Tech Preview 21H1

VMWare Fusion 13 was released on November 17, 2022 and Fusion 13.5 on October 19, 2023

Created on: November 20, 2022

Updated on: June 1, 2024

Key Points

In general, binaries built just for x86 architecture will automatically be run in x86 mode
You can force apps in Rosetta 2 / x86 mode by right-clicking app, click Get Info, check "Open using Rosetta"
You can force command-line apps by prefixing with arch -x86_64, for example arch -x86_64 go
Running a shell in this mode means you don't have to prefix commands: arch -x86_64 zsh then go or whatever
Don't just immediately install Homebrew as usual. It should most likely be installed in x86 mode.

Homebrew

Not all toolchains and libraries properly support M1 arm64 chips just yet. Although

Change Apple OS X Dock size from Apple Terminal

defaults write com.apple.dock tilesize -int 32; killall Dock

32 is icon size

Using `<details>` in GitHub

Suppose you're opening an issue and there's a lot noisey logs that may be useful.

Rather than wrecking readability, wrap it in a <details> tag!

<details>
 Summary Goes Here

	## Install perf in docker container
	### ubuntu 18.4
	### kernel 4.14.173-137.229.amzn2.x86_64

	docker exec -it {containerid} sh
	wget https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.14.173.tar.xz && tar -xf ./linux-4.14.173.tar.xz && cd linux-4.14.173/tools/perf/ && apt -y install flex bison && make -C . && make install
	./perf
	./perf list
	./perf bench mem all