Bell’s inequality is one of those topics that appears very naturally in courses on quantum mechanics or quantum information. The calculation is standard. The conclusion is much less standard.
It is tempting to summarize Bell experiments by saying that “local realism is violated.” That sentence is not wrong, but it hides the part that I find interesting. What exactly is being violated? Does the experiment prove that locality is false? Does it prove that realism is false? Or is the right conclusion something more careful?
Building a Local LLM Stack on DGX Spark # Our lab recently got an NVIDIA DGX Spark, and since nobody had set anything up on it yet, I ended up being the one to build out the local LLM stack. The goal was a Slack bot that reads arXiv links, summarizes them with a locally-running LLM, and stores papers in RAGFlow so you can ask questions about them later. Here are my notes on how I got there and what tripped me up along the way.
I cleaned up an Ansible playbook for provisioning a small Ubuntu-based Slurm cluster and put the sanitized version on GitHub.
Repository:
shota-ke/slurm_ansible The playbook started as infrastructure code for a local lab environment. Before making it public, I removed site-specific inventories, host variables, generated hardware facts, SSH keys, Munge keys, local environment files, and old reference material. The repository now keeps those files out of Git and includes a Docker Compose environment for validating the roles safely.
Scope # The repository provisions:
LaTeXiT is a small macOS application that I find very convenient when I want to typeset a single equation and paste it into slides, notes, or figures. The annoying part is that LaTeXiT expects ordinary LaTeX-related commands such as pdflatex, ps2pdf, and gs to be available on the host machine.
I wanted to keep my host environment light and use the same LaTeX environment that I already manage through Docker. This note describes the small wrapper-script setup I used to make LaTeXiT call LaTeX tools inside a Docker container.
