In February 2025, Andrej Karpathy posted a reflection on X that resonated widely across the programming community^{Read More}

Zsh is the shell; Oh My Zsh is the framework that manages your Zsh configuration. This guide shows a minimal and reliable setup on Ubuntu or Debian, then adds a small optional section for common...

Writing papers on a remote server is common in academic and HPC environments, but getting a smooth LaTeX compilation loop working inside VS Code requires a few non-obvious steps. This guide cove...

This guide documents how to set up the Continue extension in VS Code to use a self-hosted LLM served via an OpenAI-compatible API (e.g., vLLM, SGLang).

This guide documents how to set up a local Jekyll development environment for this GitHub Pages site on a fresh Ubuntu machine.

We review the electromagnetic field theory of circular waveguide, particular about the TE and TM mode. Most part of the discussion comes from David M. Pozar’s book.

This post is about S-parameter of networks.

This post is about mathematical formulas for my reference.

   Previously, we discussed about the CUDA language to increase performance of code by GPU. We give a very simple example to acceralte code of drawing a Mandelbrot graph. However, even for this ...

   Recently, I was assigned a task to accelerate a program by using a GPU accelerator. After analyzing the original Python program, namely the rigorous coupled wave analysis (RCWA) method, I fou...