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This post analyzes matrix multiplication performance on Intel Xeon CPUs and NVIDIA V100 GPUs, comparing results across C++, OpenMP, CUDA, MPI, NVSHMEM, and Python frameworks like NumPy and CuPy.

Recently, I undertook a rather challenging task: to fully reproduce a paper titled “Physics-informed deep generative learning for quantitative assessment of the retina” on a High-Performance Computing (HPC) cluster. The core software repository for this paper is RetinaSim. The goal was not merely to run the code, but to completely replicate its complex software stack and simulation workflow in a strictly managed computational environment, one that likely differed significantly from the original developers’. This blog post will chronicle my entire journey from the initial attempt to the final successful run, focusing on my chain of thought as I diagnosed and resolved a series of tricky issues. ...

This post details how to build an interactive urban planning visualization system using Python, Geopandas, and Folium by integrating housing pipelines, crime data, and socioeconomic metrics.

Learn how to reverse-engineer a university’s private timetable API using browser developer tools and write a Python script to convert the JSON data into a universally importable iCalendar (.ics) file for your personal calendar.

How to build a robust video downloader from scratch with TypeScript, Node.js, and Playwright, capable of handling complex anti-scraping mechanisms, dynamic content loading, and network race conditions.

Weak Vertices The Problem In graph theory, the structural integrity of a network can often be analyzed by identifying fundamental shapes within it, such as triangles. A triangle provides rigidity and is a common motif in many applications. This problem asks us to identify vertices that are not part of any triangle. A vertex i is defined as being part of a triangle if it has two distinct neighbors, j and k, which are also neighbors of each other. Our task is to find all vertices that do not satisfy this condition, which the problem statement refers to as “weak vertices.” The graph is given to us in the form of an adjacency matrix. ...

Recount Problem The recent schoolboard elections were hotly contested: a proposal to swap school start times for elementary and high school students, a controversial new dress code proposal that bans athletic clothes in school, and a proposal to raise real-estate taxes to pay for a new football practice facility, and the list goes on and on. It is now hours after the polls have closed and a winner has yet to emerge! ...

A deep-dive investigation into the Arch Linux tool debtap reveals how a well-intentioned typo fix accidentally activated a catastrophic rm -rf bug that deleted all files in the current working directory.

Detailed troubleshooting process for fixing a silent digital microphone on a Lenovo ThinkBook 16 G7+ ASP (AMD Ryzen AI 9) laptop running Linux, primarily resolved by adding the kernel module parameter options snd_sof_amd_common enable_pdm=1.

Uncover techniques to demystify complex Anki card templates using Puppeteer and JSDOM for accurate data extraction from dynamically rendered content and facilitate migration.