El Solitario

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Javier Alarcón

Infrastructure engineer specializing in networking, Linux systems, Kubernetes, and cloud architectures. Covers hardware, networking, observability, and engineering practices for production teams.
PyTorch Monarch architecture diagram running on AMD Instinct GPUs with ROCm
Noticias Tech

PyTorch Monarch Comes to AMD ROCm for Distributed Training

AMD and Meta ported PyTorch Monarch, the single-controller runtime for distributed training, to Instinct GPUs with ROCm. The system isolates failures by actor and lets the cluster keep training even if a node goes down, without restarting the entire job.

By Javier Alarcón, 1 month25 July, 2026 ago
3D rendering with native WebGPU in C++ on Windows, macOS, and Linux
Noticias Tech

Learn WebGPU for C++: the 5-language guide to native graphics

Learn WebGPU for C++ is open source documentation that teaches native 3D graphics programming in C++, using the same API that runs inside browsers. It covers Windows, macOS, and Linux with CMake, and lets you choose between the wgpu-native and Dawn backends. The same native code also compiles to WebAssembly with Emscripten.

By Javier Alarcón, 1 month23 July, 2026 ago
Zilog Z80 40-pin integrated circuit chip on a retro circuit board
Noticias Tech

The Zilog Z80 Turns 50: Here’s Its Internal Architecture

The Zilog Z80 turned 50 in July 2026, two years after Zilog discontinued the original chip. We look at its internal architecture, its origin tied to the Intel 8008, and how to program it today with free tools.

By Javier Alarcón, 1 month18 July, 2026 ago
QuadRF phased array radio on a Raspberry Pi 5, with antennas and FPGA board visible
Noticias Tech

QuadRF: Raspberry Pi 5 phased array radio detects drones and WiFi

QuadRF is a phased array radio built on a Raspberry Pi 5 that detects WiFi networks through walls and tracks drones in flight. Jeff Geerling tested it for a week and confirmed it works even in its pre-production version.

By Javier Alarcón, 2 months14 July, 2026 ago

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