Running Flux locally on a Mac: install, commands and two models compared

Описание и применение

Руководство по установке и запуску модели Flux на Mac с Apple M5, включая сборку, загрузку весов и корректные параметры командной строки.

Задача

Users struggle to set up and run the Flux image generation model locally on macOS, encountering build, weight download, and runtime issues.

Результат

Local Flux runs in ~172 s per image on an M5 Mac, matching cloud speed but offering free, offline, private generation. The guide eliminates common pitfalls and provides reproducible commands.

Рабочий процесс

• Install Xcode command line tools and Homebrew
• Clone stable‑diffusion.cpp with submodules
• Build with CMake enabling Metal GPU
• Download four required weight files with curl and verify sizes
• Handle potential curl truncation and resume downloads
• Run sd‑cli with correct flags (‑M img_gen, model paths, prompt, cfg‑scale 1.0, vae‑on‑cpu, steps, resolution, seed, output)
• Adjust steps to 1–4 for optimal speed
• Use VAE‑on‑CPU flag to avoid NaN output
• Verify PNG size to detect VAE failures

Доказательства

Two places where people trip.

Источник

Flux is not one file. It's four, and all four are required.

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Without it you get a blank white frame.

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