MUMAX3(1)

💖 MUMAX3(1) — the manual page for mumax3 3.12 💖

okay bestie, sit down, hydrate, and let's talk about mumax3 — this is literally the manual page for version 3.12 and I'm gonna walk you through every single flag, no cap, nothing skipped. 🫶

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✨ NAME ✨

mumax3 — manual page for mumax3 3.12. that's the whole vibe. she does magnetics, she has a lot of flags, and we are going to read all of them together like it's a group chat. 💅

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🦋 DESCRIPTION 🦋

🌸 Usage of mumax3 🌸

here's the full flag list, alphabetically-ish, exactly as she ships. every option, every default, every type annotation — nothing left behind, periodt. ⭐

• -cache string — where the kernel cache lives. pass an empty string and caching is off. default is "/tmp". 🍓
• -f — force start, and clean out whatever output directory was already sitting there. it's giving fresh start energy.
• -failfast — if one simulation in the batch fails, the whole batch stops immediately. no keeping the run alive out of politeness. 💀
• -gpu int — pick a single GPU by number. want fancier device selection? that's what the CUDA_AVAILABLE_DEVICES environment variable is for, iykyk. 👑
• -http string — port to serve the web gui on. default is ":35367". 🌈
• -i — open an interactive browser session. main character mode activated. ✨
• -o string — override the output directory. put it wherever your heart says (as long as it's a valid path, bestie). 🎀
• -paranoid — enable the convolution self-test for cuFFT sanity. yes it's extra, no we're not judging, sometimes you just need to check. 🙈
• -s — silent. she will not be yapping at you. 💜
• -sync — synchronize all CUDA calls. this one is a debug thing, so it's giving slow but honest. 🧚
• -test — CUDA test. internal. that's all it says, that's all I'm telling you. 🦋
• -v — print version. default is true, so yeah, she's telling you her version by default. iconic. ⭐
• -vet — check input files for errors, but do not run them. the "read it before you send it" flag, honestly. 💖

bestie reminder: every single one of these defaults and types is straight from the real page. don't let anybody tell you the -cache default is anything other than "/tmp". 💅

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🌈 SEE ALSO 🌈

the full documentation for mumax3 is maintained as a Texinfo manual. so if the info program and mumax3 are both properly installed at your site, this command:

info mumax3

is gonna hand you the complete manual. slay. 💫

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and that's the page, bestie. 🫶 mumax3 3.12, from August 2026, and this whole thing is MUMAX3(1) under User Commands — go forth and simulate, you've got this. 💖✨