Fast H3 implementation for Metal. Enjoy, modify, and so forth: https://t.co/FuyzEtUW7S Contains code from @liuliu which is welcomed in taking back whatever parts he likes for @drawthingsapp in case there are H3 plans there.
AI Weekly's analysis
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- h3.c is a native Metal implementation of MiniMax H3 multimodal generation for Apple Silicon, with M3 and M5 Max as the tested platforms.
- The transformer checkpoint from Hugging Face is about 33 GB, and peak physical memory hits approximately 40 GB during end-to-end generation.
- On M5 Max, the fast preset renders 512×512 in about 16.69 seconds; the aggressive four-step path finishes in roughly 3.5 seconds.
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