AI article
Undefined type Float8_e4m3fn on Apple Silicon: BF16 and GGUF Workarounds for FP8 Models
Community description: Two FP8 image models crashed with Undefined type Float8_e4m3fn on an Apple Silicon Mac, and each...
Dev.to | Sep 14, 2026 | ACS Developer
Automated excerpt
Case 1: Swap only the main model for BF16 (FLUX. 2) FLUX. 2 ships an official BF16 build, so I replaced only the diffusion model itself with the BF16 version. The FP8 build of Krea 2 Turbo failed with the same Float8_e4m3fn error. Undefined type Float8_e4m3fn is an unsupported dtype.
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