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Spectrum MiniMax H3 v0.1.2

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@github-actions github-actions released this 04 Aug 00:26
v0.1.2
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Spectrum MiniMax H3 v0.1.2

Adds Spectrum forecasting support for ComfyUI's RES multistep sampler family.

Added

  • Support sample_res_multistep.
  • Support the CFG++, ancestral, and ancestral CFG++ RES multistep variants.
  • Cover the sampler allowlist with focused regression tests.

Highlights

  • Forecasts selected post-transformer H3 features while preserving the native current-step output heads, reconstruction, sigma mapping, and return structure.
  • Keeps runtime and history state isolated per model clone and rolls incomplete split-branch transactions back to a complete native step.
  • Supports native Euler, Euler ancestral, and RES multistep sampling, with explicit native fallback for unsupported samplers, incompatible topology, invalid forecasts, and multi-GPU parallel sampling.
  • Bounds retained history on CPU and streams forecast accumulation in chunks to avoid persistent full-feature FP32 coefficient or right-hand-side tensors.
  • Leaves the separate FLUX-focused ComfyUI-Spectrum-Proper repository unchanged.

Validation

  • GitHub Actions passes against native ComfyUI commit e377e263049f9338b4d12a3dd417b36ae62948ff.
  • Automated tests cover forecasting mathematics, scheduling, rollback, clone isolation, the actual ComfyUI loader shape, native-path equivalence, and zero transformer-block execution on forecast steps.
  • CodeRabbit review feedback was evaluated and all review threads were resolved.

Current limits

Full MiniMax H3 checkpoint generation, reference modes, decoded output quality, audiovisual synchronization, long-duration memory use, VRAM/RSS peaks, and end-to-end speedup remain unverified. Presets and performance expectations are provisional.

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