RunningHub open-sources H3Lightning, speeding up MiniMax H3 video generation 12x
智东西 · wechat · 2026-09-11
- RunningHub open-sourced H3Lightning, cutting MiniMax H3's 5-second video generation from 348.8s to 28.7s — roughly 12x faster, 92% less waiting.
- Optimization stack: distilled model cutting steps from 50 to 9 (5.8x alone), plus SageAttention2, Cache-DiT, torch.compile, and a TP2+Ulysses4 parallel scheme for NVLink-free PCIe clusters (12% faster, 14GiB less VRAM).
- Integrated into SGLang's multimodalgen engine, tested on 8x RTX6000D, keeping BF16 precision; full deployment guide on GitHub.
- Over 1,000 creators have published 10,000 H3 workflows on RunningHub; its enterprise API handles tens of millions of daily calls.
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