White Circle just unveiled Halo, an open-source, distributed post-training framework for…
This is a AI post classified by Jev as AI infra & evals (a launch), kept by the AI Radar because it carries real work, not commentary.
White Circle just unveiled Halo, an open-source, distributed post-training framework for models that have outgrown Huggingface TRL but don't need the full Megatron stack. On 8× B300, Halo delivers up to ~2.8× the training throughput of stock Huggingface Transformers Reinforcement Learning (2.7× at 25% less peak memory when both sides shard ZeRO-3), with larger margins over the other frameworks benchmarked. you can run multi-turn RL directly on Hugging Face models, from one GPU to a cluster. Rather than reimplementing model architectures, Halo wraps existing Transformers models with expert,
Posted by Rohan Paul (157.8k followers) 1 h ago · 6 likes · 2k views · view the original post on X. Kept by the AI Radar as AI infra & evals. Tools mentioned: halo.
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