vLLM details Step 5 Preview's region-based sparse attention: score summaries, then attend
vllm_project · x · 2026-10-15
- Step 5 Preview's sparse attention starts with region summaries: an indexer scores the summaries, selects regions, then attends only to the selected tokens; unfinished regions stay in the local window.
- The backbone combines sliding-window and sparse attention with MoE and multi-token prediction, alongside a vision processing path.
- Part of vLLM's official thread on the Day-0 Step 5 Preview integration.
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