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metal : add sparse FA - #28098

Merged

ggerganov merged 10 commits into

gg/metal-fa-sparse

Sep 3, 2026

Commits on Sep 3, 2026
- metal : support n_kv_max sparse mask hint in flash attention vec kernel
  ggerganov
  committed
  6003307
- metal : fix sparse flash attention row addressing
  ggerganov
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  619e14f
- cont : use sparse vec FA for prefill
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  17f6ff3
- metal : single-pass flash attention sparse index compaction
  ggerganov
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  f428016
- tests : add perf cases for sparse flash attention prefill
  ggerganov
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  35eee11
- qwen4 : enable sparse attention
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  abad554
- cont : adjust nsg
  ggerganov
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  8b2442b
- cont : sync test-backend-ops
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  8e215df
- cont : disable Qwen4 for now
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  46437c9
- cont : clean-up + tests
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  1d818e8