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Learning how to Forget: Fine-tuning for Long-Context Sparse Attention

Research Efficiency & Systems

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Merged summary

TL;DR - This paper introduces a hardware-efficient method for fine-tuning language models with sparse attention, allowing models to co-adapt to arbitrary KV-cache policies for long-context inference. It can outperform models trained with exact attention while running on a single 40 GB Nvidia A100 GPU.

  • Supports any KV-cache selection or compression policy.
  • Provides an optimized H2O sparse-attention implementation with dedicated scaled dot-product attention kernels.
  • Reduces the hardware requirements of long-context fine-tuning compared with exact-attention sequence parallelism.
  • Releases the methods through KeysAndValues, an open-source library for long-context inference and fine-tuning.

Sources (1)

Learning how to Forget: Fine-tuning for Long-Context Sparse Attention

arXiv cs.CL Matthias Seeger, Zeyu Zhang, Vihang Patil, Konstantinos Benidis, Sebastian Schelter 2026-08-20 arXiv:2608.19920
Public signals Hugging Face upvotes 1
Providers: Hugging Face · Upvotes 1 OpenAlex · N/A Publisher · N/A Semantic Scholar · N/A X · N/A Fetched 2026-09-22 14:33:18.266127 UTC

TL;DR - This paper introduces a hardware-efficient method for fine-tuning language models with sparse attention, allowing models to co-adapt to arbitrary KV-cache policies for long-context inference. It can outperform models trained with exact attention while running on a single 40 GB Nvidia A100 GPU.

  • Supports any KV-cache selection or compression policy.
  • Provides an optimized H2O sparse-attention implementation with dedicated scaled dot-product attention kernels.
  • Reduces the hardware requirements of long-context fine-tuning compared with exact-attention sequence parallelism.
  • Releases the methods through KeysAndValues, an open-source library for long-context inference and fine-tuning.
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