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abstract indexed · arXiv 2610.30951 · updated 2026-10-23

OpenAttention: One Percent Is Enough with Tail Proxies

First page of OpenAttention: One Percent Is Enough with Tail Proxies
From the original paper · arXiv 2610.30951Page 1. Select the image to read the PDF.

Replaces dense attention over the full KV cache with top-k key selection plus a count-aware mean proxy token that folds in the unread tail, using training-free query-geometry clustering, error-based read allocation (ErrorGate), and a custom flash kernel. Costs: an additional clustering/selection pass per decode step, a custom kernel dependency, and residual approximation error bounded by the proxy's fidelity to the true tail distribution. Can fail when the selector misses heavy-hitter keys whose mass the mean proxy poorly represents, on workloads with attention patterns unlike the long-context benchmarks used, or when deployment targets hardware the custom kernel does not support.

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A possible application for this research area. Paper-specific feasibility still needs a full-paper review.

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What you would change

Check the supported GPU, tensor shapes, and precision, then replace only the relevant kernel.

Try the idea on your product

A proposed first test. Set your budget and success criteria before running it.

Check the supported GPU, tensor shapes, and precision, then replace only the relevant kernel.

Compare against

The existing kernel inside the same complete serving pipeline.

  1. Locate the paper's implementation and check its license, model support, data needs, and hardware requirements. Stop here if you cannot obtain the required artifacts.
  2. Save a small set of representative product tasks and expected outcomes. Keep evaluation tasks out of any training or tuning, and choose quality and cost limits before running.
  3. Run the baseline and the proposed change on identical inputs. Keep other settings fixed and repeat paired runs to expose variation.
  4. Save per-task outputs, failures, timings, and all usage costs. Review regressions before expanding the test.

What to measure

Numerical differences, end-to-end latency, throughput, and memory at realistic shapes.

When to keep it

Keep the change only if it meets your preselected quality and latency limits and improves the metric you care about after setup and operating costs. Otherwise retain the baseline. This is an exploration plan, not a validated recommendation.

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source-linked claims
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exposure checks
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Why it was shortlisted

The technical change, research area, and reason it entered the archive.

recommendation
test
research area
attention and kernels
technical change
Sparse attention with count-aware mean tail proxy
published
2026-10-22

The method is training-free and targets exactly the reader's single-GPU inference setting, but the claimed 1% read accuracy and 10x kernel speedup require validation on the reader's models, context lengths, and hardware before production adoption.

About the technical core

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Claims and evidence

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  1. claim 01Paperraft inference
    Read the brief interpretation

    Replaces dense attention over the full KV cache with top-k key selection plus a count-aware mean proxy token that folds in the unread tail, using training-free query-geometry clustering, error-based read allocation (ErrorGate), and a custom flash kernel. Costs: an additional clustering/selection pass per decode step, a custom kernel dependency, and residual approximation error bounded by the proxy's fidelity to the true tail distribution. Can fail when the selector misses heavy-hitter keys whose mass the mean proxy poorly represents, on workloads with attention patterns unlike the long-context benchmarks used, or when deployment targets hardware the custom kernel does not support.

    This is a Paperraft inference. It is not pinned to a verified PDF passage.

    Inspect the source
  2. claim 02Paperraft inference

    Decode attention stage runs 10x faster than dense attention at a 1% read; retains 99% of dense accuracy on RULER-32K HARD with Llama-3.1-8B.

    This is a Paperraft inference. It is not pinned to a verified PDF passage.

    Inspect the source

Exposure map

Author findings, Paperraft interpretations, and the next check. Missing analysis never counts as evidence of safety.

quality

Still unknown

Which tasks improve, and which regress against the baseline?

compute and memory

Still unknown

What memory, hardware, and total compute does the complete method require?

latency

Still unknown

Are startup time, typical response time, and slow requests measured separately?

operations

Still unknown

What must be monitored, maintained, and rolled back?

software compatibility

Still unknown

Does the implementation support your model, runtime, and hardware?

security

Still unknown

What new data access, permissions, or trust boundaries does it introduce?

data and training

Still unknown

What data preparation or training is required, and is it included in the cost?

reproducibility

Still unknown

Are code, versions, inputs, and evaluation scripts available?

Continue the investigation

A reading guide for attention and kernels.

Editorial prompts, not findings from this paper or a validated test plan. Detailed analysis is still pending for the topics below.

What to inspect

Which tensor shapes, precision settings, and hardware support the reported kernel result?

Plan a fair comparison

Can you compare against the existing implementation on the same inputs, checking numerical error and end-to-end time?

Questions for adoption

Are the gains limited to a microbenchmark, or do they appear in the complete model workload?

Read the paper with these questions

Inside the paper

Preview the first 3 pages of the original PDF. Click the stack to turn the page.

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Provisional research brief updated 2026-10-23. Paperraft has not reproduced this experiment.

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arXiv 2610.30951

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