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abstract indexed · arXiv 2609.30059 · updated 2026-10-18

KernelOPT: Dispatch-Aware Agentic Search for GPU Kernel Optimization

First page of KernelOPT: Dispatch-Aware Agentic Search for GPU Kernel Optimization
From the original paper · arXiv 2609.30059Page 1. Select the image to read the PDF.

The method replaces manual tuning of torch.compile-generated Triton sub-kernels with five profiling-guided LLM agents that rewrite kernels while preserving vendor library calls, then re-stitch and verify the model end-to-end through a four-gate cascade. Its costs are LLM API or inference spend for the search agents, profiling and multi-seed verification compute on a local GPU, and the engineering complexity of integrating a multi-agent pipeline into the build process; the claimed gains are benchmark geomeans, not guarantees for a given production model. It can fail to find any passing candidate (improving only 12 of 50 Level-3 problems), and correctness or performance regressions may slip through on workloads whose numerical behavior differs from the verification suite, though the baseline-preserving fallback limits downside.

For solo builders

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

Profiling shows attention computation is a bottleneck in your self-hosted service.

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.

Download test plan ↓

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Abstract-level screening only. Risks and infrastructure may not have been evaluated. This recommendation is not a reproduced result.
minimum test setup
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published evidence setup
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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
Multi-agent LLM optimization of compiler-generated Triton kernels
published
2026-09-24

The approach is directly runnable on a single 24 GB GPU with API-based LLMs and carries a safe fallback, but its benchmark-reported speedups must be validated on the reader's own models before production adoption.

About the technical core

Equations have not been fetched yet.

When reading the methods, identify the rule, algorithm, or evaluation protocol that produces the claimed change. An equation is useful here only if it explains that mechanism.

Inspect the original paper

Claims and evidence

A claim is source-linked only when the PDF page and matching excerpt are available.

  1. claim 01Paperraft inference
    Read the brief interpretation

    The method replaces manual tuning of torch.compile-generated Triton sub-kernels with five profiling-guided LLM agents that rewrite kernels while preserving vendor library calls, then re-stitch and verify the model end-to-end through a four-gate cascade. Its costs are LLM API or inference spend for the search agents, profiling and multi-seed verification compute on a local GPU, and the engineering complexity of integrating a multi-agent pipeline into the build process; the claimed gains are benchmark geomeans, not guarantees for a given production model. It can fail to find any passing candidate (improving only 12 of 50 Level-3 problems), and correctness or performance regressions may slip through on workloads whose numerical behavior differs from the verification suite, though the baseline-preserving fallback limits downside.

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

    Inspect the source
  2. claim 02Paperraft inference

    Geometric mean speedups over torch.compile of 1.40x (KernelBench Level 1, 51/100 problems improved), 1.15x (Level 2), and 1.07x (Level 3), with fallback to the compiler baseline when verification fails.

    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.

The downloadable skill includes SKILL.md and evidence.json, with recorded findings and unanswered checks. TRY-IT.md adds a product test plan and a blank results sheet.

A reading aid for your agent. Findings still need validation.

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Provisional research brief updated 2026-10-18. Paperraft has not reproduced this experiment.

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arXiv 2609.30059

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