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Placing 5th in the GPU MODE QR Decomposition Competition: Optimization Techniques and Lessons Learned

By

Michael Lutz

4h ago· 24 min readenInsight

Summary

A detailed technical blog post about placing 5th in the GPU MODE qr_v2 competition, which focused on optimizing QR decomposition on GPUs. The author walks through their iterative optimization journey across ~1,900 experiments, covering linear algebra fundamentals, CUDA kernel engineering, agent swarm automation, and various performance tricks. The piece combines educational explanations of QR decomposition math with practical GPU optimization techniques and competition strategy insights.

Source

Twitter / XPlacing 5th in the GPU MODE QR Decomposition Competition: Optimization Techniques and Lessons Learnedml-mike.com

Key quotes

· 3 pulled
QR decomposition takes a matrix and splits it into two pieces: an orthonormal matrix Q, and an upper-triangular matrix R.
How I placed 5th in the GPU MODE qr_v2 competition with common sense engineering, linear algebra tricks, an agent swarm, and a dream.
Here's what the SOTA frontier looked like over the course of roughly 1,900 experiments.
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How I placed 5th in the GPU MODE qr_v2 competition with common sense engineering, linear algebra tricks, an agent swarm, and a dream.

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