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About this paper
Mark W. Stephenson, Ram Rangan
AZP, an automatic compiler optimization by NVIDIA, specializes shader code for frequently zero-valued operands, building on a previously manual technique. It achieves an average 3.5% frame-rate improvement and 16.4% speedup in targeted shader regions across modern gaming applications.
Key insights
- Many gaming workloads contain patterns where operands frequently hold zero values, which can be exploited for computational simplification (e.g., 0 x = 0).
- Automating profile-guided value specialization allows for wider application of performance optimizations without requiring manual developer intervention.
- Careful management of warp convergence using SIMT-wide vote operations is essential for effective GPU shader specialization without incurring performance penalties.
Summary by alphaXiv.
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