NVIDIA CompileIQ
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- PyTorch Helion taps Nvidia CompileIQ to tune ptxas compiler controls
A PyTorch blog post says Helion's kernel autotuner previously searched only tile shapes, warp counts, pipeline stages and memory access strategy, and can now also search ptxas compiler controls such as register allocation policy, fine-grained instruction scheduling and code-generation heuristics through Nvidia's CompileIQ, packaging results as portable Advanced Control Files (ACFs). In one example on a fixed, ahead-of-time-tuned NVFP4 GEMV kernel, an evolutionary CompileIQ search over eight generations with a pool of 15 candidates on GB200 cut execution time from 0.0971 ms to 0.0928 ms, a 1.047x (4.7%) speedup; the post stresses the gain is workload-specific and depends on shapes and architecture. Helion is open source under the PyTorch Foundation, while CompileIQ is proprietary but free to use under Nvidia's license, and the ACF files it produces are freely distributable.
PyTorch Blog · 🔥 0
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