Can Standard C++ Replace CUDA for GPU Acceleration? - Elmar Westphal - CppCon 2025

Описание: https://cppcon.org
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Can Standard C++ Replace CUDA for GPU Acceleration? - Elmar Westphal - CppCon 2025
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On top of the woes of multi-threaded programming itself, coding for GPUs used to be about dealing with kernels, separate memory domains, warps, blocks and other strange things. Later, life became easier and you could sprinkle in a bunch of pragmas, hoping that your favorite language extension would deal with all of this for you, and better memory model abstractions came up that were less painful to deal with. In recent years, new drivers (seemingly) levelled the boundaries between memory domains and new compilers allow us to deploy code to the GPU using standard C++ execution policies. The performance of the generated code is often similar to that of its CUDA-C++ counterpart. Of course there is no magic bullet to shoot at your (legacy) code and there are caveats, but come and see how using standard parallelism (also) for programming GPUs makes it a lot easier to write portable and more future-proof high-performance C++ code.

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Slides: https://github.com/CppCon/CppCon2025/...

Work at Hudson River Trading (HRT): https://tinyurl.com/safxfctf
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Elmar Westphal

Elmar Westphal has been working as a programmer and cluster architect at Forschungszentrum Juelich for more than 15 years. He's most recently ported simulation programs from different fields of computational physics to single- and multi-GPU systems and developed CUDA-based building blocks, libraries, and applications, mostly for molecular dynamics and micromagnetism simulations.
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CppCon is the annual, week-long face-to-face gathering for the entire C++ community. The conference is organized by the C++ community for the community. You will enjoy inspirational talks and a friendly atmosphere designed to help attendees learn from each other, meet interesting people, and generally have a stimulating experience. Taking place this year in Aurora, Colorado, near the Denver airport, and including multiple diverse tracks, the conference will appeal to anyone from C++ novices to experts.
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