build: Update C++ standard from c++17 to c++20 (#461) - #462
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Upstream PyTorch raised ATen's minimum required C++ standard from 17 to 20 (pytorch/pytorch#178150), which broke the pytorch_backend build. Align this repo's CXX_STANDARD/CUDA_STANDARD default with that floor for consistency across the stack. TRI-1877
chyunsu3
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Sep 10, 2026
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Upstream PyTorch raised ATen's minimum required C++ standard from 17 to 20 (pytorch/pytorch#178150), which broke the pytorch_backend build. Align this repo's CXX_STANDARD/CUDA_STANDARD default with that floor for consistency across the stack.
TRI-1877