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CUDA: Volta architecture

   February 27, 2021  1 Comment on CUDA: Volta architecture

The Volta 7.2 architecture for Jetson Xavier NX cannot be detected by OpenCVDetectCUDA cmake script.

  • OpenCV => 4.4+
  • Operating System / Platform => Ubuntu 18 arm64
  • Compiler => gcc

opencv/cmake/OpenCVDetectCUDA.cmake

Line 101
in
31619fa

set(_arch_volta “7.0”)

If the architecture 7.2 is added to the OpenCVDetectCUDA.cmake script as follows:

set(_arch_volta "7.0;7.2")

then, it detects the architecture without any problems.

Full dicussion on github.com

1 possible answer(s) on “CUDA: Volta architecture”

  1. For record, here’s my command that I use daily.

    cmake -DOPENCV_EXTRA_MODULES_PATH=/home/nvidia/opencv_contrib/modules \
 -DBUILD_EXAMPLES=true \
 -DOPENCV_ENABLE_NONFREE=true \
 -DWITH_CUDA=ON ..

    and OpenCV detects the native CC correctly on Xavier NX.

    -- Detected processor: aarch64
 :
-- CUDA detected: 10.2
-- CUDA NVCC target flags: -gencode;arch=compute_72,code=sm_72;-D_FORCE_INLINES
 :
-- General configuration for OpenCV 4.5.1-pre =====================================
--   Version control:               4.5.0-312-g31619faa70
 :
--   NVIDIA CUDA:                   YES (ver 10.2, CUFFT CUBLAS)
--     NVIDIA GPU arch:             72
--     NVIDIA PTX archs: