"ptx (-ptx) is not allowed" error when CUDA_ARCHITECTURES=all

[Daniel Utt]

When building the next_release branch on Windows setting CMAKE_CUDA_ARCHITECTURES=all I encounter the following error:

[1/28] Building CUDA object devices\rtx\CMakeFiles\AmbientOcclusion_ptx.dir\renderer\AmbientOcclusion_ptx.ptx
...
nvcc fatal   : Option '--ptx (-ptx)' is not allowed when compiling for multiple GPU architectures

This can be circumvented setting CMAKE_CUDA_ARCHITECTURES=native, which is fine for testing, however, CMAKE_CUDA_ARCHITECTURES=all would be required for deployment.

CMake Command

PS ~> cmake -G "Ninja" `
    -DCMAKE_INSTALL_PREFIX="../../anari" `
    -DCMAKE_BUILD_TYPE=Release `
    -Danari_DIR="../../anari/lib/cmake/anari-0.8.0" `
    -DOptiX7_ROOT_DIR="../../NVIDIA Corporation/OptiX SDK 7.6.0" `
    -DVISRTX_BUILD_INTERACTIVE_EXAMPLE=OFF `
    -DCMAKE_CUDA_COMPILER="../../NVIDIA GPU Computing Toolkit/CUDA/v12.3/bin/nvcc.exe" `
    -DVISRTX_BUILD_GL_DEVICE=OFF `
    -DCMAKE_CUDA_ARCHITECTURES=all `
    -DVISRTX_BUILD_EXAMPLES=OFF `
    ..

System Information

• Windows 11
• MSVC: 14.37.32822:

  Microsoft (R) C/C++ Optimizing Compiler Version 19.37.32825 for x64
  Copyright (C) Microsoft Corporation.  All rights reserved.
  

• nvcc --version:

  Copyright (c) 2005-2023 NVIDIA Corporation
  Built on Fri_Sep__8_19:56:38_Pacific_Daylight_Time_2023
  Cuda compilation tools, release 12.3, V12.3.52
  Build cuda_12.3.r12.3/compiler.33281558_0
  

• OptiX SDK 7.6.0

[Jefferson Amstutz]

I think this is addressed now on next_release. Please reopen if you continue to have issues, thanks!