failed to build from source with CUDA architecture of 86

[jasonppy]

Bug Description

I tried to build from source by following the instructions in readme, at step
cmake .. -DCMAKE_BUILD_TYPE=Release -DFL_BUILD_ARRAYFIRE=ON -DCMAKE_CUDA_ARCHITECTURES=86, it gives an error

CMake Error at /usr/local/share/cmake-3.23/Modules/CMakeDetermineCUDACompiler.cmake:653 (message):
  The CMAKE_CUDA_ARCHITECTURES:

    86

  do not all work with this compiler.  Try:

    

  instead.
Call Stack (most recent call first):
  CMakeLists.txt:88 (enable_language)

Note that A40 has architecture 86.

Platform and Hardware

OS:
NAME="Ubuntu"
VERSION="20.04.3 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 20.04.3 LTS"
VERSION_ID="20.04"

CPU:
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit

gcc (Ubuntu 9.3.0-17 ubuntu1~20.04) 9.3.0
cmake version 3.23.0-rc1

Thanks!

[jacobkahn]

What's your CUDA version? Looks like you're trying to use an arch version which is newer than your CUDA version's nvcc will support.

[jasonppy]

Thanks for your quick reply! The CUDA version is 11.5

[kovalyshyn]

I have the same architecture 86. With CUDA 11.8 I haven't such issue.
But I have this issue #1033

[jacobkahn]

@jasonppy — this command works for me without issue:

cmake .. -DCMAKE_BUILD_TYPE=Release -DFL_USE_ONEDNN=OFF -DFL_USE_ARRAYFIRE=ON -DFL_ARRAYFIRE_USE_CUDA=ON -DCMAKE_CUDA_ARCHITECTURES=86

a few odd things about yours -- FL_BUILD_ARRAYFIRE isn't a valid build option -- you need FL_USE_ARRAYFIRE. I'll check the docs to see if that's a mistake, but I'm not sure why you'd have a problem. I also tested this with CMake 3.25 rc1.

[jasonppy]

Thanks for your reply. The command in your reply leads to the same error

[jacobkahn]

@jasonppy ah, you're on 0.3.2 — looks like new versions of CMake that set the CUDA arch flag in the way they do don't work with the copied CUDA shims.

Can you checking main and try to build from source, or is there a particular reason you need 0.3.2?

[jasonppy]

are you referring to #1033 ? This is not me...
I'm always on the latest commit.