OSX 10.13.6, cudaGetDeviceCount returned 100, no CUDA-capable device is detected

Accelerated Computing CUDA CUDA Setup and Installation
#1

I have followed the instructions here https://docs.nvidia.com/cuda/cuda-installation-guide-mac-os-x/index.html to install CUDA on a MacBookPro.

I am also able to build the examples. When running the examples, CUDA is not able to find a GPU, but reports “cudaGetDeviceCount returned 100” instead.

➜  release ./deviceQuery
./deviceQuery Starting...

 CUDA Device Query (Runtime API) version (CUDART static linking)

cudaGetDeviceCount returned 100
-> no CUDA-capable device is detected
Result = FAIL
➜  release

Where should I look to trouble shoot this issue?

My setup is:
MacBookPro Mid 2012 Retina
OSX High Sierra, 10.13.6
NVIDIA GeForce GT 650M 1024 MB
CUDA Driver Version: 418.163
CUDA 10.1.105 Toolkit

  1. Installation as per this page: https://docs.nvidia.com/cuda/cuda-installation-guide-mac-os-x/index.html
  2. An OSX related (apparently) tweak as described here, post #3 onwards: https://devtalk.nvidia.com/default/topic/1048339/cuda-setup-and-installation/cuda-driver-410-130-error-quot-update-required-quot-mac-os-10-11-6-/
  3. System Preferences -> Energy Saver -> Automatic graphics switching: unchecked
  4. kernel extension reports started: 
➜  release kextstat | grep -i cuda
  169    0 0xffffff7f83b66000 0x2000     0x2000     com.nvidia.CUDA (1.1.0) 50F4AE08-3D20-3B13-B36D-439DEEB1D49C <4 1>
➜  release

I appreciate any ideas, insight or help in finding steps forward,
-mikko

#2

I just updated to CUDA 10.1.168. Toolkit and Drivers alike installed from cuda_10.1.168_mac.dmg. Still no luck in getting deviceQuery to recognize the Geforce GT 650M.

➜  release ./deviceQuery
./deviceQuery Starting...

 CUDA Device Query (Runtime API) version (CUDART static linking)

cudaGetDeviceCount returned 100
-> no CUDA-capable device is detected
Result = FAIL
➜  release

On the positive side, the CUDA Preferences within System Preferences did actually update properly without the need for any plist -tweaks!

Any ideas where this is getting wrong or where I have missed something? Should the “version (CUDART static linking)” report something more specific, perhaps?