python - ImportError: Could not find 'cudart64_100.dll

Question

I'm trying to install tensorflow-gpu==2.0.0-beta1 on my Windows 10 machine and got this error:

ImportError: Could not find 'cudart64_100.dll'. TensorFlow requires that this DLL be installed in a directory that is named in your %PATH% environment variable. Download and install CUDA 10.0 from this URL: https://developer.nvidia.com/cuda-90-download-archive

I made all things from:

• official documentation: https://www.tensorflow.org/install/gpu
• from here: https://medium.com/@teavanist/install-tensorflow-gpu-on-windows-10-5a23c46bdbc7
• Checked PATH variable: C:Program FilesNVIDIA GPU Computing ToolkitCUDAv10.0in
• also have CUDA_PATH : C:Program FilesNVIDIA GPU Computing ToolkitCUDAv10.0 in variables
• file C:Program FilesNVIDIA GPU Computing ToolkitCUDAv10.0incudart64_100.dll exists
• Did system restart

But error still occurs

How can I fix this?

Answer 1

The simplest way to fix is to install the latest ‘NVIDIA GPU Computing Toolkit’, because if it's not there, you'll be missing the 'cudart64_100.dll' library. The only issue is that the latest copy of CUDA has this particular library upgraded to 'cudart64_101.dll', while the latest TensorFlow still requires the older 'cudart64_100.dll'. Anyways, one way to deal with this issue is to install the latest CUDA + CUDA from September 2018 and then copy 'cudart64_100.dll' library from old install to the new one.

Or just visit my site where I linked the 'cudart64_100.dll' library downloaded from the CUDA Toolkit 10.0 (Sept 2018), to make it easier to copy it into the latest CUDA directory.

Here are some screenshots to illustrate the process: https://www.joe0.com/2019/10/19/how-resolve-tensorflow-2-0-error-could-not-load-dynamic-library-cudart64_100-dll-dlerror-cudart64_100-dll-not-found/