TensorFlow Error: 'cudart64_101.dll' Not Found - Troubleshooting Guide

The error message 'W tensorflow/stream_executor/platform/default/dso_loader.cc:64] Could not load dynamic library 'cudart64_101.dll'; dlerror: cudart64_101.dll not found' indicates that TensorFlow is unable to locate the CUDA runtime library. This library is crucial for enabling GPU acceleration in TensorFlow.

To fix this issue, ensure the following:

1. CUDA Runtime Installation: Make sure the CUDA runtime library is installed on your system. If not, download and install the appropriate version of the NVIDIA CUDA Toolkit from the official NVIDIA website.

2. Environment Variables: Check if the library path is correctly set in your system's environment variables. The specific path will depend on your CUDA installation location.

3. GPU Compatibility: Confirm that your GPU is compatible with the version of CUDA you are using. Refer to NVIDIA's documentation for compatibility details.

4. Disabling GPU Support (If Applicable): If you are running TensorFlow on a system without a GPU, disable GPU support by setting the environment variable CUDA_VISIBLE_DEVICES to an empty string. This forces TensorFlow to utilize the CPU for computations.

The exact steps to resolve this error may vary based on your system configuration. For more detailed instructions and guidance, consult the official TensorFlow documentation and relevant community forums.