TensorFlow – failed call to cuInit: CUDA_ERROR_UNKNOWN

Last updated on December 15th, 2016

Scenario: You’re trying to get your GPU to work in TensorFlow on a Ubuntu Laptop. You’ve already installed Tensorflow, Cuda, and Nvidia drivers.

You run python and import TensorFlow:

import tensorflow as tf

And you see encouraging messages like: "successfully opened CUDA library libcublas.so locally"

But in Python, when you run,

tf.Session()

You get this cryptic error:

failed call to cuInit: CUDA_ERROR_UNKNOWN

Here’s how to fix this.
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