message: Include NCCL in the list of requirements for TensorFlow with GPU support
diff: @@ -511,6 +511,8 @@ on your system:
  list of supported GPU cards.
  * [GPU drivers](http://nvidia.com/drivers) that support your version of the CUDA
  Toolkit.
  +* NCCL 2.2 to use TensorFlow with multiple GPUs. For details, see [NVIDIA's
  + documentation](https://developer.nvidia.com/nccl).
  * The `libcupti-dev` library is the NVIDIA CUDA Profile Tools Interface. This
  library provides advanced profiling support. To install this library,
  use the following command for CUDA Toolkit >= 8.0:
  