Add Open MPI installation details for horovod (#2050)

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Udit Arora 2020-06-03 04:18:26 +05:30 committed by GitHub
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@ -9,6 +9,9 @@ run on a 2-GPU machine to validate the full test-suite.
To run all tests do the following: To run all tests do the following:
Install [Open MPI](https://www.open-mpi.org/) or another MPI implementation. Learn how to install Open MPI [on this page](https://www.open-mpi.org/faq/?category=building#easy-build>).
```bash ```bash
git clone https://github.com/PyTorchLightning/pytorch-lightning git clone https://github.com/PyTorchLightning/pytorch-lightning
cd pytorch-lightning cd pytorch-lightning