> ## Documentation Index
> Fetch the complete documentation index at: https://docs.domino.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Manage MPI dependencies

<Note>
  The Open MPI feature is only available with Domino versions 5.1.1 and later. Previous versions of Domino do not support this feature.
</Note>

The Domino Open MPI base image contains common dependencies like Pandas and NumPy. You can modify your environments to add additional packages or a specific package version.

You can package and manage dependencies for your [MPI-enabled compute environments](/cloud/platform-capabilities/features/compute-clusters-hpc/mpi/configure-mpi-prerequisites). This creates flexibility in managing dependencies for individual projects or workloads without shared cluster worker complexities.

* To add a new cluster worker, add the appropriate statements in the **Docker Instructions** section of both the MPI cluster and Open MPI execution environments. For example, to add a particular version of `PyTorch` or the `mpi4py` package include the following:

```dockerfile theme={null}
### Optionally specify version if desired
RUN pip install PyTorch==1.9.0
RUN pip install mpi4py
```