> ## 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.

# Validate MPI version

<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>

For each minor release, Domino performs validation tests on a specific version of Open MPI. These tests cover the integration surface between the Domino platform and the on-demand MPI clusters the platform orchestrates. The testing is not a comprehensive test of Open MPI, because Domino does not modify that software.

<Note>
  The current validated and supported version of Open MPI is `4.1.2`. Other Open MPI versions might function properly, but are not supported. Domino does not validate other distributions of MPI.
</Note>