# Running MPI jobs
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As suggested in SchedMD, bootstrap MPI jobs using Slurm as the MPI bootstrapping method. For more information, refer to the official [Slurm documentation](https://slurm.schedmd.com/mpi_guide.html#intel_mpi) or the official documentation for your MPI library.

For example, in the [IntelMPI official documentation](https://www.intel.com/content/www/us/en/develop/documentation/mpi-developer-reference-linux/top/environment-variable-reference/hydra-environment-variables.html), you learn that when running a StarCCM job, you must set Slurm as process orchestrator by exporting the environment variable `I_MPI_HYDRA_BOOTSTRAP=slurm`.

**Note**  
Known issue  
In the case where your MPI application relies on SSH as mechanism to spawn MPI jobs, it's possible to incur in a [known bug in Slurm](https://bugs.schedmd.com/show_bug.cgi?id=13385) that causes the wrong resolution of the directory user name to "nobody".  
Either configure your application to use Slurm as the MPI bootstrapping method or refer to [Known issues with username resolution](troubleshooting-v3-multi-user.md#troubleshooting-v3-multi-user-name-resolution) in the Troubleshooting section for further details and possible workarounds.