The neural simulation tool.

This documentation is also provided with each nest package variant as (nest, nest-mpich, nest-openmpi):

The Fedora packages of the NEST simulator are built to cover various configurations and installs their files in the standard locations:

  • nest: NEST simulator without MPI support
  • python3-nest: PyNEST for Python 3 without MPI support

  • nest-mpich: NEST simulator build with MPICH support

  • python3-nest-mpich: PyNEST for Python 3 with MPICH support

  • nest-openmpi: NEST simulator build with OpenMPI support

  • python3-nest-openmpi: PyNEST for Python 3 with OpenMPI support


The must be sourced to set up the environment correctly for NEST, which makes use of a few environment variables:

The file can be sourced:

  • for MPICH builds: source /usr/lib64/mpich/bin/
  • for OpenMPI builds: source /usr/lib64/openmpi/bin/
  • for non MPI builds: source /usr/bin/

To use an MPI build of NEST, one must also load the appropriate module. For MPICH builds:

module load mpi/mpich-$arch # $arch is the architecture, for example x86_64

For OpenMPI builds:

module load mpi/openmpi-$arch # $arch is the architecture, for example x86_64

It is generally easier to add these lines to the ~/.bashrc file (for bash users) so that these commands are automatically run on each login.

The binaries for each MPI build are suffixed to distinguish them from each other:

For MPICH builds, they would be:


For OpenMPI builds:


More information on using MPI builds can be found in the NeuroFedora documentation here:

Package documentation

The generated documentation is provided in the nest-doc package, and is common for all builds.

Official documentation can be found at