Quick Install Guide

This quick install guide outlines the basic steps needed to install OpenMC on your computer. For more detailed instructions on configuring and installing OpenMC, see Installation and Configuration in the User’s Manual.

Installing on Linux/Mac with conda-forge

Conda is an open source package management system and environment management system for installing multiple versions of software packages and their dependencies and switching easily between them. If you have conda installed on your system, OpenMC can be installed via the conda-forge channel. First, add the conda-forge channel with:

conda config --add channels conda-forge

OpenMC can then be installed with:

conda install openmc

Installing on Ubuntu through PPA

For users with Ubuntu 15.04 or later, a binary package for OpenMC is available through a Personal Package Archive (PPA) and can be installed through the APT package manager. First, add the following PPA to the repository sources:

sudo apt-add-repository ppa:paulromano/staging

Next, resynchronize the package index files:

sudo apt update

Now OpenMC should be recognized within the repository and can be installed:

sudo apt install openmc

Binary packages from this PPA may exist for earlier versions of Ubuntu, but they are no longer supported.

Installing from Source on Ubuntu 15.04+

To build OpenMC from source, several prerequisites are needed. If you are using Ubuntu 15.04 or higher, all prerequisites can be installed directly from the package manager.

sudo apt install gfortran g++ cmake libhdf5-dev

After the packages have been installed, follow the instructions below for building and installing OpenMC from source.


Before Ubuntu 15.04, the HDF5 package included in the Ubuntu Package archive was not built with support for the Fortran 2003 HDF5 interface, which is needed by OpenMC. If you are using Ubuntu 14.10 or before you will need to build HDF5 from source.

Installing from Source on Linux or Mac OS X

All OpenMC source code is hosted on GitHub. If you have git, the gfortran compiler, CMake, and HDF5 installed, you can download and install OpenMC be entering the following commands in a terminal:

git clone https://github.com/mit-crpg/openmc.git
cd openmc
mkdir build && cd build
cmake ..
sudo make install

This will build an executable named openmc and install it (by default in /usr/local/bin). If you do not have administrator privileges, the cmake command should specify an installation directory where you have write access, e.g.


If you want to build a parallel version of OpenMC (using OpenMP or MPI), directions can be found in the detailed installation instructions.