AWS ParallelCluster is licensed under the Apache License 2.0 (http://aws.amazon.com/apache2.0/).

AWS ParallelCluster AMIs ship with the following independent packages, which are offered
under separate terms.

sge
slurm
torque

For each package, the license is available in the /opt/parallelcluster/licenses/<package>
directory, and the source code is available in the /opt/parallelcluster/sources directory.