Pegasus is an open-source workflow management system.
[1][2][3] It provides the necessary abstractions for scientists to create scientific workflows[4] and allows for transparent execution of these workflows on a range of computing platforms including high performance computing clusters, clouds, and national cyberinfrastructure.
[5][6] In Pegasus, workflows are described abstractly as directed acyclic graphs (DAGs) using a provided API for Jupyter Notebooks, Python, R, or Java.
[10][11] Pegasus is being used in a number of different disciplines including astronomy, gravitational-wave physics, bioinformatics, earthquake engineering, and helioseismology.
[12] Notably, the LIGO Scientific Collaboration has used it to directly detect a gravitational wave for the first time.