The scientific computational work as portable workflows. Automatically locates the necessary input data and computational resources, and manages storage space for executing data-intensive workflows on storage-constrained resources. Learn more.


From failures at runtime (fault-tolerance). Task are automatically retried in the presence of errors. A rescue workflow containing a description of only the work that remains is provided. Provenance is also captured (data, software, parameters, etc.). Learn more.


Failures in computations using a set of system provided debugging tools and an online workflow monitoring dashboard. Learn more.

Highlights from the Blog

2021 SciTech and Friends Research Symposium
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The Science Automation Technologies Research Group (SciTech) at the USC Information Sciences Institute aims to empower the scientific community by conducting research and software development in the area of automation of scientific computing, providing tools such as workflow management systems like Pegasus. As a result, scientists can focus on their … Read More

Predicting Flash Floods in the Dallas-Fort Worth Metroplex Using Pegasus
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Authors: Eric Lyons (University of Massachusetts at Amherst), Dong-Jun Seo (University of Texas Arlington), Sunghee Kim (University of Texas Arlington), Hamideh Habibi (University of Texas Arlington), George Papadimitriou (USC – Information Sciences Institute), Ryan Tanaka (USC – Information Sciences Institute) Research Distributed Hydrologic Model A collaborative effort of several National … Read More

PUG 2021 Followup
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PUG 2021 was a success! We had great user community engagement throughout the two-day event via Zoom and Slack. Thank you to all those who gave presentations and attended – you have all contributed to the improving Pegasus in more ways than one. In case you missed a session or … Read More

Astronomical Image Processing in the Cloud
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Author: Dino Bektešević, University of Washington, LSST/Rubin Observatory project Overview In 2020 the Data Intensive Research in Astrophysics and Cosmology institute (DIRAC), University of Washington (WA) Astronomy Department, Legacy Survey of Space and Time (LSST) and Amazon Web Services (AWS) joined forces to develop a proof-of-concept (PoC) leveraging cloud resources … Read More

Pegasus and AtlanticWave-SDX Help Orchestrating Science Applications
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Many new technologies and new paradigms are emerging in the research community to support science workflows, including the use of Data Transfer Nodes (DTNs), distributed compute and data infrastructure, research testbeds, and new inter-domain federated orchestrators. Workflow management systems (WMS), like Pegasus, are evolving to be more resource aware in … Read More

Pegasus mentions at the OSG All Hands Meeting 2021
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As the 2021 Open Science Grid – All Hands Meeting is coming to close, we wanted to bring to attention some interesting Pegasus users and mentions in talks. The meeting opened with the OSG director Frank Würthwein highlighting UNL graduate student Natasha Pavlovikj and her work on ProkEvo. Frank also … Read More

PUG 2021
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Pegasus Users Group Meeting 2021 (Feb 23rd and Feb 25th, 2021) 2020 was a busy year for us!   We released Pegasus 5.0 which comes with a brand new Python3 API for creating and managing workflows.  We have big goals for 2021. We are in the midst of planning our … Read More

Pegasus 5.0 Released
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We are happy to announce the release of Pegasus 5.0. Pegasus 5.0 is be a major release of Pegasus and builds upon the beta version released couple of months back. It also includes all features and bug fixes from the 4.9 branch. We invite our users to give it a … Read More