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

Pegasus 5.0.1 Released
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We are happy to announce the release of Pegasus 5.0.1, which is a minor bug fix release for Pegasus 5.0. We invite our users to give it a try. The release features improvements to the Pegasus Python API including ability to visualize statically the abstract and generated executable workflows. It also has … Read More

Scitech at eScience
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The Pegasus (SciTech) group will be actively participating in several events and presenting talks in workshops, posters, and presenting papers at eScience 2021. Find below a list of events where you can meet our team. We look forward to seeing you! … Monday, September 20th: PRESENTATION: Pegasus 5.0 Workflows Speakers: Karan … Read More

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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Take a look at how Pegasus has been used to predict flash floods in the Dallas-Fort Worth metroplex.

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