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 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

Pegasus in 5 Minutes
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In this quick 5 minute presentation, the Pegasus team gives you an introduction into the Pegasus Workflow Management System. We give a rundown on how Pegasus workflows are created, compiled for your execution environment, and then executed on distributed resources.

My Summer Research Internship at SciTech Lab
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Note the author: Kelsie Lam is a senior at Mission San Jose High School. She is a SciTech research intern interested in artificial intelligence and cognitive science. In the lab, Kelsie investigates how scientists use machine learning methods to support their research and works on developing workflows. Github: During … Read More

Leveraging Pegasus for Integrated Assessment Modeling
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In 2016, Vermont EPSCoR received a $20M award from the National Science Foundation to study and promote resiliency in Lake Champlain Basin. The study aims to provide much needed information to decision-makers as they govern the basin and develop policies that reach far into the future. A novel computer model … Read More

Data Collection and Monitoring Across Heterogeneous Workflows in Pegasus
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We will be holding regular online Pegasus Office Hours on Friday April 3rd, 2020 at 11AM Pacific. During this installment of Pegasus Office hours, we will be presenting a data collection pipeline we have developed to enable researchers of the Laser Inferometer Gravitational-Wave Observatory (LIGO) to easily monitor and analyze … Read More

Pegasus Workflows on OLCF Summit
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We will be holding regular online Pegasus Office Hours on Friday January 24th, 2020 at 11AM Pacific. This time, we will have an overview presentation of the recent work done to submit Pegasus Workflows on OLCF Summit. OLCF team provides an Openshift/Kubernetes based infrastructure within their DMZ that facilitates access … Read More