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

Job Openings
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The SciTech group does research and development on software systems to help scientists manage large-scale computations. We work with scientists in domains ranging from genomics and proteomics to seismology and gravitational wave physics. We help scientists deploy their computations on some of the largest and fastest computing systems in the … Read More

Pegasus Workflows on OLCF Summit
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Summit is a leadership-class computing system for open science that is hosted at the Oak Ridge National Laboratory. Summit, launched in 2018, delivers 8 times the computational performance of Titan’s 18,688 nodes, using only 4,608 nodes. Its architecture with the associated GPU resources, makes it an attractive resource for scientists … Read More

Pegasus and Dynamo Aiding Weather Scientists
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Computational science today depends on many complex, compute and data-intensive applications operating on distributed datasets that originate from a variety of scientific instruments and data repositories. Two major challenges for these applications are (1) the provisioning of compute resources and (2) the integration of data into the scientists’ workflow. Background … Read More

Meet us @ SC19
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The Pegasus (SciTech) group will be actively participating in several events and presenting talks in workshops, panels, and exhibitors booths at SC19. Find below a list of events where you can meet our team. We look forward to seeing you in Denver, CO! … Sunday Nov 17: 14th Workflows in … Read More

Pegasus 4.9.2 Released
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We are happy to announce the release of Pegasus 4.9.2. Pegasus 4.9.2 is a minor bug fix release after Pegasus 4.9.1. This release has support for retrieval of datasets from HPSS, and improved events that can be sent to AMQP endpoints for users to build custom dashboards. Additionally, all PegasusLite … Read More

eScience 2019 and Gateways 2019 Talks and Events
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The Pegasus (SciTech) group will be presenting several talks at various workshops and main conference sessions for both the eScience 2019 and Gateways 2019 conferences. See below for a list of our team’s events (details pending). If you would like to meet with the Pegasus team in person, please email … Read More

Let us know how you use Pegasus!
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Is Pegasus an integral part of your work? If so, we want to know! We love to keep up with all the ways in which Pegasus is applied. Regardless of subject or field, the Pegasus Team wants to know how our users are benefiting from Pegasus and how we can continue to … Read More

XENON1T observed the rarest decay process ever measured
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Congratulations to our collaborator XENON1T who just observed the rarest decay process ever measured! While this liquid xenon Time Projection Chamber is designed to search for dark matter, its ultra-low background allows the chamber to be sensitive to a large range of rare processes. One of these is the 2 … Read More