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

ACCESS Pegasus – Hosted workflow environment with HTCondor Annex
with No Comments

Pegasus is now part of the ACCESS support strategy, including a hosted Pegasus environment for all ACCESS users. On September 1st, the XSEDE project transitioned to ACCESS. Support under this new project will be provided in a tiered manner, with the lower tiers providing easy to use self-serve tooling. Pegasus … Read More

Scitech at eScience 22
with No Comments

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, October 10th 2022 (1PM-3PM Mountain Time) Zion Bank … Read More

Learning and adapting with OSG: Investigating the strong nuclear force
with No Comments

This article is a repost from OSG: “Learning and adapting with OSG: Investigating the strong nuclear force”   By: Josephine Watkins The GRIFFIN Spectrometer. (Image credit: Kirk Chantraine, TRIUMF Photowalk 2018). Connor Natzke’s journey with the OSG Consortium began in 2019 as a student of the OSG User School. Today, … Read More

Investigating the Strong Nuclear Force – 2022 David Swanson Memorial Award
with No Comments

Congratulations to Connor Natzke for winning the 2022 David Swanson Memorial Award. Below is a description of Connor’s workflow. In general if you want to measure something very small, you need a very large microscope; if you want to measure the nuclear strong force, the force that holds the nuclei … Read More

Kate Keahey to Speak at ISI for Seminar on March 24, 2022
with No Comments

Date: Thursday, March 24th, 2022 Time:11:00am – 12:00pm PST Location: ISI Title Chameleon: An Innovation Platform for Computer Science Research and Education Abstract We live in interesting times: new ideas and technological opportunities emerge at ever increasing rate in disaggregated hardware, programmable networks, and the edge computing and IoT space to … Read More

Serge Petiton to Speak at ISI for Seminar on February 17, 2022
with No Comments

Date: Thursday, February 17th, 2022 Time: 8:00am – 9:00am PST Location: ISI Title YML and Multi-Level Programming Paradigms using Graphs of Task Abstract Exascale supercomputers will have highly hierarchical architectures with nodes composed by lot-of- core processors and often accelerators. Methods would often have to be redesigned and new ones … Read More

Astronomical Image Processing at Scale With Pegasus and Montage: Leveraging the OSG
with No Comments

Developers of the Montage toolkit, Bruce Berriman and John Good of the NASA Exoplanet Science Institute, Infrared Processing and Analysis Center (IPAC) at the California Institute of Technology, have presented in the Astronomical Data Analysis Software and Systems (ADASS) 2021 conference on how you can utilize Pegasus to build and run Montage pipelines on the OSG to generate massive mosaics of the sky. Take a look at what they have done in their demo and try it out for yourself!

CrisisFlow: Multimodal Representation Learning Workflow for Crisis Computing
with No Comments

USC computer science students, Patrycja Krawczuk (PhD) and Shubham Nagarkar (MS), share how they have used the Pegasus Workflow Management system to develop CrisisFlow, a computational workflow that can aid in disaster relief efforts by accurately classifying multimodal social media posts relating to crisis events.