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. 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 @ HTCondor Week 2016
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Date:   Hands on Tutorial on Tuesday, May 17th, 2016 Talk on Pegasus – Enhancing LIGO DAGMan Experience on Friday May 20th, 2016 Location: Town Center, The Wisconsin Institutes for Discovery. Instructor: The Pegasus team from USC Information Sciences Institute Tutorial Exercises:   The Pegasus Team is hosting a hands on tutorial on Pegasus … Read More

Pegasus 4.6.1 Release
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We are happy to announce the release of Pegasus 4.6.1.  Pegasus 4.6.1 is a minor release of Pegasus and includes improvements and bug fixes to the 4.6.0 release New features and Improvements in 4.6.1 are support for MOAB submissions via glite. A new tool called pegasus-configure-glite helps users setup their HTCondor GLite directory for … Read More

Pegasus Workshop on USC Health Science Campus, March 22nd 2016
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Time: 2pm-5pm Date:  Tuesday, March 22nd, 2016 Location: Aresty Auditorium at Health Sciences Campus Instructor:  The Pegasus team from Viterbi’s Information Sciences Institute Registration: Course Material:     The Pegasus Team is hosting a half day workshop on March 22nd, 2016 at the Health Science Campus. This workshop includes a … Read More

Pegasus and LIGO
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Early this month, the Pegasus team was very excited to hear about LIGO’s incredible discovery: the first detection of gravitational waves from colliding black holes. Since then, LIGO and Pegasus have been featured in several media channels. Below, we summarize some of these publications. Additionally, we provide the link to … Read More

SCEC Cybershake: Using Pegasus to run across OLCF Titan, Bluewaters and HPCC
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While recently gathering data for the Pegasus Annual Report, we reached out to our collaborators at SCEC to summarize how Pegasus WMS impacted their science in 2015. Some interesting facts about SCEC Cybershake Study 15.4 performed by SCEC in 2015 using Pegasus Calculations were distributed between the NSF Track 1 system NCSA Blue … Read More

Pegasus powers LIGO gravitational wave detection analysis
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The Pegasus team is very happy to hear about LIGO’s incredible discovery: the first detection of gravitational waves from colliding black holes. We congratulate the entire LIGO Scientific Collaboration and the Virgo Collaboration on this incredible achievement.     The Pegasus team is very pleased to have contributed to LIGO’s … Read More

Pegasus 4.5.4 Released
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We are happy to announce the release of Pegasus 4.5.4. Pegasus 4.5.4 is a minor release, which contains minor enhancements and fixes bugs. This will most likely be the last release in the 4.5 series, and unless you have specific reasons to stay with the 4.5.x series, we recommend to … Read More

OSG Software Carpentry Workshop at University of Nebraska, Lincoln
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Last week, UNL HCC and OSG User Support hosted a OSG Software Carpentry workshop at University of Nebraska, Lincoln. The workshop material included Python, Git, distributed high throughput computing, and of course Pegasus! The material for the workshop can be found at: Even though the Pegasus module is only … Read More