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
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.
Pegasus powers LIGO gravitational wave detection analysis
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 software infrastructure. One of the main analysis pipelines used by LIGO to detect the gravitational wave was executed using Pegasus Workflow Management System (WMS). The PyCBC analysis pipeline analyzed data from the two LIGO detectors. Initially the analysis was managed by Pegasus WMS on the LIGO Data Grid. LIGO extended their computations to the nation-wide cyber-infrastructures, Open Science Grid and XSEDE. Pegasus aided this expansion by managing cross-site data transfers and computations in a reliable, scalable, and efficient manner. Pegasus enables LIGO researchers to easily monitor and analyze their workflows via a web based dashboard, and a suite of command line tools.
Diamonds that Deliver!
The Pegasus team is very happy to hear about the cutting-edge research and development that can help solve some of the challenges associated with drug delivery discovery: “The motions of a tRNA (or transfer RNA) model system can be enhanced when coupled with nanodiamonds, or diamond nanoparticles approximately 5 to 10 nanometers in size”. The discovery involved ORNL's Spallation Neutron Source, which provides the most intense pulsed neutron beams in the world for scientific research and industrial development, and ORNL's Titan supercomputer, the nation's most powerful for open science. By comparing the SNS neutron scattering data with the data from the team's molecular dynamics simulations on Titan, the researchers have confirmed that nanodiamonds enhance the dynamics of tRNA when in the presence of water; This analysis was performed with the Pegasus WMS.Read more...
Highlights from the Blog
We will be holding regular online Pegasus Office Hours this Friday October 12th at 11AM Pacific. For this series, we will have an overview presentation on Pegasus on the Open Science Grid. Topics include: How to run Pegasus workflows in the execution environment provided by OSG Connect. Using StashCache for … Read More
We are happy to announce the release of Pegasus 4.8.4 . Pegasus 4.8.4 is a minor bug fix release. Improvements [PM-1294] – update flask dependency [PM-1277] – pegasus workflows on OSG should appear in OSG gratia [PM-1288] – pegasus.project profile key is not set for SLURM submissions Bugs Fixed [PM-1282] … Read More
Dr. Deelman was invited to kick off the National Science Foundation (NSF) Office of Advanced Cyberinfrastructure (OAC) 2018 monthly webinar series. OAC – CI Webinar Series Theme and Purpose: The 2018 webinar series will focus on the translational impact of Advanced Cyberinfrastructure and will highlight how cyberinfrastructure innovations have … Read More
Last week, Open Science Grid held its annual All Hands Meeting, this time hosted by University of Utah. It was a pleasure to meet Pegasus users and see their talks. A big thank you to those projects and presenters, for sharing their experiences and continued use of Pegasus. Here are … Read More
Pegasus team members will be giving an overview of how to use containers in Pegasus workflows, at the CyVerse Container Camp, March 7-9 at University of Arizona, Tucson. The Pegasus portion is currently scheduled for Friday, but the rest of the agenda is packed with related and interesting topics such … Read More
A collaboration that began 16 years ago between computer scientists at the USC Information Sciences Institute (ISI) and members of the Laser Interferometer Gravitational-Wave Observatory (LIGO) and Virgo projects is opening up a new window onto the nature of the universe. Pegasus, a specialized computer program developed by a … Read More