We will be holding regular online Pegasus Office Hours this Friday August 10th at 11AM Pacific. For this series, we will have an overview presentation on Integrity Checking in Pegasus. This new capability will be introduced in the upcoming Pegasus 4.9.0 release. We hope to see you online on August 10th. Please feel to … 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 are happy to announce the release of Pegasus 4.8.3 . Pegasus 4.8.3 s a minor bug fix release New Features [PM-1280] – incorporate container based example in pegasus-init pegasus-init was updated to include a population modeling example using containers. Updated tutorial instructions using that example can be found at http://pegasus.isi.edu/tutorial/isi/index.php … 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
By Emily Gersema, USC News The Nobel Prize-winning discovery that gravitational waves exist in the universe, which in turn further confirmed Albert Einstein’s General Theory of Relativity, was made possible in part by a collaboration with USC computer scientists. By developing a specialized computer program called Pegasus, a team … Read More
The Pegasus team is pleased to announce that it has received a new grant from the National Science Foundation to support new development and maintenance of the Pegasus Workflow Management System. It will support Pegasus for the next 5 years and help address the needs of our diverse user community. … Read More