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 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
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
We are pleased to announce release of Pegasus 4.8.0 Pegasus 4.8.0 is be a major release of Pegasus and includes improvements and bug fixes to the 4.7.4 release. Pegasus 4.8.0 Release has support for Application Containers – Pegasus now supports containers for user applications. Both Docker and Singularity are supported. … Read More
Dr. Ewa Deelman research contributions for support the efficient execution of scientific applications has been highlighted in the June edition of the IEEE Women in Engineering Magazine (Volume 11, Number 1). The article entitled ‘Super-Efficient Workflows: Deelman is impacting science applications‘ underlines Dr. Deelman’s research career, and in particular her … Read More
On Wednesday May 24th, we will present Pegasus as a part of the Blue Waters scientific workflows series. Abstract: The Pegasus Workflow Management System is a directed acyclic graph (DAG) based, powerful, and widely used workflow solution for both high-throughput and HPC workloads. In this seminar, we will give an overview … Read More
Blue Waters provides a series of free webinars throughout the year. The Scientific Workflows webinar track provides an overview of common scientific workflows and tools that enable them. In the first presentation of series of webinars, Scott Callaghan presented an overview of scientific workflows, where he discussed what the community … Read More
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 … Read More