The workflow description modified to output a VDS DAX. The workflow description toolkit developed allows any concrete

workflow description to be migrated onto the LSC Data Grid using Pegasus.

The LSC is using the occasion of SC2004 to undertake a production analysis of data from its third science run (S3) to search for gravitational waves from binary neutron stars and black holes.

Pegasus supports a wide variety of workflows running on the Grid from various scientific fields ranging from Astrophysics, Astronomy, High Energy Physics to Earthquake Sciences and Computational Biology.

BLAST Genome Analysis and Database Update

http://www-fp.mcs.anl.gov/pdq/pdq.htm ATLAS Monte Carlo data production Sloan Digital Sky Survey galaxy cluster finding http://www.sdss.org Neuro Tomography - http://ncmir.ucsd.edu

Pegasus at work on the GridPegasus at work on the Gridhttp://pegasus.isi.edu

People InvolvedLIGO : Patrick Brady, Scott Koranda, Stephen Fairhurst – UWM

Kent Blackburn, Duncan Brown, Teviet Creighton, Albert Lazzarini - Caltech

Gabriela Gonzalez - Louisiana State University

MONTAGE : Bruce Berriman, John Good, Anastasia Laity - Caltech/IPAC

Joseph Jacob, Daniel Katz - JPL

SCEC : Vipin Gupta, Phil Maechling, Maureen Dougherty, Brian Mendenhall,

Garrick Staples - USC

John Mcgee, Sridhar Gullapalli – ISI

Thanks to everyone involved in setting up the testbed and for

contributing the resources.

SCEC is developing the Southern California Earthquake Center Community Modeling Environment (SCEC/CME).

Grid computing have made practical to create fully three-dimensional (3D) simulations of fault-system dynamics.

These physics-based simulations can potentially provide enormous practical benefits for assessing and mitigating earthquake risks through Seismic Hazard Analysis (SHA).

The SCEC/CME system is an integrated geophysical simulation modeling framework that automates the process of selecting, configuring, and executing models of earthquake systems on the grid via Pegasus.

A View of SCEC Composition Process

LSC Testbed

Grid-BasedData Selector

CompositionalAnalysis Tool

(CAT)

DAXGenerator

Pegasus

CondorDAGMAN

PathwayComposition

Tool

GRID

host1host2

Data

Data

CAT KnowledgeBase

SCEC DatatypeDB

MetadataCatalog Service

ReplicaLocationService

Dax

Dag

Rsl

HAZARD MAP

LIGO Scientific Collaborationhttp://www.ligo.org

Radio observations confirm the existence of binary neutron star systems in the Galaxy.

In previous science runs, approximately a thousand of shapes or templates were required;

Increasing complexity with design sensitivity. Currently searches performed on dedicated Beowulf clusters with ~ 300 CPUs. Very Compute intensive hence ideal candidate for Grid Computing Production analysis of S3 data to demonstrate scalability of the inspiral analysis

tools on to a full-scale Grid testbed.

Montagehttp://montage.ipac.caltech.edu

Delivers science grade custom mosaics on demand

Produces mosaics from a wide range of data sources (possibly in different spectra)

User-specified parameters of projection, coordinates, size, rotation and spatial sampling.

The Sword of Orion (M42, Trapezium, Great Nebula). This mosaic was obtained by running a Montage workflow through Pegasus and executing the concrete workflow

the Teragrid resources.

Black Hole Inspiral Gravitational Waveform

Gravitational Waves from binary inspiral

Binary black hole inspiral (artist rendering)

A small montage workflow

Other Success Stories

Southern California Earthquake Centerhttp://www.scec.org