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High Performance Computing applications in GEON:

From Design to Production

Dogan Seber

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TEAM

• Choonhan Youn

• Tim Kaiser

• Cindy Santini

• Dogan Seber

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A portal-based grid application in GEON – SYNSEIS

• SYNSEIS is a SYNthetic SEISmogram calculation tool built using the Grid

• It is integrated in the GEON portal

• Provides easy access to software, data and computational platforms

• Currently being evaluated for science runs

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Synthetic seismograms are used in:

• Understanding/determining seismic source parameters

• Modeling seismic events

• Understanding sub surface structure (velocity, attenuation, structural geometries)

• Studying seismic waveform propagation

• Source identification

• …

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(Goldstein 2001)

Problem:

How to bring such advance calculations to desktops of researchers, students, educators.

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GEON’s solution:SYNSEIS (Synthetic Seismograms on the Grid)

• SYNSEIS is a grid application that provides an unprecedented opportunity for seismologists and other earth science partners to compute and study 3D seismic records to understand complex subsurface structures.

• SYNSEIS is built using a service-oriented architecture. While it provides users an easy-to-use GUI to access data, models and compute resources, it also provides “connectors” (APIs) for developers should they choose to utilize any of its components in other applications.

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GEONgridGEONgrid

Partner Projects

Chronos

CUAHSI

Partner services

USGS

GeologicalSurvey ofCanada

ESRI

NASA

PoP node

5-node cluster

4 Tb

KGS

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What we need• Software application (E3D)

– Needed input • 3D Earth structure• Earthquake/source parameters

• Computational platform– Single machine, clusters

E3D

Input Output3D Earth

Model

Earthquake Parameters

Application

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Deploying on the Grid

- Service-Oriented model- GEON uses Web Services

E3D

WSDL/SOAP WSDL/SOAP

Earth Model

WSDL/SOAP

EarthquakeParameters

Internet Internet

CORBA

IRIS

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GUI Development

• GEON uses gridsphere framework– GUI needs to be built as a Portlet and the

system should be portal accessible

Requirement:

The GUI must be easy-to-use, interactive, effective

- Flash is used as building platform

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Computational Environment

• E3D is a parallel code and it is memory and cpu hungry!– TeraGrid Cluster is a solution– GEON’s own clusters also help

Requirement:

The code must be installed on multiple platforms. HPC expertise needed!

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IRIS•Earthquakes•Stations•Waveform

Digital Libraries/GEON Data Grid

Earth model

Earth modelEarth

model

HPCHPCCentersCenters

NCSANCSA SDSCSDSC

SYNSEISe3d

Modeling earthquake recordings in Modeling earthquake recordings in 2D/3D environment to study the interior 2D/3D environment to study the interior

of the Earth in a Grid environmentof the Earth in a Grid environment

Modeling earthquake recordings in Modeling earthquake recordings in 2D/3D environment to study the interior 2D/3D environment to study the interior

of the Earth in a Grid environmentof the Earth in a Grid environment

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Web Services

Data Model Service

Job Submission/Monitoring and File Service

Data Archives Service

HPC ResourcesData Repository

Job Database

JDBC IIOP/CORBAGrid Services

GEONGrid Portal

Cornell Map Server

IRISDMC

HTTP

Grid FTP

Synseis Portlet

Macromedia Flash GUI

MyGEON

Synseis HPC

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DEMO!

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Subsurface Model services

Low sampling

Higher sampling

Earth Model

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Wave propagation movie

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Conclusions (1/2)• Using the Grid technology we were able to bring an

extremely complex and cumbersome seismic data analysis procedure to a level that can be used by anyone efficiently and effectively. SYNSEIS is a first step towards faster knowledge discovery.

• Democratization of community resources allows not only GEON researchers but also external community members to access state-of-the-art software and tools.

• Although the tool is developed for GEON applications, it holds a tremendous potential for projects like EarthScope. SYNSEIS can be used by EarthScope researchers to conduct timely analysis of collected data

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Conclusions (2/2)• SYNSEIS also has a high potential to be

used in educational environments allowing students to experiment with data and “make their own earthquakes”.

• SYNSEIS has allowed us to practice building distributed data and computational resources. We are now ready to expand such development efforts within the GEONgrid environment