The document summarizes the Open Grid Computing Environments (OGCE) software tools for building science gateways. It describes several key components: 1) The OGCE Gadget Container allows building portals out of Google gadgets and supports workflows, registries, and experiments. 2) Tools like XBaya allow composing scientific workflows that can run on resources like the TeraGrid. 3) The software is open source and can be used individually or together to power science gateways and provide interfaces and services to computational resources.

1. Software for Science Gateways: Open Grid Computing Environments Marlon Pierce, Suresh Marru Pervasive Technology Institute Indiana University www.collab-ogce.org

2. http://www.collab-ogce.org/ogce/index.php/Tutorials Link to demonstration movies.

3. Software Description OGCE Gadget Container Google Gadget/Open Social compatible software for building Web-based user interfaces. XBaya A visual user interface for composing, launching and monitoring workflows GFAC An application factory service for wrapping command-line tools as Web services XRegistry; Registry Gadget A service and workflow registry and its user interface Experiment Builder User interface for creating online experiments with registered workflows

4. Science Gateways Layer Cake Color Coding Dependent resource provider components Complimentary Gateway Components OGCE Gateway Components Compute Resources Resource Middleware Cloud Interfaces Grid Middleware SSH & Resource Managers Computational Clouds Computational Grids Gateway Services User Interfaces Web/Gadget Container Web Enabled Desktop Applications User Management Auditing & Reporting Fault Tolerance Application Abstractions Workflow System Information Services Application Monitoring Registry Security Provenance & Metadata Management Local Resources Web/Gadget Interfaces Gateway Abstraction Interfaces

5. GFac Current & Future Features Color Coding Planned/Requested Features Existing Features Input Handlers Scheduling Interface Auditing Monitoring Interface Data Management Abstraction Job Management Abstraction Fault Tolerance Output Handlers Registry Interface Checkpoint Support Globus Campus Resources Unicore Condor Amazon Eucalyptus

6. OGCE Layered Workflow Architecture: Derived from LEAD Workflow System Workflow Execution & Control Engines Apache ODE Workflow Specification Workflow Interfaces (Design & Definition) Python BPEL 2.0 BPEL 1.0 Java Code Pegasus DAG Scufl XBaya GUI (Composition, Deploying, Steering & Monitoring) Gadget Interface for Input Binding Condor DAGMan Taverna Dynamic Enactor Jython Interpreter GBPEL Flex/Web Composition

7. Putting It All Together

11. Demos Next

12. The OGCE Application Registry gadget allows users to interactively register hosts and applications that are dynamically wrapped as Web services.

13. The OGCE Gadget Container allows you to build portals out of public and private Google Open Social gadgets. Supports HTTPS. Downloadable, packaged software.

14. The OGCE Experiment Builder gadget allows users to create projects and experiments out of previously composed workflows.

15. OGCE Tools for Science Workflows The XBaya workflow composer allows you to build scientific workflows from services running across the TeraGrid. This is part of our workflow suite.

17. Google Gadget-Based Science Gateways LEAD PolarGrid