This document introduces GridSAM, a job management system that allows users to submit, monitor, and terminate jobs across different computational resource management systems. It provides an overview of GridSAM's architecture and standards compliance, describes how it can be installed and deployed, and outlines some future development plans. Instructions are given for accessing a demo instance of GridSAM for hands-on use in an integrated practical session.

1. GridSAM Introduction & Practical
Steve Crouch, OMII-UK
s.crouch@omii.ac.uk
14/07/09
Web: www.omii.ac.uk Email: info@omii.ac.uk

2. Overview
• An example scenario - CPOSS
• Introduction to GridSAM
• How and where to get it, future developments
• The basic practical
o Client installation
o Basic job submission and monitoring
o A job with data – using GILDA GridFTP service
Web: www.omii.ac.uk Email: info@omii.ac.uk

3. Example Scenario - CPOSS ENGAGE Project
Job
GridSAM
Management Condor …
System
Legion
Portal
Active
Workflo (PBS
…
w
BPEL Torque
)
• Users and their applications GridSAM
UK …
are all important NGS
• Grid is an enabler
Web: www.omii.ac.uk Email: info@omii.ac.uk

4. GridSAM Overview
• What is GridSAM to the resource owners?
o A Web Service to expose heterogeneous execution resources
uniformly
• Single machine through Forking or SSH
• Condor
• Portable Batch Scheduler (PBS)
• Platform Load Sharing Facility (LSF)
• Sun GridEngine
• Globus
o Acts as a client to these resources
• What is GridSAM to end-users?
o A set of end-user command-line tools and client-side APIs to
interact with GridSAM Web Services
• Submit, monitor and terminate compute jobs
• Cross-protocol file transfer (gsiftp, ftp, sftp, WebDav, http, https, soon SRB,
iRODS) via Commons-VFS (http://sourceforge.net/projects/commonsvfsgrid)
Web: www.omii.ac.uk Email: info@omii.ac.uk

5. GridSAM and OGF Open Standards
• Two key standards for two key elements:
o The Basic Execution Service interface (OGSA-BES)
• Handles basic job lifecycle management
• Defines simple (but extendable) job state model
– Pending, running, cancelled, failed or finished
o The Job Submission Description Language (JSDL)
• Specify job executable, data staging and resource requirements
• Partial support for (across some DRMs):
o HPC File Staging Profile – fine-grained security for data
staging
o JSDL Single Process Multiple Data (SPMD) Application
Extension
Web: www.omii.ac.uk Email: info@omii.ac.uk

6. GridSAM Architecture
• A staged event-driven architecture
o Submission pipeline is constructed as a network of stages
connected by event queues
o Each stage performs a specific action upon incoming events
Example Pipeline: Condor
Web: www.omii.ac.uk Email: info@omii.ac.uk

7. GridSAM – Publications & Enabled Activities
Web: www.omii.ac.uk Email: info@omii.ac.uk

8. OMII Development Kit: Server
• Currently version 3.4.4; comprised of:
o Web Services Container
• Tomcat/Axis - Web Services provider/container with optional WS-
Security - handles authentication
o Data persistence managed by readily-installable PostgreSQL
or HyperSonic databases, or pre-installed MySQL
o Optionally downloadable and installable Commissioned
Software server components:
• GridSAM: Job submission and monitoring
• AHE: Application Hosting Environment
• Grimoires: UDDI + metadata registry
• …
• Development Kit Client – that’s the practical 
Web: www.omii.ac.uk Email: info@omii.ac.uk

9. CGT – The Campus Grid Toolkit
• Client/server solution that contains
o Apache Tomcat/Axis/WSS4j (WS-Security)
o GridSAM
o Optional - Application Hosting Environment (AHE)
o PostgreSQL or HyperSonic database
• Easy installation for quick deployment via
autoconfiguration
o Initial security setup for testing
o Hooks into existing computational resources
• End-to-end, ‘out of the box’ working examples
• Documentation
• Version 1.1.3 (with GridSAM 2.1.6) out now
Web: www.omii.ac.uk Email: info@omii.ac.uk

10. Open Development
• GridSAM is Open Source,
Open Development
• GridSAM SourceForge project:
o 99.03% activity, 1 release/month
o SVN source code repository
o Developer & User mailing lists
• You are more than welcome to
http://sourceforge.net contribute!
/projects/gridsam/
Web: www.omii.ac.uk Email: info@omii.ac.uk

11. Future Developments
• Consolidation, extensive testing towards public
2.2.0 release end-Q3 2009
o Stress testing, improvement of support for standards
• Deployable as a standalone, vanilla web service
• PBS-based deployment on NGS
• JSDL Parameter Sweep Extension
o Single job submission that parameterises inputs
• Policy-based brokering to other GridSAM instances
• Publication of roadmap by end-July for comment
and feedback
• ...what our users want!
Web: www.omii.ac.uk Email: info@omii.ac.uk

12. The Practical
• Go to http://www.ecs.soton.ac.uk/~stc/ISSGC09
• Use issgc-ui.polytech.unice.fr
o Username: issgc<xx>
o Password: GridISS<xx>
• Included in the Integrated Practical
• Good luck!
• If you want more information:
o http://www.omii.ac.uk/wiki/Documentation - for docs
o http://www.omii.ac.uk/ - for general OMII-UK info
Web: www.omii.ac.uk Email: info@omii.ac.uk