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Grid Execution Management for Legacy Code Architecture

Deploying Legacy Applications on Service-oriented Grid. Grid Execution Management for Legacy Code Architecture. Tamas Kiss – Stephen Winter Centre for Parallel Computing University of Westminster kisst@wmin.ac.uk. Presentation Outline. Grid computing – a short introduction

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Grid Execution Management for Legacy Code Architecture

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  1. Deploying Legacy Applications on Service-orientedGrid GridExecutionManagementforLegacyCodeArchitecture Tamas Kiss – Stephen Winter Centre for Parallel Computing University of Westminster kisst@wmin.ac.uk

  2. Presentation Outline • Grid computing – a short introduction • GEMLCA objectives and concept • GEMLCA architecture • Deployment examples • Conclusion – future work • Live demonstration

  3. What is a Grid? • Grid is a collection of computers, storages, special devices, services that can dynamically join and leave the Grid • They are heterogeneous in every aspect • They are geographically distributedandconnected by a wide-area network • They can be accessed on-demand by a set of users

  4. Why use a Grid? • A user has a complex problem that requires many services/resources in order to • reduce computation time • access large databases • access special equipments • collaborate with other users

  5. Grid enabled application runs on Grid machines Collaborative work by the Grid Remote Visualisation in Tokyo Visualisation of data from previous simulations in a Vienna café Remote steering and monitoring from airport Remote Visualisation and steering from Rome Germany USA Grid gateway Simulations launched from London

  6. High-performance systems Client/server systems Network Computing Cluster computing Super- computing High-performance computing Web Services High-throughput computing Generations of Grid Systems Grid Systems 2nd Gen. 1st Gen. Globus 2 Condor 3rd Gen. OGSA/Globus 3/4 G-Lite

  7. OGSA Testbed Grid UK E-science OGSA Testbed • test and evaluate OGSA/GT3 core • evaluate performance, ease of deployment and use, and interoperability University of Portsmouth University of Westminster University of Manchester University of Reading Daresbury, CCLRC University of Southampton SZTAKI (Hungary)

  8. Presentation Outline • Grid computing – a short introduction • GEMLCA objectives and concept • GEMLCA architecture • Deployment examples • Conclusion – future work • Live demonstration

  9. Legacy Applications • Code from the past, maintained because it works • Often supports business critical functions • Not Grid enabled What to do with legacy codes when utilising the Grid? • Bin them and implement Grid enabled applications • Reengineer them • Port them onto the Grid with minimum user effort

  10. GEMLCA – Grid Execution Management for Legacy Code Architecture Objectives • To deploy legacy code applications as Grid services without reengineering the original code and minimal user effort • To create complex Grid workflows where components are legacy code applications • To make these functions available from a Grid Portal GEMLCA GEMLCA PGPortal Integration

  11. 3rd generation Grids: (OGSA: GT4, gLite) Web browser Grid Site 1 Desktop 1 Legacy applications Grid Site 2 Web browser Legacy applications Desktop N Legacy applications in service-oriented GridsGemlca – PGrade portal approach: thin client P-GRADE Portal Server

  12. GEMLCA Concept GEMLCA Resource Grid Host Compute Environment (GT3/GT4) Servers Legacy Code Client: to apply legacy code Grid service Process OGSA Container MMJFS Legacy Code Job Job Manager (Condor/Fork) • Resource managerdeploys: • a. LC Use the integrated P-GRADE/GEMLCA Portal in each case Client: to deploy legacy code Grid service • b. GT3/4 • c. GEMLCA

  13. Presentation Outline • Grid computing – a short introduction • GEMLCA objectives and concept • GEMLCA architecture • Deployment examples • Conclusion – future work • Live demonstration

  14. GEMLCA Server Side Grid Host Compute GEMLCA Resource Client Environment (GT3/GT4) Servers Grid Service Client Legacy Code OGSA Container Process MMJFS Legacy Job Manager Code Job (Condor/Fork)

  15. GEMLCA at Server Side Required GEMLCA Resources • GT3/GT4 installed • MMJFS tested • Fork/Condor job manager • Grid FTP running • GEMLCA server package and Tomcat 4 installed • GEMLCA legacy code deployed

  16. GEMLCA at Server Side Legacy Code Deployment

  17. GEMLCA Client SideP-GRADE Portal Grid Host Compute GEMLCA Resource Client Environment (GT3/GT4) Servers Grid Service Client Legacy Code OGSA Container Process MMJFS Legacy Job Manager Code Job (Condor/Fork)

  18. P-GRADE Grid PortalPG-Portal functionalities

  19. Gemlca Client in a nutshell in the P-GRADE portal Proxy Management

  20. Gemlca Client in a nutshell in the P-GRADE portal Definition of GEMLCA Resources

  21. Gemlca Client in a nutshell in the P-GRADE portal Workflow Creation UoW Sztaki UoR

  22. Gemlca Client in a nutshell in the P-GRADE portal Execution Visualisation

  23. Presentation Outline • Grid computing – a short introduction • GEMLCA objectives and concept • Server side • GEMLCA client – the P-GRADE portal • Deployment examples • Conclusion – future work • Live demonstration

  24. Deployment examples Workflow to analyse road traffic Manhattan road network generator Traffic simulators Analyser

  25. Further examples • GAMESS-UK • Ab initio molecular electronic structure program for performing SCF-, DFT-, and MCSCF-gradient calculations using a variety of techniques for post Hartree-Fock calculations • Developed by Daresbury Laboratory • MultiBayes • Phylogenetic Tree Construction • Developed at the School of Animal and Microbial Sciences at University of Reading

  26. I’m a biologist not a Grid expert Sorry, no additional utilities to be deployed on core resources ??? UK NGS Leeds Oxford • Service reliability • Administration GT2 Manchester Rutherford GEMLCA and Production Grids The problem

  27. User-friendly Web interface UK NGS Leeds Oxford GT2 Manchester Portal server at UoW Rutherford The solution

  28. 3rd generation Grids: (OGSA: GT3, WSRF, gLite) Web browser Grid Site 1 Desktop 1 Legacy applications Grid Site 2 Web browser Legacy applications Desktop N Centralised GEMLCA solution P-GRADE Portal Server

  29. interface GEMLCA interface The scenarios Scenario 1 – legacy code repository 3rd party service provider (UoW) GEMLCA resource (GT4 + GEMLCA classes) NGS site1 (GT2) Workflow definition NGS site2 (GT2) P-Grade Portal Central repository legacy code1 legacy code2 …. legacy coden NGS siten (GT2) user job submission

  30. Advantages of Scenario 1 • legacy codes can be uploaded into a central repository and made available for authorised users through a Grid portal • would extend the usability of NGS as users utilise others’ legacy codes stored in the repository • No support needed at the NGS sites

  31. The scenarios Scenario 2 – Legacy code services NGS site1 (GT2) Legacy codes 3rd party service provider (UoW) Workflow definition GEMLCA resource (GT4 + GEMLCA classes) NGS site2 (GT2) Legacy codes P-Grade Portal user NGS siten (GT2) Legacy codes Execution request

  32. Advantages of Scenario 2 • extends the NGS Grid towards the service-oriented Grid concept • Userscan access the legacy codes that are deployed on the NGS sites • NGS system administrators have full control of legacy codes that they deploy on their own resources

  33. Presentation Outline • Grid computing – a short introduction • GEMLCA objectives and concept • GEMLCA architecture • Deployment examples • Conclusion – future work • Live demonstration

  34. Conclusions • GEMLCA enables the deployment of legacy code applications as Grid services without any real user effort. • GEMLCA is integrated with the P-GRADE portal to offer user-friendly development and execution environment. • The integrated GEMLCA P-GRADE solution was successfully demonstrated using the traffic simulator and other applications

  35. Further GEMLCA Development Automatic service deployment, discovery and selection Grid Site 1 Web browser Information Service P-GRADE Portal Server Desktop 1 Broker Legacy applications Grid Site 2 Web browser Abstract workflow Automatic deployer Desktop N Legacy applications

  36. Any questions? Thank you for your attention … Email: gemlca-discuss@cpc.wmin.ac.uk Website: www.cpc.wmin.ac.uk/gemlca

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