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Given by Geoffrey C. Fox at PPoPP Panel on Computational Grids on May 5 99. Foils prepared May 18 99
Outside Index
Summary of Material
| Computational Grid Panel organized by Calvin Lin (Univ. Texas) |
| Other members Chien, Grimshaw, Kennedy, Kesselman |
| I describe the types of large grain distributed objects one can naturally consider |
| I discuss difference between middle tier and backend programming |
| I discuss a particular type of user interface |
Denote Foils where Image Critical
Denote Foils where HTML is sufficient
Applications and Programming Models for Computational Grids PPoPP Meeting Hilton Hotel Atlanta May 5 99
What Applications are Grids Good For?
Classes of Grid Applications
More Federated Applications
Wedding Memories as a Federated Grid
Multi Tier Computing Model
Programming Middle Tier of a Computational Grid
"Gateway" Project
WebFlow over Globus for NCSA Alliance Quantum Chemistry Application View
Outside Index
Summary of Material
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| Geoffrey Fox |
| Syracuse University NPAC |
| 111 College Place Syracuse NY 13244 4100 |
| 3154432163 |
HTML version of Basic Foils prepared May 18 99
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| Essentially all applications will use some sort of computational grid but only some will use high performance |
"High Performance" can come from several sources
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Most High Performance grids will come from scaling "ordinary grids" which will use commodity solutions.
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| Seamless (one at a time) access to multiple heterogeneous supercomputers -- what users want today |
| "Parameter Studies" (pleasingly parallel) |
| PC, Workstation, Origin 2000/SP2 clusters ("Grid in a box" -- parallel computing built from distributed components) |
| Federated Computing such as Distributed Modeling and Simulation with demands for flexible linkage of largish components but loose not tight coupling |
| TeleMedicine and Distance Education (not high performance?) |
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| Dynamic linking of data, hardware and software needed to solve a particular problem: |
"Application Integration" -- linking the "ᡛ" separate major (SAP, PeopleSoft ..) applications (in typical large corporation) into a "grid"
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| This is similar to classic multidisciplinary application in engineering design and manufacturing as in NASA Power Grid |
| General ambitious DoD project is SBA -- Simulation Based Acquisition |
| Crisis Management: Individual simulation engines (classic closely coupled parallel computers) as one (or few) components in a very large commodity grid which links databases, decision makers, anchor desks(experts), first responders (firefighters in the field) |
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| So any wedding is assigned some sort of Jini (Ninja) compatible bar code included in invitation and available from wedding web site |
| Bride, Groom, Guests and support staff (priests, photographers ..) load bar code into devices ((digital) cameras, hymn books, presents ...) |
| After wedding all involved go home and over next weeks processed photos, unwrapped gifts etc. register with wedding server from sites around the world |
| Services include automatically linking of photos to people (pattern recognition), image correction, generation of thank you letters, production of customized albums etc. |
HTML version of Basic Foils prepared May 18 99 
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| Database |
| Matrix Solver |
| Optimization Service |
| MPP |
| MPP |
| Parallel DB Proxy |
| NEOS Control Optimization |
| Origin 2000 Proxy |
| NetSolve Linear Alg. Server |
| IBM SP2 Proxy |
| Grid Gateway |
| Supporting Seamless Interface |
| Agent-based Choice of Compute Engine |
| Multidisciplinary Control (WebFlow) |
| New Programming Challenges |
| Good Old Programming Challenges |
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| So most users only want one thing -- computers to be easier to use. So we will copy a much reviled model -- Microsoft Word or PowerPoint -- Problem Solving Environments for document preparation |
| Computing abstracted as a set of hierarchical Toolbars Toolbars are defined in XML and rendered in HTML for user interface. XML interpreted on middle tier as some suitable service. |
| Computing Toolbars include user profile, results, visualization (where "command" could be AVS), collaboration, programming model, HPF, Dataflow, resource specification, resource status, code (application specific) |
HTML version of Basic Foils prepared May 18 99
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| Globus |
| DOM/XML |
| Middle Tier Programming |
HTML version of Basic Foils prepared May 18 99
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