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Given by Geoffrey C. Fox at DoD HPC Modernization Users Group Meeting Monterey California on June 9 99. Foils prepared June 11 99
Outside Index
Summary of Material
| Builds on Web-based problem solving environment built for CEWES PET: LMS Landscape Management System |
| Core technology synergistic with ARL and CEWES FMS PET WebHLA distributed object middleware |
OSC NPAC Nicholls Gateway project funded by ASC to produce
|
| Core system in alpha test today and SC99 will have fully functional demonstration |
| Built with multi tier architecture using secure CORBA at middle tier and sophisticated WebFlow Java front end allowing task composition |
| All object interfaces defined in XML |
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Gateway PET Project and DoD Metacomputing Dod Modernization Users Group Meeting Metacomputing Panel June 9 99
Gateway Project in a Nutshell
LMS Goals and Front-End
WebFlow on Globus -- LMS at CEWES
What does Gateway do for you?
"Gateway" Architecture
Multi Tier Computing Model
Programming Middle Tier of a Computational Grid
Another Gateway Prototype: Quantum Chemistry PSE for NCSA Alliance
Gateway PSE Example: CCM
Current Gateway Interface
Gateway Support of Simple Standalone Codes
Gateway and IMT and FMS
WebFlow in Gateway
Gateway Security Model
Outside Index
Summary of Material
HTML version of Basic Foils prepared June 11 99 
Full HTML Index
| Geoffrey Fox |
| Syracuse University NPAC |
| 111 College Place Syracuse NY 13244 4100 |
| 3154432163 |
HTML version of Basic Foils prepared June 11 99
Full HTML Index
| Builds on Web-based problem solving environment built for CEWES PET: LMS Landscape Management System |
| Core technology synergistic with ARL and CEWES FMS PET WebHLA distributed object middleware |
OSC NPAC Nicholls Gateway project funded by ASC to produce
|
| Core system in alpha test today and SC99 will have fully functional demonstration |
| Built with multi tier architecture using secure CORBA at middle tier and sophisticated WebFlow Java front end allowing task composition |
| All object interfaces defined in XML |
HTML version of Basic Foils prepared June 11 99 
Full HTML Index
Web based Interface Supporting
|
HTML version of Basic Foils prepared June 11 99
Full HTML Index
| WebFlow |
| server |
| WebFlow |
| server |
| WebFlow |
| server |
| EDYS |
| CASC2D |
| Data Retrieval |
| High Performance SubSystem |
| CASC2D |
| proxy |
| IIOP |
| Web Browser |
| Data Wizard |
| WMS interface |
| Toolbar |
| HTTP |
| WMS |
| File Transfer |
| File Transfer |
| GLOBUS |
| Internet |
| WebFlow modules |
| (back-end) |
| WebFlow |
| middle-tier |
| WebFlow applet |
| (front-end) |
HTML version of Basic Foils prepared June 11 99
Full HTML Index
Toolkit to build high level application specific web based problem solving environments
|
| Simple strategy to convert existing codes into distributed objects that can be seamlessly launched |
| Simple default job status displays |
| Architecture naturally supports collaboration (using shared events and TangoInteractive) and visualization if structured as a multi tier service conforming to XML interfaces |
Compositional Programming of modules
|
HTML version of Basic Foils prepared June 11 99
Full HTML Index
HTML version of Basic Foils prepared June 11 99
Full HTML Index
| 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) |
| Gateway Programming Environment |
| Good Old Programming Tools |
HTML version of Basic Foils prepared June 11 99
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| We will copy a much reviled model -- Microsoft Word or PowerPoint -- Problem Solving Environments for document preparation -- for Gateway programming toolbox |
| 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 June 11 99
Full HTML Index
HTML version of Basic Foils prepared June 11 99
Full HTML Index
| Ken Flurchick, http://www.osc.edu/~kenf/theGateway |
| Gateway Computing Process |
| 1. Enter the Gateway system |
| 2. Define your problem |
| 3. Identify resources (software and hardware) |
| 4. Create input file |
| 5. Run your application |
| 6. Analyze results |
HTML version of Basic Foils prepared June 11 99
Full HTML Index
HTML version of Basic Foils prepared June 11 99 
Full HTML Index
| Core capabilities allow simple wrapping of existing codes |
| Program objects is defined as an XML file e.g. my favorite physics simulation on my PC becomes: <program name="physicssimulation1"> <run domain="npac" machine="maryland" type="pc" os="nt" >c:\myprogs\a.out</run> <input button="prog1" toolbar="physics" type="htmlform" > <name>userinput</name> <field default="10" maximum="100000" >iterations</field> ............ </input> <output> ...</output> </program> |
Gateway generates a distributed object with
|
HTML version of Basic Foils prepared June 11 99
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| The distributed object Middle Tier in Gateway supports the Java/CORBA version of HLA (DMSO's distributed object model) and RTI (DMSO's Run Time Infrastructure to supported distributed modeling and simulation) built by NPAC |
So one can naturally build applications that federate HPCC applications with FMS simulations
|
IMT requires real time data streams and databases
|
HTML version of Basic Foils prepared June 11 99
Full HTML Index
| WebFlow server is given by a hierarchy of containers and components |
| These are CORBA objects written in Java acting if necessary as proxies to backend resources |
| WebFlow server hosts users and services |
| Each user maintains a number of applications composed of custom modules and common services |
| WebFlow supports both object based and dataflow computing model with visual interface at client and both tasks and their interrelationship defined in XML |
HTML version of Basic Foils prepared June 11 99
Full HTML Index
| SECIOP |
| Front End Applet |
| SECIOP |
| Kerberos authentication |
| and authorization |
| Gatekeeper |
| delegation |
| HPCC resources |
| GSSAPI |
| GSSAPI |
| Layer 1: secure Web |
| Layer 2: secure CORBA |
| Layer 3: Secure access to resources |
| Policies defined by resource owners |
| Can use Public Key Infrastructure but for HPC Modernization |
| use SecurID and Kerberized Workstation |
| Globus |