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Given by Geoffrey C. Fox at Gateway Workshop Aberdeen Maryland on 24-25 May 99. Foils prepared May 26 99
Outside Index
Summary of Material
| Discussion at Gateway Meeting Aberdeen including notes and brainstorming on future of Gateway |
Denote Foils where HTML is sufficient
Gateway Workshop Discussion http://www.npac.syr.edu/users/gcf/gatewayarchmay99
Abstract of Gateway Discussion
Gateway Discussion
Gateway Discussion II
Gateway Discussion III
Gateway Discussion IV
NCSA
Gateway Discussion V
Gateway Discussion VI
CRPC Project
Issues I
Issues II
Issues III
Plan for Gateway
Outside Index
Summary of Material
HTML version of Basic Foils prepared May 26 99 
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| NPAC |
| 111 College Place |
| Syracuse NY 13244 4100 |
| Phone: 3154432163 |
| May 24 25 1999 |
| Aberdeen Md. |
| Geoffrey Fox |
| Syracuse University |
HTML version of Basic Foils prepared May 26 99
Full HTML Index
| Discussion at Gateway Meeting Aberdeen including notes and brainstorming on future of Gateway |
HTML version of Basic Foils prepared May 26 99
Full HTML Index
| There are existing databases at MSRC's with lists of installed software such as Gaussian |
| These need to be fed in (with Jini like mechanism) to Gateway system -- note each MSRC will and can use different internal formats but export to Gateway in common format |
| Gateway has a user/group profile, history mechanism cf. Tango needs |
| Currently by hand event model to be replaced by CORBA event model |
| there is a tag called connection in task specification invoking events |
HTML version of Basic Foils prepared May 26 99
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| Ken's "database" is really an XML file or equivalent |
| What is front end model for an application |
| Edit data file; enter data into HTML form; take defaults from user database/profile |
| Net result is abstract task specification |
What happens if there is a failure
|
| Exception Event Handling should be part of Gateway |
| Role of Scientific Notebook |
HTML version of Basic Foils prepared May 26 99
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| XML makes searching easier |
| Ken has a training XML structure |
| xmlspy program analyzes XML documents; creates DTD's |
input parameters need
|
| history needs to record where user was in documentation via bookmark -- her state |
HTML version of Basic Foils prepared May 26 99
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Accounting needs to be globalized
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Chemical Engineering workbench want to edit code rather than input data through files
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| In visualization HDF defines data model at level roughly of Fortran or C variables includes name=value |
| DICE and DoE (more generally) are defining higher level constructs like sets and grids |
| There are no agreement on visualization output like isosurfaces |
HTML version of Basic Foils prepared May 26 99
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Multiple layers controlled on Server side with XML and HTML
|
| Uses Perl CGI to convert XML to HTML using capabilities of browser down to 3.0 |
| Will probably use flat files to store user state so it is restored to previous state |
| Lotus Notes supports COM and DCOM objects -- Apache won't do this |
| Security and User Interface are key features |
HTML version of Basic Foils prepared May 26 99
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| RIB 2.0 switching to MiniSQL |
| Linking RIB Software and Hardware data models with Globus so can invoke software from RIB |
| Interoperation between RIB's done by exporting XML files |
| ARL and ASC have (separate from RIB) software configuration databases |
| ASCI Scientific Data Management SDM Project (30 people within DoE!) will be linked with RIB |
| NetSolve linked to Scirun for computational steering |
| NetSolve is Client Server not hierarchical |
| Will have Globus and non Globus version |
| Netbuild |
| ARL NetSolve proposal is standalone |
| ASC Proposal is to break NetSolve into client, agent (middle tier), backend (NetSolve Server) |
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| DoD Metacomputing: 4 Tier so that can separate Configuration Management and Server Control |
| Phase 1: Define and Establish Testbeds |
| Phase 2: Initial Implementation |
| Phase 3: Initial Deployment |
| Metacomputing Workshop Late Summer 99 sets up working group and identifies issues |
| Phase 1: Set up CCM and IMT as test applications |
| Install and use Legion and Globus |
| NSF NASA DoE Linkage |
| Phase 2: SRC = MSRC +DC issues, further applications |
| Phase 3: Deploy meta-queuing, training |
HTML version of Basic Foils prepared May 26 99
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Subsurface IPARS with multiple models
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| CEWES Shallow Water 3 codes |
| PARSIM hooked to PV3 now |
All commercial codes of this type linked to Oracle
|
| Database and Simulation |
| Visualization -- Tekplot and AVS (Immersadesk plus wand) |
| AVS 2 weeks |
| Argonne using lower level visualization tools? |
| PARSIM with Gateway AVS Database -- NPAC OSC |
| IPARS NetSolve and Netbuild -- UTK |
| Review where we are September |
HTML version of Basic Foils prepared May 26 99
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| Program running v development |
Programs with files input and output
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| Databases |
Programming models
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| Defining Interfaces |
HTML version of Basic Foils prepared May 26 99
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| CCM |
Visualization
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Multiple backends
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T and E (IMT) Application
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services
|
| Link to Information services |
HTML version of Basic Foils prepared May 26 99
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| SC99 critical for buy in |
Easy to add applications
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| Multidisciplinary support |
| Need simple program distributer talking to Globus |
| In general link to ASCI Alliance NASA .... Efforts |
Quantify and elaborate Gateway Architecture Interfaces Standards
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HTML version of Basic Foils prepared May 26 99
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| Base Plan: CCM plus core Gateway plus visualization accessing multiple backends for SC99 |
| Option I: Study and Documentation of Architecture, Interfaces and Use -- define Gateway compliance of all three layers |
| Option II: Some demonstration of ease of adding additional codes or backend resources to system either within PSE or with default PSE |
| Option III: Add a "distributer" to give intelligence to choice of backend |