Basic HTML version of Foils prepared August 15 98

Foil 17 NPAC Concepts: Pragmatic Object Web

From Java Grande: Role of Java in Large Scale Computations NPACI Summer Institute on Parallel Computing -- August 21 98. by Geoffrey C. Fox
3-(or more)-tier architecture - Web browser front-ends, legacy (e.g. databases, HPC modules) backends; fat (1+tier) middleware
Alternative / competing Middleware models:
  • Java RMI+ EJB (Enterprise Javabean) - single language solution by Sun
  • CORBA - all languages solution by OMG
  • COM - multi-language solution by Microsoft
  • WOM/XML - emergent solution by the Web Consortium
Each model has different tradeoffs
POW attempts at integrating various models and services in terms of multi-protocol middleware servers (JWORB)

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