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The Distribution Subsystem

Erik Klintskog and Anna Neiderud

Mozart provides support for distributed programming. This is realized by a Distribution Subsystem that offers communication with an arbitrary number of sites, a modular design that allows customization, communication over multiple platforms, and reliable message delivery and fault tolerance; all this with high throughput through an efficient implementation.

To allow application programmers to more efficiently utilize distributed programming an overview of the Distribution Subsystem with references to other documentation is presented by this document.

• 1 Introduction
  • 1.1 Layered Design
  • 1.2 Outline

• 2 Connection Establishment
  • 2.1 Bootstrapping a Connection
  • 2.2 Dynamic Connection Establishment through Connect-Accept-Pairs
  • 2.3 Automatic Connection Opening and Closing

• 3 Entities and Protocols - a Background
  • 3.1 Distribution of References
  • 3.2 Consistency Protocols
  • 3.3 Distribution of Mozart Entities
  • 3.4 Distributed Memory Management

• 4 Efficient Implementation
  • 4.1 Throughput
  • 4.2 Resource Usage
  • 4.3 Zero Impact Implementation of the Distribution Subsystem

• 5 Failure
  • 5.1 Handling Faults from Mozart
  • 5.2 Fault Detection
    • 5.2.1 Permanent Fault
    • 5.2.2 Temporary Faults
  • 5.3 Fault Tolerance
  • 5.4 Perm and Temp on the Internet

• 6 Monitoring Tools
  • 6.1 The Distribution Panel
  • 6.2 The Oz Message Tracer
  • 6.3 The Mozart Distribution-Subsystem Simulator

• 7 Interfaces