Accession Number:

ADA164860

Title:

Process Synchronization and Data Communication between Processes in Real Time Local Area Networks.

Descriptive Note:

Master's thesis,

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s):

Report Date:

1985-12-01

Pagination or Media Count:

113.0

Abstract:

This thesis extends the multi-computer real-time executive, MCORTEX. The multiple cluster system RTC Real Time Cluster Star, consisting of clusters of single board computers INTEL iSBC 8612A, which are connected via an Ethernet Local Area Network, serves as a hardware basis for the implementation of extended MCORTEX. The extension upgrades MCORTEX to system-wide synchronization and general data communication between any processes in the system. An intercluster shared memory model is developed, that partially replicates intracluster shared memory, such that shared data replication is minimized and the systems processing speed is maximized. This implementation, by transmitting produced shared data to all consuming clusters as soon as possible after procuction, guarantees that only cluster local hits occur in the system. Shared memory space is used efficiently by transmitting shared data to consuming clusters only, and by the abiltity to store shared data contiguously in intracluster shared memory. Keywords include Distributed processing MULTIBUS CPM-86 Ethernet Local Area Network Shared Memory Process Synchronization Data communication. Theses

Subject Categories:

  • Non-Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE