Dynamic Sub-Systems Management in a Closely Coupled Architecture

Résumé

Since the arrivai of the distributed operating systems such as MACH and CHORUS with the Loosely Coupled or Closely Coupled multiprocessor systems, a new concept appeared: the server. In the common literature, the designers explain how to access a server service through the existing mechanism of ports and messages. However from the performance point of view, the state-of-the-art relates only few words about the strategies taken into account when (un)loading a server and when (un)binding a server. In addition, there already was a concept of sub-systems among several operating systems. The first step of the present thesis bas been to integrate the server as a kind of sub-system into a sub-systems architecture and into a sub-systems topology. The scope of this thesis is to elaborate a management of Sub-Systems which permits to exploit the parallelism provided by the servers as efficiently as possible. My management strategies have been designed during a training period at Siemens-Nixdorf on the evolution of the BS2000 operating system to a distributed operating system in a closely-coupled multiprocessor system.

la date de réponse	1991
langue originale	Anglais
L'institution diplômante	Universite de Namur
Superviseur	Jean RAMAEKERS (Promoteur)