ISSN:
1433-299X
Keywords:
Fault-tolerance
;
Distributed replicated systems
;
Communicating sequential processes
;
Nondeterminism
;
Partial and total correctness
;
Divergence
Source:
Springer Online Journal Archives 1860-2000
Topics:
Computer Science
Notes:
Abstract This paper studies the correctness of distributed systems made up of replicated processes that communicate by message passing. Processes are described within the divergence model of CSP. The notion of correctness introduced is based on a relation that formally expresses the conformance of an implementation process with the target process it is intended to implement. A weak and a strong version of the relation are introduced, aimed at treating acyclic and cyclic process networks respectively. Both allow the study of (total) correctness and may cope with non-deterministic targets and implementations. We then show how a target process may be implemented (in the formal sense introduced) by replicating it in a set of copies, a majority of which is non-faulty.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01211616
Permalink
