Publication

The causal ordering abstraction and a simple way to implement it

André Schiper
1991
Journal Articles

Abstract

Control in distributed systems is mainly introduced to reduce nondeterminism. This nondeterminism is due on the one hand to the asynchronous execution of the processes located on the various sites of the system, and on the other hand to the asynchronous nature of the communication channels. In order to limit the asynchronism due to communication channels, a new message ordering relation, known as causal ordering, has been introduced by Birman and Joseph. After giving some examples of this causal ordering, we propose a simple algorithm to implement it. This algorithm is based on message sequence numbering. A proof of the correctness of the algorithm is also given.

Official source

https://infoscience.epfl.ch/entities/publication/3d61c672-382c-4bb4-9dbe-fc88637c681b

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André Schiper
1991
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/3d61c672-382c-4bb4-9dbe-fc88637c681b

About this result

Related concepts (32)

Algorithm

In mathematics and computer science, an algorithm (ˈælɡərɪðəm) is a finite sequence of rigorous instructions, typically used to solve a class of specific problems or to perform a computation. Algorithms are used as specifications for performing calculations and data processing. More advanced algorithms can use conditionals to divert the code execution through various routes (referred to as automated decision-making) and deduce valid inferences (referred to as automated reasoning), achieving automation eventually.

Proof theory

Proof theory is a major branch of mathematical logic and theoretical computer science within which proofs are treated as formal mathematical objects, facilitating their analysis by mathematical techniques. Proofs are typically presented as inductively-defined data structures such as lists, boxed lists, or trees, which are constructed according to the axioms and rules of inference of a given logical system. Consequently, proof theory is syntactic in nature, in contrast to model theory, which is semantic in nature.

Asynchronous I/O

In computer science, asynchronous I/O (also non-sequential I/O) is a form of input/output processing that permits other processing to continue before the transmission has finished. A name used for asynchronous I/O in the Windows API is overlapped I/O. Input and output (I/O) operations on a computer can be extremely slow compared to the processing of data. An I/O device can incorporate mechanical devices that must physically move, such as a hard drive seeking a track to read or write; this is often orders of magnitude slower than the switching of electric current.

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