Publication

From unreliable objects to reliable objects: The case of atomic registers and consensus

Rachid Guerraoui
2007
Conference Papers

Abstract

A concurrent object is an object that can be concurrently accessed by several processes. It has been shown by Maurice Herlihy that any concurrent object O defined by a sequential specification can be wait-free implemented from reliable atomic registers (shared variables) and consensus objects. Wait-free means that any invocation of an operation of the object O issued by a non-faulty process does terminate, whatever the behavior of the other processes (e.g., despite the fact they are very slow or even have crashed).

Official source

https://infoscience.epfl.ch/entities/publication/04394522-595d-4675-bdce-7206a967c495

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Rachid Guerraoui
2007
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/04394522-595d-4675-bdce-7206a967c495

About this result

Related concepts (32)

Concurrency control

In information technology and computer science, especially in the fields of computer programming, operating systems, multiprocessors, and databases, concurrency control ensures that correct results for concurrent operations are generated, while getting those results as quickly as possible. Computer systems, both software and hardware, consist of modules, or components. Each component is designed to operate correctly, i.e., to obey or to meet certain consistency rules.

Concurrent computing

Concurrent computing is a form of computing in which several computations are executed concurrently—during overlapping time periods—instead of sequentially—with one completing before the next starts. This is a property of a system—whether a program, computer, or a network—where there is a separate execution point or "thread of control" for each process. A concurrent system is one where a computation can advance without waiting for all other computations to complete. Concurrent computing is a form of modular programming.

Concurrency (computer science)

In computer science, concurrency is the ability of different parts or units of a program, algorithm, or problem to be executed out-of-order or in partial order, without affecting the outcome. This allows for parallel execution of the concurrent units, which can significantly improve overall speed of the execution in multi-processor and multi-core systems. In more technical terms, concurrency refers to the decomposability of a program, algorithm, or problem into order-independent or partially-ordered components or units of computation.

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From unreliable objects to reliable objects: The case of atomic registers and consensus

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