A VLSI Architecture for Concurrent Data Structures

J. W. Dally (Autor)

Buch | Hardcover

244 Seiten

1987
Kluwer Academic Publishers (Verlag)
978-0-89838-235-8 (ISBN)

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Concurrent data structures simplify the development of concurrent programs by encapsulating commonly used mechanisms for synchronization and commu nication into data structures. This thesis develops a notation for describing concurrent data structures, presents examples of concurrent data structures, and describes an architecture to support concurrent data structures. Concurrent Smalltalk (CST), a derivative of Smalltalk-80 with extensions for concurrency, is developed to describe concurrent data structures. CST allows the programmer to specify objects that are distributed over the nodes of a concurrent computer. These distributed objects have many constituent objects and thus can process many messages simultaneously. They are the foundation upon which concurrent data structures are built. The balanced cube is a concurrent data structure for ordered sets. The set is distributed by a balanced recursive partition that maps to the subcubes of a binary 7lrcube using a Gray code. A search algorithm, VW search, based on the distance properties of the Gray code, searches a balanced cube in O(log N) time. Because it does not have the root bottleneck that limits all tree-based data structures to 0(1) concurrency, the balanced cube achieves 0C.:N) con currency. Considering graphs as concurrent data structures, graph algorithms are pre sented for the shortest path problem, the max-flow problem, and graph parti tioning. These algorithms introduce new synchronization techniques to achieve better performance than existing algorithms.

1 Introduction.- 1.1 Original Results.- 1.2 Motivation.- 1.3 Background.- 1.4 Concurrent Computers.- 1.5 Summary.- 2 Concurrent Smalltalk.- 2.1 Object-Oriented Programming.- 2.2 Distributed Objects.- 2.3 Concurrency.- 2.4 Locks.- 2.5 Blocks.- 2.6 Performance Metrics.- 2.7 Summary.- 3 The Balanced Cube.- 3.1 Data Structure.- 3.2 Search.- 3.3 Insert.- 3.4 Delete.- 3.5 Balance.- 3.6 Extension to B-Cubes.- 3.7 Experimental Results.- 3.8 Applications.- 3.9 Summary.- 4 Graph Algorithms.- 4.1 Nomenclature.- 4.2 Shortest Path Problems.- 4.3 The Max-Flow Problem.- 4.4 Graph Partitioning.- 4.5 Summary.- 5 Architecture.- 5.1 Characteristics of Concurrent Algorithms.- 5.2 Technology.- 5.3 Concurrent Computer Interconnection Networks.- 5.4 A Message-Driven Processor.- 5.5 Object Experts.- 5.6 Summary.- 6 Conclusion.- A Summary of Concurrent Smalltalk.- B Unordered Sets.- B.1 Dictionaries.- B.2 Union-Find Sets.- C On-Chip Wire Delay.

Erscheint lt. Verlag	30.9.1987
Reihe/Serie	The Springer International Series in Engineering and Computer Science ; 27
Zusatzinfo	XX, 244 p.
Verlagsort	New York
Sprache	englisch
Maße	155 x 235 mm
Themenwelt	Mathematik / Informatik ► Informatik ► Datenbanken
	Mathematik / Informatik ► Informatik ► Theorie / Studium
	Technik ► Elektrotechnik / Energietechnik
ISBN-10	0-89838-235-1 / 0898382351
ISBN-13	978-0-89838-235-8 / 9780898382358
Zustand	Neuware