منابع مشابه
Load Sharing with Parallel Priority Queues
For maximum efficiency in a multiprocessor system the load should be shared evenly over all processors, that is, there should be no idle processors when tasks are available. The delay in a load sharing algorithm is the larger of the maximum time that any processor can be idle before a task is assigned to it, and the maximum time that it must wait to be relieved of an excess task. A simple paral...
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This paper introduces the Parallel Priority Queue (PPQ) abstract data type. A PPQ stores a set of integer-valued items and provides operations such as insertion of n new items or deletion of the n smallest ones. Algorithms for realizing PPQ operations on an n-processor CREW-PRAM are based on two new data structures, the n-Bandwidth-Heap (n-H) and the n-Bandwidth-Leftist-Heap (n-L), that are obt...
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We present time and work optimal priority queues for the CREW PRAM, supporting FindMin in constant time with one proces-and DecreaseKey in constant time with O(log n) processors. A priority queue can be build in time O(log n) with O(n= log n) processors and k elements can be inserted into a priority queue in time O(log k) with O((log n + k)= log k) processors. With a slowdown of O(log log n) in...
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We present simple randomized algorithms for parallel priority queues on distributed memory machines. Inserting O(n) elements or deleting the O(n) out of m smallest elements using n pocessors requires O (
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We examine the design, implementation, and experimental analysis of parallel priority queues for network simulation. We consider: a) distributed splay trees using MPI, b) concurrent heaps using shared memory atomic locks, and c) a new, more general concurrent data structure based on distributed sorted lists, which is designed to provide dynamically balanced work allocation (with automatic or ma...
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ژورنال
عنوان ژورنال: Journal of Computer and System Sciences
سال: 1995
ISSN: 0022-0000
DOI: 10.1006/jcss.1995.1007