Memory Management for Large-scale NUMA Multiprocessors
Memory Management for Large-scale NUMA Multiprocessors

Author: T. J. LeBlanc

Publisher:

Published: 1989

Total Pages: 20

ISBN-13:

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Abstract: "Large-scale shared-memory multiprocessors such as the BBN Butterfly and IBM RP3 introduce a new level in the memory hierarchy: multiple physical memories with different memory access times. An operating system for these NUMA (NonUniform Memory Access) multiprocessors should provide traditional virtual memory management, facilitate dynamic and widespread memory sharing, and minimize the apparent disparity between local and nonlocal memory. In addition, the implementation must be scalable to configurations with hundreds or thousands of processors. This paper describes memory management in the Psyche multiprocessor operating system, under development at the University of Rochester

Evaluating Memory System Performance of a Large Scale NUMA Multiprocessor
Evaluating Memory System Performance of a Large Scale NUMA Multiprocessor

Author: Karim Harzallah

Publisher:

Published: 1993

Total Pages: 23

ISBN-13:

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Abstract: "The effectiveness of large scale computing depends to a great extent on the performance of the memory system. As shared memory multiprocessors grow in size, their memory hierarchy deepens, resulting in a design with non-uniform latencies. In this paper, we explore the implications of multi-valued memory latencies. In particular, we study the effect of a non-uniform traffic distribution on a hierarchical large scale NUMA multiprocessor named Hector. Memory analysis is of interest because memory is a frequent source of poor performance in large scale multiprocessors. We have developed an analytical model that includes the effects of increased contention for system resources, and the impact of the arbitration algorithm on the network traffic. Our analysis has been validated with a detailed simulator. Also, we have examined two techniques for reducing memory latency. We assess the potential performance gains from replication of data and investigate the improvement in memory utilization by allowing memory request buffering. Furthermore, we studied the sensitivity of the memory performance to changes in background traffic. We found that inter-station traffic has a significant performance effect."

Memory Management in Symunix II
Memory Management in Symunix II

Author: Jan Edler

Publisher: Forgotten Books

Published: 2016-10-01

Total Pages: 28

ISBN-13: 9781333809560

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Excerpt from Memory Management in Symunix II: A Design for Large-Scale Shared Memory Multiprocessors While various vendors and independent research groups have adapted unix and other operating systems for multiprocessor architectures, relatively little work has been done in anticipation of the software requirements of very large-scale shared memory machines containing thousands of processors. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Emergency Management
Emergency Management

Author: Burak Eksioglu

Publisher: BoD – Books on Demand

Published: 2012-01-27

Total Pages: 106

ISBN-13: 9533079894

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After the large-scale disasters that we have witnessed in the recent past, it has become apparent that complex and coordinated emergency management systems are required for efficient and effective relief efforts. Such management systems can only be developed by involving many scientists and practitioners from multiple fields. Thus, this book on emergency management discusses various issues, such as the impact of human behavior, development of hardware and software architectures, cyber security concerns, dynamic process of guiding evacuees and routing vehicles, supply allocation, and vehicle routing problems in preparing for, and responding to large scale emergencies. The book is designed to be useful to students, researchers and engineers in all academic areas, but particularly for those in the fields of computer science, operations research, and human factor. We also hope that this book will become a useful reference for practitioners.

Memory Management in Symunix II: A Design for Large-Scale Shared Memory Multiprocessors
Memory Management in Symunix II: A Design for Large-Scale Shared Memory Multiprocessors

Author: Jan Edler

Publisher: Palala Press

Published: 2018-03-03

Total Pages: 24

ISBN-13: 9781379104308

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