DMCA
Toward Large-Scale Shared Memory Multiprocessing (1991)
BibTeX
@MISC{Bennett91towardlarge-scale,
author = {John K. Bennett and John B. Carter and Willy Zwaenepoel},
title = {Toward Large-Scale Shared Memory Multiprocessing},
year = {1991}
}
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Abstract
We are currently investigating two different approaches to scalable shared memory: Munin, a distributed shared memory (DSM) system implemented entirely in software, and Willow, a true shared memory multiprocessor with extensive hardware support for scalability. Munin allows parallel programs written for shared memory multiprocessors to be executed efficiently on distributed memory multiprocessors. Unlike existing DSM systems, which only provide a single mechanism for memory consistency, Munin provides multiple consistency protocols, matching protocol to data object based on the expected pattern of accesses to that object. We call this approach type-specific coherence. Munin also employs a relaxed consistency model to mask network latency and to minimize the number of messages required for keeping memory consistent. Willow is intended to be a true shared memory multiprocessor, providing memory capacity and performance capable of supporting over a thousand commercial microprocessors. The...
Keyphrases
toward large-scale shared memory multiprocessing true shared memory multiprocessor shared memory shared memory multiprocessor multiple consistency protocol single mechanism thousand commercial microprocessor performance capable memory capacity parallel program different approach expected pattern dsm system distributed memory multiprocessor data object memory consistent relaxed consistency model memory consistency approach type-specific coherence extensive hardware support network latency
