文章基本信息

标题：PUMA: An Operating System for Massively Parallel Systems
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作者：Stephen R. Wheat, Arthur B. Maccabe, Rolf Riesen, David W. Van Dresser ; T. Mack Stallcup
期刊名称：Scientific Programming
印刷版ISSN：1058-9244
出版年度：1994
卷号：3
DOI：10.1155/1994/602764
出版社：Hindawi Publishing Corporation
摘要：This article presents an overview of PUMA (Performance-oriented, User-managed Messaging Architecture), a message-passing kernel for massively parallel systems. Message passing in PUMA is based on portals – an opening in the address space of an application process. Once an application process has established a portal, other processes can write values into the portal using a simple send operation. Because messages are written directly into the address space of the receiving process, there is no need to buffer messages in the PUMA kernel and later copy them into the applications address space. PUMA consists of two components: the quintessential kernel (Q-Kernel) and the process control thread (PCT). Although the PCT provides management decisions, the Q-Kernel controls access and implements the policies specified by the PCT.