Scientific Programming

Scientific Programming / 1994 / Article
Special Issue

Operating system Support for Massively Parallel Computer Architectures

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Volume 3 |Article ID 602764 |

Stephen R. Wheat, Arthur B. Maccabe, Rolf Riesen, David W. Van Dresser, T. Mack Stallcup, "PUMA: An Operating System for Massively Parallel Systems", Scientific Programming, vol. 3, Article ID 602764, 14 pages, 1994.

PUMA: An Operating System for Massively Parallel Systems

Received05 Apr 1994
Accepted05 May 1994


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.

Copyright © 1994 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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