PUMA: An Operating System for Massively Parallel Systems

Issue title: Operating system Support for Massively Parallel Computer Architectures

Article type: Research Article

Authors: Wheat, Stephen R. | Maccabe, Arthur B. | Riesen, Rolf | Van Dresser, David W. | Stallcup, T. Mack

Affiliations: Massively Parallel Computing Research Laboratory, Sandia National Laboratory, Albuquerque, NM 87185-5800 | Department of Computer Science, The University of New Mexico, Albuquerque, NM 87131-1386 | Intel Supercomputer Systems Division; on-site at Sandia National Laboratories

Abstract: 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.

Journal: Scientific Programming, vol. 3, no. 4, pp. 275-288, 1994