Towards Scalable 1024 Processor Shared Memory Systems

Abstract

Over the past 3 years, NASA Ames has been involved in a cooperative effort with SGI to develop the largest single system image systems available. Currently a 1024 Origin3OOO is under development, with first boot expected later in the summer of 2001. This paper discusses some early results with a 512p Origin3OOO system and some arcane IRIX system calls that can dramatically improve scaling performance.