Learn More
We present a new model of parallel computation—the LogGP model—and use it to analyze a number of algorithms, most notably, the single node scatter (one-to-all personalized broadcast). The LogGP model is an extension of the LogP model for parallel computation [CKP+93] which abstracts the communication of fixed-sized short messages through the use of four(More)
In this article we show how to extend a wide range of functionality of standard operation systems completely at the user level. Our approach works by intercepting selected system calls at the user level, using tracing facilities such as the /proc file system provided by many Unix operating systems. The behavior of some intercepted system calls is then(More)
The Scalable Coherent Interface (SCI) is a recent communication standard for cluster interconnects. We study the use of SCI in a high-performance parallel computing setting, using a cluster of UltraSparcs connected via Dolphin SCI SBus-2 adapters. We chose SCI as network fabric since it offers very low latencies and high bandwidth. In this paper, we study(More)
In this paper we show how to extend the functional-ity of standard operating systems completely at the user level. Our approach works by intercepting selected system calls at the user level, using tracing facilities such as the /proc file system provided by many Unix operating systems. The behavior of some intercepted system calls is then modified to(More)
The Internet, in particular the WorldWide Web , continues to expand at an amazing pace. We propose a new infrastructure, SuperWeb, to harness global resources, such as CPU cycles or disk storage, and make them available to every user on the Internet. SuperWeb has the potential for solving parallel supercomputing applications involving thousands of(More)
The Internet, best known by most users as the WorldWide Web , continues to expand at an amazing pace. We propose a new infrastructure to harness the combined resources, such as CPU cycles or disk storage, and make them available to everyone interested. This infrastructure has the potential for solving parallel supercomputing applications involving thousands(More)
In this paper we discuss our preliminary experience with implementing active messages and Split-C on a cluster of workstations connected via Scalable Coherent Interface (SCI). Our experiments were conducted on a cluster of UltraSparcs connected via SBus-2 SCI adapter cards and an SCI switch. We present performance measurements and discuss several avenues(More)