In 2004 Blue Gene made a significant impact by introducing an ultra-scalable computer with a focus on low power. After that, Blue Gene/L maintained the number 1 spot on the top500 list for an unprecedented 7 lists. In 2007 Blue Gene/P was announced and a peak 1 PF machine installed at Juelich, and Blue Gene/P garnered the top position on the green 500 list. At Supercomputing 2011 we announced B...

This paper presents a comparative study of the performance of three operating systems that run on the personal computer architecture derived from the IBM-PC. The operating systems, Windows for Workgroups (tm), Windows NT (tm), and NetBSD (a freely available UNIX (tm) variant) cover a broad range of system functionality and user requirements, from a single address space model to full protection ...

To address national needs for computer security education, many universities have incorporated computer and security courses into their undergraduate and graduate curricula. In these courses, students learn how to design, implement, analyze, test, and operate a system or a network to achieve security. Pedagogical research has shown that effective laboratory exercises are critically important to...

The Pilot operating system provides a single-user, single-language environment for higher level software on a powerful personal computer. Its features include virtual memory, a large "fiat" file system, streams, network communication facilities, and concurrent programming support. Pilot thus provides rather more powerful facilities than are normally associated with personal computers. The exact...

Recently Trusted Platform Module (TPM) is emerged as a new solution to secure computers and other systems. It is a small microchip that enables encryption and stores authentication information in computer motherboard. This paper presents the initiative of trust computing and an overview of TPM along with architecture and security features. We also discuss the applications and future of TPM. In ...

Part I is a general description of a simple operatirg system, which runs in a virtual machine (implemented on ~ Teal machine by an interpreter). 056 copes wi th only one user at a tiJlle, and is not a multiprogramming system: many major problews associated with large operating systems have therefore been avoided or considerably simplified. It nevertheless has several features of in:erest. inclu...

The S.A. Lebedev Institute developed operating system for the AS-6 distributed computing system (OS AS-6) in the 1970s. The OS AS-6 consisted of peer operating systems of separate machines making up the AS-6 computer system. Those operating systems interacted through a uniform interface. The OS AS-6 facilitated interaction between computation processes on the nodes of the AS-6 system through a ...