β Scribed by Popek G., Walker B.J. (eds.)
No coin nor oath required. For personal study only.
Computer systems consisting of many machines will be the norm within a few years. However, making a collection of machines appear as a single, coherent system - in which the location of files, servers, programs, or users is invisible to users who do not wish to know - is a very difficult problem. LOCUS, a distributed version of the popular operating system Unix, provides an excellent solution. It makes a collection of computers, whether they are workstations or mainframes, as easy to use as a single computer by providing a set of supports for the underlying network that is virtually invisible to users and - applications programs. This "network transparency" dramatically reduces the cost of developing and maintaining software, and considerably improves the user model of the system. It also permits a variety of system configurations, including diskless workstations, full duplex I/O to large mainframes, transparently shared peripherals, and incremental growth from one workstation to a large network including mainframes with no effect on applications software required to take advantage of the altered configurations.In addition to transparent, distributed operation, LOCUS features also include high performance and reliability; full Unix compatibility, support for heterogeneous machines and systems, automatic management of replicated file storage; and architectural extensions to support extensive interprocess communication and internetworking.Contents: The LOCUS Architecture. Distributed Operation and Transparency. The LOCUS Distributed Filesystem. Remote Tasking. Filesystem Recovery. Dynamic Reconfiguration of LOCUS. Heterogeneity. System Management. Appendixes: LOCUS Version Vector Mechnism. LOCUS Internal Network Messages.Gerald Popek is Professor of Computer Science at UCLA and President of Locus Computing Corporation in Santa Monica. The LOCUS Distributed System Architecture is included in the Computer Systems series, edited by Herb Schwetman.
π SIMILAR VOLUMES
Computer systems consisting of many machines will be the norm within a few years. However, making a collection of machines appear as a single, coherent system - in which the location of files, servers, programs, or users is invisible to users who do no
The LOCUS Distributed System Architecture. Has outline in PDF unlike other copies floating around.
This text grew out of notes from a graduate course taught to students in mathematics and mechanical engineering. The goal was to take students who had some basic knowledge of differential equations and lead them through a systematic grounding in the theory of Hamiltonian systems, an introduction to
<p>The primary audience for this book are advanced undergraduate students and graduate students. Computer architecture, as it happened in other fields such as electronics, evolved from the small to the large, that is, it left the realm of low-level hardware constructs, and gained new dimensions, as
The distributed systems architect assembles pieces of hardware that are at least as large as a computer or a network router, and assigns pieces of software that are self-contained - such as Java applets - to those hardware components. As system complexity, size and diversity grow, the probability of