Filters








43 Hits in 3.5 sec

VAXcluster: a closely-coupled distributed system

Nancy P. Kronenberg, Henry M. Levy, William D. Strecker
1986 ACM Transactions on Computer Systems  
A VAXcluster is a highly available and extensible configuration of VAX computers that operate as a single system.  ...  The software is a distributed version of the VAX/VMS operating system that uses a distributed lock manager to synchronize access to shared resources.  ...  ACKNOWLEDGMENTS VAXclusters are the result of work done by many individuals in several engineering groups at Digital Equipment Corporation.  ... 
doi:10.1145/214419.214421 fatcat:2dd63ndehrfbvbzztuqoxi65qe

Adaptive Locking Strategies in a Multi-node Data Sharing Environment

Ashok M. Joshi
1991 Very Large Data Bases Conference  
required as well as the number of lock requests that are required per transaction. l'his makes it possible to reduce the 1ockinR overhead considerably without sacrificing correctness or concurrency in a  ...  A VAXcluster system is a "closely coupled" structure of standard VAX computers (nodes) that has characteristics of both loosely coupled and tightly coupled systems.  ...  The VAXCluster and VMS Distributed Lock Manager (DLM) Rdb/VMS is a full-function relational database management system developed by Digital Equipment Corporation that provides access to the database in  ... 
dblp:conf/vldb/Joshi91 fatcat:3pgrln6psbekvkt7bdp33v2teq

Large-scale 0–1 linear programming on distributed workstations

Timothy L. Cannon, Karla L. Hoffman
1990 Annals of Operations Research  
The current version of the ABCOPT system uses a modified subset of the XMP software package for linear programming written by Roy Marsten of the University of Arizona (Marsten [34] ).  ...  Hoffman, 0-1 programming on distributed workstations and to remove redundant rows and columns from the matrix. A full description of the techniques is found in Hoffman and Padberg [23] .  ...  Hoffman, 0-1 programming on distributed workstations 191 storage elements, all linked in a closely coupled arrangement.  ... 
doi:10.1007/bf02023053 fatcat:x5rh2q5et5eqlev7hi2xyauuiy

Trends in distributed and cooperative database management [chapter]

K. Küspert, E. Rahm
1990 Lecture Notes in Computer Science  
Closely coupled systems aim at a more efficient cooperation between systems, e.g. by utilizing shared semiconductor stores.  ...  A distributed lock protocol is employed in DIGITAL's VaxCluster/KLS86/.  ... 
doi:10.1007/3-540-53397-4_40 fatcat:4g4a6sjcyrez7fhfkb2kjff2v4

High-performance network and channel-based storage

R.H. Katz
1992 Proceedings of the IEEE  
In the traditional mainframe-centered view of a computer system, storage devices are coupled to the system through complex hardware subsystems called I/O channels.  ...  A highly tuned remote file system on a 10 megabit (Mbit) per second Ethernet can provide perhaps 500K bytes per second to remote client applications.  ...  The VAXCluster is a collection of hardware and software services that closely couple together VAX computers and Hierarchical Storage Controllers (HSCs).  ... 
doi:10.1109/5.158597 fatcat:jm7thtxk6bfoxiyckb3s3h7cre

A Model for Space-Correlated Failures in Large-Scale Distributed Systems [chapter]

Matthieu Gallet, Nezih Yigitbasi, Bahman Javadi, Derrick Kondo, Alexandru Iosup, Dick Epema
2010 Lecture Notes in Computer Science  
Moreover, perhaps as a result of system complexity, in distributed systems a single failure can trigger within a short time span several more failures, forming a group of time-correlated failures.  ...  For each of these seven systems, we provide a set of model parameters that can be used in research studies or for tuning distributed systems.  ...  The validation uses failure traces taken from fifteen diverse distributed systems; 4. We validate our model using real failure traces, and present for them the extracted model parameters (Section 5).  ... 
doi:10.1007/978-3-642-15277-1_10 fatcat:il5gk6ssyjd6nfcbwndc4mtybi

DataMesh, house-building, and distributed systems technology

John Wilkes
1992 Proceedings of the 5th workshop on ACM SIGOPS European workshop Models and paradigms for distributed systems structuring - EW 5  
System design reconsidered as architecture The past several years have shown a steady increase in knowledge about building (distributed) computer systems.  ...  Consider the analogy of a distributed computer system as an ensemble of buildings. Rooms might represent address spaces; their occupants, threads; buildings the nodes of the distributed system.  ...  The former is a result of our desires to design a system capable of scaling up to a couple of hundred disk drives.  ... 
doi:10.1145/506378.506428 dblp:conf/sigopsE/Wilkes92 fatcat:pswfgr57sjd4lf4xftmcr2ywim

PATHWORKS for VMS File Server

Edward W. Bresnahan, Siu Yin Cheng
1992 Digital technical journal of Digital Equipment Corporation  
Introduction Coupled with the PATHWORKS for DOS or PATHWORKS for OS/2 product, PATHWORKS for VMS creates a distributed computing environment, based on a clientserver model.  ...  This paper describes the design and implementation of a nondedicated personal computer file server (PCFS) on a VAX VMS computer system.  ...  PATHWORKS software implements its own lock management algorithm to resolve file access conflicts in a VAXcluster system.  ... 
dblp:journals/dtj/BresnahanC92 fatcat:xsy3ggszk5fybfy54zbgurcmae

A Brief History of Warehouse-Scale Computing

Luiz Andre Barroso
2021 IEEE Micro  
That family begins with VAXclusters 2 in the 1980s, a networked collection of VAX computers with a distributed lock manager that attempted to present itself as a single system to the user.  ...  Ã If it takes you much more than a couple of sentences to explain the problem you are trying to solve, you should seriously consider the possibility of it not being that important to be solved.  ... 
doi:10.1109/mm.2021.3055379 fatcat:ytueexwfdjbydmui665a3fgurm

First operations of the LNS heavy ions facility

L Calabretta, G Ciavola, G Cuttone, S Gammino, P Gmaj, E Migneco, G Raia, D Rifuggiato, A Rovelli, J Sura, V Scuderi, E Acerbi (+8 others)
1996 Nuclear Instruments and Methods in Physics Research Section A : Accelerators, Spectrometers, Detectors and Associated Equipment  
The facility is based on a 15 MV HVEC tandem and a K = 800 superconducting cyclotron as booster. During the last year, the facility came into operation.  ...  A heavy ion facility is now available at Laboratorio Nazionale de1 Sud (LNS) of Catania. It can deliver beams with an energy up to 100 MeV/amu.  ...  The control system has been distributed according to functional criteria with functional accelerator subsystems controlled by a single control unit.  ... 
doi:10.1016/s0168-9002(96)00503-7 fatcat:4uio7uk7mbeihiblfgkv3dfxoi

Distributed Computing [chapter]

Manuel Delfino
2020 Particle Physics Reference Library  
distributed systems, and providing starting points in order to seek further information on the subject.  ...  The aim of this chapter is to introduce the reader to the basic concepts of distributed computing in the context of particle physics, allowing a better understanding of what is behind the scenes when using  ...  Interconnection of clusters via a Grid or a federated Cloud is used instead. 13 Kronenberg, Nancy P., Henry M. Levy, and William D. Strecker. "VAXcluster: a closely-coupled distributed system."  ... 
doi:10.1007/978-3-030-35318-6_14 fatcat:ph2o7uwap5hw5iegwiegemca64

Empirical performance evaluation of concurrency and coherency control protocols for database sharing systems

Erhard Rahm
1993 ACM Transactions on Database Systems  
The nodes of a DB-sharing system are locally coupled via a high-speed interconnect and share a common database at the disk level. This is also known as a "shared disk" approach.  ...  Database Sharing (DB-sharing) refers to a general approach for building a distributed high performance transaction system.  ...  The simulation system was implemented by M. Luzcak, G. Petry, and P. Scheug with the help of U. Lanzer and V. Bohn.  ... 
doi:10.1145/151634.151639 fatcat:up6m3xv7cbcaba7hwppbqqbvma

Orchestra: Extensible Block-Level Support for Resource and Data Sharing in Networked Storage Systems

Michail D. Flouris, Renaud Lachaize, Angelos Bilas
2008 2008 14th IEEE International Conference on Parallel and Distributed Systems  
Current solutions satisfy typically the first two requirements through a distributed file-system, resulting in monolithic, hard-to-manage storage systems.  ...  We implement Orchestra under Linux and use it to build a shared cluster file-system.  ...  We see that 0FS performs, in the local case, close to current file-systems. Performance of distributed setups Next, we examine the scalability of 0FS in distributed setups.  ... 
doi:10.1109/icpads.2008.110 dblp:conf/icpads/FlourisLB08 fatcat:drpwggtmdvdyhb6cqriwbcq6nm

LEP to an fcc-­‐ee – A Bridge Too Far?

SHIERS JAMIE
2020 Zenodo  
Specifically, as a result, the interested reader should be aware of what electronic documents are available together with direct pointers to be able to find them.  ...  Acknowledgements The authors of the individual papers and reports summarized in this document deserve all the credit for the hard work and constant innovations that were a key characteristic of computing  ...  The system is composed entirely of hardware which is commercially available and maintained, namely a VAXcluster using 12 VAXstation 3100 as batch processors.  ... 
doi:10.5281/zenodo.4139582 fatcat:6h6ckn6nibfnzbqzjx6vmgs6r4

Design of the TruCluster Multicomputer System for the Digital UNIX Environment

Wayne M. Cardoza, Frederick S. Glover, William E. Snaman Jr.
1996 Digital technical journal of Digital Equipment Corporation  
The primary goal for the first release of the TruCluster system for the Digital UNIX operating system was to develop a high-performance commercial database server environment running on a cluster of several  ...  Although other aspects of providing a single-system view of a cluster are important, they are secondary objectives and will be phased into the product over time.  ...  The TruCluster product is a collection of loosely coupled, general-purpose computer systems connected by a high-performance interconnect.  ... 
dblp:journals/dtj/CardozaGS96 fatcat:us6lyrb6tvd5nhduzwh3p5u47i
« Previous Showing results 1 — 15 out of 43 results