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Transarc
Transarc Corporation was a private Pittsburgh-based software company founded in 1989 by Jeffrey Eppinger, Michael L. Kazar, Alfred Spector, and Dean Thompson of Carnegie Mellon University. Transarc commercialized the Andrew File System (AFS), now OpenAFS, which was originally developed at Carnegie Mellon. As a member of the Open Software Foundation (later The Open Group), Transarc developed the DFS distributed filesystem component of the Distributed Computing Environment (DCE) that was sold by Open Group members. Other products included the distributed transaction processing Transaction processing is information processing in computer science that is divided into individual, indivisible operations called ''transactions''. Each transaction must succeed or fail as a complete unit; it can never be only partially compl ... system Encina (a basis for IBM's UNIX-based CICS products; included in IBM's TXSeries and later WebSphere), and the Solaris binary distribution of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alfred Spector
Alfred Zalmon Spector is an American computer scientist and research manager. He is a visiting scholar in the MIT EECS Department and was previously CTO of Two Sigma Investments. Before that, he was Vice President of Research and Special Initiatives at Google. Education Spector received his Bachelor of Arts degree in Applied Mathematics from Harvard University, and his PhD in computer science from Stanford University in 1981. His research explored communication architectures for building multiprocessors out of network-linked computers and included measurements of remote procedure call operations on experimental Ethernet. His dissertation was titled ''Multiprocessing Architectures for Local Computer Networks'', and his advisor was Forest Baskett III. Career Spector was an associate professor of computer science at Carnegie Mellon University (CMU). While there, he served as doctoral advisor to Randy Pausch, Jeff Eppinger and Joshua Bloch and seven others. Spector was a fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
OpenAFS
OpenAFS is an open-source implementation of the Andrew distributed file system (AFS). AFS was originally developed at Carnegie Mellon University, and developed as a commercial product by the Transarc Corporation, which was subsequently acquired by IBM. At ''LinuxWorld'' on 15 August 2000, IBM announced archived their plans to release a version of their commercial AFS product under the . This became OpenAFS. Today, OpenAFS is actively developed for a wide range of operating system families including: AIX, |
Andrew File System
The Andrew File System (AFS) is a distributed file system which uses a set of trusted servers to present a homogeneous, location-transparent file name space to all the client workstations. It was developed by Carnegie Mellon University as part of the Andrew Project. Originally named "Vice", "Andrew" refers to Andrew Carnegie and Andrew Mellon. Its primary use is in distributed computing. Features AFS has several benefits over traditional networked file systems, particularly in the areas of security and scalability. One enterprise AFS deployment at Morgan Stanley exceeds 25,000 clients. AFS uses Kerberos for authentication, and implements access control lists on directories for users and groups. Each client caches files on the local filesystem for increased speed on subsequent requests for the same file. This also allows limited filesystem access in the event of a server crash or a network outage. AFS uses the Weak Consistency model. Read and write operations on an open fil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Encina (software)
Encina was a DCE-based transaction processing system developed by Transarc, who were later acquired by IBM. It was used as the basis of IBM TXSeries, which is a variant of CICS IBM CICS (Customer Information Control System) is a family of mixed-language application servers that provide online transaction management and connectivity for applications on IBM mainframe systems under z/OS and z/VSE. CICS family products ... for non-mainframe platforms (however, in newer versions of TXSeries, the Encina component has been removed.) References Transaction processing IBM software {{software-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jeff Eppinger
Jeffrey Lee Eppinger (born ca 1960) is an American computer scientist, entrepreneur and Professor of the Practice at the Carnegie Mellon University, School of Computer Science, Institute for Software Research. Eppinger was a student at Carnegie Mellon University where he earned a Bachelor of Science in 1982, a Master of Science in 1987, and a PhD in Computer Science in 1988. His advisors were Alfred Spector and Richard Rashid. Eppinger was a co-founder of Transarc Corporation, which was bought by IBM in 1994. At Carnegie Mellon, Eppinger's dissertation demonstrated the integration of the Mach Operating System's virtual memory with the Camelot Transaction System. This recoverable virtual memory concept was subsequently used to implement the Coda File System. In 1983, Eppinger won the George E. Forsythe Award for his research in binary search trees. Eppinger had made empirical studies of their behaviour under random deletions and insertions.Donald Knuth - '' TAOCP Volume 3, pp. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DCE Distributed File System
{{Distinguish, Distributed File System (Microsoft) The DCE Distributed File System (DCE/DFS)"File Systems in a Distributed Computing Environment" Open Software Foundation, July 1991 is the remote file access protocol used with the . It was a variant of (AFS), based on the AFS Version 3.0 protocol that was developed commercially by |
Distributed Computing Environment
In computing, the Distributed Computing Environment (DCE) software system was developed in the early 1990s from the work of the Open Software Foundation (OSF), a consortium (founded in 1988) that included Apollo Computer (part of Hewlett-Packard from 1989), IBM, Digital Equipment Corporation, and others. The DCE supplies a framework and a toolkit for developing client/server applications. The framework includes: * a remote procedure call (RPC) mechanism known as DCE/RPC * a naming (directory) service * a time service * an authentication service * a distributed file system (DFS) known as DCE/DFS DCE represented a big step in the direction of standardization of architectures, which had previously been manufacturer-dependent. Like the OSI model, DCE has not seen much success in practical implementation; however, its underlying concepts have had more substantial influence over subsequent efforts. History Open Software Foundation (OSF) came about to a large degree as part of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pittsburgh
Pittsburgh ( ) is a city in the Commonwealth (U.S. state), Commonwealth of Pennsylvania, United States, and the county seat of Allegheny County, Pennsylvania, Allegheny County. It is the most populous city in both Allegheny County and Western Pennsylvania, the List of municipalities in Pennsylvania#Municipalities, second-most populous city in Pennsylvania behind Philadelphia, and the List of United States cities by population, 68th-largest city in the U.S. with a population of 302,971 as of the 2020 United States census, 2020 census. The city anchors the Pittsburgh metropolitan area of Western Pennsylvania; its population of 2.37 million is the largest in both the Ohio Valley and Appalachia, the Pennsylvania metropolitan areas, second-largest in Pennsylvania, and the List of metropolitan statistical areas, 27th-largest in the U.S. It is the principal city of the greater Pittsburgh–New Castle–Weirton combined statistical area that extends into Ohio and West Virginia. Pitts ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WebSphere
IBM WebSphere refers to a brand of proprietary computer software products in the genre of enterprise software known as "application and integration middleware". These software products are used by end-users to create and integrate applications with other applications. IBM WebSphere has been available to the general market since 1998. History IBM introduced the first product in this brand, ''IBM WebSphere Performance Pack'', in June 1998. this original component forms a part of IBM WebSphere Application Server Network Deployment, which itself is one of many WebSphere-branded enterprise software products. IBM WebSphere Software The following complete list of IBM WebSphere software uses IBM classifications. Several tools appear in more than one category. IBM has also classified WebSphere software according to the capabilities offered for individual industries. Application Infrastructure Main Products * IBM WebSphere Application Server - a web application server * IBM Workl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Defunct Companies Based In Pennsylvania
{{Disambiguation ...
Defunct (no longer in use or active) may refer to: * ''Defunct'' (video game), 2014 * Zombie process or defunct process, in Unix-like operating systems See also * * :Former entities * End-of-life product * Obsolescence Obsolescence is the state of being which occurs when an object, service, or practice is no longer maintained or required even though it may still be in good working order. It usually happens when something that is more efficient or less risky r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solaris (operating System)
Solaris is a proprietary Unix operating system originally developed by Sun Microsystems. After the Sun acquisition by Oracle in 2010, it was renamed Oracle Solaris. Solaris superseded the company's earlier SunOS in 1993, and became known for its scalability, especially on SPARC systems, and for originating many innovative features such as DTrace, ZFS and Time Slider. Solaris supports SPARC and x86-64 workstations and servers from Oracle and other vendors. Solaris was registered as compliant with the Single UNIX Specification until 29 April 2019. Historically, Solaris was developed as proprietary software. In June 2005, Sun Microsystems released most of the codebase under the CDDL license, and founded the OpenSolaris open-source project. With OpenSolaris, Sun wanted to build a developer and user community around the software. After the acquisition of Sun Microsystems in January 2010, Oracle decided to discontinue the OpenSolaris distribution and the development model ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
