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Glenn Ricart | |
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| Born | August 1, 1949 |
| Occupation | Computer scientist |
| Known for | ARPANET pioneer, OSPF |
Glenn Ricart (born August 1, 1949 [1] ) is a computer scientist. [2] He was influential in the development of the Internet (ARPANET) going back to 1969 and early implementation of the TCP/IP protocol. Since then he has been active in technology and business as well as donating his time to philanthropic and educational movements.
Ricart received his B.S. degree in engineering from Case Institute of Technology in 1971, and his M.S. in Computing and Information Sciences from Case Western Reserve University in 1973. He received his doctorate in the University of Maryland Department of Computer Science, which is part of the University of Maryland College of Computer, Mathematical, and Natural Sciences in 1980, mentored by Ashok Agrawala.
The Ricart-Agrawala Algorithm was the result of his dissertation work at the University of Maryland.
Ricart set up what was probably the first Internet Exchange point, the FIX (Federal Internet Exchange) in College Park, Maryland which interconnected the original federal TCP/IP networks and was extended to form MAE-East. Ricart led the team that wrote the code for the first implementation of TCP/IP for the IBM PC. He then secured financial support from IBM for writing the code, and, in addition to its free availability to the education community, arranged for IBM to sell it as IBM's entry into the field (the product was called PC/IP by IBM). He led the team that developed the OSPF reference implementation at the University of Maryland, including Louis Mamakos and Mike Petry. He also led the team that provided and operated the routers for the first NSFNet backbone.
From 1971 to 1982, he was a lead software engineer at the National Institutes of Health, developing the first e-mail program for the TOPS-10 (PDP-10) operating system in 1973. From 1982 to 1993, he headed academic computing at the University of Maryland. In 1984, it became the first campus to adopt TCP/IP campus-wide and use it to connect all academic minicomputers and mainframes.
In 1985 to 1989, he was instrumental in bringing the Internet to South America, helping to bring the first BITNET and Internet connections to Brazil in partnership with CNPq, Argentina via the University of Buenos Aires, and Chile by first connecting REUNA. He instructed the first networking workshop for Latin and South America (ESLARED) and several succeeding workshops.
From 1993 to 1995, Ricart was a Program Manager at DARPA for operating systems, middleware, and end-system security. From 1995 to 1999, he was chief technology officer at Novell, [3] helping to move that company from the proprietary Xerox Network Systems protocol to also embrace TCP/IP. In 1999, he co-founded CenterBeam, a start-up based on remote system management driven by directory services.
From 2003 to 2009, he was the founding managing director of the PricewaterhouseCoopers Center for Advanced Research based in San Jose, California.
In October 2009 Ricart was named president and CEO of National LambdaRail, the high-speed networking platform owned by the U.S. research and education community. [4] On September 7, 2010, he announced his resignation from National LambdaRail due to strategic differences with the board. [5]
In 2010 he presented the Bernard Price Memorial Lecture in South Africa.
Ricart is a co-founder of US Ignite, a nonprofit organization launched in 2012 with support from the National Science Foundation and numerous public and private stakeholders. [6] US Ignite's mission is to foster the development of broadband-intensive applications with an eye toward "smart city" and other public good uses. [7]
He previously served on the boards of the Internet Society, BITNET, CACI, First USA Financial Services, Santa Cruz Operation, and NASULGC. He is the CTO of Artkick - a service that displays artwork on televisions.
In 2013, he was inducted into the Internet Hall of Fame. [8]
The history of the Internet has its origin in the efforts of scientists and engineers to build and interconnect computer networks. The Internet Protocol Suite, the set of rules used to communicate between networks and devices on the Internet, arose from research and development in the United States and involved international collaboration, particularly with researchers in the United Kingdom and France.
The Internet protocol suite, commonly known as TCP/IP, is a framework for organizing the set of communication protocols used in the Internet and similar computer networks according to functional criteria. The foundational protocols in the suite are the Transmission Control Protocol (TCP), the User Datagram Protocol (UDP), and the Internet Protocol (IP). Early versions of this networking model were known as the Department of Defense (DoD) model because the research and development were funded by the United States Department of Defense through DARPA.
A local area network (LAN) is a computer network that interconnects computers within a limited area such as a residence, school, laboratory, university campus or office building. By contrast, a wide area network (WAN) not only covers a larger geographic distance, but also generally involves leased telecommunication circuits.
Vinton Gray Cerf is an American Internet pioneer and is recognized as one of "the fathers of the Internet", sharing this title with TCP/IP co-developer Bob Kahn.
In telecommunications, packet switching is a method of grouping data into packets that are transmitted over a digital network. Packets are made of a header and a payload. Data in the header is used by networking hardware to direct the packet to its destination, where the payload is extracted and used by an operating system, application software, or higher layer protocols. Packet switching is the primary basis for data communications in computer networks worldwide.
NetBIOS is an acronym for Network Basic Input/Output System. It provides services related to the session layer of the OSI model allowing applications on separate computers to communicate over a local area network. As strictly an API, NetBIOS is not a networking protocol. Operating systems of the 1980s ran NetBIOS over IEEE 802.2 and IPX/SPX using the NetBIOS Frames (NBF) and NetBIOS over IPX/SPX (NBX) protocols, respectively. In modern networks, NetBIOS normally runs over TCP/IP via the NetBIOS over TCP/IP (NBT) protocol. This results in each computer in the network having both an IP address and a NetBIOS name corresponding to a host name. NetBIOS is also used for identifying system names in TCP/IP (Windows). Simply stated, it is a protocol that allows communication of data for files and printers through the Session Layer of the OSI Model in a LAN.
Ungermann-Bass, also known as UB and UB Networks, was a computer networking company in the 1980s to 1990s. Located in Santa Clara, California, UB was the first large networking company independent of any computer manufacturer. Along with competitors 3Com and Sytek, UB was responsible for starting the networking business in Silicon Valley in 1979. UB was founded by Ralph Ungermann and Charlie Bass. John Davidson, vice president of engineering, was one of the creators of NCP, the transport protocol of the ARPANET before TCP.
Robert Elliot Kahn is an American electrical engineer who, along with Vint Cerf, first proposed the Transmission Control Protocol (TCP) and the Internet Protocol (IP), the fundamental communication protocols at the heart of the Internet.
The Computer Science Network (CSNET) was a computer network that began operation in 1981 in the United States. Its purpose was to extend networking benefits, for computer science departments at academic and research institutions that could not be directly connected to ARPANET, due to funding or authorization limitations. It played a significant role in spreading awareness of, and access to, national networking and was a major milestone on the path to development of the global Internet. CSNET was funded by the National Science Foundation for an initial three-year period from 1981 to 1984.
National LambdaRail (NLR) was a 12,000-mile (19,000 km), high-speed national computer network owned and operated by the U.S. research and education community. In November 2011, the control of NLR was purchased from its university membership by a billionaire Patrick Soon-Shiong. NLR ceased operations in March 2014.
The Ricart–Agrawala algorithm is an algorithm for mutual exclusion on a distributed system. This algorithm is an extension and optimization of Lamport's Distributed Mutual Exclusion Algorithm, by removing the need for messages. It was developed by computer scientists Glenn Ricart and Ashok Agrawala.
Douglas Earl Comer is a professor of computer science at Purdue University, where he teaches courses on operating systems and computer networks. He has written numerous research papers and textbooks, and currently heads several networking research projects. He has been involved in TCP/IP and internetworking since the late 1970s, and is an internationally recognized authority. He designed and implemented X25NET and Cypress networks, and the Xinu operating system. He is director of the Internetworking Research Group at Purdue, editor of Software - Practice and Experience, and a former member of the Internet Architecture Board. Comer completed the original version of Xinu in 1979. Since then, Xinu has been expanded and ported to a wide variety of platforms, including: IBM PC, Macintosh, Digital Equipment Corporation VAX and DECstation 3100, Sun Microsystems Sun-2, Sun-3 and SPARCstations, and Intel Pentium. It has been used as the basis for many research projects. Furthermore, Xinu has been used as an embedded system in products by companies such as Motorola, Mitsubishi, Hewlett-Packard, and Lexmark.
BITNET was a co-operative U.S. university computer network founded in 1981 by Ira Fuchs at the City University of New York (CUNY) and Greydon Freeman at Yale University. The first network link was between CUNY and Yale.
Merit Network, Inc., is a nonprofit member-governed organization providing high-performance computer networking and related services to educational, government, health care, and nonprofit organizations, primarily in Michigan. Created in 1966, Merit operates the longest running regional computer network in the United States.
Ira H. Fuchs is an internationally known authority on technology innovation in higher education and is a co-founder of BITNET, an important precursor of the Internet. He was inducted into the Internet Hall of Fame in 2017. Since 2012 he has been President of BITNET, LLC a consulting firm specializing in online learning and other applications of technology in higher education.
Edson C. Hendricks, an IBM computer scientist, developed RSCS, fundamental software that powered the world’s largest network prior to the Internet and which directly influenced both Internet development and user acceptance of networking between independently managed organizations. Within IBM, the resulting network later became known as VNET and grew to 4000 nodes. In the academic community, VNET formed the base for BITNET which extended to 500 organizations and 3,000 nodes. VNET was also the networking design underpinning EARN in Europe, and NETNORTH in Canada.
Galina Kofman is a computer scientist and business executive. She was the author of the Kerberos protocol for various IBM systems. Kofman also authored FTP for IBM VM/CMS and OS/2. She received two IBM CEO Outstanding Technical Achievements awards and holds a patent on grid applications. Kofman is an executive at Recyclebank, a green company that rewards people for recycling.
The European Academic and Research Network (EARN) was a computer network connecting universities and research institutions across Europe, and was connected in 1983 via transatlantic circuits and a gateway funded by IBM to BITNET, its peer in the United States.
The Wollongong Group (TWG) was one of the first companies to sell commercial software products based on the Unix operating system. It was founded to market a port of Unix Version 6 developed by researchers at the University of Wollongong, Australia. The company was active in Palo Alto, California from 1980 to 1995.
Ashok Agrawala is Professor in the Department of Computer Science at University of Maryland at College Park and Director of the Maryland Information and Network Dynamics (MIND) Lab. He is the author of seven books and over two hundred peer-reviewed publications. Glenn Ricart and Ashok Agrawala developed the Ricart-Agrawala Algorithm. The Ricart-Agrawala Algorithm is an algorithm for mutual exclusion on a distributed system. This algorithm is an extension and optimization of Lamport's Distributed Mutual Exclusion Algorithm.
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