Concurrency control in CIAO

Author

Sung, Un-Jae ; Yang, Jae-Heon ; Wohn, Kwang-Yun

Author_Institution

Dept. of Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea

fYear

1999

fDate

13-17 Mar 1999

Firstpage

22

Lastpage

28

Abstract

This paper is concerned with the concurrency control for collaborative virtual environments. In particular, we describe how concurrent actions are coordinated in a multi-user, large-scale 3-D layout system CIAO. In contrast to many existing systems that sacrifice responsiveness in order to maintain consistency, CIAO achieves optimal response and notification time without compromising consistency. The optimal responsiveness is achieved by a new multicast-based, optimistic concurrency control mechanism. Even operations on a group of related objects do not entail any latency for concurrency control. We also present the multi-user interfaces of CIAO that provide some sense of isolation as well as rich awareness

Keywords

concurrency control; distributed processing; groupware; virtual reality; CIAO; collaborative virtual environments; concurrency control; multi-user interfaces; multi-user large-scale 3D layout system; notification time; optimal response; optimal responsiveness; Collaboration; Computer science; Concurrency control; Delay; Electronic commerce; Large-scale systems; Peer to peer computing; Time factors; Urban planning; Virtual environment;

fLanguage

English

Publisher

ieee

Conference_Titel

Virtual Reality, 1999. Proceedings., IEEE

Conference_Location

Houston, TX

ISSN

1087-8270

Print_ISBN

0-7695-0093-5

Type

conf

DOI

10.1109/VR.1999.756919

Filename

756919