Concurrency control in groupware systems
SIGMOD '89 Proceedings of the 1989 ACM SIGMOD international conference on Management of data
Lightweight causal and atomic group multicast
ACM Transactions on Computer Systems (TOCS)
Understanding the limitations of causally and totally ordered communication
SOSP '93 Proceedings of the fourteenth ACM symposium on Operating systems principles
Reaching for objects in VR displays: lag and frame rate
ACM Transactions on Computer-Human Interaction (TOCHI)
ACM Transactions on Computer-Human Interaction (TOCHI)
Networked virtual environments: design and implementation
Networked virtual environments: design and implementation
Time, clocks, and the ordering of events in a distributed system
Communications of the ACM
A causality based time management mechanism for federated simulation
Proceedings of the fifteenth workshop on Parallel and distributed simulation
Building Multiuser Interactive Multimedia Environments at MERL
IEEE MultiMedia
Interactive Multiuser VEs in the DIVE System
IEEE MultiMedia
A causal message ordering scheme for distributed embedded real-time systems
SRDS '96 Proceedings of the 15th Symposium on Reliable Distributed Systems
Detecting causal relationships in distributed computations: in search of the holy grail
Distributed Computing
A distributed architecture for multiplayer interactive applications on the Internet
IEEE Network: The Magazine of Global Internetworking
Formalization and strictness of simulation event orderings
Proceedings of the eighteenth workshop on Parallel and distributed simulation
Seven-O'Clock: A New Distributed GVT Algorithm Using Network Atomic Operations
Proceedings of the 19th Workshop on Principles of Advanced and Distributed Simulation
Bias in parallel and distributed simulation systems
WSC '05 Proceedings of the 37th conference on Winter simulation
Eliminating remote message passing in optimistic simulation
Proceedings of the 38th conference on Winter simulation
Critical causal order of events in distributed virtual environments
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
GPC'10 Proceedings of the 5th international conference on Advances in Grid and Pervasive Computing
A use of matrix with GVT computation in optimistic time warp algorithm for parallel simulation
Proceedings of the 15th Communications and Networking Simulation Symposium
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We investigate the causality issue in distributed virtual environments. Causality has been widely studied in parallel and distributed systems. However, most of the work in causality detection and preservation are from a logical time system point of view, which are not generally suitable for distributed virtual environments due to the high cost of the proposed schemes to preserve causality. In this paper, first, critical causal order is defined, which is a relaxation of the "happened before"-based causal relation. Then, causal receive order delivery is proposed with the advantage that both the real-time property of distributed virtual environments and the critical causal order relationship among events are preserved. Finally, an algorithm to achieve causal receive order delivery is given. Our algorithm is easy to implement, and it results in little extra traffic on the network.