Efficient distributed event-driven simulations of multiple-loop networks
Communications of the ACM
The cost of conservative synchronization in parallel discrete event simulations
Journal of the ACM (JACM)
Design and implementation of HLA time management in the RTI version F.0
Proceedings of the 29th conference on Winter simulation
Parallel and Distribution Simulation Systems
Parallel and Distribution Simulation Systems
Design of High Performance RTI Software
DS-RT '00 Proceedings of the Fourth IEEE International Workshop on Distributed Simulation and Real-Time Applications
Distributed simulation, algorithms and performance analysis (load balancing, distributed processing)
Distributed simulation, algorithms and performance analysis (load balancing, distributed processing)
The Anatomy of the Grid: Enabling Scalable Virtual Organizations
International Journal of High Performance Computing Applications
Distributed Simulation: A Case Study in Design and Verification of Distributed Programs
IEEE Transactions on Software Engineering
A Hybrid HLA Time Management Algorithm Based on Both Conditional and Unconditional Information
Proceedings of the 22nd Workshop on Principles of Advanced and Distributed Simulation
Improving performance by replicating simulations with alternative synchronization approaches
Proceedings of the 40th Conference on Winter Simulation
Time management for virtual worlds based on constrained communication model
Proceedings of the 9th Annual Workshop on Network and Systems Support for Games
A time management optimization framework for large-scale distributed hardware-in-the-loop simulation
Proceedings of the 2013 ACM SIGSIM conference on Principles of advanced discrete simulation
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The High-Level Architecture (HLA), which is the IEEE standard for distributed simulation, defines six service groups. The Time Management (TM) service group ensures a Time-Stamp-Ordered (TSO) message delivery sequence and correct time advancement of each simulation component (federate) in a HLA-based distributed simulation application (federation). To control time advancement of a federation, a distributed TM algorithm requires each regulating federate to periodically propagate its local time information to all constrained federates for their respective calculation of the Greatest Available Logical Time (GALT). The time information propagated is called conditional information or unconditional information depending on whether it can be guaranteed to be true conditionally or unconditionally. A traditional distributed TM algorithm can be either synchronous or asynchronous. In general, a synchronous algorithm utilizes conditional information while an asynchronous algorithm utilizes unconditional information. However, both synchronous and asynchronous algorithms have their own drawbacks and thus cannot be used for all federation scenarios. To resolve the drawback of each algorithm, this paper proposes a hybrid TM algorithm by combining synchronous and asynchronous algorithms. The three algorithms have been incorporated into a Run-Time Infrastructure (RTI) and experimental results show that the hybrid algorithm effectively combines the advantages of both synchronous and asynchronous algorithms. We also compare the proposed hybrid TM algorithm with the TM algorithm implemented in the Federated Simulations Development Kit (FDK), which also uses both conditional and unconditional information. The hybrid TM algorithm is more scalable than FDKâ聙聶s TM algorithm with respect to the total number of federates in a federation, because FDKâ聙聶s TM algorithm has the overhead of redundant GALT calculations.