TRAVLER Simulation Environment
See also the
ARPA
TRAVLER page or the
UCLA
TRAVLER project summary.
(Project funding information.).
Here is the abstract of the poster on
TRAVLER Simulation
Environment at the UCLA CSD Research Review (15th Feb. 1996).
Objective
The goal of the TRAVLER
project is to contribute critical technologies to develop a
transparent virtual networking environment for mobile
computing.
The goal of the simulation research is to
design and implement a parallel, heterogenous simulation
environment to both evaluate and monitor the mobile
computing environment. Our specific interest is to
predict the impact of the interaction between the
networking (e.g. connectivity, communication substrate,
network protocols) and file management (e.g. predictive
caching, replication) components on the desired quality of
service for the user.
Although models are needed to evaluate the performance of
the proposed environment, they will also be an important
component of the operational system. Many of the services
that we envisage, e.g. predictive caching or adaptibility
of the network interface may require regular predcitions on
the future state of a system component under an estimated
work-load and/or system configuration. The inclusion of
a simplified modeling capability in the operational system
will allow the system to dynamically and continuously
evaluate the impact of various policies and select the most
suitable alternative.
Approach
We plan to leverage ongoing research in the ARPA-supported
WAMIS and SESAME research
projects to provide a parallel, hybrid, real-time
simulation environment built on the Maisie simulation
language. (Click here to see
how the projects interrelate).
The hybrid environment will support
parallel execution of simulation models and
the operational prototype of the proposed virtual
networking framework in an integrated environment.
Deadline-based schedulers will be incorporated to
support real-time and interactive model execution.
Accomplishments
The architecture of a simulation and implementation environment,
NetSimPro, for nomadic and wireless system components has
been designed and components of the system have been implemented.
Algorithms for hybrid simulation models have been designed and a
prototype implementation has been completed.
Publications
- A Hierarchical Simulation Environment for Mobile Wireless
Networks
R. Bagrodia, M. Gerla, L. Kleinrock, J. Short, and T.-C. Tsai;
Proceedings of the 1995 Winter Simulation Conference,
(To Appear).
- Mobile Wireless Network System Simulation,
J. Short, R. Bagrodia, and L. Kleinrock;
ACM First International Conference on Mobile
Computing and Networking, Proceedings, pp. 195-209,
Berkeley, CA, 14-15 November 1995.
- A Unified Framework for Conservative And Optimistic
Distributed Simulation, V. Jha and R. Bagrodia;
Proceedings of the 8th Workshop on Parallel and
Distributed Simulations - PADS'94, D.K. Arvind, R.
Bagrodia, and J. Y-B. Lin (Eds.), July 6-8, 1994, Edinburgh,
Scotland, U.K., pp. 12-19.
- MIDAS: Integrated Design and Performance Evaluation of
Distributed Systems; R. Bagrodia and C.-C. Shen;
IEEE Transactions on Software Engineering, October, 1991,
Vol. 7(10), pp. 1042-1058.