[CAnet - news] Cyber-infrastructure for Distributed Simulation and Modeling

For more information on this item please visit my blog at 
http://billstarnaud.blogspot.com/
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[Here is some excellent papers of the power of SOA, web services and grids
in support of research in distributed simulation and modeling with multiple
computational node connected over a network-  BSA]

For all the papers on this topic please see:
http://www.sce.carleton.ca/faculty/wainer/UpcomingPubs.htm


ABSTRACT
DEVS is a Modeling and Simulation formalism that has been used to study the
dynamics of discrete event systems. Cell-DEVS is a
DEVS-based formalism that defines the cell space as a group of
DEVS models connected together. This work presents the design
and implementation of a distributed simulation engine based on
CD++; a modeling and simulation toolkit capable of executing
DEVS and Cell-DEVS models. The proposed simulation engine
follows the conservative approach for synchronization among the
nodes, and takes advantage of web service technologies in order
to execute complex models using the resources available in a grid
environment. In addition, it allows for the integration with other
systems using standard web service tools. The performance of the
engine depends on the network connectivity among the nodes;
which can be commodity Internet connections, or dedicated pointto-
point links created using User Controlled Light Path (UCLP).
UCLP is a web service-based network management tool used by
grid applications to allocate bandwidth on demand.

1. INTRODUCTION
Modeling and simulation (M&S) plays an important role in
studying complex natural and artificial systems. For some
systems, analytical analysis is not always feasible due to the
complexity pertinent to them, for others, it is too dangerous or
impractical to experiment with them. One of the fields of M&S is
discrete event simulation which is related to studying systems that
exist in finite set of discrete states over continuous periods of
time. Some examples of these systems include customer queues in
a bank, computer networks, and manufacturing facilities.
Discrete Event System Specification (DEVS)  is a
modeling and simulation formalism that has been used to study
discrete event systems. It depends on modeling the system as
hierarchal components, each of which has input and output ports
to interact with other components and with the external
environment

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