PADS

Networked and mobile entertainment requires an R&D agenda that has importance for both the entertainment and serious games industries. In this presentation, we will discuss that research agenda including infrastructure, network and mobile games; ...

A joint project between the California and New Mexico branches of Sandia National Laboratories has demonstrated the formation of joint real-time federations of both distributed simulations and distributed simulation users under a common scenario. Two ...

An ad hoc distributed simulation is a collection of autonomous on-line simulations brought together to model an operational system. They offer the potential of increased accuracy, responsiveness, and robustness compared to centralized approaches. They ...

This paper proposes a second order accurate, Adams- Bashforth type, asynchronous integration scheme for numerically solving systems of ordinary differential equations. The method has three aspects; a local integration rule with third order truncation ...

The efficient integration of ordinary differential equations (ODEs) is an important topic in continuous and hybrid systems research. Current solutions involve variable step size solvers based on synchronous and asynchronous approaches. In this paper we ...

The formulation of multiple-time-step integrators can provide substantial computational savings for mechanical systems with multiple time scales. However, the scope of these savings may be severely limited by the range of allowable time step choices. In ...

This paper describes an activity based design pattern for solving partial differential equations. The pattern can be applied to any explicit or implicit single-step numerical method to construct an asynchronous modification with improved execution ...

In many real time interactive simulations the problem of interest management is that of filtering updates through application-specified range queries. This "associative' form of memory access is often implemented more simply as a reference memory access ...

The High Level Architecture (HLA) for distributed simulation was proposed by the Defense Modeling and Simulation Office of the Department of Defense (DOD) in order to support interoperability among simulations as well as reuse of simulation models. One ...

Simulation is a low cost and safe alternative to solve complex problems in various areas. To promote reuse and interoperability of simulation applications and link geographically dispersed simulation components, distributed simulation was introduced. ...

We present, in a unifying way, the main components of three asynchronous event-driven algorithms for simulating physical systems of interacting particles. The first example, hard-particle molecular dynamics (MD), is well-known. We also present a ...

In the context of biological complex systems multi-agent simulation, we present an interaction-agentmodel for reaction-diffusion problems that enables interaction with the simulation during the execution, and we establish a mathematical validation for ...

The computer power required in the simulation of mutually cooperating systems in the physical sciences is huge. Therefore, it is common to simulate one system and treat others as parameters or environmental conditions to the simulated system. Macro-...

Understanding emergent behavior(s) exhibited in simulations poses an interesting challenge. Emergence can represent a valid behavior arising from seemingly unrelated phenomena, or it can reflect an error in a model or its implementation. We propose a ...

Mobile Ad-hoc Networks (MANETs) are used for emergency situations like disaster-relief, military applications, and emergency medical situations. These applications make MANETs attractive targets for cyber- attacks and make the development of counter-...

High-fidelity simulations of mixed wired and wireless network systems are dependent on detailed simulation models, especially in the lower layers of the network stack. However, detailed modeling can result in prohibitive computation cost. In recent ...

We examine a parallel processing method for simulations of large-scale networks with a hybrid traffic representation combining both a time-stepped fluid model and a discrete-event packet-oriented model. This method benefits from the observation that the ...

In recent years, many researchers have run simulations of the Internet. The Internet's inherent heterogeneity and constantly changing nature make it difficult to construct a realistic, yet computationally feasible model. In the construction of any model,...

The Local Time Warp (LTW) model was one of the novel approaches to distributed simulation presented in early 90s. While several similar schemes had emerged afterwards, no implementation and performance analysis of LTW were offered. This paper provides ...

The traditional rollback mechanism deployed in optimistic simulation is state-saving. More recently, the method of reverse computation has been proposed to reduce the amount of memory consumed by state-saving. This method computes the reverse code for ...

A study is presented in applying optimistic parallel discrete event simulation techniques using reverse execution to perform instruction-level simulations of distributed memory multi-processor systems. A static program analysis approach is described to ...

SimBA (Simulator of BOINC Applications) is a discrete event simulator that models the main functions of BOINC, which is a well-known framework used in Volunteer Computing (VC) projects. SimBA simulates the generation and distribution of tasks that are ...

Hybrid computing systems consisting of multiple platform types (e.g., general purpose processors, FPGAs etc.) are increasingly being used to achieve higher performance and lower costs than can be obtained with homogeneous systems (e.g., processor ...

Many partitioning algorithms have been proposed for distributed VLSI simulation. Typically, they make use of a gate level netlist, and attempt to achieve a minimal cut size subject to a load balance constraint. The algorithm executes on a hypergraph ...

The performance of distributed simulation depends very much on the partitioning of the simulation model among the participating hosts. Usually, when starting a simulation run, an initial partitioning is determined by taking into account the available ...