PADS

As an alternative to spatial parallelization of simulation models, time-parallel simulation offers the potential for massive parallelism with a high level of independence between the parallel processes. Unfortunately, due to inherent problems, the ...

Neural systems are composed of a large number of highly-connected neurons and are widely simulated within the neurological community. In this paper, we examine the application of parallel discrete event simulation techniques to networks of a complex ...

Efficient computer simulation of complex physical phenomena has long been challenging due to their multi-physics and multi-scale nature. In contrast to traditional time-stepped execution methods, we describe an approach using optimistic parallel ...

In this paper we introduce a new concept, network atomic operations (NAOs) to create a zero-cost consistent cut. Using NAOs, we define a wall-clock-time driven GVT algorithm called Seven OýClock that is an extension of Fujimotoýs shared memory GVT ...

Parallelising sequential discrete event simulation programs is often a tedious process, with no guarantee for speedup. This paper describes a performance analyser tool developed to predict the execution performance of parallel discrete event simulation ...

A novel micro-kernel approach to building parallel/distributed simulation systems is presented. Using this approach, a unified system architecture is developed for incorporating multiple types of simulation processes. The processes hold potential to ...

Internet worm spread is a phenomenon involving millions of hosts, who interact in complex and diverse environment. Scanning speed of each infected host depends on its resources and the defenses at work in its network. Aggressive worms further interact ...

For worms with known signatures, properly configured firewalls can prevent infection of a network from the outside. However, as several recent worms have shown, portable computers provide worms with an entry point into such networks, since these ...

The threat of Internet worms has been, and continues to be, one of the most important issues faced by networking researchers and network users. The need for accurate and efficient modeling and analysis methods cannot be understated. Models that ...

Simulation of large-scale networks requires enormous amounts of memory and processing time. One way of speeding up these simulations is to distribute the model over a number of connected workstations. However, this introduces inefficiencies caused by ...

Parallel discrete event simulation (PDES) of models with fine-grained computation remains a challenging problem. We explore the usage of POSE, our Parallel Object-oriented Simulation Environment, for application performance prediction on large parallel ...

The RINSE simulator is being developed to support large-scale network security preparedness and training exercises, involving hundreds of players and a modeled network composed of hundreds of LANs. The simulator must be able to present a realistic ...

Scalable and efficient network simulation methods are the method of choice for evaluating and verifying wireless network protocols on a moderate to large scale. This need becomes obvious when simulating very large-scale wireless networks such as ...

Simulation of large-scale networks demands that we model some flows at coarser time-scales than others, simply to keep the execution cost manageable. This paper studies a method for periodically computing traffic at a time-scale larger than that ...

A fundamental requirement for any network simulation environment is the realistic forwarding of packets from a source to a destination in the simulated topology. The routing decisions at each hop along the path should accurately represent decisions made ...

This paper provides an overview of the WarpIV Simulation Kernel that was designed to be an initial implementation of the Standard Simulation Architecture (SSA). WarpIV is the next generation replacement for the Synchronous Parallel Environment for ...

In this paper we present the design and implementation of a software architecture, namely MAgic State Manager (MASM), to be employed within a Run-Time Infrastructure (RTI) in support of HLA federations. MASM allows performing checkpointing/recovery of ...

In this paper, a new event scheduling mechanism XEQ and a new rollback procedure rb-messages are proposed for use in optimistic logic simulation. We incorporate both of these techniques in a simulator XTW. XTW groups LPs into clusters, and makes use of ...

Previous scanning worms have beensignificant sources of network congestion and have had catastrophic effects on switches, routers and end-systems. In this paper, we focus on the simulation of the secondary resource-exhaustion effects that scanning worms ...

Most well-known worms, such as Code Red, Slammer, Blaster, and Sasser, infected vulnerable computers by scanning the entire IPv4 address space. In this paper, we present an advanced worm called "routing worm", which implements two advanced attacking ...

This study presents an analysis of the impact of mitigation on computer worm propagation in Mobile Ad-hoc Networks (MANETS). According to the recent DARPA BAA - Defense Against Cyber Attacks on MANETS [4], "One of the most severe cyber threats is ...

The widespread use of sequential simulation in large scale parameter studies means that large cost savings can be made by improving the performance of these simulators. Sequential discrete event simulation systems usually employ a central event list to ...

In earlier work cloning is proposed as a means forefficiently splitting a running simulation midway through its execution into multiple parallel simulations. In simulation cloning, clones usually are able to share computations that occur early in the ...

Parallel and distributed simulations enable the analysis of complex systems by concurrently exploiting the aggregate computation power and memory of clusters of execution units. In this paper we investigate a new direction for increasing both the ...

The use of software diversity has often been discussed in the research literature as an effectivemeans to break up the software monoculture present on the Internet and to thus prevent malcode propagation. However, there have been no quantitative studies ...