simulation-based planning by emergency management agencies for region-scale evacuation scenarios requires fast execution of large vehicular traffic models. The planning problem is characterized by the need to capture ...
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Multi-resolution models can be statically (i.e., before simulation) or dynamically (i.e., during simulation) abstracted to accelerate the simulations without compromising the analysis goals. However, abstractions must...
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Multiprocessor system-on-chip (MP-SoC) platforms represent an emerging trend for embedded multimedia applications. To enable MP-SoC platforms, scalable communication-centric interconnect fabrics, such as networks-on-c...
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ISBN:
(纸本)1424401550
Multiprocessor system-on-chip (MP-SoC) platforms represent an emerging trend for embedded multimedia applications. To enable MP-SoC platforms, scalable communication-centric interconnect fabrics, such as networks-on-chip (NoC), have been recently proposed. The shared memory represents one of the key elements in designing MP-SoCs, since its function is to provide data exchange and synchronization support. In this paper, a distributed shared memory architecture has been explored, that is suitable for low-power on-chip multiprocessors based on NoC. In particular, the paper focuses on the energy/delay exploration of on-chip physically distributed and logically shared memory address space for MP-SoCs based on a parameterizable NoC. The data allocation on the physically distributed shared memory space is dynamically managed by an on-chip Hardware Memory Management Unit. Experimental results show the impact of different NoC topologies and distributed shared memory configurations for a selected set of parallel benchmark applications from the power/performance perspective.
The proceedings contain 20 papers. The topics discussed include: rendering on demand;an application of scalable massive model interaction using shared-memory systems;accelerating the irradiance cache through parallel ...
ISBN:
(纸本)3905673401
The proceedings contain 20 papers. The topics discussed include: rendering on demand;an application of scalable massive model interaction using shared-memory systems;accelerating the irradiance cache through parallel component-based rendering;parallelsimulation of cloth on distributed memory architectures;dynamic load balancing for parallel volume rendering;interactive volume rendering of unstructured grids with time-varying scalar fields;optimized volume raycasting for graphics-hardware-based cluster systems;accelerated volume rendering with homogeneous region encoding using extended anisotropic chessboard distance on GPU;parallel texture-based vector field visualization on curved surfaces using GPU cluster computers;and distributed force-directed graph layout and visualization.
When using statechart diagrams, the history mechanism can be useful for modelling the suspension of a "normal" business process upon certain "abnormal" events together with the subsequent resumptio...
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ISBN:
(纸本)9789728865498
When using statechart diagrams, the history mechanism can be useful for modelling the suspension of a "normal" business process upon certain "abnormal" events together with the subsequent resumption, as illustrated by the examples in this paper. However, previous approaches to model checking statechart diagrams often ignore the history mechanism. We enhanced such a previous approach based on Communicating Sequential Processes (CSP) and developed a support tool for it.
A symbiotic or online simulation is defined as one that interacts with the physical system in a mutually beneficial way. The simulation is driven by real time data collected from a physical system under control and ne...
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The proceedings contain 48 papers. The topics discussed include: reconfigurable platform for digital convergence terminals;European research in embedded systems;interface overheads in embedded multimedia software;auto...
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ISBN:
(纸本)3540364102
The proceedings contain 48 papers. The topics discussed include: reconfigurable platform for digital convergence terminals;European research in embedded systems;interface overheads in embedded multimedia software;automated distribution of UML 2.0 designed applications to a configurable multiprocessor platform;key research challenges for successfully applying MDD within real-time embedded software development;domain-specific modeling of power aware distributed real-time embedded systems;mining dynamic document spaces with massively parallel embedded processors;designing wireless sensor nodes;design, implementation, and experiment on outdoor deployment of wireless sensor network for environmental monitoring;energy-driven partitioning of signal processing algorithms in sensor networks;security in wireless sensor networks: considerations and experiments;on security of PAN wireless systems;and code size reduction by compiler tuning.
The proliferation of mobile devices and the fact that high-bandwidth and continuous connectivity is not available everywhere, has led to the creation of hoarding algorithms that attempt to mitigate the problems relate...
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ISBN:
(纸本)159593488X
The proliferation of mobile devices and the fact that high-bandwidth and continuous connectivity is not available everywhere, has led to the creation of hoarding algorithms that attempt to mitigate the problems related with disconnected operation and with the operation in areas where bandwidth is either scarce or expensive. In this paper, we present a hoarding scheme for location-based data in semi-structured information spaces, such as the World Wide Web, which relies on clustering of semantically related data items. We show by means of experimental evaluation that our clustering-based approach outperforms existing hoarding techniques that do not make use of clustering by a factor of more than 2 in terms of hoard cache hit ratio. Copyright 2006 ACM.
Monte Carlo is a powerful and versatile derivative pricing tool, with the main drawback of requiring a large amount of computing time to generate enough realisations of the stochastic process. However, since realisati...
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parallel and distributedsimulations 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 dire...
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ISBN:
(纸本)0769523838
parallel and distributedsimulations 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 speedup of a simulation process and the utilization Of computation and communication resources. Many simulation-based investigations require to collect independent observations for a correct and significant statistical analysis of results. The execution of many independent parallel or distributedsimulation runs may suffer the speedup reduction due to rollbacks under the optimistic approach, and due to idle CPU times originated by synchronization and communication bottlenecks under the conservative approach. We present a parallel and distributedsimulation framework supporting Concurrent Replication of parallel and distributedsimulations (CR-PADS), as an alternative to the execution of a linear sequence of multiple parallel or distributedsimulation runs. Results obtained from tests executed under variable scenarios show that speedup and resource utilization gains could be obtained by adopting the proposed replication approach in addition to the pure parallel and distributedsimulation.
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