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A Distributed Multi-Level Simulation Tool For Tunnel Risk Assessment And Cost Optimization

G. Pipelidis, C. Forster, B. Kohl
Published 2015 ·

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In this paper, it is presented a workflow management system and a web-based cluster front-end developed for scheduling simulations. It is described how the workflow, generated via a web interface, and is integrated from the web server into the cluster. User interaction was achieved on multiple stages. The user can interact with the system by specifying the input parameters the simulations should vary on. One can add, start and stop the simulation on the cluster, upload or create scripts and parse the resulting data to the server location. The user is also able to execute existing executable scripts locate on the cluster. The process of every sub-simulation can be followed heterogeneously with a maximum of one minute delay. How the core allocation decision is being taken by the scheduler itself, which follows an agent-based protocol inspired by the FIPA-Contract-Net protocol of communication. Thus, the scheduler itself always inspect the level of coverage of the preconditions each of the jobs has to meet. It is also presented the strategy that was followed for integrating different simulating models that were developed for mesh generation, traffic simulation, airflow simulation, smoke propagation simulation, ventilation strategy simulation and evacuation simulation to estimate the consequences of a fire in a tunnel and finally approximate its risk.
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