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The calculation of probabilistic outputs in operational flood forecasting often requires that models are run multiple times with varied boundary condition or model structure. In order to reduce the computation time, ensembles can be run in parallel.
In order to perform these operations grid computing techiques can be utilized. Condor is a specialized workload management system for computationally intensive jobs. Condor provides the necessary tools such as job queuing, scheduling, priority management, resource monitoring, and resource management to enable multiple model runs to be made on multiple nodes connected to Delft-Fews forecasting shell machines (as head node). Serial or parallel jobs can be submitted to Condor which are then placed into a queue, and run based on how condor is configured.
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