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Simple weather forecast workflow [2] 

Simple weather forecast workflow [2] 

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Conference Paper
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Simulation workflow scheduling becomes an important area as it allows users to process large scale & heterogeneous problems in a more flexible way. In most complex simulation workflows the user has to select the optimal use of local and external resources that will satisfy its requirements under the specific time & cost constraints thus involving m...

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... A simple example workflow of weather forecasting is presented in figure 1 below, displaying the sequence of concatenated steps along with their relevant descriptions. The figure is followed by a simple walk-through [2]. ...

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The increased interest on processing large scale & heterogeneous problems in distributed environments created the need of software tools that would support such complex workflows. Especially, simulation workflow scheduling has become an important area as it allows users to process large scale problems in a more flexible way. In most complex simulat...

Citations

... A weather forecast example provided by a previous study indicated the basic workflow when the simulation is decomposed into a process-oriented pipeline (Tsahalis et al. 2013). Weather research shares conceptual similarities to UHI, and thus, their example is applied here as a base version of the conventional workflow. ...
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... Genetic algorithms (GAs) provide robust search techniques that allow a high-quality solution to be derived from a large search space in polynomial time, by applying the principle of evolution. A successful application of GAs for workflow optimization in the aerospace manufacturing domain is also presented in [9]. ...
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Simulation workflow optimization has become an important investigation area, as it allows users to process large scale & heterogeneous problems in distributed environments in a more flexible way. The most characteristic categories of such problems come from the aerospace and the automotive industries. In this work a specially developed algorithm that is based on heuristic optimization techniques (Genetic Algorithms) is applied to deliver an optimized workflow implementation of an initial workflow schedule (PERT). In order to demonstrate its potentials, the algorithm is applied on a sample manufacturing product design problem that requires a lot of time consuming simulations & finite elements analysis under a constrained availability of computer resources.
... Example optimization loop involving heterogeneous simulation tasks in its workflow[4].Workflow description: The perceived comfort is evaluated by a Human Response Model (HRM), provided as a web-service by external partner C. The HRM requires inputs of temperature, air flow, humidity and pressure (ENV) from the Cabin CFD model and noise and vibration (N&V) inputs from the Cabin FEM model. The ENV results of the Cabin CFD model are calculated based on its own operational characteristics in combination with those of the ECS electrical/thermal model from external partner A. The N&V results of the Cabin FEM model are calculated based on its own operational characteristics in combination with those of the power plant FEM model from external partner B. Different settings and configurations for each of the four models (FEM, CFD, electric/thermal) are considered based on the optimization loop algorithm and the available constraints, the results of which are then evaluated by the HRM, leading to selection of new values for calculation and evaluation. ...
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... Under iProd framework a special tool for Simulation Workflow Optimization (SWO) was developed in order to support the optimization of virtual (simulation) workflows in cases of distributed and heterogeneous networks of collaborating systems. The aim is to present a flexible web based tool [3] that will be able to promote a simulation workflow optimization method, make it available to a remote application or another service, and support a wider automated collaboration between heterogeneous design & simulation tools (figure 2). Figure 2. The role of SWO in the PDP process A more detailed description of the SWO module can be found in [4]. In this work we will present the results of ...
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