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Grid ENabled Integrated Earth system model |
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Vision
A simplified example of how the GENIE system we envisage will be used is as follows: The system will be accessed via a portal, which will allow a user to compose, execute and analyse the results from an Earth system simulation. After authenticating themselves with the portal, a user will have access to a library of components that can each model different aspects of the Earth system (for example, ocean, atmosphere) at different resolutions. The user constructs a composite application by selecting from these components; a selection informed by meta-data provided by a component' s author and made available in the library. Together with these components the user selects appropriate mesh conversion tools, to enable data exchange at model boundaries, and defines an event-queue, which specifies the timing of the data exchanges and indicates what simulated data is to be archived for later inspection. The user also provides the data necessary to initialise the model. From this, an intelligent meta-scheduler determines the resource requirements and maps the processing required to a distributed Grid of compute resources using middleware such as Globus and Condor. At runtime each component produces distributed data, which can be monitored during execution and is also archived automatically as specified by the user. From the portal it is possible to browse this archive of results using post-processing visualization tools and re-use results from the archive to seed new calculations.