ExpoCloud: a Framework for Time and Budget-Effective Parameter Space Explorations Using a Cloud Compute Engine
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Large parameter space explorations are among the most time consuming yet critically important tasks in many fields of modern research. ExpoCloud enables the researcher to harness cloud compute resources to achieve time and budget-effective large-scale concurrent parameter space explorations. ExpoCloud enables maximal possible levels of concurrency by creating compute instances on-the-fly, saves money by terminating unneeded instances, provides a mechanism for saving both time and money by avoiding the exploration of parameter settings that are as hard or harder than the parameter settings whose exploration timed out. Effective fault tolerance mechanisms make ExpoCloud suitable for large experiments. ExpoCloud provides an interface that allows its use under various cloud environments. As a proof of concept, we implemented a class supporting the Google Compute Engine (GCE). We also implemented a class that simulates a cloud environment on the local machine, thereby facilitating further development of ExpoCloud. The article describes ExpoCloud's features and provides a usage example. The software is well documented and is available under the MIT license.
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