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We present here the results of our investigation of a transactional model of parallel programming on cluster computing systems. This model is specifically targeted for graph applications with the goal of harnessing unstructured parallelism inherently present in many such problems. In this model, tasks for vertex-centric computations are executed optimistically in parallel as serializable transactions...
With the rapid growth of the Internet and database technologies in recent years, question answering systems (QAS) have emerged as important applications. Although many QAS have been implemented, little work has been done on the development of a user-centered evaluation for QAS. User-centered evaluation is used to understand a user's needs and identify important dimensions and factors in the development...
This paper describes an approach for designing a power management plan that matches the supply of power with the demand for power in data centers. Power may come from the grid, from local renewable sources, and possibly from energy storage subsystems. The supply of renewable power is often time-varying in a manner that depends on the source that provides the power, the location of power generators,...
The impact of satellite-derived precipitation on variability of sea-surface salinity (SSS) in the tropical Indian Ocean has been studied using an ocean general-circulation model. Two different experiments have been conducted. In one of the experiments, the model has been forced by precipitation derived from National Center for Environmental Prediction (NCEP) reanalysis, while in the other one, the...
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