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• W2758070217 abstract "Whereas traditional scientific applications are computationally intensive, recent applications require more data-intensive analysis and visualization to extract knowledge from the explosive growth of scientific information and simulation data. As the computational power and size of compute clusters continue to increase, the I/O read rates and associated network for these data-intensive applications have been unable to keep pace. These applications suffer from long I/O latency due to the movement of “big data” from the network/parallel file system, which results in a serious performance bottleneck. To address this problem, we proposed a novel approach called “ODDS” to optimize data-locality access in scientific data analysis and visualization. ODDS leverages a distributed file system (DFS) to provide scalable data access for scientific analysis. Through exploiting the information of underlying data distribution in DFS, ODDS employs a novel data-locality scheduler to transform a compute-centric mapping into a data-centric one and enables each computational process to access the needed data from a local or nearby storage node. ODDS is suitable for parallel applications with dynamic process-to-data scheduling and for applications with static process-to-data assignment. To demonstrate the efficacy of our methods, we present and evaluate ODDS in the context of two state-of-the-art, scientific-analysis applications-mpiBLAST and ParaView-along with the Hadoop distributed file system (HDFS) across a wide variety of computing platform settings. In comparison to existing deployments using NFS, PVFS, or Lustre as the underlying storage systems, ODDS can greatly reduce the I/O cost and double overall performance." @default.
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• W2758070217 date "2020-01-01" @default.
• W2758070217 modified "2023-10-15" @default.
• W2758070217 title "ODDS: Optimizing Data-Locality Access for Scientific Data Analysis" @default.
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• W2758070217 doi "https://doi.org/10.1109/tcc.2017.2754484" @default.
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