NDLI: FlexIO: I/O Middleware for Location-Flexible Scientific Data Analytics

Content Provider	IEEE Xplore Digital Library
Author	Fang Zheng Hongbo Zou Eisenhauer, G. Schwan, K. Wolf, M. Dayal, J. Tuan-Anh Nguyen Jianting Cao Abbasi, H. Klasky, S. Podhorszki, N. Hongfeng Yu
Copyright Year	2013
Description	Author affiliation: Georgia Inst. of Technol., Atlanta, GA, USA (Fang Zheng; Hongbo Zou; Eisenhauer, G.; Schwan, K.; Wolf, M.; Dayal, J.; Tuan-Anh Nguyen; Jianting Cao) \|\| Oak Ridge Nat. Lab., Oak Ridge, TN, USA (Abbasi, H.; Klasky, S.; Podhorszki, N.) \|\| Dept. of Comput. Sci. & Eng., Univ. of Nebraska-Lincoln, Lincoln, NE, USA (Hongfeng Yu)
Abstract	Increasingly severe I/O bottlenecks on High-End Computing machines are prompting scientists to process simulation output data online while simulations are running and before storing data on disk. There are several options to place data analytics along the I/O path: on compute nodes, on separate nodes dedicated to analytics, or after data is stored on persistent storage. Since different placements have different impact on performance and cost, there is a consequent need for flexibility in the location of data analytics. The FlexIO middleware described in this paper makes it easy for scientists to obtain such flexibility, by offering simple abstractions and diverse data movement methods to couple simulation with analytics. Various placement policies can be built on top of FlexIO to exploit the trade-offs in performing analytics at different levels of the I/O hierarchy. Experimental results demonstrate that FlexIO can support a variety of simulation and analytics workloads at large scale through flexible placement options, efficient data movement, and dynamic deployment of data manipulation functionalities.
Sponsorship	IEEE Comput. Soc.
Starting Page	320
Ending Page	331
File Size	293836
Page Count	12
File Format	PDF
ISBN	9781467360661
ISSN	15302075
DOI	10.1109/IPDPS.2013.46
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-05-20
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Analytical models Data models Computational modeling Runtime Arrays Monitoring Software Flexibility I/O In Situ Data Analytics Placemen
Content Type	Text
Resource Type	Article

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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