NDLI: Large-scale high-dimensional nearest neighbor search using flash memory with in-store processing

Content Provider	IEEE Xplore Digital Library
Author	Sang-Woo Jun Chanwoo Chung Arvind
Copyright Year	2015
Abstract	Modern datasets of importance such as images, videos, protein sequences or text, usually contain very high dimensional information from the search point of view. Nearest neighbor search is one of the most fundamental building blocks in dealing with large amounts of data. It is the problem of finding points in a database that are most similar to a query data point by some distance metric. There is a large body of work in algorithms for nearest-neighbor search on large highdimensional datasets. Since these algorithms invariably involve random access to data, most existing implementations ensure that the data is stored in DRAM, and does not spill into secondary storage such as hard disks. However, the immense size of modern datasets often requires hundreds of computers to accommodate the dataset in DRAM. An alternative to such a system is a much smaller cluster that stores the dataset in flash memory (instead of DRAM) and has in-store computing capability. In this paper, we build and demonstrate the performance of highdimensional nearest-neighbor search on a flash-based system with FPGA acceleration and show that it sometimes exceeds the performance of a DRAM-based solution. We chose two example applications, images and documents, for this demonstration. Since flash storage, in comparison to DRAM, is an order of magnitude cheaper and consumes an order of magnitude less power, a flashbased solution for nearest-neighbor searches offers a viable and attractive alternative.
Starting Page	1
Ending Page	8
File Size	650778
Page Count	8
File Format	PDF
e-ISBN	9781467394062
DOI	10.1109/ReConFig.2015.7393324
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-12-07
Publisher Place	Mexico
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Performance evaluation Histograms Random access memory Ash Field programmable gate arrays Nearest neighbor searches
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in