NDLI: Brief announcement: faster 3-periodic merging networks

Content Provider	ACM Digital Library
Author	Piotrów, Marek
Abstract	We consider the problem of merging two sorted sequences on a comparator network that is used repeatedly, that is, if the output is not sorted, the network is applied again using the output as input. The challenging task is to construct such networks of small depth (called a period in this context). The first constructions of merging networks with a constant period were described by Kuty{l}owski et al. They gave 3-periodic network that merges two sorted sequences of N numbers in time 12log N and a similar network of period 4 that works in 5.67log N. We present a new family of 3-periodic merging networks with merging time upper-bounded by 6log N. The construction can be easily generalized to larger constant periods with decreasing running time, for example, to 4-periodic ones that work in time upper-bounded by 4log N.
Starting Page	223
Ending Page	225
Page Count	3
File Format	PDF
ISBN	9781450328210
DOI	10.1145/2612669.2612700
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2014-06-23
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Parallel merging Oblivious merging Merging network Comparator
Content Type	Text
Resource Type	Article

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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
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Brief announcement: faster 3-periodic merging networks