NDLI: An energy-efficient custom architecture for the SKA1-low central signal processor

Content Provider	ACM Digital Library
Author	Van Lunteren, Jan Hagleitner, Christoph Jongerius, Rik Fiorin, Leandro Vermij, Erik
Abstract	The Square Kilometre Array (SKA) will be the biggest radio telescope ever built, with unprecedented sensitivity, angular resolution, and survey speed. This paper explores the design of a custom architecture for the central signal processor (CSP) of the SKA1-Low, the SKA's aperture-array instrument consisting of 131,072 antennas. The SKA1-Low's antennas receive signals between 50 and 350 MHz. After digitization and preliminary processing, samples are moved to the CSP for further processing. In this work, we describe the challenges in building the CSP, and present a first quantitative study for the implementation of a custom hardware architecture for processing the main CSP algorithms. By taking advantage of emerging 3D-stacked-memory devices and by exploring the design space for a 14-nm implementation, we estimate a power consumption of 14.4 W for processing all channels of a sub-band and an energy efficiency at application level of up to 208 GFLOPS/W for our architecture.
Starting Page	1
Ending Page	8
Page Count	8
File Format	PDF
ISBN	9781450333580
DOI	10.1145/2742854.2742855
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2015-05-06
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Accelerators Custom computing architectures Ska Hpc
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

An energy-efficient custom architecture for the SKA1-low central signal processor