A SCALABLE HYBRID FPGA/GPU FX CORRELATOR-Reference-Cited by-同舟云学术

A SCALABLE HYBRID FPGA/GPU FX CORRELATOR

Published:2014-03 Issue:01 Volume:03 Page:1450002
ISSN:2251-1717
Container-title:Journal of Astronomical Instrumentation
language:en
Short-container-title:J. Astron. Instrum.

Author:

KOCZ J.¹,GREENHILL L. J.¹,BARSDELL B. R.¹,BERNARDI G.¹²³,JAMESON A.⁴,CLARK M. A.¹⁵,CRAIG J.⁶,PRICE D.¹,TAYLOR G. B.⁶,SCHINZEL F.⁶,WERTHIMER D.⁷

Affiliation:

1. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts, 02138, USA

2. SKA SA, 3rd Floor, The Park, Park Road, Pinelands, 7405, South Africa

3. Department of Physics and Electronics, Rhodes University, P. O. Box 94, Grahamstown, 6140, South Africa

4. Centre for Astrophysics and Supercomputing, Swinburne University of Technology, 1 Alfred Street, Hawthorn, Victoria, 3122, Australia

5. NVIDIA Corporation, 2701 San Tomas Expressway, Santa Clara, CA 95050, USA

6. Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87131, USA

7. Space Sciences Lab, University of California, Berkeley, CA 94720, USA

Abstract

Radio astronomical imaging arrays comprising large numbers of antennas, O(102–103), have posed a signal processing challenge because of the required O (N2) cross correlation of signals from each antenna and requisite signal routing. This motivated the implementation of a Packetized Correlator architecture that applies Field Programmable Gate Arrays (FPGAs) to the O (N) "F-stage" transforming time domain to frequency domain data, and Graphics Processing Units (GPUs) to the O (N2) "X-stage" performing an outer product among spectra for each antenna. The design is readily scalable to at least O(103) antennas. Fringes, visibility amplitudes and sky image results obtained during field testing are presented.

Publisher

World Scientific Pub Co Pte Lt

Subject

Astronomy and Astrophysics,Instrumentation

Link

https://www.worldscientific.com/doi/pdf/10.1142/S2251171714500020

Reference15 articles.

1. Subtraction of point sources from interferometric radio images through an algebraic forward modelling scheme

2. A 189 MHz, 2400 deg2POLARIZATION SURVEY WITH THE MURCHISON WIDEFIELD ARRAY 32-ELEMENT PROTOTYPE

3. The VLA Low-Frequency Sky Survey

4. DiFX: A Software Correlator for Very Long Baseline Interferometry Using Multiprocessor Computing Environments

Cited by 17 articles. 订阅此论文施引文献订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献

1. The Qitai radio telescope;Science China Physics, Mechanics & Astronomy;2023-07-11

2. Optimization and commissioning of the EPIC commensal radio transient imager for the long wavelength array;Monthly Notices of the Royal Astronomical Society;2023-01-25

3. Prospects of GPU Tensor Core Correlation for the SMA and the ngEHT;Galaxies;2023-01-11

4. Low Radio Frequency Observations from the Moon Enabled by NASA Landed Payload Missions;The Planetary Science Journal;2021-03-08

5. Architecturally truly diverse systems: A review;Future Generation Computer Systems;2020-09