A GPU Spatial Processing System for CHIME
Name
2005.09481.pdf
Description
Accepted version
Size
2.6 MB
Format
Unknown
Checksum (MD5)
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Author(s)
Denman, Nolan
Renard, Andre
Vanderlinde, Keith
Berger, Philippe
Masui, Kiyoshi
Tretyakov, Ian
Date Issued
2020
Journal
Journal of Astronomical Instrumentation
Publisher
World Scientific Pub Co Pte Lt
Version
Author's final manuscript
Abstract
© 2020 World Scientific Publishing Company. We present an overview of the Graphics Processing Unit (GPU)-based spatial processing system created for the Canadian Hydrogen Intensity Mapping Experiment (CHIME). The design employs AMD S9300x2 GPUs and readily available commercial hardware in its processing nodes to provide a cost- and power-efficient processing substrate. These nodes are supported by a liquid-cooling system which allows continuous operation with modest power consumption and in all but the most adverse conditions. Capable of continuously correlating 2048 receiver-polarizations across 400MHz of bandwidth, the CHIME X-engine constitutes the most powerful radio correlator currently in existence. It receives 6.6Tb/s of channelized data from CHIME's FPGA-based F-engine, and the primary correlation task requires 8.39×1014 complex multiply-and-accumulate operations per second. The same system also provides formed-beam data products to commensal FRB and Pulsar experiments; it constitutes a general spatial-processing system of unprecedented scale and capability, with correspondingly great challenges in computation, data transport, heat dissipation, and interference shielding.
MIT Department
MIT Kavli Institute for Astrophysics and Space Research
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1142/S2251171720500142
