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A GPU Spatial Processing System for CHIME
Name
2005.09481.pdf
Description
Accepted version
Size
2.6 MB
Format
Adobe PDF
Checksum (MD5)
b8558df232b38f827855c0b6fe1c6bee
Author(s)
Denman, N
Renard, A
Vanderlinde, K
Berger, P
Masui, K
Tretyakov, I
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.
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
Persistent DSpace Link
DOI of Published Version
10.1142/S2251171720500142
