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GTC ON-DEMAND

Astronomy & Astrophysics
Presentation
Media
Implementation of a Real-Time Polyphase Filter in Radio Astronomy
Abstract:
We present our implementation of a polyphase filter for real-time data processing in radio astronomy. The polyphase filter is a standard tool in digital signal processing and as such a well established algorithm. We describe our implementation of the polyphase filter algorithm. We have implemented the polyphase filter on three generations of NVIDIA GPU cards (Fermi, Kepler, Maxwell), on the Intel Xeon CPU, and Xeon Phi (Knights Corner) platforms. All of our implementations aim to exploit the potential for data reuse that the algorithm offers. Our GPU implementations explore two different methods for achieving this. The first makes use of L1/Texture cache, the second uses shared memory. We present our results in terms of the sample rate that can be processed per second.
 
Topics:
Astronomy & Astrophysics, Signal and Audio Processing
Type:
Poster
Event:
GTC Silicon Valley
Year:
2016
Session ID:
P6281
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