GTC 2012 - GPU Technology Conference

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LOFAR Radio Telescope largest low-frequency telescope distributed sensor network ~85,000 sensors GTC'12 May 14-17, 2012 4
LOFAR: A Software Telescope different observation modes require flexibility standard imaging pulsar survey known pulsar epoch of reionization transients ultra-high energy particles … need supercomputer real time GTC'12 May 14-17, 2012 5
Page 1 and 2: Signal Processing on GPUs for Radio
Page 3: Intro: Radio Telescopes GTC'12 May
Page 7 and 8: Square Kilometre Array future radi
Page 9 and 10: Rationale 2005: LOFAR needed super
Page 11 and 12: CUDA or OpenCL OpenCL advantages
Page 13 and 14: Poly-Phase Filter (PPF) bank FIR f
Page 15 and 16: Performance Measurements maximum f
Page 17 and 18: 2) FFT 1D complex ➜ complex 16
Page 19 and 20: Clock Correction corrects cable le
Page 21 and 22: 4) BandPass Correction powers in c
Page 23 and 24: Combined Kernel combine: delay co
Page 25 and 26: 5) Correlator see previous talk (S
Page 27 and 28: Correlator #Threads #threads 1024 7
Page 29 and 30: Combined Pipeline full pipeline 2
Page 31 and 32: Performance Breakdown GTX 580 domi
Page 33 and 34: Performance Breakdown HD 7970 mult
Page 35 and 36: Are GPUs Efficient GTX 680 Blue Gen
Page 37 and 38: Future Optimizations combine more
Page 39 and 40: Part 2: Creation of Sky Images GTC'
Page 41 and 42: Creating a Sky Image convolve corr
Page 43 and 44: Two Problems corr conv (~100x100) 1
Page 45 and 46: This Is A Hard Problem 400 50 350 4
Page 47 and 48: This Is A Hard Problem 400 50 350 4
Page 49 and 50: Where Is The Data corr conv (~100x1
Page 51 and 52: Use Locality corr conv reduce #mem
Page 53 and 54: An Unintuitive Approach corr conv
Page 55 and 56:
An Unintuitive Approach corr conv
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
Performance Measurements GTC'12 May
Page 63 and 64:
GTX 680 Performance (CUDA) GTX 680
Page 65 and 66:
HD 7970 Performance (OpenCL) mediu
Page 67 and 68:
Multi-GPU Scaling eight Nvidia GTX
Page 69 and 70:
Compared To Other GPU Gridders 1) M
Page 71 and 72:
Future Work LOFAR gridder combine
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GTC 2012 - GPU Technology Conference

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