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Optical Engineering

Real-time electroholography using a multiple-graphics processing unit cluster system with a single spatial light modulator and the InfiniBand network
Author(s): Hiroaki Niwase; Naoki Takada; Hiromitsu Araki; Yuki Maeda; Masato Fujiwara; Hirotaka Nakayama; Takashi Kakue; Tomoyoshi Shimobaba; Tomoyoshi Ito
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Paper Abstract

Parallel calculations of large-pixel-count computer-generated holograms (CGHs) are suitable for multiple-graphics processing unit (multi-GPU) cluster systems. However, it is not easy for a multi-GPU cluster system to accomplish fast CGH calculations when CGH transfers between PCs are required. In these cases, the CGH transfer between the PCs becomes a bottleneck. Usually, this problem occurs only in multi-GPU cluster systems with a single spatial light modulator. To overcome this problem, we propose a simple method using the InfiniBand network. The computational speed of the proposed method using 13 GPUs (NVIDIA GeForce GTX TITAN X) was more than 3000 times faster than that of a CPU (Intel Core i7 4770) when the number of three-dimensional (3-D) object points exceeded 20,480. In practice, we achieved ∼40 tera floating point operations per second (TFLOPS) when the number of 3-D object points exceeded 40,960. Our proposed method was able to reconstruct a real-time movie of a 3-D object comprising 95,949 points.

Paper Details

Date Published: 28 September 2016
PDF: 6 pages
Opt. Eng. 55(9) 093108 doi: 10.1117/1.OE.55.9.093108
Published in: Optical Engineering Volume 55, Issue 9
Show Author Affiliations
Hiroaki Niwase, Kochi Univ. (Japan)
Naoki Takada, Kochi Univ. (Japan)
Hiromitsu Araki, Kochi Univ. (Japan)
Yuki Maeda, Kochi Univ. (Japan)
Masato Fujiwara, Kochi Univ. (Japan)
Hirotaka Nakayama, National Astronomical Observatory of Japan (Japan)
Takashi Kakue, Chiba Univ. (Japan)
Tomoyoshi Shimobaba, Chiba Univ. (Japan)
Tomoyoshi Ito, Chiba Univ. (Japan)

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