Real-time electroholography using a multiple-graphics processing unit cluster system with a single spatial light modulator and the InfiniBand network

Hiroaki Niwase; Naoki Takada; Hiromitsu Araki; Yuki Maeda; Masato Fujiwara; Hirotaka Nakayama; Takashi Kakue; Tomoyoshi Shimobaba; Tomoyoshi Ito

doi:10.1117/1.OE.55.9.093108

28 September 2016 Real-time electroholography using a multiple-graphics processing unit cluster system with a single spatial light modulator and the InfiniBand network

Hiroaki Niwase, Naoki Takada, Hiromitsu Araki, Yuki Maeda, Masato Fujiwara, Hirotaka Nakayama, Takashi Kakue, Tomoyoshi Shimobaba, Tomoyoshi Ito

Author Affiliations +

Optical Engineering, Vol. 55, Issue 9, 093108 (September 2016). https://doi.org/10.1117/1.OE.55.9.093108

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.

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Hiroaki Niwase, Naoki Takada, Hiromitsu Araki, Yuki Maeda, Masato Fujiwara, Hirotaka Nakayama, Takashi Kakue, Tomoyoshi Shimobaba, and Tomoyoshi Ito "Real-time electroholography using a multiple-graphics processing unit cluster system with a single spatial light modulator and the InfiniBand network," Optical Engineering 55(9), 093108 (28 September 2016). https://doi.org/10.1117/1.OE.55.9.093108

Published: 28 September 2016

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