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Decentralized Parallel Algorithm for Training Generative Adversarial Nets

10/28/2019
by   Mingrui Liu, et al.
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Generative Adversarial Networks (GANs) are powerful class of generative models in the deep learning community. Current practice on large-scale GAN training <cit.> utilizes large models and distributed large-batch training strategies, and is implemented on deep learning frameworks (e.g., TensorFlow, PyTorch, etc.) designed in a centralized manner. In the centralized network topology, every worker needs to communicate with the central node. However, when the network bandwidth is low or network latency is high, the performance would be significantly degraded. Despite recent progress on decentralized algorithms for training deep neural networks, it remains unclear whether it is possible to train GANs in a decentralized manner. In this paper, we design a decentralized algorithm for solving a class of non-convex non-concave min-max problem with provable guarantee. Experimental results on GANs demonstrate the effectiveness of the proposed algorithm.

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