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GLite: a fast and efficient automatic graph-level optimizer for large-scale DNNs

We propose a scalable graph-level optimizer named GLite to speed up search-based optimizations on large neural networks. GLite leverages a potential-based partitioning strategy to partition large computation graphs into small subgraphs without losing profitable substitution patterns. To avoid redundant subgraph matching, we propose a dynamic programming algorithm to reuse explored matching patterns. The experimental results show that GLite reduces the running time of search-based optimizations from hours to milliseconds, without compromising in inference performance.