DiffPattern-Flex: Efficient Layout Pattern Generation via Discrete Diffusion

• URL: http://arxiv.org/abs/2505.04173v1
• Date: Wed, 07 May 2025 07:04:11 GMT
• Title: DiffPattern-Flex: Efficient Layout Pattern Generation via Discrete Diffusion
• Authors: Zixiao Wang, Wenqian Zhao, Yunheng Shen, Yang Bai, Guojin Chen, Farzan Farnia, Bei Yu,
• Abstract summary: We present toolDiffPattern-Flex, a novel approach to generate reliable layout patterns efficiently.<n>toolDiffPattern-Flex incorporates a new method for generating diverse topologies using a discrete diffusion model.<n>Fast sampling and efficient legalization technologies are employed to accelerate the generation process.
• Score: 19.004533761566197
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Recent advancements in layout pattern generation have been dominated by deep generative models. However, relying solely on neural networks for legality guarantees raises concerns in many practical applications. In this paper, we present \tool{DiffPattern}-Flex, a novel approach designed to generate reliable layout patterns efficiently. \tool{DiffPattern}-Flex incorporates a new method for generating diverse topologies using a discrete diffusion model while maintaining a lossless and compute-efficient layout representation. To ensure legal pattern generation, we employ {an} optimization-based, white-box pattern assessment process based on specific design rules. Furthermore, fast sampling and efficient legalization technologies are employed to accelerate the generation process. Experimental results across various benchmarks demonstrate that \tool{DiffPattern}-Flex significantly outperforms existing methods and excels at producing reliable layout patterns.

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