LSOracle: a Logic Synthesis Framework Driven by Artificial Intelligence: Invited Paper
LSOracle: a Logic Synthesis Framework Driven by Artificial Intelligence: Invited Paper
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DOI：
10.1109/iccad45719.2019.8942145
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发表时间：
2019-11
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通讯作者：
Walter Lau Neto;Max Austin;Scott Temple;L. Amarù;Xifan Tang;P. Gaillardon
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作者：
Walter Lau Neto;Max Austin;Scott Temple;L. Amarù;Xifan Tang;P. Gaillardon
现代集成电路（IC）的复杂性日益增加，导致系统由各种不同的知识产权（IP）块组成，称为片上系统（SoC）。这种复杂性需要工程师的强大专业知识，依赖于广泛的商业EDA工具。为了克服这种限制，需要一个自动化的开源逻辑综合流程。在这种情况下，这项工作提出了LSAracle：一种新的自动化混合逻辑综合框架。LSAracle是第一个利用最先进的与反相图（AIG）和多数反相图（MATRITY-INVERTER GRAPH）逻辑优化器的公司，并依赖于深度神经网络（DNN）来自动决定哪个优化器应该处理电路的不同部分。为此，LSOracle应用$k-way$分区将DAG拆分为多个分区，并使用选择最适合的优化器。针对一组混合逻辑电路的7 nm ASAP标准单元库的后技术映射ASIC结果显示，与AIG和ASIC相比，面积延迟积的平均改善分别为6.87%（高达10.26%）和2.70%（高达6.27%）。此外，我们表明，对于所考虑的电路，LSOracle实现了一个区域接近AIG（提供更小的电路）与MIG，提供更快的电路的类似性能。
The increasing complexity of modern Integrated Circuits (ICs) leads to systems composed of various different Intellectual Property (IPs) blocks, known as System-on-Chip (SoC). Such complexity requires strong expertise from engineers, that rely on expansive commercial EDA tools. To overcome such a limitation, an automated open-source logic synthesis flow is required. In this context, this work proposes LSOracle: a novel automated mixed logic synthesis framework. LSOracle is the first to exploit state-of-the-art And-Inverter Graph (AIG) and Majority-Inverter Graph (MIG) logic optimizers and relies on a Deep Neural Network (DNN) to automatically decide which optimizer should handle different portions of the circuit. To do so, LSOracle applies $k-way$ partitioning to split a DAG into multiple partitions and uses a to chose the best-fit optimizer. Post-tech mapping ASIC results, targeting the 7nm ASAP standard cell library, for a set of mixed-logic circuits, show an average improvement in area-delay product of 6.87% (up to 10.26%) and 2.70% (up to 6.27%) when compared to AIG and MIG, respectively. In addition, we show that for the considered circuits, LSOracle achieves an area close to AIGs (which delivered smaller circuits) with a similar performance of MIGs, which delivered faster circuits.