使用SpectreX-GPU加速大規(guī)模高精度模擬電路的仿真驗證
電子技術(shù)應(yīng)用
張朝霖1，黃詩琦2，劉歡艷2
1.紫光展銳（上海）科技股份有限公司；2.上海楷登電子科技有限公司
摘要： 隨著半導(dǎo)體先進(jìn)工藝的發(fā)展，集成電路規(guī)模、復(fù)雜度不斷增加，給電路仿真驗證帶來了極大的挑戰(zhàn)。利用SpectreX-GPU加速電路仿真，極大地提升了先進(jìn)工藝大規(guī)模高精度復(fù)雜電路的仿真驗證效率，突破了該類設(shè)計的仿真驗證瓶頸。SpectreX-GPU是Cadence Spectre平臺一款新的全精度SPICE仿真引擎，將傳統(tǒng)的基于CPU的電路仿真工具拓展至更大算力的CPU-GPU異構(gòu)計算中，結(jié)合了GPU強大的并行計算能力與CPU的復(fù)雜運算能力，實現(xiàn)兩種計算能力之間的高效調(diào)度和平衡，同時保持SpectreX仿真器的準(zhǔn)確性。針對本公司不同類型的實際電路，利用SpectreX-GPU 仿真引擎和GPU進(jìn)行仿真，與基于CPU的SpectreX相比，在不影響仿真精度的前提下，顯著縮短了仿真時間，提高了驗證效率和覆蓋范圍，幫助工程師在保證設(shè)計質(zhì)量的前提下進(jìn)一步縮短設(shè)計周期。
中圖分類號：TN402 文獻(xiàn)標(biāo)志碼：A DOI: 10.16157/j.issn.0258-7998.250801
中文引用格式： 張朝霖，黃詩琦，劉歡艷. 使用SpectreX-GPU加速大規(guī)模高精度模擬電路的仿真驗證[J]. 電子技術(shù)應(yīng)用，2025，51(8)：7-10.
英文引用格式： Zhang Chaolin，Huang Shiqi，Liu Huanyan. Accelerating simulation verification for high-precision large-scale analog design circuit using SpectreX-GPU simulator engine[J]. Application of Electronic Technique，2025，51(8)：7-10.
中文引用格式： 張朝霖，黃詩琦，劉歡艷. 使用SpectreX-GPU加速大規(guī)模高精度模擬電路的仿真驗證[J]. 電子技術(shù)應(yīng)用，2025，51(8)：7-10.
英文引用格式： Zhang Chaolin，Huang Shiqi，Liu Huanyan. Accelerating simulation verification for high-precision large-scale analog design circuit using SpectreX-GPU simulator engine[J]. Application of Electronic Technique，2025，51(8)：7-10.
Accelerating simulation verification for high-precision large-scale analog design circuit using SpectreX-GPU simulator engine
Zhang Chaolin1，Huang Shiqi2，Liu Huanyan2
1.Unisoc ；2.Cadence Design Systems， Inc.
Abstract： With the development of semiconductor advanced processes nodes, the scale and complexity of integrated circuit designs is increasing, which brings great challenges to circuit simulation and verification. Accelerating circuit simulation with SpectreX-GPU has greatly improved the verification efficiency of large-scale, high-precision and complex circuit with advanced process nodes and has broken through the bottleneck of simulation and verification. SpectreX-GPU is a new engine in Cadence Spectre family with true spice accuracy. SpectreX-GPU expands simulator’s computation capability on CPU-GPU heterogeneous computing, combining the huge parallel computation capabilities of GPU with the complex operations of CPU. That makes SpectreX-GPU get high performance and balance between two capabilities and keep high accuracy same as SpectreX simulation engine. This paper introduces using SpectreX-GPU to accelerate simulation and verification in different types of cases on GPU device. It helps designers shrink simulation time, improve verification efficiency and coverage without accuracy loss.
Key words : SpectreX-GPU；high-precision large-scale circuit；advanced processes nodes；accelerating simulation verification
引言
隨著先進(jìn)制程工藝節(jié)點的突破性發(fā)展，集成電路規(guī)模與設(shè)計復(fù)雜度不斷攀升，特別是先進(jìn)工藝后仿真中引入了更加復(fù)雜的器件模型、指數(shù)級增長的寄生參數(shù)以及大量需要簽核的工藝角。模擬電路仿真中龐大的矩陣求解，復(fù)雜的模型評估，解算過程中的多次迭代及高精度收斂標(biāo)準(zhǔn)，對仿真器的計算能力和準(zhǔn)確性提出了極高的要求，傳統(tǒng)基于中央處理器（Central Processing Unit, CPU）的模擬電路仿真器面臨計算效率瓶頸。隨著圖形處理器（Graphics Processing Unit, GPU）的不斷發(fā)展，憑借其海量并行計算單元與高帶寬顯存架構(gòu)使得矩陣運算變得更加高效，GPU加速技術(shù)逐漸成為突破這一困境、提高驗證效率的核心路徑之一。
本文一共列舉了3個先進(jìn)工藝大規(guī)模后仿真的用例，在滿足精度的情況下，如何使用 SpectreX-GPU提高仿真驗證效率。
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作者信息：
張朝霖1，黃詩琦2，劉歡艷2
（1.紫光展銳（上海）科技股份有限公司，上海 201203；
2.上?？请娮涌萍加邢薰?，上海 200120）
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