随着片上系统(System on Chip,SoC)芯片规模与功能复杂度的膨胀,硬件加速器已成为大规模SoC的重要组成部分。为了缩短产品交付时间,有必要开发硬件加速器仿真模型,以在SoC设计初期支撑架构的探索与评估。在对硬件加速器的特点与建模需...随着片上系统(System on Chip,SoC)芯片规模与功能复杂度的膨胀,硬件加速器已成为大规模SoC的重要组成部分。为了缩短产品交付时间,有必要开发硬件加速器仿真模型,以在SoC设计初期支撑架构的探索与评估。在对硬件加速器的特点与建模需求进行分析的基础上,提出一种基于AXI验证IP(Verification IP,VIP)、SystemVerilog信箱和旗语的硬件加速器建模方法。该方法支持完备的总线协议特性,同时支持多个处理引擎的并行处理与乱序输出。以实际SoC项目中的通信基带加速器为例,对提出的建模方法进行介绍,并进行相应的系统级仿真与分析。所提出的建模方法可实现对硬件加速器总线行为的高效建模,能够有力支撑SoC验证以及系统架构评估,缩短项目的开发周期。展开更多
The Yellow River Basin faces water scarcity and ecological fragility.Changes on the land surface,characterized by large-scale soil and water conservation measures,have a significant impact on river runoff and ecologic...The Yellow River Basin faces water scarcity and ecological fragility.Changes on the land surface,characterized by large-scale soil and water conservation measures,have a significant impact on river runoff and ecological environment.However,there are still great uncertainties in the scientific understanding of the mechanisms by which multiple driver impact eco-hydrological processes due to the diversity of land surfaces and the complexity of the coupling processes.As an international scientific frontier on interdisciplinary studies in climatology,hydrology,ecology,and other related fields,it is significant to study the mechanisms and assess the impacts of land surface change on eco-hydrological risk to support ecological restoration plan and sustainable water resources utilization in the Yellow River Basin.Taking the Yellow River Basin as the study area,this study proposes several important research initiatives,focusing on addressing the ecological and water resources problems in the Loess Plateau.These initiatives include(1)to quantify the individual effect of land surface elements(e.g.,vegetation,terraces,and check dam)and reveal the nonlinear driving mechanisms of multiple drivers on eco-hydrological processes;(2)to construct a distributed eco-hydrological model that couples dynamic land surface features,and simulate eco-hydrological processes in a changing environment;(3)to improve the ecological risk assessment indicator system and methods for assessing the impacts of land surface changes on eco-hydrological synergistic functions and ecological risk;(4)to establish an ecological regulation model based on multiobjective game theory and adopt an adaptive regulation mode for ecological risk management.The research could enrich the scientific understanding and theory of eco-hydrology,and prompt disciplinary studies of ecology,hydrology,climatology,and other fields.The expected academic achievements will innovate eco-hydrological simulation and assessment techniques in a changing environment,and strongly support the implementation of the national strategy for ecological protection and high-quality development in the Yellow River Basin.展开更多
文摘随着片上系统(System on Chip,SoC)芯片规模与功能复杂度的膨胀,硬件加速器已成为大规模SoC的重要组成部分。为了缩短产品交付时间,有必要开发硬件加速器仿真模型,以在SoC设计初期支撑架构的探索与评估。在对硬件加速器的特点与建模需求进行分析的基础上,提出一种基于AXI验证IP(Verification IP,VIP)、SystemVerilog信箱和旗语的硬件加速器建模方法。该方法支持完备的总线协议特性,同时支持多个处理引擎的并行处理与乱序输出。以实际SoC项目中的通信基带加速器为例,对提出的建模方法进行介绍,并进行相应的系统级仿真与分析。所提出的建模方法可实现对硬件加速器总线行为的高效建模,能够有力支撑SoC验证以及系统架构评估,缩短项目的开发周期。
基金National Natural Science Foundation of China(U2243228,52121006)National Key Research and Development Programs of China(2021YFC3201100,2022YFC3205200)State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering(2022nkzd01,2021nkz490211).
文摘The Yellow River Basin faces water scarcity and ecological fragility.Changes on the land surface,characterized by large-scale soil and water conservation measures,have a significant impact on river runoff and ecological environment.However,there are still great uncertainties in the scientific understanding of the mechanisms by which multiple driver impact eco-hydrological processes due to the diversity of land surfaces and the complexity of the coupling processes.As an international scientific frontier on interdisciplinary studies in climatology,hydrology,ecology,and other related fields,it is significant to study the mechanisms and assess the impacts of land surface change on eco-hydrological risk to support ecological restoration plan and sustainable water resources utilization in the Yellow River Basin.Taking the Yellow River Basin as the study area,this study proposes several important research initiatives,focusing on addressing the ecological and water resources problems in the Loess Plateau.These initiatives include(1)to quantify the individual effect of land surface elements(e.g.,vegetation,terraces,and check dam)and reveal the nonlinear driving mechanisms of multiple drivers on eco-hydrological processes;(2)to construct a distributed eco-hydrological model that couples dynamic land surface features,and simulate eco-hydrological processes in a changing environment;(3)to improve the ecological risk assessment indicator system and methods for assessing the impacts of land surface changes on eco-hydrological synergistic functions and ecological risk;(4)to establish an ecological regulation model based on multiobjective game theory and adopt an adaptive regulation mode for ecological risk management.The research could enrich the scientific understanding and theory of eco-hydrology,and prompt disciplinary studies of ecology,hydrology,climatology,and other fields.The expected academic achievements will innovate eco-hydrological simulation and assessment techniques in a changing environment,and strongly support the implementation of the national strategy for ecological protection and high-quality development in the Yellow River Basin.
