The Hierarchical Evaluation Tool HIT
The Hierarchical Evaluation Tool HIT
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分层评估工具 HIT
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
Christel Wysocki
中科院分区：
文献类型：
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作者：
H. Beilner;J. Mater;Christel Wysocki
软件工具HIT提供了计算和通信系统在其生命周期的所有阶段的基于模型的性能评估。动态、离散事件、随机系统（模型）的规范化是通过特定的基于语言和图形的描述选项来实现的。相应指定的模型的性能评估是由各种技术的模拟和分析类型的支持。1 Properties/Model World HIT是一个支持基于模型的计算系统性能评估的综合软件工具。HIT模型表现出高度结构化的系统进行评估，基于（垂直）功能层次结构和（水平）模块化，在现代软件工程和硬件架构的方法。HIT模型世界是根据计算系统结构的流行观点定制的，即垂直地将系统划分为一系列层和级别，通过函数调用进行通信，并共同表示虚拟机的层次结构;水平地划分为独立的、相互保护良好的信息隐藏模块，每个模块实现在特定级别提供的功能的某个子集。虽然最初是为了评估计算系统的性能而开发的，但HIT也适用于分析类似的系统，如通信和ooce系统，运输和物流系统以及其他所有动态，离散事件，随机类型的系统。2规范模型的规范由特定的模型描述语言HI-SLANG和/或图形界面HITGRAPHIC支持。
The software tool HIT provides for model-based performance evaluation of computing and communication systems during all phases of their life cycle. Speciication of (models of) dynamic, discrete-event, stochastic systems is achieved by particular language-and graphics-based description options. Performance evaluation of accordingly speciied models is supported by a variety of techniques of the simulative and analytical types. 1 Properties/Model World HIT is a comprehensive software tool supporting the model-based evaluation of computing system performance. HIT models exhibit a highly structured view of the systems to be assessed, based on (vertical) functional hierarchies and (horizontal) modularizati-on as employed in modern software engineering and hardware architecture approaches. The HIT model world is tailored upon the prevailing view of computing system structures as partitioning a system vertically, into a sequence of layers and levels, communicating via function calls, and jointly representing a hierarchy of virtual machines; horizontally, into independent, mutually well-protected, information-hiding modules , each realizing some subset of functions to be provided at a particular level. Although originally developed for evaluating computing system performance, HIT also lends itself to the analysis of similar" systems such as communication and ooce systems, transport and logistic systems and others, all of the dynamic, discrete-event, stochastic type. 2 Speciication The speciication of models is supported by a particular model description language, HI-SLANG, and/or a graphical interface, HITGRAPHIC.