We present the VECMA toolkit (VECMAtk), a flexible software environment for single and multiscale simulations that introduces directly applicable and reusable procedures for verification, validation (V&V), sensitivity analysis (SA) and uncertainty quantification (UQ). It enables users to verify key aspects of their applications, systematically compare and validate the simulation outputs against observational or benchmark data, and run simulations conveniently on any platform from the desktop to current multi-petascale computers. In this sequel to our paper on VECMAtk which we presented last year, we focus on a range of functional and performance improvements that we have introduced, cover newly introduced components, and applications examples from seven different domains such as conflict modelling and environmental sciences. We also present several implemented patterns for UQ/SA and V&V, and guide the reader through one example concerning COVID-19 modelling in detail.

中文翻译：

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VECMAtk：用于科学模拟的可扩展验证、验证和不确定性量化工具包

我们介绍了 VECMA 工具包 (VECMAtk)，这是一种用于单尺度和多尺度模拟的灵活软件环境，它引入了直接适用和可重用的验证、验证 (V&V)、灵敏度分析 (SA) 和不确定性量化 (UQ) 程序。它使用户能够验证其应用程序的关键方面，根据观察或基准数据系统地比较和验证模拟输出，并在从台式机到当前多千万亿级计算机的任何平台上方便地运行模拟。在我们去年发表的 VECMAtk 论文的续篇中，我们重点介绍了我们引入的一系列功能和性能改进，涵盖了新引入的组件以及来自冲突建模和环境科学等七个不同领域的应用示例。