Geoinformatics: A Petascale Cyberfacility for Physics-Based Seismic Hazard Analysis (PetaSHA-2)

这个项目是从2001年开始的社区建模环境(CME)发展而来的。PetaSHA项目试图在NSF的目标基础上再接再厉，即在2010年前使Petascale计算机运行。该计划是将动态破裂模拟的分辨率提高一个数量级，以更好地理解所涉及的物理。首席调查人员还计划将地面运动模拟的频率提高到1赫兹以上，并在南加州使用逼真的3D结构模型。这些结构模型将使用全3D波形层析成像进行验证和改进。所有这些计算密集的任务都将被用来为概率地震危险性分析注入更多的物理因素。这个项目(PetaSHA-2)是2006年10月开始的PetaSHA-1的后续项目。它将受益于PetaShake平台，该平台由NSF/OCI的PetaApps计划提供资金。该项目与PetaShake项目紧密结合。该项目的一个目标是将PetaSHA-1的性能扩展到千万亿次浮点运算，并增加了一些新功能，如全3D波形层析成像(F3DT)和宽带交付平台。大部分工作将致力于开发必要的基础设施，以达到千万亿次的规模。

This project is an outgrowth of the Community Modeling Environment (CME) that began in 2001. The PetaSHA project attempts to build on NSF's goal of having petascale computers operational by 2010. The plan is to increase the resolution of dynamic rupture simulations by an order of magnitude to gain a better understanding of the physics involved. The Principal Investigators also plan to increase the frequency of ground motion simulations above 1 Hz and to use realistic 3D structural models for Southern California. These structural models will be validated and improved using full 3D waveform tomography. All of these computationally-intensive tasks will be used to inject more physics into probabilistic seismic hazard analysis.This project (PetaSHA-2) is a follow-on to PetaSHA-1, which began in October, 2006. It will benefit from the PetaShake platform which is being funded under NSF/OCI's PetaApps program. This project is tightly coupled to the PetaShake project. A goal of this project is to scale the performance of PetaSHA-1 to petaflops, along with the addition of a few new capabilities, such as full 3D waveform tomography (F3DT) and the BroadBand delivery platform. Much of the work will be devoted to developing the infrastructure necessary to scale to petaflops.