Long-time simulation of full-scale 3D vibration simulator for an entire nuclear power plant by coupling HPC machines on grid

Kim, G.; Nakajima, Kohei*; Teshima, Naoya*; Tatekawa, Takayuki; Suzuki, Yoshio   ; Takemiya, Hiroshi

So far, we have developed Full-scale 3D vibration simulator for an Entire Nuclear Power Plant (NPP) which is simulation platform to analyze seismic response of a whole NPP. In this work, we introduced pipelined data-transfer scenario in which boundary condition data between NPP components are transferred each time step from large components to small ones and developed grid-enabled application to perform this simulation using various HPC resources. In doing so, we confronted two problems; first, how to realize the scenario on grid and second, to automate simulation restarting. As solution of these problems, we used Simple Orchestration Application Framework (SOAF) which enabled the introduced scenario to be realized in easy and simple way for a long-time. Using the SOAF, we developed grid-enable application and succeeded seismic analysis simulation of a test reactor in the scenario for about a week. In this symposium, the details of all of this work will be presented.