Student Posters Repository

An exponential increase of computational throughput of supercomputers enables researchers to perform simulations with unprecedented accuracy. On the other hand, such simulations require extremely large amount of data to be stored on a disk and analyzed. The storage bandwidth performance, however, has not grown up as rapidly as the computational power. In practice, the data coming from the simulations have to be stored only at several time-steps or at much coarser resolution than the original data. A significant part of information may be potentially lost. In situ visualization could circumvent the bottleneck of data transfer. By coupling the visualization and simulation together, one may process and analyze the simulation data at high spatial and temporal resolutions while it is being generated and without the necessity of first storing the data to persistent storage. Recently, we have instrumented code EPOCH with ParaView Catalyst. EPOCH is massively parallel, multi-dimensional plasma physics simulation code based on the particle-in-cell method. ParaView Catalyst is a library that has been designed for in situ coupling of numerical codes with state-of-the-art visualization system. Here we present our implementation strategy, performance analyses and demonstrate the in situ capabilities on several large-scale laser-plasma simulations.