The famous Hollywood filming technique will change the way we access the huge computer simulations of the future, say computer scientists.
In the coming era of exascale supercomputing, in-situ visualization is an inevitable approach to reduce the output data size. A problem of the in-situ visualization is that it loses interactivity unless a steering method is adopted. A group of scientists has now proposed new method for interactive analysis of in-situ visualization images produced by a batch simulation job. A key idea is to apply a lot of--from thousands to millions of--in-situ visualizations at once. Then the viewer analyze the image database interactively in the post processing. When each movie is compressed to the order of 10 MB, the total size of one million movies is only the order of 10 TB that is smaller than the size of raw numerical data in exascale supercomputing. A feasibility study of the proposed method has been successfully performed. Multiple movie files are produced by a simulation and they are analyzed with a specially designed movie player. One can interactively change the view angle, visualization method, and their parameters by retrieving a proper sequence of images form the movie data set.
Via Sakis Koukouvis