Concept and workflow of VIKING. Computational tasks are configured in the web interface by supplying the input data (structures, potentials, input field values etc), from the local computer or an online database. The simulation is then performed on a supercomputer (Stampede2, Marconi and Abacus 2.0 are currently supported), the results are aggregated and represented visually in the web browser. Supercomputer photograph courtesy of iStockphoto LP. Copyright 2012.