Speaker
Kristián Kadlubiak
(Brno University of Technology)
Description
Non-uniform-timestep Distributed Pseudospectral Method allows different timestep sizes in different sub-domains of simulation. This requires special care when marching overlap regions forward in time. Overlap regions have to be evaluated at timesteps to match the neighbor's temporal discretization. This process involves the extrapolation of such values using a modified integration scheme. To minimize introduced error, extrapolation should be executed as late as possible. Under certain circumstances, this leads to a deadlock. In this poster, I will present necessary and sufficient condition that allows the deadlock to occur, detailed schematics of such case and simple solution that resolves the issue.
Primary author
Kristián Kadlubiak
(Brno University of Technology)
