Student Posters Repository

Accurately modelling the dynamics of strong-field, high velocity astrophysical phenomena such as binary black hole mergers require large-scale numerical calculations on HPC systems. Conventional numerical relativity codes employ a spatial discretization scheme, which leads to considerable communication overheads at each time step and severely limits their ability to achieve high levels of parallelism possible on modern HPC architectures. A spacetime discretization scheme, with patch boundaries conforming to null or space-like surfaces can significantly reduce this overhead, leading to increased parallel efficiency. As the first step towards evolving the Einstein’s equations in full generality, we implement a spacetime discretization approach to solve the scalar wave equation on a 1+1D conformally compactified spacetime. Our approach to domain decomposition allows us to concurrently compute multiple space-time elements on a single multi-core CPU, with minimal communication between elements, paving the way for future explorations in higher dimensions.