Application Motivation IV: Numerical Relativity (Contd.)
Fortran90 (array syntax) very attractive to handle equations which are naturally written in Tensor (multi-dimensional) form
12 independent field values defined on a mesh with black holes excised -- non trivial dynamic irregularity as holes rotate and spiral into each other in interesting domain
Irregular dynamic mesh is not so natural in (parallel) Fortran 90 and one needs technology (including distributed data structures like DAGH) to support adaptive finite difference codes.
Separate Holes are simulated till Merger