Postdoc: Multidisciplinary Research in Numerical Relativity within the Context of High Performance, Massively Parallel Computing

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9503978 Seidel The cross fertilization across different disciplines that has been the hallmark of many successful fields of computational science has been slow to occur in Numerical relativity. The proposal is designed to bring maturity to a promising new approach for solving Einstein's equations, based on a new formulation that casts them in an explicitly first order, flux-conservative, hyperbolic form. This approach opens the door to borrowing powerful modern algorithms from other fields. Building on this the PI's plan to incorporate appropriate mathematical formalisms, scaleable computers, sophisticated parallel and numerical algorithms (including advanced methods for hyperbolic systems and optimized linear solvers) and experimental scientific visualization techniques (such as virtual reality) into a single code. A preliminary version has already been developed with this global approach, running with outstanding performance on fundamentally different parallel architectures. The PI's propose the construction of a general controller that distributes computation, visualization, and data analysis across the metacenter. The physical applications will include: a general 3D gravitational wave laboratory, 3D black hole simulations, bosonic stars as a testbed for colliding objects, and fully general relativistic hydrodynamics. A single, very general and powerful research tool can be developed, and the resulting experience can be applied into other fields of computational science, making this proposal a truly multidisciplinary effort.