SPP 1648: SPPEXA - Software for Exascale Computing - Project EXASTEEL: Bridging Scales for Multiphase Steels

Type of Funding: DFG Programmes, Priority Programmes

The computational simulation of advanced high strength steels, incorporating phase transformation phenomena at the microscale, on the future supercomputers developed for exascale computing is considered in this project. To accomplish this goal, new ultra-scalable, robust algorithms and solvers have to be developed and incorporated into a new application software for the simulation of this three dimensional multiscale materials science problem. Such algorithms must specifically be designed to allow the efficient use of the hardware. Here, a direct multiscale approach (FE2) will be combined with new, highly efficient, parallel solver algorithms. For the latter algorithms, a hybrid algorithmic approach will be taken, combining nonoverlapping parallel domain decomposition (FETI) methods with efficient, parallel multigrid preconditioners. A comprehensive performance engineering approach will be implemented to ensure a systematic optimization and parallelization process across all software layers. The envisioned scale-bridging will still require a computational power which will only be obtainable when exascale computing becomes available. The FE2 methods has shown to be scalable on the complete JUQUEEN supercomputer at Forschungszentrum Jülich (BG/Q with 458 752 cores).

Project Website

Contact Person at UA Ruhr:
Prof. Dr. Axel Klawonn, University of Cologne

UA Ruhr Researchers:
Prof. Dr.-Ing. Daniel Balzani, Ruhr-Universität Bochum
Prof. Dr.-Ing. Jörg Schröder, University of Duisburg-Essen

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