About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
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Algorithm Development in Materials Science and Engineering
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Presentation Title |
ExaCA: An Exascale-capable Cellular Automata Code for Microstructure Modeling |
Author(s) |
Matt Rolchigo, Samuel Reeve, John Coleman, Benjamin Stump, Alex Plotkowski, Jim Belak |
On-Site Speaker (Planned) |
Matt Rolchigo |
Abstract Scope |
ExaCA, an exascale-capable cellular automata application, is a grain-scale microstructure modeling tool designed to simulate as-solidified alloys during additive manufacturing (AM). As part of the Exascale Computing Project (ECP) and ExaAM workflow, ExaCA must leverage new node architectures (e.g. GPUs) for high performance computing. We will show how CA is implemented with the performance portable Kokkos library and compare performance across parallel backends for AM test problems. Additionally, we will discuss the “sparse” and “extended” input data formats for time-temperature history from the process model, which result in computational cost – accuracy tradeoffs. Simulated microstructures with varying levels of model approximations will be compared to those characterized from AM benchmark experiments. Continuing work will involve analysis of the simplifying assumptions of the process-microstructure modeling approach, with identification of needs for more rigorous modeling, additional input data, as well as performance considerations necessitated by these model improvements. Supported by ECP (17-SC-20-SC). |
Proceedings Inclusion? |
Planned: |