About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
|
Algorithms Development in Materials Science and Engineering
|
Presentation Title |
10-fold faster molecular dynamics: 100 µs of grain boundary evolution |
Author(s) |
Tomas Oppelstrup, Timofey Frolov |
On-Site Speaker (Planned) |
Tomas Oppelstrup |
Abstract Scope |
Recent advancements in parallel algorithms and computer hardware allow stretching the accessible time scales for atomistic simulation. We have developed a new parallel molecular dynamics code that can achieve an order of magnitude higher simulation speed than typically possible, and reach over 10,000 timesteps per second on GPU hardware. Our implementation is written in C++ and easily extensible and portable to new architectures. Currently it runs on CPUs, and on AMD and nVidia GPUs, despite having only a very small amount of hardware specific code.
As a demonstration of our new code, we performed a 100 µs simulation of a grain boundary in tungsten, allowing a direct observation of a two-dimensional phase transformation. We further discuss the implications of our new simulation capability – it will allow new insights into diffusion limited processes, disconnection climb, and grain boundary creep, to name a few possible applications. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, Modeling and Simulation, |