An algorithm for massively parallel dislocation dynamics simulations of small scale plasticity

Abstract

Accurate modeling of dislocation motion in bounded bodies is essential for the goal of obtaining desired properties, for example electronic or optical, of many microelectronic devices. At present, we lack high fidelity computer codes for such modeling that efficiently utilize modern parallel computer architectures. In contrast, many dislocation simulation codes are available for periodic or infinite bodies. In principle, these codes can be extended to allow for dislocation modeling in finite bodies. However, such extension may involve an additional solver to be employed, coupled with a dislocation simulation code. We present an algorithm for development of parallel dislocation simulation capability for bounded bodies based on such coupling. Subsequently, we analyze the performance of the algorithm for a demanding dislocation dynamics model problem.