A Highly Parallelizable Bond Fluctuation Model on the Body-Centered Cubic Lattice

We present a new Monte Carlo method which is based on the original Bond Fluctuation Model (scBFM) for simulating polymeric systems in three dimensions. A body centered cubic lattice is used instead of a simple cubic lattice. This modified Bond Fluctuation Model (bccBFM) fulfills the same requirements as the original scBFM, namely excluded volume and the cut-avoidance of bond vectors. Most remarkably the algorithm allows for a very efficient parallelization. This leads to a performance gain of about two orders of magnitude, when using graphics processor units (GPU). The bccBFM shows universal behavior both for static and dynamic properties and can be used to solve the same problems as the original scBFM, but provides an efficient implementation especially on GPUs.