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The Discrete Slip-Link Model (DSM) is a mathematical model that describes the dynamics of flexible entangled polymer melts.

GPU DSM is a computational implementation of that model on CUDA/C++. GPU DSM is developed in The Center for molecular study of condensed soft matter (μCoSM). GPU DSM is free open-source software under the GNU GPL v3.0 license.

In DSM polymer chain is viewed as a random walk with the length of Kuhn step, constrained by entanglements fixed in space (Figure 1).

Figure 1. Chain with entanglements

Model variables are number of Kuhn steps trapped between entanglements N_i and separation between them Q_i.

Figure 2. Model variables