Decay dimerization model

The decay dimerisation (DD) model is non-stiff, and the simplest model system used, with 3 species and 4 reaction channels.

This model was included for comparison with StochKit, as it ships as an ODM example for both the serial and MPI versions, has results in a recent summary, and is used in Hong Li and Linda Petzold’s recent work implementing SSA on the GPU.