On one hand, for conventional force field, DMFF is not as efficient as the highly optimized C++ code in the mainstream MD programs like LAMMPS or OpenMM. In the current stage, DMFF does not pursue extreme performance in large-scale simulations, but rather focuses on fast force field optimization. Therefore, for conventional force fields, it is recommended to deploy the model directly in OpenMM. For this purpose, DMFF provides a "render" function that can export the parameter object into an xml file, which is readily to be used in OpenMM. On the other hand, for developers who are exploring complex function forms that are not well-supported by the mainstream MD codes, DMFF can be also used as the force computation engine. In these scenarios, as we discussed in the introduction section, we often need to perform small scale validation runs, so the bottleneck is often the coding process, rather than the production run. For this purpose, we implemented an i-PI interface for DMFF, such that MD simulations can be run directly using the DMFF force engine. In future, interfaces with other more efficient MD programs (such as LAMMPS) is also to be developed.