tpbconv

The program tpbconv can perform four functions on run input (.tpr) files:

1. Modify the number of steps to run in a simulation (for example, to extend a simulation)
2. Create a new input file in the case of a crash (for GROMACS version 3.x, see Doing Restarts)
3. Create a new run input (.tpr) file that contains only a subset of the original atoms (i.e., only Cα atoms for analysis)
4. Set charges in a specific group to zero