A Gurobi parameter (PRM) file is used to specify parameter settings. Reading a parameter file (using GRBread, for example) causes the parameters specified in the file to take the specified values.
The file consists of parameter-value pairs, each on its own line. Any line that begins with the hash sign (#) is a comment line and is ignored. The following is a simple example:
# Parameter settings Cuts 2 Heuristics 0.5
If an unknown parameter name is listed in the file, a warning is printed and the associated line is ignored.