The Master Module

The master module includes functions that perform problem initialization and I/O. This module is the only persistent module and stores all static problem data. The other modules are created only during a solve call and destroyed afterward. All calls to the API are processed through the master module. These functions of the master module implement the following tasks:

• Initialize the environment.
• Set and maintain parameter values.
• Read and store static problem data for instance to be solved.
• Compute an initial upper bound using heuristics.
• Perform problem preprocessing.
• Initialize the solution process, pass problem information to the solver modules and store the results after completion of the solve call.
• Track the status of associated processes during parallel solution calls.
• Act as a clearing house for output during the solution process.
• Store warm start information between solver calls.
• Service requests from the user through the API for problem data, problem modification, and parameter modification.