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GRBModel()
Constructor for GRBModel. The simplest version creates an
empty model. You can then call
addVar and
addConstr to populate
the model with variables and constraints. The more complex
constructors can read a model from a file, or make a copy of an
existing model.
| GRBModel | GRBModel ( | const GRBEnv& | env ) |
Model constructor.
Arguments:
env: Environment for new model.
Return value:
New model object. Model initially contains no variables or constraints.
| GRBModel | GRBModel ( | const GRBEnv& | env, |
| const string& | filename ) |
Read a model from a file. Note that the type of the file is encoded
in the file name suffix. Valid suffixes are .mps,
.rew, .lp, .rlp, .dua, .dlp,
.ilp, or .opb. The files can be compressed, so
additional suffixes of .zip, .gz, .bz2, or
.7z are accepted.
Arguments:
env: Environment for new model.
modelname: Name of the file containing the model.
Return value:
New model object.
| GRBModel | GRBModel ( | const GRBModel& | model ) |
Create a copy of an existing model. Note that due to the lazy update approach in Gurobi, you have to call update before copying it.
Arguments:
model: Model to copy.
Return value:
New model object. Model is a clone of the original.
| GRBModel | GRBModel ( | const GRBModel& | model, |
| const GRBEnv& | targetenv ) |
Copy an existing model to a different environment. Multiple threads can not work simultaneously within the same environment. Copies of models must therefore reside in different environments for multiple threads to operate on them simultaneously.
Note that this method itself is not thread safe, so you should either call it from the main thread or protect access to it with a lock.
Note that pending updates will not be applied to the model, so you should call update before copying if you would like those to be included in the copy.
For Compute Server users, note that you can copy a model from a client to a Compute Server environment, but it is not possible to copy models from a Compute Server environment to another (client or Compute Server) environment.
Arguments:
model: Model to copy.
targetenv: Environment to copy model into.
Return value:
New model object. Model is a clone of the original.
