def main():
logger.info('Starting...')
file_path = DATASETS_PATH / 'cordeau-laporte' / 'a2-16.txt'
solver = jit.Solver(
loader_kwargs={
'file_path': file_path,
},
algorithm=jit.MilpAlgorithm,
algorithm_kwargs={
# 'solver': lp.XPRESS(msg=1, path=str(BASE_PATH / 'tmp' / 'xpressmp' / 'bin' / 'optimizer')),
# 'solver': lp.GUROBI_CMD(msg=1),
# 'solver': lp.CPLEX_CMD(msg=1, path=str(BASE_PATH / 'tmp' / 'cplex' / 'bin' / 'x86-64_osx' / 'cplex')),
'solver': lp.SCIP(msg=1),
# 'solver' :lp.PULP_CBC_CMD(msg=1, threads=4),
},
storer=jit.StorerSet,
storer_kwargs={
'storer_cls_set': {
jit.PromptStorer,
jit.GraphPlotStorer,
},
})
result = solver.solve() # noqa
logger.info('Finished...')
def test_scip(self, ilp):
"""Test method for SCIP."""
try:
ilp.solve(pulp.SCIP())
assert round(pulp.value(ilp.objective), 0) == 5
except pulp.solvers.PulpSolverError:
pytest.fail(f"Solver not installed")
def _get_solver(solver_name, timelimit):
if solver_name == "cplex":
return pulp.CPLEX_PY(msg=0, timeLimit=timelimit)
elif solver_name == "gurobi":
return pulp.GUROBI(msg=0, timeLimit=timelimit)
elif solver_name == "glpk":
return pulp.GLPK(msg=0, options=["--tmlim", str(timelimit)])
elif solver_name == "cbc":
return pulp.COIN(msg=0, maxSeconds=timelimit)
elif solver_name == "scip":
return pulp.SCIP(msg=0,
options=["-c", f"set limits time {timelimit}"])
raise ValueError("Invalid Solver Name")