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solvers: silence version output of highs #479

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Merged
FabianHofmann merged 1 commit into from
Sep 4, 2025
Merged

solvers: silence version output of highs #479

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26 changes: 16 additions & 10 deletions linopy/solvers.py
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Original file line number Diff line number Diff line change
Expand Up @@ -460,6 +460,7 @@ def solve_problem_from_file(

# Use HiGHS to parse the problem file and find the set of variable names, needed to parse solution
h = highspy.Highs()
h.silent()
h.readModel(path_to_string(problem_fn))
variables = {v.name for v in h.getVariables()}

Expand Down Expand Up @@ -755,11 +756,11 @@ def solve_problem_from_model(
)

h = model.to_highspy(explicit_coordinate_names=explicit_coordinate_names)
self._set_solver_params(h, log_fn)

return self._solve(
h,
solution_fn,
log_fn,
warmstart_fn,
basis_fn,
model=model,
Expand Down Expand Up @@ -804,23 +805,35 @@ def solve_problem_from_file(

problem_fn_ = path_to_string(problem_fn)
h = highspy.Highs()
self._set_solver_params(h, log_fn)

h.readModel(problem_fn_)

return self._solve(
h,
solution_fn,
log_fn,
warmstart_fn,
basis_fn,
io_api=read_io_api_from_problem_file(problem_fn),
sense=read_sense_from_problem_file(problem_fn),
)

def _set_solver_params(
self,
highs_solver: highspy.Highs,
log_fn: Path | None = None,
) -> None:
if log_fn is not None:
self.solver_options["log_file"] = path_to_string(log_fn)
logger.info(f"Log file at {self.solver_options['log_file']}")

for k, v in self.solver_options.items():
highs_solver.setOptionValue(k, v)

def _solve(
self,
h: highspy.Highs,
solution_fn: Path | None = None,
log_fn: Path | None = None,
warmstart_fn: Path | None = None,
basis_fn: Path | None = None,
model: Model | None = None,
Expand Down Expand Up @@ -877,13 +890,6 @@ def _solve(
highspy.HighsModelStatus.kUnknown: TerminationCondition.unknown,
}

if log_fn is not None:
self.solver_options["log_file"] = path_to_string(log_fn)
logger.info(f"Log file at {self.solver_options['log_file']}")

for k, v in self.solver_options.items():
h.setOptionValue(k, v)

if warmstart_fn is not None and warmstart_fn.suffix == ".sol":
h.readSolution(path_to_string(warmstart_fn), 0)
elif warmstart_fn:
Expand Down
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