Solve a written MPS file locally and emit a HiGHS solution file

The fully local counterpart of the cloud solve leg: reads an MPS file written by write_mps(), solves it in-process with HiGHS, and writes a raw-style solution file that read_highs_solution() / read_mps_solution() consume unchanged. Positional column/row names (c0, r0, ...) are reconstructed from the solver dimensions, matching what write_mps() emits; files with other naming conventions decode correctly only through their own index tables.

Usage

solve_mps(
  file,
  sol_file = NULL,
  control = list(),
  require_optimal = TRUE,
  verbose = FALSE
)

Arguments

file

Path to the MPS file (uncompressed; the HiGHS reader does not accept .gz).

sol_file

Path for the solution file; default file with a .sol extension.

control

Optional list of HiGHS options (e.g. list(solver = "ipm", run_crossover = "on")).

require_optimal

Logical; error unless the run ends optimal.

verbose

Logical; report progress.

Value

A list with status_message, objective, sol_file and run_time (seconds).