Using SOL file format

Describes content of SOL file with respect to the barrier optimizer and crossover.

When you use the CPLEX barrier optimizer with no crossover, you can save the primal and dual variable values and their associated reduced cost and dual values in a SOL-format file (that is, a solution file with the extension .sol). You can then read that solution file into CPLEX before you initiate a crossover at a later time. After you read a solution file into CPLEX, all three optimizers (primal simplex, dual simplex, and barrier simplex) automatically invoke crossover. See the CPLEX File Formats Reference Manual, especially SOL file format: solution files, for more about solution files.