Solver report

The next section in the LST file is the part of the solve summary that is particular to the solver program that has been used.  This section normally begins with a message identifying the solver and its authors: BDMLP was used in the example here.  There will also be diagnostic messages if anything unusual was detected, and specific performance details as well, some of them technical.  The solver manuals will help explain these.

The solver report from the example is

BDMLP 1.3     Mar 21, 2001 WIN.BD.NA 20.0 056.043.039.WAT

 Originally developed by

  A. Brooke, A. Drud, and A. Meeraus,

  World Bank, Washington, D.C., U.S.A.

 Work space allocated           --    0.02 Mb

         EXIT -- OPTIMAL SOLUTION FOUND.

In case of serious trouble, the GAMS LST file will contain additional messages printed by the solver.  This may help identify the cause of the difficulty.  If the solver messages do not help, a perusal of the solver manual or help from a more experienced user is recommended.  This information can be standardly included by entering a line containing the statement Option sysout = on ; in the program above the solve statement.