General GAMSBAS Information – Bruce McCarl

Source: https://agecoresearch.tamu.edu/mccarl/gams-related-information/general-gamsbas-information/ Parent: https://agecoresearch.tamu.edu/mccarl/

\ What are the basic functions of GAMSBAS?\ \ How is GAMSBAS used in a GAMS program?\ \ How do I obtain GAMSBAS?\ \ How can I get a copy of the latest writeup?\ \

Basic Functions of GAMSBAS\ \ GAMSBAS saves an advanced basis which a user may later use in subsequent solves by including the basis\ \ Top of Document\

\ How is GAMSBAS used in a GAMS program?\ There are three elements to the use of GAMSBAS\

Modification of the GAMS program
- In the GAMS program you must make GAMSBAS the substiute solver by entering a line like\ option lp=gamsbas; The rest of the program is like any other GAMS model.\
Creation of the bas file
- GAMSBAS creates the saved basis on a *.bas file where the * refers to the filename from the GAMS execution instruction. Thus if you are solving a model called trnsport you receive a file called trnsport.bas.\
Usage of the bas file
The user can use the *.bas file in future solves by inserting the command\ $include *.bas (with the appropriate file name)\ in a subsequent GAMS program