...
Occasionally there is interest in GAMS, but it is currently not available on the cluster. A few GAMS PC licenses are held by faculty throughout Tufts. If you have GAMS code and need to run it without having a license you should consider the public GAMS server service. Check Also check the GAMS Model Library page. This service allows you to submit your GAMS code via a web interface. Results are returned to you via email.
Alternatively, Matlab's Optimization Toolbox and Mathematica may also address your problem setting for mathematical programming problems.