GAMS World Forum

<r><br/> <br/> Hi,<br/> <br/> If you use the MSDOS icon (all the way to the right in the GAMS IDE)<br/> to open a command shell you should be located in the directory where<br/> all your GAMS files reside, this is also called the project directory.<br/> If you don't, just use "cd \my\dir\to\go" to c...

<r><br/> <br/> HI,<br/> what is the exact syntax for running a GAMS program from DOS i VE DONE<br/> THE FOLLOWING<br/> C:\progra~1\GAMS22.3\GAMS modelname wdir=d:\foldername<br/> <br/> (IF I AM CORRECT wdir = the directory where my gams model is saved on<br/> it)<br/> <br/> and i always have errors....

<r><br/> <br/> Hi,<br/> First of all, sorry for asking too many questions, but i really need<br/> your help.I have tried the simple approach and i was not able to open<br/> the GAMS file from DOS.Although i wrote the correct syntax it always<br/> gives me error messages such as "unable to open input...

<r><br/> Originally, GAMS finds and saves the solution of the relaxed problem. If no integer solution is found, the best solution will be the relaxed solution. If GAMS -within the allocated time to it- cannot evaluate all possible nodes in the tree, the integer solution GAMS has found is compared to...

<r><br/> <br/> Hi,<br/> <br/> after getting GAMS output, all the time I thought that the relative<br/> gap represents the gap of found integer solution and optimal solution.<br/> however now I wonder that belove best possible solution is the<br/> solution of LP relaxation or the optimal integer solu...

<r><br/> We are happy to invite you to our pre-conference GAMS workshop at the International Federation of Operational Research Societies Conference 2008 in Sandton, South Africa at July 13.<br/> <br/> This workshop will show you how to use the GAMS modeling and rapid prototyping tools in an efficie...

<r><br/> <br/> Dear Carlos!<br/> <br/> <br/> <br/> Usually<br/> <br/> I am did not took part in any discusssion or any explanation<br/> <br/> <br/> <br/> This is possibly firt letter<br/> <br/> <br/> <br/> 1) I know and use GAMS AMPL MPL XPress-IVE XPress-MP XPress-kalis <br/> <br/> AIMS<br/> <br/> ...

<r><br/> <br/> Jeff,<br/> <br/> When GAMS introduced cone constraints, MOSEK did not have the<br/> capability of solving cone models with discrete variables. So GAMS<br/> checked this and rejected such models. MOSEK evolved but the<br/> restriction stayed. So at one time it was a feature, now I woul...

<r><br/> <br/> Andy,<br/> <br/> I don't know of any way doing this without listing all the<br/> (set,parameter) symbols in an execute_unload statement. If you just do<br/> 'execute_unload "allsymbols.gdx";' as your last line, GAMS will export<br/> everything (including vars and equs) to the GDX cont...

<r><br/> <br/> Hi<br/> <br/> I would like to make a gdx dump of all the sets/paramters/scalars of<br/> my model, but I do not want any equations or variables in there at<br/> all.<br/> <br/> Because our model solves iteratively some the sets/parameters/scalars<br/> get changed as it loops around loo...