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solver:the_d_solvers_gams_conoptd_gams_convertd_and_gams_cplexd [2021/01/08 17:29]
Atharv Bhosekar [GAMS/CplexD versus GAMS/Cplex]
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-====== The "​D"​ solvers (GAMS/​ConoptD,​ GAMS/​ConvertD,​ GAMS/CplexD and GAMS/LGOD) ====== 
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-The "​D"​ solvers GAMS/​ConoptD,​ GAMS/​ConvertD,​ GAMS/CplexD and GAMS/LGOD started as research and development versions of the production solvers GAMS/​Conopt,​ GAMS/​Convert,​ GAMS/Cplex and GAMS/LGO. So these "​D"​ solvers offer some interesting new features that eventually will migrate into the production version. As of distribution 23.6 all new features of GAMS/​ConoptD and GAMS/LGOD have been migrated to the production version and both GAMS/​ConoptD and GAMS/LGOD are merely an alias for GAMS/Conopt and GAMS/LGO. We generally recommend to work with the production version of the solver and only cautiously use the "​D"​ version if the new feature is essential to the model. Backward compatibility is of great concern to us, but with the "​D"​ solvers, the backward compatibility requirements are relaxed (e.g. the ConoptD solver will soon disappear from the list of solvers). 
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-The following describes the differences between the research and development "​D"​ solvers and the production version as of distribution 24.0. 
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-===== Convert and ConvertD ===== 
-The ConvertD "​solver"​ lacks most Convert options. The only Convert options implemented in ConvertD are: 
-  * ''​Analyze'': ​     Generates three text files for rows columns and matrix 
-  * ''​AnalyzeS'': ​    ​Generates short form of Analyze 
-  * ''​Baron'': ​       Generates Baron input file 
-  * ''​CplexMPS'': ​    ​Generate CPLEX MPS format input file 
-  * ''​Dict'': ​        ​Generate Convert to GAMS Dictionary 
-  * ''​FixedMPS'': ​    ​Generate fixed format MPS file 
-  * ''​Gams'': ​        ​Generate GAMS scalar model. This is the default conversion format used. 
-  * ''​Jacobian'': ​    ​Writes GDX version of current point - Jacobian 
-  * ''​OSiL'': ​        ​Generates Optimization Services instance Language (OSil) file 
-The former Convert option ''​Hessian''​ is now only available in ConvertD and the ''​Jacobian''​ option has additional information. Moreover a few options are exclusively available in ConvertD: 
-  * ''​LocalSolver'': ​ Generate LocalSolver input file 
-  * ''​DictMap'': ​     Generate Convert to GAMS Dictionary Map 
-Moreover, in-core model communication (''​Solvelink=%Solvelink.LoadLibrary%''​) is supported by ConvertD only. 
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IMPRESSUM / LEGAL NOTICEPRIVACY POLICY solver/the_d_solvers_gams_conoptd_gams_convertd_and_gams_cplexd.1610123368.txt.gz ยท Last modified: 2021/01/08 17:29 by Atharv Bhosekar