[Cbc] Pass model and/or data to the executable via standard input

[Pietro Scionti]

Hi,
i am learning CBC in order to transition to it from GLPK.
Since I cannot lose GMPL's capabilities but for various reasons I am constrained to use the unmodified executable, my modus operandi is
1) run GLPK with the "--wlp model.lp --check" option to make the mod-> lp transition
2) run cbc solving the .lp model
I would like to know, is there a way to pass the model to be solved via the console standard input? My models (all integer) get pretty big pretty fast, and I am concerned I might use a huge amount of disk space that I then need to clean up, while this could all be avoided if I could feed the model to cbc in memory.

If i was not clear, what I want to accomplish in GLPK can be done like this (language is C#, i am on Windows 7):

            System.Diagnostics.Process process = new System.Diagnostics.Process();
            process.StartInfo.UseShellExecute = false;
            process.StartInfo.FileName = glpsolPath;
            process.StartInfo.Arguments = String.Format("--math /dev/stdin --output {0} --log {1}", outputStreamPath, logPath);
            process.StartInfo.RedirectStandardInput = true;
            process.Start();
            StreamReader tr = new StreamReader(modelPath);
            process.StandardInput.Write(tr.ReadToEnd());


Thanks everyone,
Pietro Scionti

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