Xpress Mosel
In Mosel a problem will be passed to the Xpress Optimizer when you call the minimize or maximize procedures. It is always recommended to have the Xpress Optimizer write the problem it holds in memory directly to file, instead of using Mosel's own exportprob procedure. To do so, you first tell Mosel to load the problem into the Xpress Optimizer, and then to write it out. Assuming your objective function in the model is called myObjective, you should insert the following two lines just before any call to minimize/maximize:
loadprob(myObjective)
writeprob("myproblem", "")This will create a file named myproblem.mps.
It is also possible to create the saved state file from within Mosel; just replace the call to writeprob with a call to savestate, as in:
loadprob(ObjectiveFunction)
savestate("myproblem.svf")Make sure to include the .svf extension in the name, since this is expected by the Xpress Optimizer.
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