When I run my model there seems to be a long delay between the matrix generator and the reports; how can I tell if everything is all right so that I dont panic and stop the computer?
Predicting the amount of time it might take to optimize a given model is difficult; the time is a function of many things. Model size is an important factor and so is machine speed, but so are certain intangibles such as the size of the feasible space and how discriminating the coefficients are. If I have solved a model, changed some of the coefficients and resolved it, I would expect it to take approximately the same amount of time, but it might take a much longer time or a much shorter time. Since the optimization is an iterative procedure, we don’t know what path it will take or how many iterations it might require. During the optimization process, you may request the display of optimization log-lines on your screen. You can set the communication region variable XFREQLOG to n so that the log-lines appear every n simplex iterations. Two different messages are used. Before C-WHIZ has found the feasible space the message is: nnnnn ITERATIONS XFUNCT= xxxxx.xxxxx XNIF= iiiii XSIF= yyyyy.
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