Running a Model

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When you run a model, you should keep these points in mind:

• Before you run a model, the input data must be available in the solution variable.

• Before running a model that contains a block of simultaneous equations, you might want to check or modify the values of some OLAP DML options that control the solution of simultaneous blocks. These options are described briefly in Table: Model Options.

• When your model contains any dimension-based equations, then you must provide a numeric solution variable that serves both as a source of data and as the assignment target for equation results. The solution variable is usually dimensioned by all of the dimensions on which model equations are based and also by the other dimensions of the solution variable on which you are not basing equations.

• When you run a model, a loop is performed automatically over the values in the current status list of each of the dimensions of the solution variable on which you have not based equations.

• When a model equation bases its calculations on data from previous time periods, then the solution variable must contain data for these previous periods. When it does not, or when the first value of the dimension of type DAY, WEEK, MONTH, QUARTER, or YEAR is in status, then the results of the calculation are NA.