Presently, the glycolytic oscillations in yeast are not believed to fulfill any purpose. So you might be asking your self why modelling them is important.
ATP and ADP are key metabolites in all cell types. Therefore, oscillations in the ATP/ADP ratio, generated by the glycolysis, could very well influence physiologically important phenomena in more complex organisms, where glycolytic oscillations are also known. At the moment, this mechanism is called upon to solve problems concerning the oscillatory insulin secretion from beta-cells and the regulation of blood flow by vascular smooth muscle.