Cloud execution results. Shown are results from two ISL experiments using 49, 70, 84, and 152 lobules executed in Amazon's EC2 cloud infrastructure. The values plotted are the same type as in Fig. 4. The gold zone is identical to the blue zone in Fig. 4. As in Fig. 4, in A-D we see evidence a long period oscillation in the diltiazem outflow profiles. Again, however, the more samples per experiment, the less pronounced the periodicity and the better-behaved the finite differences profiles became: the smoothness of the diltiazem profile increases with the number of samples. More slave nodes could be instantiated to execute more samples per ISL in the cloud. Twenty nodes, one master and 19 slaves, were used to generate the 152-sample ISL simulations.