The results are displayed in table 2 and figure 2. 333MHz Cluster of 8 machines connected via 100Mbps LAN Table 2, SUN Cluster results. When we look at the results, we see that the SGI system is much faster. In order to compare the results we must use relative scores, see table 3. In figures see figure 3.
Clusters are very efficient.
We see that the communication between clusters doesn't have to cause an decrease in performance. As we can see the relative scores of the SUN cluster is equal to the shared memory system. Other parallel computing programs might not show equal relative scores due to lower efficiencies. Basically what we've learned is that in parallel-computing programs the communication takes usually only very little time and therefore the extra overhead in a cluster compared to a shared memory systems is almost nothing.