HINT is the only benchmark program to clearly identify anomalies in the performance of supposely identical machines. The above two curves are from two machines with identical hardware, motherboard, memory and cache sizes, operating system and compilers with all the same version numbers (even the purchase date and vendor are the same). But their HINT graphs are so different. Such differences can be easily visualized through HINT curves. This experiment was performed by Dr. Don Heller at Ames Laboratory.