Benchmarking Amazon's ARM Graviton CPU With EC2's A1 Instances

Monday night Amazon announced the new "A1" instance type for the Elastic Compute Cloud (EC2) that is powered by their own "Graviton" ARMv8 processors. Since then I have been running benchmarks on Amazon's first-generation 64-bit ARM processors and seeing how these ARM cloud instances compare to their Intel Xeon and AMD EPYC performance on EC2 in both raw performance as well as performance-per-dollar.