Validation is done on all CPU'sCPUs from the target set and very often on other CPU'sCPUs and OS'sOSs ([[Windows XP]], [[Windows Vista]], [[Windows 7]] etc.) as well. Validation is done across many different function inputs, both normal usage cases and error usage cases. Validation is done against known correct values and against reference implementations such existing RTL functions.
=== Benchmarking ===
Benchmarking is done on all the CPU'sCPUs that are part of the current target set at the given time. These CPU'sCPUs have been or are part of target sets: ([[Intel Pentium 3]], [[Intel Pentium M]], [[Intel Pentium 4]], [[Intel Core]], [[Intel Core2]], [[AMD Athlon XP]], [[AMD Opteron]], [[AMD Phenom]]).
Great care has been taken to make the benchmarks stable and realistic. Especially the memory manager challenge benchmark was hard to get fair and memory manager usage logs were made from normal usage of real world applications, and then played back by the benchmark.