Although there are still puzzles from the tests so far, with the attached J55 I've added another dimension to the tests. J54 and earlier have been doing full Mebisample chirping as needed before doing Gaussian, Pulse, and Triplet finding. For cases where that's not needed, AK_v8 becomes more cache friendly by subdividing. So I modified all the chirp functions to support that, and J55 does testing at 128K and 32K in addition. The timings ought to be about 1/8 and 1/32 of the full length tests.I do appreciate the testing, and am glad the Ivy Bridge system reacted like other Intel CPUs. Whatever form of dispatch is eventually used, keeping the number of code paths low will be more efficient. Joe