When using IPP, I had to rewrite the CPU detector, even for new Intel chips as they came out. This code should be better...really it should just benchmark all t

When using IPP, I had to rewrite the CPU detector, even for new Intel chips as they came out. This code should be better...really it should just benchmark all the options and catch processor exceptions to pick a supported path. Instead, the idea is to do a static dispatch for 'known' chips, which is really bad. When the Core2Duo came out, the version of IPP we used reverted to basic MMX code instead of SSE2, about 2.5x slower. This is just bad code, and it's bad on Intel chips, not just AMD. Also there is the "optimized for benchmarking" piece. It's not always good to use all your cores for one job, for instance, but a lot of these libraries make the assumption that your CPU has nothing else to do.