Since you're whitelisting based on vendor (?), no. Testing one uarch shouldn't give you any more that another uarch works than that a Transmeta chip works. And within one uarch, how exactly are you testing? I suspect the answer is technically yes, but only in a meaningless way.
For a conventional branch predictor on a semi-modern (P6+ era) out of order processor, it would be pretty surprising to have the critical path run through the branch predictor. Ofc. a metal fix for could change this as could an unconventional design, as well as other things.
-
-
Maybe you get "lucky" with some chip and there's some extreme manufacturing variation that causes this failure mode, maybe the wafer was bad in some particular way, etc.
-
testing a set of chips from one uarch form one vendor and having it pass some particular overclocked test (where passing means not corrupting the EIP while not crashing?) tells you as much about another uarch from the same vendor as it does about a chip from another vendor.
- 23 more replies
New conversation -
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.
