An interesting idea to ponder, but this isn't a feature present in Skylake or any other processor Intel has announced. The German language source cited in this link retracted their guess a few days later: http://www.heise.de/newsticker/meldung/IDF-2015-Intel-enthue...
"Inverses Hyper-Threading, wie hier aufgrund von merkwürdigen Messergebnissen spekuliert wurde, unterstützt der Skylake indes nicht."
"Inverse Hyper-Threading, as was speculated here due to strange measurement results, is not supported by Skylake."
Here's some English language reporting about the retraction:
"However, Intel has dismissed rumors of Inverse Hyper Threading being present on the Skylake die, something that we talked previously as being a cutting edge methodology of single-thread computing boosting via multi-core help. We expected an answer on this matter at IDF and Intel unfortunately dismisses it as being false. Recent studies made by Heise.de showed incredible single-thread computing performance by the new Core i7-6700K and speculated that Inverse Hyper Threading might be present on the new Skylakes. Apparently, it was not."
Yes I remember the heise reports as well and it was super speculative back then. BTW, your English translation is good. May I ask if that is just with high school German class or have you been to Germany?
I'm American and took a year of German in college, but I cheated here. I scanned the page to find the right sentence, and then copy-and-pasted it into Google Translate. Then I fixed up the English to sound better while trying to stay faithful to the phrasing in German. Without Google's starting point, I'd have been guessing a lot, and probably wouldn't have shared a translation.
AMD did do something like this with their Bulldozer architecture - it had a pair of SIMD dispatch units per pair of processor cores, which could either be split between the cores or used by one of the cores depending on the workload. The public and media perception was that they were lying about the number of cores in the CPUs by doing this, and I believe they're dropping it for the next CPU generation.
"Inverses Hyper-Threading, wie hier aufgrund von merkwürdigen Messergebnissen spekuliert wurde, unterstützt der Skylake indes nicht."
"Inverse Hyper-Threading, as was speculated here due to strange measurement results, is not supported by Skylake."
Here's some English language reporting about the retraction:
"However, Intel has dismissed rumors of Inverse Hyper Threading being present on the Skylake die, something that we talked previously as being a cutting edge methodology of single-thread computing boosting via multi-core help. We expected an answer on this matter at IDF and Intel unfortunately dismisses it as being false. Recent studies made by Heise.de showed incredible single-thread computing performance by the new Core i7-6700K and speculated that Inverse Hyper Threading might be present on the new Skylakes. Apparently, it was not."
http://news.softpedia.com/news/intel-reveals-the-skylake-inn...