[Rumor] Skylake can virtualise the entire CPU to act as a single thread, 'inverse Hyper Threading’!? 2.4 times faster..

[TrigrH]

2.4 times faster.... for a single threaded operation.

 

The German website Heise reports that Skylake CPUs might have a special feature to boost single-thread performance, the site calls it reverse Hyper Threading. The feature pretty much combines several physical cores into a single ‘Super Core’. In other words, the feature combines features and performance of multiple physical cores into a single virtual core. - MyCE
 

Could this mean the future Skylake-E with chips with 6+ cores could have noticeable gains in all tasks, not just multi-threaded ones?

 

Points
 

< -------------------------------------- Physical cores -------------------------------------- > < -----------------------------Logical cores ---------------------------------- >

 

The chart above shows a 2.4 times boost with a single thread operation, the more threads in use, the lower the performance gains.

 

WCCF believes:

I suspect, part of Intel’s “Global Shortage” has something to do with the fact that they have yet to reveal the biggest selling point of the Skylake processor to the consumers. Which go a long way in exponentially increasing demand.

Read more: http://wccftech.com/intel-inverse-hyper-threading-skylake/#ixzz3j31D8eCf

 

Think about how long since they changed the box art this much? Surely skylake has something special?

 

Source (german):
http://www.heise.de/newsticker/meldung/Skylake-mit-inversem-Hyper-Threading-2779793.html

 

Google translation of source:

"Strange readings with Benchmarks SPEC CPU2006 suite of cause for speculation.

For measurements in the c't laboratory showed a particular application of the SPEC CPU2006-Suite, which comes from the field of Computational Fluid Dynamics (470.lbm) a very unusual behavior. In operation with a single thread (Single Thread, without Autoparallelisierung) she ran on the processor Core i7-6700K Skylake by factor 2.4 faster than on the predecessor Core i7-4790K Haswell. However, this projection broke with simultaneous operation of multiple cores in rapidly together, amounted to four physical cores in normal sizes of perhaps 20 percent. This could draw the conclusion that in certain cases a second core with its functional units, caches or TLBs is the first core to the side. So a technique certainly had the Startup softmachines presented at the Linley Processor Conferenz almost a year ago .
 
But that seems to work only with pure single-threaded operation and in certain load situations. On two (physical) cores of benchmark runs noticeably faster than on a.The normal Hyper-Threading helps in this benchmark way, not so much, resulting in both processors to slow down. Intel will introduce the Skylake architecture until Tuesday of next week at IDF in San Francisco. ( AS )"

[Curufinwe_wins]

snip

BTW see that dip at 5 logical threads. That's what I keep mentioning about hyper-threading sucking massive resources. Obviously some actually scale positive but not all do.

 

That is odd btw. The top graph pattern is actually what I would expect out of all cpu's.

[Trik'Stari]

RIP AMD

[Bob Jim]

Also if this is the case does this mean that single threaded games would see a performance boost? I am actually debating the I5 4690k vs i5 6600k right now.

Edited August 17, 2015 by colonel_mortis

[SurvivorNVL]

Okay.. maybe I'll upgrade to Skylake mainstream until E comes out.  That.. has my attention.

[Curufinwe_wins]

Done. Also if this is the case does this mean that single threaded games would see a performance boost? I am actually debating the I5 4690k vs i5 6600k right now.

 

In theory, yea. I mean I don't know that it is real, but you can set custom turbo boosts for one/two/three cores. I heard from someone yesterday on the forum that said they were pulling a 1 core 5960x turbo up to 5.7 Ghz.

 

You could try all of these separately, but it's harder to confirm stability to be honest.

[CommandMan7]

If this is true my Case + Mobo + RAM (for current system) upgrade will have to wait cause I'll be first in line. There's an entire generation of DX9 games I like that run like shit because the devs anticipated faster single cores, but it never happened. 

 

All aboard hype train.

 

 

[AxelRantila]

If this is true, then it is really awesome. Not sure if it's worth upgrading from a 4790k, but it's awesome nonetheless

[AlwaysFSX]

Heeeeeeeey, this would be perfect for FSX.

[SurvivorNVL]

Heeeeeeeey, this would be perfect for FSX.

This would be the best.  Especially if the Skylake-E xx30k is an 8-core.  

[AlwaysFSX]

This would be the best.  Especially if the Skylake-E xx30k is an 8-core.  

I'd love 16 threads of amazing power to run it. :'D

[SurvivorNVL]

I'd love 16 threads of amazing power to run it. :'D

I don't expect sixteen threads to become a single thread, but if four threads can become one at a time--it'd be seriously amazing.  

[TrigrH]

I don't expect sixteen threads to become a single thread, but if four threads can become one at a time--it'd be seriously amazing.  

I don't see why it cant? I would expect diminishing returns the more cores you have though.

[Mew]

I highly doubt this because that's the opposite of what Intel seeks to do. If AMD or Qualcomm came out with this tech, then I would believe it because they both have very weak IPC. 

[Deletive]

I don't think Intel would bother putting this in a consumer line up if this is made for xeon stuff but even in the server space this is the opposite of what they want to achieve, so much more can be done with virtual machines that make much better use of resources. 

[TroubleKlef]

Very cool. These are the types of things people wait out for.

[Snadzies]

Sounds interesting.

 

There are programs that do much better with a single thread that multiple threads (like many games) because they need things to happen in a specific order and it can be very challenging to break the data apart that need to be calculated and then sync the finished calculations back up in the right order and send it along.

 

There seems to be a wall engineers are running into as far as per clock calculations are concerned and this could be a pretty neat way to help with speeding up some programs.

[That Norwegian Guy]

A 50% increase from a quadrupling of available power to a thread?

 

So in other words, it's some form of non-native/ emulation cajiggering.

[jaggysnake57]

mmmm it seams that, though some games and software do, most games and software dont utilise multiple threads efficiently and show little signs of moving that way any time soon.  how many times have we told new builders not to bother with the i7 becasue it OP for gaming and surfing, etc. IF intel are heading this way then i see no problem with it and i can see why they would be....

Edited August 17, 2015 by colonel_mortis
Removed backseat moderating

[spartaman64]

this somewhat came at a bad time with directx 12 able to use more than 2 cpu threads

[TrigrH]

this somewhat came at a bad time with directx 12 able to use more than 2 cpu threads

 

There's an entire generation of DX9 games I like that run like shit because the devs anticipated faster single cores, but it never happened. 

 

CommandMan7 answers that one quite nicely

[C3DMaX]

my skyrim installation almost ordered a skylake cpu by itself

[spartaman64]

CommandMan7 answers that one quite nicely

sure this could benefit people who get low fps on games they currently own but i would guess most people check whether they can run the game properly before they buy it. so new hardware matters more for new games that will become more demanding and if those games already use most of the cpu threads this wont help especially since it doesnt seem to scale linearly 

[deviant88]

Its useless because there is no OS or program for the desktop/workstation environment that uses 1 thread.

Any program you have needs more threads for audio/graphics etc, if you run all on a single thread it will get much slower than 2.4x the gain in skylake.

[Kukielka]

Its useless because there is no OS or program for the desktop/workstation environment that uses 1 thread.

Any program you have needs more threads for audio/graphics etc, if you run all on a single thread it will get much slower than 2.4x the gain in skylake.

Java.