Intel Gen12 Graphics Bring EU Fusion - EUs Fused In Pairs
Written by Michael Larabel in Intel on 16 July 2020 at 07:01 AM EDT. 12 Comments
INTEL --
While we remain eager to find out more about (and benchmark) Intel Gen12 graphics in Tiger Lake and Xe discrete graphics with this generation bringing the biggest changes to the ISA since i965, Linux patches and bug reports do continue offering new tid-bits of information on Gen12.

One bit that I don't believe has been reported publicly or at least not widely is that starting with Intel Gen12 graphics there is "EU Fusion" or the execution units now being paired for yielding a larger warp size.

A bug report for Mesa this week mentions by one of the Intel open-source developers, "Gen12 EUs are arranged in pairs which execute instructions in lockstep, giving an effective warp size of 64 threads in SIMD32 mode, which seems to increase the likelihood for control flow divergence in some of the affected shaders significantly."

Having a warp size of 64 threads for SIMD32 seems to be causing some unexpected performance/issues within Intel's longstanding open-source driver code albeit the issues are being worked out ahead of launch, hence this newest bug report. In turn going through past Mesa bugs there have been other reports with "EU Fusion" in the context of Gen12.

But that's all for now in terms of new details. As with most hardware launches, when finding Gen12 in Tiger Lake laptops or DG1, you will certainly want to be running the very latest Linux kernel and Mesa for the best possible support. It's looking like in early September is when Intel will reveal more Gen12 / Tiger Lake details.
Related News
About The Author
Author picture

Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

Popular News This Week

çeviri malatya oto kiralama parça eşya taşıma şehirler arası nakliyat şehirlerarası evden eve nakliyat istanbul bursa şehirler arası nakliyat malatya oto kiralama istanbul evden eve nakliyat ofis taşıma ofis taşımacılığı evden eve nakliyat evden eve nakliyat büyü aşk büyüsü ayırma büyüsü medyum medyum şikayetleri medyum yorumları büyü aşk büyüsü bağlama büyüsü dua aşk duası aşk büyüsü büyü aşk büyüsü bağlama büyüsü medyum dolunay medyum aşk büyüsü medyum medyum şikayetleri medyum yorumları metal galvanizli sac paslanmaz sac metal hrp sac paslanmaz çelik mekjoy.com seo seo kursu sex shop istanbul sex shop ataşehir sex shop İstanbul evden eve nakliyat eşya depolama eşya depolama viagra fiyatı cialis fiyat b374k shell