4 ms·

Does anyone have a theory for why Ryzens are beaten so badly by Intel in the Chromium compile benchmark?

• ssutch3 9y ago
  Cross-core communication
  • low_battery 9y ago
    Actually its a problem with Visual studio, Ryzen utterly destroys comptetition when it comes to compilation. Unfortunately Anandtech does not test with GCC or Clang. http://www.phoronix.com/scan.php?page=article&item=ryzen-kabylake-may&num=6 http://www.phoronix.com/scan.php?page=article&item=ryzen-kab...
• low_battery 9y ago
  I think on GCC or Clang Threadripper should be much better (see link on my other reply) And also Arstechnica reported much better numbers, I think Anantech either had a bad config or there is a bug in the compiler they used. https://arstechnica.co.uk/gadgets/2017/08/amd-threadripper-review-1950x-1920x/ https://arstechnica.co.uk/gadgets/2017/08/amd-threadripper-r...
  • gsnedders 9y ago
    The arstechnica numbers surprise me, given the sheer difference between the Ryzen 7 1800X and the Threadripper 1920X compared with the 1920X and the 1950X; either you've reached more or less peak parallelism by 16 cores, or the larger L3 cache and quad-channel memory makes the difference. Or something's changed in the benchmark setup (be it the compiler or whatever) since the 1800X was done.
• 0xcde4c3db 9y ago
  On Twitter, the reviewer blamed it on Ryzen's L3 cache being a victim cache [1] (which I don't really understand; maybe it's related to having ephemeral data structures displace long-lived ones?). I think it's also been stated elsewhere that the Intel chips dominate during linking, which is a large chunk of the overall build time for Chromium. [1] https://twitter.com/IanCutress/status/868799386079420416 https://twitter.com/IanCutress/status/868799386079420416