Jump to content


Photo

2016+ CPU/GPU News

amd nvidia intel cpu gpu zen pascal kaby lake skylake vega

  • Please log in to reply
211 replies to this topic

#201 MoroseTroll

MoroseTroll

    Member

  • Member
  • PipPip
  • 292 posts

Posted 28 August 2017 - 12:10 PM

I suppose, the "dmap" function is barely multi-threaded and/or doesn't use SIMD at all. The results I was talking about earlier ("AMD Zen works usually faster with 128-bit SIMD than any Intel CPU") I've got by entering the "testSIMD" console instruction.



#202 Bikerdude

Bikerdude

    Mod hero

  • Member
  • PipPipPipPipPip
  • 18643 posts

Posted 28 August 2017 - 12:22 PM

I've got by entering the "testSIMD" console instruction.

ok, for curiosities sake how do I do a usefull test on both systems?



#203 MoroseTroll

MoroseTroll

    Member

  • Member
  • PipPip
  • 292 posts

Posted 28 August 2017 - 01:20 PM

Before I've started my work on SIMD optimizations, I did usually use vanilla Doom 3 (not sure about the BFG edition) for such an experiments: run the game, enter the console menu and type the instruction. But later, I compiled a standalone console executable that does almost the same. In case you run the last one, it would be nice to redirect its output to a text file, like "TestAll > Results.txt". But be careful: my test only run my SIMD code on AMD CPUs (on any of them, but not earlier Athlon, i.e. no K6 & K5 :)), so if you run it on Intel (or VIA :)), it'll run the old (not my) code, i.e. you'll see no difference.



#204 Bikerdude

Bikerdude

    Mod hero

  • Member
  • PipPipPipPipPip
  • 18643 posts

Posted 28 August 2017 - 03:31 PM

Ive downloaded the little file, whats flags do I use to get a result that I can upload as a file?



#205 MoroseTroll

MoroseTroll

    Member

  • Member
  • PipPip
  • 292 posts

Posted 29 August 2017 - 04:00 AM

What do you mean by saying "flags?" My method is simple:

 

1. Download "TestAll.7z" and unpack it somewhere.

2. Run "TestAll.exe > Results.txt".

3. Open "Results.txt" in Notepad or any other text viewer/editor and compare the results.

 

The executable has no flags at all. It's just a standalone version of the "TestSIMD" console instruction from Doom 3.

 

BTW, 7-Zip has been updated to 17.01 yesterday. Also, please don't forget to toggle on the "Use large pages" option in it, because this improves overall performance :).


Edited by MoroseTroll, 29 August 2017 - 06:34 AM.


#206 Bikerdude

Bikerdude

    Mod hero

  • Member
  • PipPipPipPipPip
  • 18643 posts

Posted 29 August 2017 - 04:56 AM

ah ok, I didn't realize it auto generated the txt file.



#207 MoroseTroll

MoroseTroll

    Member

  • Member
  • PipPip
  • 292 posts

Posted 29 August 2017 - 06:39 AM

Um... Actually, its output is directed to console (DOS/*nix style), so the best way to anylize the results is to redirect them to a text file.



#208 Bikerdude

Bikerdude

    Mod hero

  • Member
  • PipPipPipPipPip
  • 18643 posts

Posted 30 August 2017 - 12:49 PM

1. Download "TestAll.7z" and unpack it somewhere.

2. Run "TestAll.exe > Results.txt".

3. Open "Results.txt" in Notepad or any other text viewer/editor and compare the results.

done, see attached.

 

Attached File  Results.txt   101.44KB   4 downloads


  • MoroseTroll likes this

#209 Bikerdude

Bikerdude

    Mod hero

  • Member
  • PipPipPipPipPip
  • 18643 posts

Posted 30 August 2017 - 04:17 PM

Due to the various issues and immaturity of the bios/drivers its going back for a refund. If anyone wants me to do any further tests they had better be quick, I will be raising the return with amazon on Friday.


Edited by Bikerdude, 30 August 2017 - 04:17 PM.


#210 MoroseTroll

MoroseTroll

    Member

  • Member
  • PipPip
  • 292 posts

Posted 31 August 2017 - 01:43 AM

I think there will be no adequate BIOS/UEFI & driver support for Win 7 on Ryzen - we all know why.


Edited by MoroseTroll, 31 August 2017 - 01:45 AM.

  • Bikerdude likes this

#211 jaxa

jaxa

    Advanced Member

  • Member
  • PipPipPip
  • 1235 posts

Posted 31 August 2017 - 10:46 AM

Intel Xeon-W

http://www.anandtech...or-workstations

 

MediaTek Helio P23 and P30

http://www.anandtech...0-midrange-socs

 

AMD Threadripper 1900X

http://www.anandtech...-ryzen-pro-cpus



#212 Bikerdude

Bikerdude

    Mod hero

  • Member
  • PipPipPipPipPip
  • 18643 posts

Posted 02 September 2017 - 02:29 AM

Final opinion from the 6850k/x99 & 1600x/X370 -

 

Intel - 6850k/X99 (total cost £600):

 

Pros

  • Multi CPU perf noticeably better.
  • Motherboard beefier across the board -
    • 40 PCIe lanes on the 6850 compared to 16 on the 4790.
    • More PCIe expansion slots.
    • More ram slots (8 versus 4)

Cons

  • Cold boot times significantly slower than my 4790k/Z97, 45s to desktop compared to 20s.
  • Even overclocking the 6850k to 4.2Ghz, single thread perf not quite as fast as the 4790k @4.4ghz - so dmapping a tad slower.

Amd - 1600x/X370 (total cost £400):

 

Pros

  • Multi CPU perf significantly better, way better than the 6850k (both CPU's were 6 core)
  • Motherboard better in some respects -
    • 24 PCIe lanes versus 16 on the 4790.
    • USB 3.1

Cons

  • Cold boot times significantly slower than my 4790k/Z97, 35s to desktop compared to 20s.
  • AMD chipset drivers immature - getting weird incompatibility issues - but that to be expected seeing as the platform is only 6 months old
  • Weird warm and cold boot issues -
    • on cold the system would do a double boot, some info online suggest this is normal and its the mobo checking the ram - either way I am NOT putting up with that (cold to desktop is well over a minute in that scenario).
    • Warm rebooting, randomly windows 7 would sit on the logo screen for waaaaay too long p - At a guess chipset drivers.
    • Shutting down sometimes it would a bit long - At a guess chipset drivers.
  • Single thread perf @ 4.0Ghz noticeably slower than the 4790k @4.4ghz - so dmapping on my city map took over a minute longer

I will not be shoehorned into upgrading to Win8/10, all of the issues with boot times on both system would have probably been alleviated with the aforementioned OS's. And the weird cold/warm boot issues on the Ryzen setup would most likely not have even come up.

 

For this you want the best perf and 100% Win7 compatibility, you can still buy 4790k on newegg ($391, 3 year warranty), or if you want to save some cash CEX ($250, 2 year warranty)







Also tagged with one or more of these keywords: amd, nvidia, intel, cpu, gpu, zen, pascal, kaby lake, skylake, vega

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users