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AMD's Working With Microsoft to Address Threadripper 2 Scheduler Issues

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rjohnson11
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2019/01/19 04:10:22 (permalink)
https://www.overclock3d.net/news/cpu_mainboard/amd_s_working_with_microsoft_to_address_threadripper_2_scheduler_issues/1?fbclid=IwAR2N1rMHALBmx1-GcF5KuNCDFxPW75J_C8t2FV5sOs71zj8cAxnGrmUaQkc
 
Almost two weeks ago, Wendell from Level1Techs revealed that a problem lied within the Windows Kernel which prevents AMD's 4-die Threadripper and EPYC (in some cases) processors from reaching their fullest potential within Windows. This put to bed rumours which alleged that AMD's 24-core and 32-core Ryzen Threadripper processors are memory limited, with 3rd party fixes being able to increase the performance of AMD's latest processors by as much as 50% in impacted workloads. 

Wendell's research eventually led to the release of a new version of CorePrio, where a new option called "NUMA Dissociater" was able to significantly increase the performance of AMD's 24-core and 32-core (4-die) processors in benchmarks like Indigo and 7zip. In the case of 7zip, a performance gain of 70% was possible. 

AMD has since stated to Anandtech that the company is now working with Microsoft to address the issue, commenting that Wendel was "very close" to what the problem is.

Specs: AMD 2920X Threadripper, Corsair MP510 M.2, 128GB Corsair RGB Vengeance Pro,  ASRock X399 Taichi, Corsair 1000D, EVGA RTX 2070




#1

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    MadmanRB
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    Re: AMD's Working With Microsoft to Address Threadripper 2 Scheduler Issues 2019/01/19 12:33:22 (permalink)
    Yeah windows and threadripper dont really play nice right now, linux gets along okay though :D
    #2
    Ravenmaster
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    Re: AMD's Working With Microsoft to Address Threadripper 2 Scheduler Issues 2019/01/21 17:41:53 (permalink)
    Had the same motherboard as you rjohnson11 (Asrock X399 Taichi) along with a Threadripper 2920X. Using that processor and that motherboard, i was experiencing massive DPC latency which caused audio over my speakers to snap/crackle/pop and my RTX 2080 Ti to microstutter while gaming. Eventually i RMA'd both the motherboard and the CPU and got rid of them. I'm now using the same sound card and speakers and the same graphics card with an Intel i7 9800X and an EVGA X299 Dark motherboard. The snap/crackle/pop is gone and my games no longer have microstutter. Although Ryzen CPU's are cheaper than their Intel counterparts, AMD CPU's just don't seem have the stability that Intel's processors have. And they run HOT in comparison. Oh and FYI, i also used the same Corsair H115i platinum water cooler on both those CPU's. The Intel one runs at 37 degrees idle and 50 degrees average under full load. The TR 2920X ran at 55-60 degrees idle and 85 degrees average under load. I won't be going team red again anytime soon.
    post edited by Ravenmaster - 2019/01/21 17:45:50

    EVGA X299 Dark  mobo | Core i7 9800X | 1x RTX 2080 Ti FE  | 1x EVGA GTX 1060 6GB (dedicated to PhyX | 64GB DDR4 RAM Ballistix Sport | Pioneer 4K Blu Ray Player | 2x Intel 760p 2TB M.2 SSD's in bootable RAID 0 (VROC) for OS | 2x Samsung 850 EVO 1TB SSD's (for backup) | Creative SB ZXR | Logitech Z-906 5.1 speakers | Asus ROG wift 27" 144hz G-sync monitor @ 1440p 

    #3
    MadmanRB
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    Re: AMD's Working With Microsoft to Address Threadripper 2 Scheduler Issues 2019/01/21 19:24:56 (permalink)
    Ravenmaster
    Had the same motherboard as you rjohnson11 (Asrock X399 Taichi) along with a Threadripper 2920X. Using that processor and that motherboard, i was experiencing massive DPC latency which caused audio over my speakers to snap/crackle/pop and my RTX 2080 Ti to microstutter while gaming. Eventually i RMA'd both the motherboard and the CPU and got rid of them. I'm now using the same sound card and speakers and the same graphics card with an Intel i7 9800X and an EVGA X299 Dark motherboard. The snap/crackle/pop is gone and my games no longer have microstutter. Although Ryzen CPU's are cheaper than their Intel counterparts, AMD CPU's just don't seem have the stability that Intel's processors have. And they run HOT in comparison. Oh and FYI, i also used the same Corsair H115i platinum water cooler on both those CPU's. The Intel one runs at 37 degrees idle and 50 degrees average under full load. The TR 2920X ran at 55-60 degrees idle and 85 degrees average under load. I won't be going team red again anytime soon.


    Because intel always makes chips that are flawless, I mean its not like there are these two major security bugs that need to be patched up.
    Spectre and meltdown, never heard of em!
    Yup its not like Intel has ever made mistakes either, I mean people having issues with intel processors never happen... look how many people didnt have issues in 2011 with intels graphics problems.... never happened!
    Yup Intel never makes mistakes or has flaws, in fact they are so perfect i want to sing about it!
     
    https://www.youtube.com/watch?v=SVi3-PrQ0pY
     
    #4
    ty_ger07
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    Re: AMD's Working With Microsoft to Address Threadripper 2 Scheduler Issues 2019/01/21 20:04:24 (permalink)
    MadmanRB
    Ravenmaster
    Had the same motherboard as you rjohnson11 (Asrock X399 Taichi) along with a Threadripper 2920X. Using that processor and that motherboard, i was experiencing massive DPC latency which caused audio over my speakers to snap/crackle/pop and my RTX 2080 Ti to microstutter while gaming. Eventually i RMA'd both the motherboard and the CPU and got rid of them. I'm now using the same sound card and speakers and the same graphics card with an Intel i7 9800X and an EVGA X299 Dark motherboard. The snap/crackle/pop is gone and my games no longer have microstutter. Although Ryzen CPU's are cheaper than their Intel counterparts, AMD CPU's just don't seem have the stability that Intel's processors have. And they run HOT in comparison. Oh and FYI, i also used the same Corsair H115i platinum water cooler on both those CPU's. The Intel one runs at 37 degrees idle and 50 degrees average under full load. The TR 2920X ran at 55-60 degrees idle and 85 degrees average under load. I won't be going team red again anytime soon.


    Because intel always makes chips that are flawless, I mean its not like there are these two major security bugs that need to be patched up.
    Spectre and meltdown, never heard of em!
    Yup its not like Intel has ever made mistakes either, I mean people having issues with intel processors never happen... look how many people didnt have issues in 2011 with intels graphics problems.... never happened!
    Yup Intel never makes mistakes or has flaws, in fact they are so perfect i want to sing about it!
     
    https://www.youtube.com/watch?v=SVi3-PrQ0pY
     

    Even more, this issue Microsoft is fixing, is an issue caused by Microsoft patching in an optimisation for an Intel Xeon processor which would have otherwise performed poorly. So, it is really hard to blame AMD for a patch Microsoft made to fix Intel Xeon performance which caused AMD's CPU to perform poorly.
    post edited by ty_ger07 - 2019/01/22 05:04:30
    #5
    09973
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    Re: AMD's Working With Microsoft to Address Threadripper 2 Scheduler Issues 2019/01/22 01:43:20 (permalink)
    Agreed with ty_ger07. Can not really blame AMD for Windows not playing nice.

    As long as your popular enough, you can get away with anything.
    #6
    rjohnson11
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    Re: AMD's Working With Microsoft to Address Threadripper 2 Scheduler Issues 2019/01/22 02:15:34 (permalink)
    Ravenmaster
    Had the same motherboard as you rjohnson11 (Asrock X399 Taichi) along with a Threadripper 2920X. Using that processor and that motherboard, i was experiencing massive DPC latency which caused audio over my speakers to snap/crackle/pop and my RTX 2080 Ti to microstutter while gaming. Eventually i RMA'd both the motherboard and the CPU and got rid of them. I'm now using the same sound card and speakers and the same graphics card with an Intel i7 9800X and an EVGA X299 Dark motherboard. The snap/crackle/pop is gone and my games no longer have microstutter. Although Ryzen CPU's are cheaper than their Intel counterparts, AMD CPU's just don't seem have the stability that Intel's processors have. And they run HOT in comparison. Oh and FYI, i also used the same Corsair H115i platinum water cooler on both those CPU's. The Intel one runs at 37 degrees idle and 50 degrees average under full load. The TR 2920X ran at 55-60 degrees idle and 85 degrees average under load. I won't be going team red again anytime soon.


    No issues here with audio. I have a 1920X and temps were fine. 

    Specs: AMD 2920X Threadripper, Corsair MP510 M.2, 128GB Corsair RGB Vengeance Pro,  ASRock X399 Taichi, Corsair 1000D, EVGA RTX 2070




    #7
    rjohnson11
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    Re: AMD's Working With Microsoft to Address Threadripper 2 Scheduler Issues 2019/01/22 02:24:54 (permalink)
    Ravenmaster
    Had the same motherboard as you rjohnson11 (Asrock X399 Taichi) along with a Threadripper 2920X. Using that processor and that motherboard, i was experiencing massive DPC latency which caused audio over my speakers to snap/crackle/pop and my RTX 2080 Ti to microstutter while gaming. Eventually i RMA'd both the motherboard and the CPU and got rid of them. I'm now using the same sound card and speakers and the same graphics card with an Intel i7 9800X and an EVGA X299 Dark motherboard. The snap/crackle/pop is gone and my games no longer have microstutter. Although Ryzen CPU's are cheaper than their Intel counterparts, AMD CPU's just don't seem have the stability that Intel's processors have. And they run HOT in comparison. Oh and FYI, i also used the same Corsair H115i platinum water cooler on both those CPU's. The Intel one runs at 37 degrees idle and 50 degrees average under full load. The TR 2920X ran at 55-60 degrees idle and 85 degrees average under load. I won't be going team red again anytime soon.


    I'd also like to know when you experienced the DPC latency. During which specific game or app? Now I don't have speakers I use Corsair headphones. 

    Specs: AMD 2920X Threadripper, Corsair MP510 M.2, 128GB Corsair RGB Vengeance Pro,  ASRock X399 Taichi, Corsair 1000D, EVGA RTX 2070




    #8
    transdogmifier
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    Re: AMD's Working With Microsoft to Address Threadripper 2 Scheduler Issues 2019/01/22 05:18:59 (permalink)
    Ravenmaster
    Had the same motherboard as you rjohnson11 (Asrock X399 Taichi) along with a Threadripper 2920X. Using that processor and that motherboard, i was experiencing massive DPC latency which caused audio over my speakers to snap/crackle/pop and my RTX 2080 Ti to microstutter while gaming. Eventually i RMA'd both the motherboard and the CPU and got rid of them. I'm now using the same sound card and speakers and the same graphics card with an Intel i7 9800X and an EVGA X299 Dark motherboard. The snap/crackle/pop is gone and my games no longer have microstutter. Although Ryzen CPU's are cheaper than their Intel counterparts, AMD CPU's just don't seem have the stability that Intel's processors have. And they run HOT in comparison. Oh and FYI, i also used the same Corsair H115i platinum water cooler on both those CPU's. The Intel one runs at 37 degrees idle and 50 degrees average under full load. The TR 2920X ran at 55-60 degrees idle and 85 degrees average under load. I won't be going team red again anytime soon.




     
    Gonna have to agree with others here (and I'm an Intel guy, for the most part)...this isn't AMD's problem if you were to be honest...it's a Microsoft issue....
     
    it's getting fixed...eventually...although it does suck in the interim...wait for the fix (and the correct fix)...then make a choice.
     

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    #9
    MadmanRB
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    Re: AMD's Working With Microsoft to Address Threadripper 2 Scheduler Issues 2019/01/22 08:02:14 (permalink)
    transdogmifier
    Gonna have to agree with others here (and I'm an Intel guy, for the most part)...this isn't AMD's problem if you were to be honest...it's a Microsoft issue....
     
    it's getting fixed...eventually...although it does suck in the interim...wait for the fix (and the correct fix)...then make a choice.



    Well another thing to keep in mind that intel has had a near monopoly on the desktop for the last decade or so, and most of the code out there is for intel processors.
    But even intel has had its hiccups, i remember when skylake first came out things were a bit of a mess.
    Zen is essentially AMD's answer to skylake so yeah its going to have a few bugs and hiccups.
    But I imagine Zen 2 will be the real time for AMD to shine, I mean for all the hiccups AMD has they may yet get get good marketshare and make the desktop processor battleground more even
    #10
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