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Vulkan vs. OpenGL On Linux With Core i5, Core i7, Ryzen 7

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  • Sin2x
    replied
    I believe this needs to be retested with GCC 7. GCC 6 is not optimized for Zen according to Gentoo wiki: https://wiki.gentoo.org/wiki/Ryzen#GCC_6.3.2B

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  • dungeon
    replied
    Originally posted by mulenmar View Post

    I think I trust the libreboot developers and Raptor Computing Systems (of the failed POWER8 machine crowdfunding campaign) over some random, uncited Wikipedia article. I'll do some further looking, though, and be quite annoyed if it turns out to be true...assuming those Kabini APUs aren't throttled like the FX-8800p was everywhere.

    EDIT: Well, shit. It's still present, but not enabled. Wish I'd known that before I bought that laptop with the throttled-to-15W FX-8800p.
    Ah that is wrong info there on libreboot site

    ... The Platform Security Processor (PSP) is built in on all Family 16h + systems (basically anything post-2013), and controls the main x86 core startup...
    Nope it is not on all 16h+, as i said 16h Jaguar does not have PSP, but 16h Puma+ have it. They should say something like - anything post 2014.+ ultramobile and anything 2015.+ mobile, that would be more correct

    It started with Puma cat and Carrizo on mobile if you want, not before chips... that FX-8800 is 15h Carrizo mobile.

    I'll do some further looking, though, and be quite annoyed if it turns out to be true...assuming those Kabini APUs aren't throttled like the FX-8800p was everywhere.
    Nope Kabini is cat 16h, while that one FX-8800p is 15h Carrizo say like Bulldozer branch and all of his issues While cats are entire separate design, does noz have that BD legacy, these don't share modules like 15h but have real cores altough more low power ones.

    When AMD launched Carrizo and Carrizo-L i of course laughed hard Because these two have very similar name but have nothing to do with each other than share same socket. But that Carrizo-L is actually Beema+ 16h cat design, while Carrizo full is excavator 15h or bulldozer++++ if you want

    Beema and Carrizo-L are just so called improvments over Kabini. When you further optimize power leakage and put PSP on it that became Beema, now when you also change socket of it you get Carrizo-L... so It is Jaguar++ if you want or second gen but more and more improved cat First gen was Bobcat and improvments, etc...
    Last edited by dungeon; 22 June 2017, 12:24 PM.

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  • mulenmar
    replied
    Originally posted by dungeon View Post

    That 15h is not quite true, 16h Jaguar (Kabini) does not have PSP also... PSP started with Puma cat so Beema, etc...

    https://en.wikipedia.org/wiki/List_o...icroprocessors

    Kabini is 16h but it does not have PSP, while Beema yep.
    I think I trust the libreboot developers and Raptor Computing Systems (of the failed POWER8 machine crowdfunding campaign) over some random, uncited Wikipedia article. I'll do some further looking, though, and be quite annoyed if it turns out to be true...assuming those Kabini APUs aren't throttled like the FX-8800p was everywhere.

    EDIT: Well, shit. It's still present, but not enabled. Wish I'd known that before I bought that laptop with the throttled-to-15W FX-8800p.
    Last edited by mulenmar; 22 June 2017, 11:03 AM.

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  • ObiWan
    replied
    Originally posted by boxie View Post

    for info - My Asus mobo there is this beta bios available
    Code:
    PRIME X370-PRO BIOS 0803
    Beta BIOS with AGESA 1.0.0.6
    so if you haven't already got it, it might be in the pipeline
    MSI provides beta bioses for Michaels board with 1.0.0.6 aswell



    Afaik 1.72,1.73 and 1.74 are with AGESA 1.0.0.6

    Leave a comment:


  • Holograph
    replied
    Can you do some Vulkan tests with Ryzen and 7700K not running all of their cores? I don't know if your boards let you do that in UEFI or not.

    I wonder if RADV has some sort of thread synchronization performance problem. Maybe it's trying to make use of more cores but is adding more overhead than it is adding performance.

    I don't know if disabling some cores will help test that scenario but maybe.

    Leave a comment:


  • dungeon
    replied
    Originally posted by mulenmar View Post
    Bay Trail is just mobile, SoC Ivy Bridge. So, pretty much anything from the old, PSP-free 15h APU family. Turion, I think it was called?
    That 15h is not quite true, 16h Jaguar (Kabini) does not have PSP also... PSP started with Puma cat so Beema, etc...

    Well, that "Bay Trail category" is per AMD categorized as ultramobile (well It is not only ultramobile, but real lowpower design or just so called Cats ), not mobile:

    https://en.wikipedia.org/wiki/List_o...icroprocessors

    Kabini is 16h but it does not have PSP, while Beema yep.



    They drop something in that ultramobile category every year, Carrizo-L (last cat Puma+), Stoney (that one is excavator 15h not a cat) and such.
    Last edited by dungeon; 22 June 2017, 11:01 AM.

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  • mulenmar
    replied
    Originally posted by franglais125 View Post
    What will be AMD's offering for the Bay Trail category? Will there be anything?
    Bay Trail is just mobile, SoC Ivy Bridge. So, pretty much anything from the old, PSP-free 15h APU family. Turion, I think it was called? If you meant mobile in general, laptops with Ryzen+Vega APUs will be coming out "second half of 2017". I'd suggest sticking with the 15h family for security reasons, until and unless AMD finally stops hemming and hawing and just opens up the PSP's design and coding, though -- assuming you don't mind that the flagship FX-level APUs of that era are, to my knowledge, *all* thermally-throttled. >_> Good luck doing anything with the iGPU without the CPU getting massively downclocked.

    re: the instability, I've only had issues so far as OpenGL and the aforementioned Vulkan stuff go. Mesa's Intel driver is fine running things in the default, OpenGL 3.0 compatibility profile, but anything trying to use something above that -- up to and including the max OpenGL 4.2 Core -- just crashes on initialization. (Tested via MESA_GL_VERSION_OVERRIDE). Nothing else goes down with it, though, so I'd say it's a pretty different issue than you have.

    I remember there being something you added to the kernel config line to prevent it from dropping the CPU into a lower C-State that helped with some Intel chipsets, your tried it?

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  • boxie
    replied
    Originally posted by bridgman View Post

    AFAIK there are two separate considerations related to RAM speed.

    The first is the usual "faster RAM gives more bandwidth / lower latency" and a number of apps showed performance gains starting to trail off after ~2666 as you said. Some apps need more bandwidth than that, however, and those apps will continue to scale up to considerably higher speeds (those are the apps that benefit from 4 memory channels).

    The second relates to the inter-CCX connection, where inter-CCX latency decreases as memory clock is increased.There are a relatively small number of apps where this is a big factor, but again those apps continue to see improvement past 2666.

    So it depends to some extent on what kind of apps you are running. But given a choice between 8GB of 3200 and 16GB of 2666 I would go with more/slower as well. That said, I don't remember the knee of the price curve being that low - anything up to 3000 seemed to cost pretty much the same a few months ago, and that number might be up to 3200 now.
    That's good to know - I kinda got spend happy when I went to get my new system - ended up with 32GiB of 2666 vs 16 of 3200

    Leave a comment:


  • boxie
    replied
    Originally posted by Michael View Post

    No new BiOs updates yet for my boards... I routinely check but nothing yet with the ne2 AGESA.
    for info - My Asus mobo there is this beta bios available
    Code:
    PRIME X370-PRO BIOS 0803
    Beta BIOS with AGESA 1.0.0.6
    so if you haven't already got it, it might be in the pipeline

    Leave a comment:


  • dungeon
    replied
    Originally posted by Strunkenbold View Post
    Now that Marek landed his latest series to reduce CPU overhead, this test is already obsolete.
    Future is obsolete too, you just need to wait long enough

    Leave a comment:

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