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AMD Tonga & Fiji Open-Source Performance Boosted By PowerPlay Patches

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  • #21
    Originally posted by agd5f View Post
    You need the following mesa and kernel patches for optimal performance with Fiji:
    http://people.freedesktop.org/~agd5f...r-config.patch
    http://people.freedesktop.org/~agd5f...de-table.patch
    Some tests with these patches too would be interesting.

    But Fiji is a bit too expensive for me - so looking forward to some middle-class HBM goodness

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    • #22
      Great News!

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      • #23
        Originally posted by agd5f View Post
        You need the following mesa and kernel patches for optimal performance with Fiji:
        http://people.freedesktop.org/~agd5f...r-config.patch
        http://people.freedesktop.org/~agd5f...de-table.patch
        Any idea when these will be mainlined?

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        • #24
          Originally posted by debianxfce View Post
          That is what I wrote: "So amd oss driver stack needs some improvment"
          Indeed, if nvidia driver is faster then amdgpu's all open stack then nouveau needs more improvments

          I understand comparison of blob to blob or opensource to opensource drivers or blob vs opensource of same vendor, but not blob from one vendor to opensource of another

          It is like saying "look how AMD Catalyst is fast, so nouveau needs some improvment".
          Last edited by dungeon; 14 November 2015, 01:14 AM.

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          • #25
            So, I took the liberty of running the OSS results against my R9 380. The OSS stack still needs a bunch of performance improvements - but I am excited! I may be able to get away with running the OSS driver stack when 16.04 rolls around!

            Here are my results
            http://openbenchmarking.org/result/1...BOXI-151113670

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            • #26
              Originally posted by boxie View Post
              So, I took the liberty of running the OSS results against my R9 380. The OSS stack still needs a bunch of performance improvements - but I am excited! I may be able to get away with running the OSS driver stack when 16.04 rolls around!

              Here are my results
              http://openbenchmarking.org/result/1...BOXI-151113670
              What resolution is that 2960x1050? Ah, surround dual monitors expand... something like 1280x1024 + 1680x1050?

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              • #27
                Originally posted by dungeon View Post

                What resolution is that 2960x1050? Ah, surround dual monitors expand... something like 1280x1024 + 1680x1050?
                yep - that's exactly it - a 19" 4:3 and a 22" 16:10. I used to have another pair of 19"'s but they died from dodgy capacitors a few years back.

                The plus side of a 22" monitor is I get lots of FPS

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                • #28
                  Originally posted by dungeon View Post

                  390X as GCN 1.1 gen is supported by radeon driver.

                  sorry about this stupid question but i don't understand one thing if you take 285 card its much older than the 390x and 285 will get AMDGPU support? doesn't make sense


                  what the big difference between 1.1 and 1.2

                  and what about the support radeonSI it will get improvments?
                  Last edited by nir2142; 14 November 2015, 06:43 AM.

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                  • #29
                    Originally posted by nir2142 View Post
                    ... if you take 285 card its much older than the 390x and 285 will get AMDGPU support? ...
                    The Hawaii/Grenada chip on the 390x (or 290, 290X, 390) is of older generation (Sea Islands) than the Tonga/Antigua chip (Volcanic Islands) on the 285 card (or 380 card).

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                    • #30
                      Originally posted by nir2142 View Post
                      sorry about this stupid question but i don't understand one thing if you take 285 card its much older than the 390x and 285 will get AMDGPU support? doesn't make sense
                      It make sense if you underdstand how drivers are maded, drivers are maded per GPU generation - GCN 1.2 or VI or 3drd GCN Gen or newer is what AMDGPU driver supports.

                      While those 3 numbers are marketing names (370, 380, 390X, etc...). Marketing sorted them by performance, not per generation so - 370 is first GCN gen, 380 the third and 390 is from second GCN family.

                      Yes 285 is newer gen then 390, even if it hit market much after that.

                      Compare that to let say nVidia 750 vs Titan Z. That 750 one is only one Maxwell gen from 7xx Series, all other are Kepler . So while 750 released in february 2014. and Titan Z month after that Z it is still older gen even it is released after 750 that, does not matter it is much more costly or perfromant, it is older K gen, etc...
                      Last edited by dungeon; 14 November 2015, 07:13 AM.

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