1800x system available

By: Adrian (a.delete@this.acm.org), March 17, 2017 3:18 pm
Room: Moderated Discussions
muziqaz (m.delete@this.gmail.com) on March 17, 2017 3:07 pm wrote:

>
> but wouldn't -march=znver1 help a bit?
> anyways, I will disable HT and try with different flags a bit later ;)


If you have a gcc 6.x, you can try -march=znver1, but I doubt that it would be better than -march=haswell.

The work to implement -march=znver1 is not finished yet. The znver1 code was initially copied from the Bulldozer code, then they began changing it to suit Zen.

I do not know how much of the Bulldozer code has been replaced until now and how much of it remains. What is certain is that the Bulldozer optimizer is much worse for Zen than the Haswell optimizer. So until the gcc work will replace all Bulldozer specific code, -march=znver1 will not give the best results.
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TopicPosted ByDate
Is Ryzen 6-wide?Travis2017/03/03 06:27 PM
  Is Ryzen 6-wide?Maynard Handley2017/03/03 06:50 PM
  AMD describes it as 6 wideVertexMaster2017/03/03 11:27 PM
    AMD describes it as 6 wideExophase2017/03/04 12:21 PM
      AMD describes it as 6 wideanon2017/03/04 12:54 PM
        AMD describes it as 6 wideTravis2017/03/04 01:12 PM
          AMD describes it as 6 wideTravis2017/03/04 02:05 PM
            AMD describes it as 6 wideExophase2017/03/04 05:16 PM
              AMD describes it as 6 wideMichael S2017/03/05 10:27 AM
              AMD describes it as 6 wideTravis2017/03/05 12:45 PM
                AMD Ryzen inst lat and tputPer Hesselgren2017/03/07 12:00 AM
                  AMD Ryzen inst lat and tputTravis2017/03/07 01:50 PM
                    AMD Ryzen inst lat and tputGabriele Svelto2017/03/08 04:37 AM
                      AMD Ryzen inst lat and tputTravis2017/03/08 12:03 PM
                  AMD Ryzen inst lat and tputTravis2017/03/07 02:01 PM
                    Sorry, failed to properly close code tag :( (NT)Travis2017/03/07 02:02 PM
                    AMD Ryzen inst lat and tputPer Hesselgren2017/03/07 02:48 PM
                      AMD Ryzen inst lat and tputTravis2017/03/07 03:16 PM
                      AMD Ryzen inst lat and tputPer Hesselgren2017/03/07 03:19 PM
                        AMD Ryzen inst lat and tputPer Hesselgren2017/03/18 07:50 AM
                          AMD Ryzen inst lat and tputPer Hesselgren2017/03/18 08:05 AM
                            AMD Ryzen inst lat and tput-7zipPer Hesselgren2017/03/25 03:48 AM
                  FMA tput looks like a mistakeMichael S2017/03/12 03:24 AM
                    FMA tput looks like a mistakeGian-Carlo Pascutto2017/03/14 01:27 AM
                      FMA tput looks like a mistakeMichael S2017/03/14 03:39 AM
                        FMA tput looks like a mistakeGian-Carlo Pascutto2017/03/14 07:36 AM
                          FMA tput looks like a mistakeMichael S2017/03/14 08:45 AM
                      FMA tput looks like a mistakeEmil Briggs2017/03/14 04:24 PM
                        FMA tput looks like a mistakeGian-Carlo Pascutto2017/03/15 01:32 AM
        AMD describes it as 6 wideBrett2017/03/04 01:39 PM
      AMD describes it as 6 wideTravis2017/03/04 01:06 PM
        FP & Int pipelines, AVX-256VertexMaster2017/03/04 02:09 PM
          FP & Int pipelines, AVX-256Travis2017/03/04 03:26 PM
          No Ryzen BKDG yetg c2017/03/19 07:43 AM
            No Ryzen BKDG yetGroo2017/03/20 02:02 PM
              No Ryzen BKDG & revision guide yetBrendan2017/03/22 12:37 AM
                No Ryzen BKDG & revision guide yetmuziqaz2017/03/22 03:26 AM
                No Ryzen BKDG & revision guide yetGroo2017/03/22 06:54 AM
                  No Ryzen BKDG & revision guide yetAdrian2017/03/22 07:54 AM
                  No Ryzen BKDG & revision guide yetblue2017/03/22 07:58 AM
                    FMA3 bug possibly connected to power managementhobold2017/03/22 09:14 AM
                      FMA3 bug possibly connected to power managementMatthias Waldhauer2017/03/28 07:20 AM
                        FMA3 bug only in WindowsPer Hesselgren2017/04/05 06:29 AM
                    No Ryzen BKDG & revision guide yetGroo2017/03/23 06:50 AM
                  No Ryzen BKDG & revision guide yetBrendan2017/03/23 11:31 PM
                    No Ryzen BKDG & revision guide yetMatthias Waldhauer2017/03/24 06:08 PM
        AMD describes it as 6 wideDavid Kanter2017/03/04 04:19 PM
          AMD describes it as 6 wide (how to test this?)Domaldel2017/03/22 09:58 AM
            AMD describes it as 6 wide (how to test this?)Travis2017/03/22 03:17 PM
              AMD describes it as 6 wide (how to test this?)Domaldel2017/03/23 12:49 AM
        AMD describes it as 6 wideanon2017/03/04 05:16 PM
          AMD describes it as 6 wideTravis2017/03/05 12:55 PM
            AMD describes it as 6 wideDavid Kanter2017/03/05 06:31 PM
              AMD describes it as 6 wideTravis2017/03/05 07:23 PM
                AMD describes it as 6 wideDavid Kanter2017/03/05 10:00 PM
                  AMD describes it as 6 wideTravis2017/03/06 11:15 AM
                    AMD describes it as 6 wideRobert David Graham2017/03/06 11:53 AM
                      AMD describes it as 6 wideTravis2017/03/06 04:09 PM
                    AMD describes it as 6 wideTIm McCaffrey2017/03/06 02:56 PM
                  AMD describes it as 6 wideDomaldel2017/03/08 04:36 PM
                1800x system availablemuziqaz2017/03/13 09:22 AM
                  1800x system availablePer Hesselgren2017/03/16 03:14 AM
                    1800x system availablemuziqaz2017/03/17 03:53 AM
                      1800x system availableAdrian2017/03/17 07:25 AM
                        1800x system availableAdrian2017/03/17 08:00 AM
                          1800x system availablemuziqaz2017/03/17 11:48 AM
                          1800x system availablemuziqaz2017/03/17 01:42 PM
                            1800x system availableAdrian2017/03/17 02:42 PM
                              1800x system availablemuziqaz2017/03/17 03:07 PM
                                1800x system availableAdrian2017/03/17 03:18 PM
                            1800x system availableAdrian2017/03/17 03:07 PM
                            1800x system availableDomaldel2017/03/18 06:40 AM
                              1800x system availablemuziqaz2017/03/18 06:54 AM
                                1800x system availablemuziqaz2017/03/18 02:28 PM
                                  1800x system availablePer Hesselgren2017/03/21 12:30 AM
                                    1800x system availablePer Hesselgren2017/03/21 02:58 AM
                                    1800x system availableGian-Carlo Pascutto2017/03/21 12:25 PM
                                      1800x system availableMichael_S2017/03/21 02:24 PM
                                        1800x system availableGian-Carlo Pascutto2017/03/21 02:56 PM
                                          1800x system availableMichael S2017/03/21 03:36 PM
                                            done (NT)Michael S2017/03/22 03:59 AM
                                      1800x system availableanonymou52017/03/21 03:27 PM
                                        1800x system availableWilco2017/03/22 06:17 PM
                                          1800x system availableDomaldel2017/03/23 12:52 AM
                                          1800x system availableanonymou52017/03/23 12:24 PM
                                            1800x system availableKlimax2017/04/03 01:35 AM
                                    1800x system availablemuziqaz2017/03/22 03:25 AM
                                      1800x system availablemuziqaz2017/03/24 03:24 AM
                              1800x system availableAdrian2017/03/18 08:36 AM
                    1800x system availablePer Hesselgren2017/03/17 08:49 AM
                      1800x system available-16TPer Hesselgren2017/03/17 01:10 PM
                      1800x system availableMichael S2017/03/18 10:21 AM
                        1800x system availablePer Hesselgren2017/03/19 03:06 AM
                          better test desired. This one is not pushing FPU to the limitsMichael S2017/03/19 04:28 AM
                            better test desired. This one is not pushing FPU to the limitsPer Hesselgren2017/03/19 08:49 AM
                              better test desired. This one is not pushing FPU to the limitsPer Hesselgren2017/03/19 10:47 AM
                                better test desired. This one is not pushing FPU to the limitsMichael S2017/03/19 11:45 AM
                                  better test desired. This one is not pushing FPU to the limitsMichael S2017/03/19 11:47 AM
        AMD describes it as 6 widePoindexter2017/03/05 07:55 PM
          AMD describes it as 6 wideTravis2017/03/05 08:05 PM
            AMD describes it as 6 wideDavid Kanter2017/03/05 10:03 PM
              AMD describes it as 6 wideTravis2017/03/06 11:19 AM
                AMD describes it as 6 widePoindexter2017/03/07 08:54 AM
                  AMD describes it as 6 wideTravis2017/03/07 01:54 PM
                  AMD describes it as 6 wideanon2017/03/08 04:19 AM
                    AMD describes it as 6 wideTravis2017/03/08 12:35 PM
                      AMD describes it as 6 wideanon2017/03/08 02:48 PM
                        AMD describes it as 6 wideTravis2017/03/09 12:02 PM
                          AMD describes it as 6 wideanon2017/03/09 05:44 PM
                            AMD describes it as 6 wideanon2017/03/12 08:28 AM
                            AMD describes it as 6 wideTravis2017/06/20 04:48 PM
                              AMD describes it as 6 wideAdrian2017/06/21 07:48 AM
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