Új hozzászólás Aktív témák

• #4268 .Ishi. aktív tag

  Új Válasz 2017-04-09 12:27:20 #4268

  Új hozzászólás

  Összes hozzászólása itt Válaszok az összes hozzászólására itt Válaszok erre a hozzászólásra

  Privát üzenet küldése

  

  .Ishi.

  aktív tag

  AMD illetékes szerint áprilisban és májusban kellene jönniük az új BIOSoknak a lapokhoz, amik megoldják a 3200Mhz-es RAM problémákat.

  Továbbá, az intel-Ryzen teljesítménykülönbségek során az is kijött egy példánál, hogy a Ryzennél a játék azt hitte, hogy csak fizikai magokból áll a hardver, mivel a programozás során nem volt még SMT. De amint megváltoztatták a játékot úgy, hogy úgy viselkedjen, mint egy intel hyperthreadinges procin, jelentős sebességnövekedést értek el.

  A két példa:

  How soon will the bios and ram speed bugs and scheduling issues ect will be fixed cuase I wanted to get a ryzen cpu but was waiting for the bugs to be ironed out?

  Ram is improving all the time. We have a huge BIOS update enabling 3200 MHz DDR4 that should hit most boards April 11th, and another one scheduled for May.

  I've heard that communication between cores on the same CCX might be significantly faster than it is across different CCXes, so is this partly a matter of keeping threads that communicate often on the same CCX, to avoid that increased latency? If it is, could that also be something that affects communications with graphics driver threads, and might there be ways for graphics driver developers, such as the Radeon team, to make sure their driver is operating on the same CCX as the thread that's communicating with it the most? It seems like something like that could potentially improve performance even for games that don't get specifically optimized for Ryzen.

  Its all over the map, there's no silver bullet, even though that's what people want to hear. The CCX latency is there, but it's not that bad and it's not responsible for the outliers. I'll give you an example of the kids of things that are holding Ryzen back: a developer found that their game code automatically assumed that AMD CPUs had all-physical cores, because we didn't have SMT before now. Once the game was guided to behave as it does on Intel hyperthreaded CPUs, we saw a notable boost in performance.

  It sounds simple, but this is what happens when a new architecture is introduced. It sounds trivial, once you know what's happening it can be easy to attack, but finding it takes work.

  Forrás: Tom's Hardware Ask Me Anything With AMD, Thursday April 6th

Új hozzászólás Aktív témák