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Ask Me Anything - Official AMD Radeon Representatives - page 2

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  1. what about VCE support, what applications support it?
    Will AMD have a geforce experience like program for recording on screen footage?
  2. Another question from me; I remember there was something on the GPU 14 event that mentioned anti-aliasing support with deferred rendering / lighting. I was wondering if this included super sampling anti-aliasing as well.
  3. Does AMD have any plans to beef up its' mobile graphics department for laptops and tablets or are you going to concentrate more on the APU department? And is AMD working on anything to counter NVIDIA's Tegra 3/4 platform for tablets and mobile phones? With tablets like the Surface Pro 2 pushing the limits of what a tablet can do, would putting powerful Radeon graphics cards in them be the next logical step for AMD?
  4. Thracks said:
    ejb222 said:
    Can you give an indication the performance gain of Mantle? Will it be purely in FPS or will it be visual...i.e. better graphics, more eye candy, improvements to tress-fx. Is it used in conjunction with D3D or by itself?


    Mantle can be used to increase raw FPS, or to increase image quality while maintaining the same FPS.

    It is a complete and standalone graphics API, meaning Mantle must be capable of coding and rendering all the in-game effects you see today. But Mantle also needs to be sufficiently extensible so that we can collaborate with game studios to create the effects of tomorrow—and it is extensible to do so!


    Thanks for that.
    I would assume that Mantle carries all the same graphic rendering abilities that other current APIs carry? Or are capable of rendering all the same effects or more or less?
    Are they any graphical distinctions between Mantle and other APIs? Like for example, Tress FX in a way. Something that differentiates itself or sets it above other APIs?
  5. Cpus from intel seem to perform better when gaming.
    a)Does AMD sometimes sacrifices quality to ensure lower and more competitive price, or is it intel's hardware fetching better?
    b)When developing a new GPU do you cooperate with other AMD departments to ensure maximum performance when using amd products together?
  6. ubercake said:
    What is a single tech that AMD is currently working on that you don't feel there is enough buzz about? Something possibly overlooked or overshadowed but to which we should really be paying attention?


    My favorite is the new implementation of PowerTune on the 290X and 290. There's a lot of doom and gloom around the 95C temperature, because people are used to a world where the product is designed to run as cold as possible... but that's not the world we're living in with these units. The doom and gloom is based on an old viewpoint.

    95C is the optimal temperature that allows the board to convert its power consumption into meaningful performance for the user. Every single component on the board is designed to run at that temperature throughout the lifetime of the product.

    If you throttle the temperature down below that threshold, then the board must in turn consume less power to respect the new temperature limit. Consuming less power means lowering vcore and engine clock, which means less performance.

    You want to take full advantage of product TDP to maximize performance, and that is accomplished with a 95C ideal operating temperature for the 290 and 290X.

    Even with a third-party cooling solution, like the Accelero 3 some users have started deploying, the logic of PowerTune will still try to maximize TDP by allowing temperatures to float higher until some other limit is met (voltage, clock, fan RPM, whatever).

    It's so bloody smart and it kills me that more people don't fully understand it.
  7. ksarex said:
    Cpus from intel seem to perform better when gaming.
    a)Does AMD sometimes sacrifices quality to ensure lower and more competitive price, or is it intel's hardware fetching better?
    b)When developing a new GPU do you cooperate with other AMD departments to ensure maximum performance when using amd products together?


    I cannot comment on A as I don't work in the CPU division.

    With respect to B, we design our GPUs to have the same level of compatibility with whatever CPU the user has. We do not optimize graphics hardware or drivers for any CPU architecture over another.
  8. Is AMD planning any 6 or 8 core processors based on Steamroller or future technology?

    Any plans to use EDRAM in future APUs? (like Intel's Crystalwell)
  9. So heres a question. And maybe I have this backwards so bare with me.. On the latest architecture AMD uses for CPU's (bulldozer piledriver etc) Why did you opt to have half the execution cores? In my mind it would seem to cause a internal latency in high CPU use situations.

    And based on previous commends by Mr. Reed. Will there be any plans to try to get back in the enthusiast space? IE a solution that can beat out a i7 (k) series?
  10. Hi,

    I am a big fans of AMD over the years. There's 1 thing Nvidia GPU is attracting me which is PhysX. So far for me i felt PhysX better than TressFX. Is there any plan for your competitor PhysX? I cant see any improvement on TressFX for your new released card

    Thanks
  11. Opps didnt realize only the Radeon side... In that case...

    What was the influence to do something like Mantle when we have seen other projects like it "GLIDE" fail? What do you think will make your solution better or more enduring? Especially since the console market didn't want it? (Granted will say my 7970 works amazing max settings in BF4) :)
  12. Has AMD considered about making Downsampling software for high end cards? As you guys have stated before, the 290 is meant for 4k monitors but currently the standard for monitors and TVs is 1080p. It has been proven and tested that downsampling improves image quality. (I think it will be a great feature for SteamOS)
  13. Someguy316 said:
    Another question from me; I remember there was something on the GPU 14 event that mentioned anti-aliasing support with deferred rendering / lighting. I was wondering if this included super sampling anti-aliasing as well.


    You're referring to Forward+. I want to give some background on Forward+ so other people know what it is:

    Forward+ not only allows for the efficient utilization of thousands of light sources, but also performs an accurate simulation of their interactions with objects in the world. Forward+ also resolves the developer’s choice between a “forward” or “deferred” rendering engine for their game, which can have serious implications for the look, feel and features of a title.

    For example, a “forward” rendering engine supports anti-aliasing, texture transparencies (like leaves and chainlink fences), and a wide variety of texture types (e.g. cloth and metal). Meanwhile, a “deferred” engine supports a large number of light sources, efficient rendering effects (“shaders”), and works well on game consoles. Thanks to Forward+, all of these technologies can efficiently coexist.

    Forward+ further extends its leadership over forward and deferred engines by substantially increasing the diversity in the material types that a game may render. Whereas lighting on cloth and metal textures might look very similar on a game with a deferred engine (e.g. old gen consoles or console ports), Forward+ can render the distinct and realistic lighting differences between them.

    Because of the way Forward+ is designed, it's suitable for use with both MSAA and SSAA.

    ejb222 said:
    Thracks said:
    ejb222 said:
    Can you give an indication the performance gain of Mantle? Will it be purely in FPS or will it be visual...i.e. better graphics, more eye candy, improvements to tress-fx. Is it used in conjunction with D3D or by itself?


    Mantle can be used to increase raw FPS, or to increase image quality while maintaining the same FPS.

    It is a complete and standalone graphics API, meaning Mantle must be capable of coding and rendering all the in-game effects you see today. But Mantle also needs to be sufficiently extensible so that we can collaborate with game studios to create the effects of tomorrow—and it is extensible to do so!


    Thanks for that.
    I would assume that Mantle carries all the same graphic rendering abilities that other current APIs carry? Or are capable of rendering all the same effects or more or less?
    Are they any graphical distinctions between Mantle and other APIs? Like for example, Tress FX in a way. Something that differentiates itself or sets it above other APIs?


    Yes, Mantle is a complete graphics API capable of doing anything you see today. And more. The primary advantage, however, is that it can speak directly to the hardware in a unique way that other APIs cannot.
  14. Hi, I haven't seen any answers with regards to your CPU department yet, just your GPU department. Is this being done on purpose because of some news being released on the 11th Nov or have you just overlooked the questions?
    If it is the latter, are there any Steamroller FX-CPUs coming out or was the 9000 series the end of the FX line? I'd rather know now because I'd rather have a strong CPU and GPU separate than have a Weaker CPU and GPU sitting together.
  15. I don't know if you have taken a look at your competitor's website, the "GeForce" brand image is really strong, from their website, forum, to their Geforce Experience software, everything is polish and consistent. I think you guys really need an overhaul in terms of the "face" and product image you want to present to your customers, rather than fragment of places and visual themes that it is right now. What do you think?

    And I think you need actual support staff from AMD to answer some questions, who can assist politely and professionally. When I go there, I don't see the kind of lively discussions that your competitor has enjoyed in their forum, and what is worse is some regulars who appear to be helpful but sometimes give out rude comments and even be paranoid and accuse your customers who posted technical problems.

    Thanks for reading my concerns.
  16. lunaticwoda said:
    Opps didnt realize only the Radeon side... In that case...

    What was the influence to do something like Mantle when we have seen other projects like it "GLIDE" fail? What do you think will make your solution better or more enduring? Especially since the console market didn't want it? (Granted will say my 7970 works amazing max settings in BF4) :)


    Game developers requested Mantle themselves. That's the key difference. The industry told us they want it.

    Anonymous said:
    Has AMD considered about making Downsampling software for high end cards? As you guys have stated before, the 290 is meant for 4k monitors but currently the standard for monitors and TVs is 1080p. It has been proven and tested that downsampling improves image quality. (I think it will be a great feature for SteamOS)


    We are not considering any such software.
  17. You say that developers requested Mantle. How so?
    And what is your favorite color? ;)
  18. "You want to take full advantage of product TDP to maximize performance, and that is accomplished with a 95C ideal operating temperature for the 290 and 290X. "

    So there is no benefit in performance if the card could run cooler? Wouldn't you be able to get more performance before you hit 95c?
  19. nathanoakes said:
    Hi, I haven't seen any answers with regards to your CPU department yet, just your GPU department. Is this being done on purpose because of some news being released on the 11th Nov or have you just overlooked the questions?
    If it is the latter, are there any Steamroller FX-CPUs coming out or was the 9000 series the end of the FX line? I'd rather know now because I'd rather have a strong CPU and GPU separate than have a Weaker CPU and GPU sitting together.


    No answers have been provided on CPUs as all members of AMD in attendance today are from the Radeon business in Markham, Ontario. :) We cannot comment on products I don't intimately know!

    Anonymous said:
    I don't know if you have taken a look at your competitor's website, the "GeForce" brand image is really strong, from their website, forum, to their Geforce Experience software, everything is polish and consistent. I think you guys really need an overhaul in terms of the "face" and product image you want to present to your customers, rather than fragment of places and visual themes that it is right now. What do you think?

    And I think you need actual support staff from AMD to answer some questions, who can assist politely and professionally. When I go there, I don't see the kind of lively discussions that your competitor has enjoyed in their forum, and what is worse is some regulars who appear to be helpful but sometimes give out rude comments and even be paranoid and accuse your customers who posted technical problems.

    Thanks for reading my concerns.


    I invite you to check out the new www.amd.com, which was just updated for a uniform look and feel. I also invite you to interact with us on Twitter and Facebook, which are monitored 24 hours a day by individuals like myself who enjoy interacting with customers/fans/etc. I like taking the time to reach out to people.
  20. I would suggest a second AMD AMA for the CPU/APU side of things. Lots of questions here on the subject(s).
  21. ejb222 said:
    You say that developers requested Mantle. How so?
    And what is your favorite color? ;)


    Johan from DICE sat across the table from Matt Skynner, the GM of our graphics business, and explained how he wanted a close-to-metal graphics API. Matt said "we can do that," and the rest was history.

    Other devs are very excited when they learn about what Mantle is capable of, and how Mantle can help them bring their game to life on the PC.

    //edit: my favorite color is eminence: http://en.wikipedia.org/wiki/Shades_of_purple#Eminence

    Anonymous said:
    "You want to take full advantage of product TDP to maximize performance, and that is accomplished with a 95C ideal operating temperature for the 290 and 290X. "

    So there is no benefit in performance if the card could run cooler? Wouldn't you be able to get more performance before you hit 95c?


    A better cooler increases the watts of heat that the product can emit before the 95C equilibrium temperature is reached. In turn, this raises the maximum permissible clockspeed (within the limit of product TDP) the board can sustain.

    Users with the Accelero coolers are finding they're reaching the clockspeed limit of the product at a lower temperature limit than 95C. So you can see how the experience is very customizable and interesting for enthusiasts.
  22. What are the chances of your marketing department creating a video of Jim Keller and Raja Koduri preforming the Fusion Dance from Dragonball Z in order to promote Kaveri and HSA?
  23. With the industry's newfound focus on integrated graphics solutions, where do you see AMD's graphics card division in the future?
  24. sumludus said:
    What are the chances of your marketing department creating a video of Jim Keller and Raja Koduri preforming the Fusion Dance from Dragonball Z in order to promote Kaveri and HSA?


    Such a dance would take 10 conferences to complete, and may require the use of a Potara Earring.
  25. We all want to know:

    - How much performance increase are we looking at with mantle enabled games?
    - Is there any graphical improvement/options unlocked while using mantle?

    - Are we going to see more FX series processors competing in the mid and high-end market?
  26. Hi Thracks,

    Why AMD is not giving 2gb DDR5 version for 6670HD and 7750HD than providing 2gb DDR3 version for the same?
    I think both these cards are capable of using more than 1gb video memory compared to ddr3 version for the same cards.
  27. Why won't AMD open up there processors to allow for more than 4 DIMMS on motherboards.
  28. Thanks for hosting this!

    You already addressed my question about when some tasty new games would be coming to Never Settle (coupon is sitting on my desk). Thank you!

    I wanted to ask about plans for SteamOS support. Does that have an impact on your plans for the fglrx driver? And while I'm sure it's a secondary priority, is Mantle going to be supported by fglrx? Or maybe it's too early to know that.

    My A10 / 7950 gaming box might move to the living room and become a Steam Machine, but if SteamOS had support I'd build a new Kaverti system for the living room and leave my Windows one where it is.
  29. 1. Any news on moving away from Dual-Channel for the FX chips and beyond?

    2. More aggressive toward the higher end gaming like Intel is?

    3. Any news on getting more vendor to produce more motherboards? Seems there are a lot more Intel base motherboards out there.
  30. pokerapar88 said:
    We all want to know:

    - How much performance increase are we looking at with mantle enabled games?
    - Is there any graphical improvement/options unlocked while using mantle?

    - Are we going to see more FX series processors competing in the mid and high-end market?


    Question 1:
    I cannot give you a precise answer now, but the first performance numbers will be revealed during the AMD Developer Conference next week. Keep your eyes open on the 13th.

    Question 2:
    This is up to the game developer. Mantle is a complete and high-performance graphics API, therefore the developer can use the performance boosts to increase raw FPS, or they can sustain the same FPS and increase image quality vs. other APIs.

    Question 3:
    Not a CPU guy, sorry.

    Anonymous said:
    Hi Thracks,

    Why AMD is not giving 2gb DDR5 version for 6670HD and 7750HD than providing 2gb DDR3 version for the same?
    I think both these cards are capable of using more than 1gb video memory compared to ddr3 version for the same cards.


    2GB framebuffer would not be useful on these cards. The architectural implementations on these products target resolutions and image quality settings that don't require 2GB of RAM. That allows the product to hit the specific prices users in this segment expect.
  31. Dear AMD,
    I have always been a devoted customer in the old ATI age or namely the Radeon 7500 on AGP. For as long as I can remember ATI/AMD and nVidia has always moved the gaming performance crown up and down, I was just reaping the amazing performance of Radeons in content creation software.

    In the past 5 years I am stuck on nVidia, because Adobe/Autodesk reached for CUDA. I would have really liked to slam in HD7750 with a passive cooler and enjoy some amazing OpenCL performance for a cent of the price, but alas CUDA is what works. Now that OpenCL is mature enough Adobe started to move away from CUDA to OpenCL. Autodesk still focuses on CPU, but I do think the time for more GPU acceleration draws near.

    1 - Do you have any ongoing project or collaborations with Software companies such as Adobe or Autodesk, to push up OpenCL adoption?
    2 - Do you have any ongoing project to optimize drivers or enhanced support for AMD video cards, both workstation class and desktop class, in Adobe/Autodesk software?
    3 - I know that workstation class cards are there for a reason, but will we see any of the W-series limited features to make their way down to the Radeon series?
    4 - Do you plan on any major driver release that will increase the W-series performance in dynamics, fluids, ncloth and other simulations?
    5 - Are you allowed to hunch a date for the next workstation card line release?

    Thank you in advance.
  32. jquagga said:
    Thanks for hosting this!

    You already addressed my question about when some tasty new games would be coming to Never Settle (coupon is sitting on my desk). Thank you!

    I wanted to ask about plans for SteamOS support. Does that have an impact on your plans for the fglrx driver? And while I'm sure it's a secondary priority, is Mantle going to be supported by fglrx? Or maybe it's too early to know that.

    My A10 / 7950 gaming box might move to the living room and become a Steam Machine, but if SteamOS had support I'd build a new Kaverti system for the living room and leave my Windows one where it is.


    I want to have an answer for you, but the Steam Machines are still a very young enterprise. We are working closely with Valve to answer all of these questions, but I will say this:

    Expect AMD-based Steam Machines in 2014, which means a stable and high-performance driver is required. We've already been making massive contributions to the Linux 3.11 and 3.12 kernels to substantially improve performance and features, so you can see the evidence in our efforts there.
  33. Can you show us a roadmap on where AMD Radeon is heading over the next few years?

    Thanks for answering these questions!
  34. Can we expect a dual GPU from the R9 family, and if you can answer it when? Which quarter, month etc.
  35. Great work you guys have been doing over the past couple of years, and thanks for the AMA

    I'm wondering about the future beyond 290X. namely, can we expect another GPU release sometime next year based on a 20nm process? any information you can offer would be great
  36. AMD keeps other tech companies from having a monopoly by providing better value for money options driving prices down, any chance AMD is looking into storage solutions and jumping in the SSD market or even only fabricating the chips?
  37. Shneiky said:
    Dear AMD,
    I have always been a devoted customer in the old ATI age or namely the Radeon 7500 on AGP. For as long as I can remember ATI/AMD and nVidia has always moved the gaming performance crown up and down, I was just reaping the amazing performance of Radeons in content creation software.

    In the past 5 years I am stuck on nVidia, because Adobe/Autodesk reached for CUDA. I would have really liked to slam in HD7750 with a passive cooler and enjoy some amazing OpenCL performance for a cent of the price, but alas CUDA is what works. Now that OpenCL is mature enough Adobe started to move away from CUDA to OpenCL. Autodesk still focuses on CPU, but I do think the time for more GPU acceleration draws near.

    1 - Do you have any ongoing project or collaborations with Software companies such as Adobe or Autodesk, to push up OpenCL adoption?
    2 - Do you have any ongoing project to optimize drivers or enhanced support for AMD video cards, both workstation class and desktop class, in Adobe/Autodesk software?
    3 - I know that workstation class cards are there for a reason, but will we see any of the W-series limited features to make their way down to the Radeon series?
    4 - Do you plan on any major driver release that will increase the W-series performance in dynamics, fluids, ncloth and other simulations?
    5 - Are you allowed to hunch a date for the next workstation card line release?

    Thank you in advance.


    1) So happens we do: http://www.amd.com/us/press-releases/Pages/amd-and-adobe-2013apr5.aspx

    2) Specifically for workstation-class graphics, Adobe and Autodesk are a significant focus. They're amongst the biggest DCC packages in the world.

    3) There are examples of workstation features that exist in Radeon: 10-bit color support, double precision compute and more. But, by in large, their feature sets are distinct as dictated by the respective libraries of software run on these products.

    4) I'm not sure.

    5) Nope!
  38. Hi, and thank you very much for this question and answer sesion!

    Because it is really hard to get some connections to AMD even on exhibitions, i will use this chance to ask you some questions.

    1. The Hawaii XT with its 44 CUs in 4 blocks with 11CUs each is really ugly for a big chip. I have heared, that this is the real physical situation. Is this true, or is the real physical chip with 48 CUs?

    2. Since the HD5k series AMD have GDS, but AMD never sayed something abaout it. The only thing in the programmer guide is on http://developer.amd.com/wordpress/media/2012/12/AMD_Southern_Islands_Instruction_Set_Architecture.pdf ftrom 2012 we can read

    Quote:

    The GDS block contains support logi
    c for unordered append/consume and
    domain-launch-ordered append/consume
    operations through the global wave
    sync (GWS).

    This part is gone in the 2013 document: http://developer.amd.com/wordpress/media/2013/07/AMD_Sea_Islands_Instruction_Set_Architecture.pdf

    Why is it gone? Even in the 2011 document we can read:

    Quote:

    http://developer.amd.com/wordpress/media/2013/10/SI_3D_registers.pdf
    page 72

    25
    -
    SQ_DS_GWS_INIT: GDS Only.
    26
    -
    SQ_DS_GWS_SEMA_V: GDS Only.
    27
    -
    SQ_DS_GWS_SEMA_BR: GDS Only.
    28
    -
    SQ_DS_GWS_SEMA_P: GDS Only.
    29
    -
    SQ_DS_GWS_BARRIER: GDS Only.


    GWS is something lots of programmer wait since GPGPU is up the road...

    Why do AMD say nothing about it, and why it have gone?

    3. Is it true, that R9 290X (Hawaii XT) is only 1:8 DP:SP? If yes, why have you cut DP:SP down? 7970 have 1:4 DP:SP.

    4. Will we see GWS with OpenCL 2.0 in the future? The API declaration/call changes in OpenCL seems to show a global barrier for worksync over CUs.

    5. Have Hawaii XT for the FirePro Market 1:2 or still just 1:4 DP:SP ratio?

    6. Is there a chance to see RDMA soon with FirePro/Radeon cards? There are lot of people out there who would pray to you. If yes, please with zero copy!

    7. Is there a chance to see AMD at the SC next week?

    8. What is the situation of unified addressspace for GPU and CPU Memory. AMD say since a few years, that they will give us GPUs with coheren! unified addresspace. Is there a chance to see this in the next future?
  39. MasterMace said:
    Can you show us a roadmap on where AMD Radeon is heading over the next few years?

    Thanks for answering these questions!


    Anonymous said:
    Can we expect a dual GPU from the R9 family, and if you can answer it when? Which quarter, month etc.


    Sorry, guys. You know I cannot speculate on future roadmaps. :)
  40. any word on wayland/mir/surfface-flinger drivers?
  41. With the introduction of Win 8 / WP / Windows Store development tools, some of us have to live with Hyper-V enabled on our workstations. Performance on AMD (GPU/CPU) powered machines however is very poor for any apps (not only games) that require graphics acceleration on any level (DXVA, WPF, DX) yet I haven't been able to find any explanation, fix or announcement for a plan to remedy the issue from either AMD or Microsoft.

    Is AMD aware of the issue and, if so, could you explain what is causing the issue?

    Are there any consumer level combinations of hardware (CPU/GPU) that AMD provides that do not suffer big performance penalties with type 1 hypervisors that you can recommend?
  42. When can we expect better (aftermarket) coolers for the R9 series?

    I heard that the Hawaii has gimped GP-GPU performance this is very NVidia-esque and very disappointing.

    Are you going to continue to support Windows Vista because the latest drivers don't list support of it?
  43. Will AMD still optimize the old gen APU's graphic performance? Or it is pretty much abandoned now since the new architect APU is on the way?
  44. Question 1 Are there any updates on the steamroller for the AM3+ socket?

    Question 2 Since the market is going towards APUs is there much future for the AM3+ socket and beyond?

    Question 3 What are the future sockets and chipsets gonna look like for steamroller
  45. In 2006 when AMD bought ATI the "fusion" project was projected as the future by AMD. Is it projected that the APU will replace the separate CPU & GPU in high end enthusiast rigs and servers or is the APU more conducive to consoles, laptops, and integrated lower end PCs? Is this expected to change over time and will the APU move up the food chain?
  46. Hey there guys!

    As requested, we'll be reaching out to AMD for another round of Ask Me Anything in the next quarter that covers the CPU side of things. We'll also be extending the same invitation to other CPU manufacturers, so you'll be able to pick their brains to your heart's content. For now, if you can, please keep your q's to the graphics side of the coin so our guests can answer in turn. :) Thanks!

    -JP
  47. Was really hoping for Q&A on the CPU side too, but this is still good.

    I don't want to be seen overtly critical, but why is AMD taking the proprietary route with the Mantle API? I'm lead to believe that Mantle will be on a license basis for a year before being made open source.
    Didn't you guys criticize Nvidia for taking the proprietary route instead of OpenCL? Why the sudden change?

    p.s. Just out of curiosity, since AMD is offering water cooling as standard feature for it's current top of the line FX CPU , will AMD any time in future consider making the dual GPU version (if any, or just the 290x) with stock water cooling?? At least that will allay the critics of the 95C as the new normal .....

    Thanks
  48. What is Team Red or is it Red Team? Can I join? Lol
  49. Skysnake said:
    Hi, and thank you very much for this question and answer sesion!

    Because it is really hard to get some connections to AMD even on exhibitions, i will use this chance to ask you some questions.

    1. The Hawaii XT with its 44 CUs in 4 blocks with 11CUs each is really ugly for a big chip. I have heared, that this is the real physical situation. Is this true, or is the real physical chip with 48 CUs?

    2. Since the HD5k series AMD have GDS, but AMD never sayed something abaout it. The only thing in the programmer guide is on http://developer.amd.com/wordpress/media/2012/12/AMD_Southern_Islands_Instruction_Set_Architecture.pdf ftrom 2012 we can read

    Quote:

    The GDS block contains support logi
    c for unordered append/consume and
    domain-launch-ordered append/consume
    operations through the global wave
    sync (GWS).

    This part is gone in the 2013 document: http://developer.amd.com/wordpress/media/2013/07/AMD_Sea_Islands_Instruction_Set_Architecture.pdf

    Why is it gone? Even in the 2011 document we can read:

    Quote:

    http://developer.amd.com/wordpress/media/2013/10/SI_3D_registers.pdf
    page 72

    25
    -
    SQ_DS_GWS_INIT: GDS Only.
    26
    -
    SQ_DS_GWS_SEMA_V: GDS Only.
    27
    -
    SQ_DS_GWS_SEMA_BR: GDS Only.
    28
    -
    SQ_DS_GWS_SEMA_P: GDS Only.
    29
    -
    SQ_DS_GWS_BARRIER: GDS Only.


    GWS is something lots of programmer wait since GPGPU is up the road...

    Why do AMD say nothing about it, and why it have gone?

    3. Is it true, that R9 290X (Hawaii XT) is only 1:8 DP:SP? If yes, why have you cut DP:SP down? 7970 have 1:4 DP:SP.

    4. Will we see GWS with OpenCL 2.0 in the future? The API declaration/call changes in OpenCL seems to show a global barrier for worksync over CUs.

    5. Have Hawaii XT for the FirePro Market 1:2 or still just 1:4 DP:SP ratio?

    6. Is there a chance to see RDMA soon with FirePro/Radeon cards? There are lot of people out there who would pray to you. If yes, please with zero copy!

    7. Is there a chance to see AMD at the SC next week?

    8. What is the situation of unified addressspace for GPU and CPU Memory. AMD say since a few years, that they will give us GPUs with coheren! unified addresspace. Is there a chance to see this in the next future?



    I am not a developer, but I will answer as much as I can.

    1) 4 blocks with 11 CUs each is the configuration of the R9 290X.

    2) GDS via GWS should still be in the architecture.

    3) Yes, the R9 290 and 290X are 1:8 DP. As to "why" I do not know, except to say that these are primarily gaming graphics cards, so it would make sense that the architectural implementations are optimized for these types of workloads.

    4) I'm not sure.

    5) I do not know what the FirePro team plans.

    6) Not sure!

    7) Yes!

    8) 290 and 290X support system unified addressing.
  50. Hi, thanks for coming here and answering questions, my question is sort of cpu related but not about the next gen ones that arent released so hopefully I get my answer.
    Anyway what I would like to know is will mantle remove/help the cpu bottleneck eg if I play mantle supported games will it be worth my while buying a high end r9 290 card to pair with my trinity 4 core cpu due to the draw call increase or will the cpu still require a big upgrade to get enough out of the card to warrant buying it over say a 7870?
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