Discussion RDNA4 + CDNA3 Architectures Thread

[DisEnchantment]

With the GFX940 patches in full swing since first week of March, it is looking like MI300 is not far in the distant future!
Usually AMD takes around 3Qs to get the support in LLVM and amdgpu. Lately, since RDNA2 the window they push to add support for new devices is much reduced to prevent leaks.
But looking at the flurry of code in LLVM, it is a lot of commits. Maybe because US Govt is starting to prepare the SW environment for El Capitan (Maybe to avoid slow bring up situation like Frontier for example)

See here for the GFX940 specific commits

History for llvm/lib/Target/AMDGPU - llvm/llvm-project

The LLVM Project is a collection of modular and reusable compiler and toolchain technologies. - History for llvm/lib/Target/AMDGPU - llvm/llvm-project

github.com

Or Phoronix

More AMD "GFX940" Enablement Work Landing In LLVM - Phoronix

www.phoronix.com

There is a lot more if you know whom to follow in LLVM review chains (before getting merged to github), but I am not going to link AMD employees.

I am starting to think MI300 will launch around the same time like Hopper probably only a couple of months later!
Although I believe Hopper had problems not having a host CPU capable of doing PCIe 5 in the very near future therefore it might have gotten pushed back a bit until SPR and Genoa arrives later in 2022.
If PVC slips again I believe MI300 could launch before it

This is nuts, MI100/200/300 cadence is impressive.



Previous thread on CDNA2 and RDNA3 here

Question - Speculation: RDNA3 + CDNA2 Architectures Thread

Man I have been dying to make this one for a while now. First rumours for RDNA3 are here so new thread time! Just going to start off with this one for now: kopite7kimi on Twitter: "@VideoCardz Ah, I mean a simple mcm design with 10240 cores is not enough. Because the lift from RDNA2 to RDNA3...

forums.anandtech.com

 

[Schmide]

It's been like this since two or three years ago, just set DX9 inside zoom and you'd be good to go
View attachment 122448

All I have to do is uncheck hardware acceleration receiving data. It hasn't been a problem for me till now.

It doesn't present itself as garbled video, it stutters. I looks like network errors. First thing I did was check the network. Reboot router etc.

Some streams were fine. My friend on an iPhone was perfect. I think the freezing video streams were HP laptops.

In the notes

Lower than expected performance may be observed when using YouTube on the Microsoft Edge web browser immediately after a driver install. Users experiencing this issue are recommended to restart Microsoft Edge and relaunch YouTube as a temporary workaround.

There is something wrong with the drivers, you don't pay $800 to use software rendering. If that was the case I'd use the integrated graphics and call it a day.

 

[gdansk]

If that was the case I'd use the integrated graphics and call it a day.

That's another possible workaround. You can specify per application GPU. Assign zoom to your iGPU for hardware acceleration.

But AMD is slower about fixing problems, and releases in general. When people were pointing out all the Blackwell problems I noted that Nvidia has a good reputation because usually they fix things quickly (comparatively). Not necessarily because they're problem free (as that hadn't been my experience with Turing or Ampere at launch).

 

[Hail The Brain Slug]

Some streams were fine. My friend on an iPhone was perfect. I think the freezing video streams were HP laptops.

This sounds like its an out-of-spec video stream issue. Apple tends to be the leader with regards to having the most in-spec encoding, and also the most robust player that can handle lots of out-of-spec issues playing back video so it stands to reason youd be receiving a less error/quirk prone stream from iphones.

In a way, if its due to the video stream being out of spec on some platforms, its not exactly AMD's fault.

However, the reality is nearly every streaming video will have errors or quirks that put it out of specs, so your decoder being capable of gracefully handling them is important.

I'm not attempting to absolve AMD here, their new codec engine on RDNA4 is just not going to be as mature as previous gen, so it likely doesn't have the same level of robust handling of these issues yet. I just wanted to share this possibility to say it's likely not a straightforward "AMD has a bug and isn't fixing it" issue like you seem to want it to be.

 

[Schmide]

This sounds like its an out-of-spec video stream issue. Apple tends to be the leader with regards to having the most in-spec encoding, and also the most robust player that can handle lots of out-of-spec issues playing back video so it stands to reason youd be receiving a less error/quirk prone stream from iphones.

In a way, if its due to the video stream being out of spec on some platforms, its not exactly AMD's fault.

However, the reality is nearly every streaming video will have errors or quirks that put it out of specs, so your decoder being capable of gracefully handling them is important.

I'm not attempting to absolve AMD here, their new codec engine on RDNA4 is just not going to be as mature as previous gen, so it likely doesn't have the same level of robust handling of these issues yet. I just wanted to share this possibility to say it's likely not a straightforward "AMD has a bug and isn't fixing it" issue like you seem to want it to be.

In the same vernacular. AMD is unable to handle edge cases so they are out of spec.

You can use the software version of the codec and it works. You can use a different card and it works. (yes I have more than one AMD card and a couple nvidias)

There is one odd player out and it's 9070 xt with AMD's drivers.

As posted above.

AMD's own drivers work, just not with the 9070 xt. You can't blame the other streams and call quirks if everyone handles it but AMD's 9070 xt. That's diverting and not productive.

They're having trouble with edge and youtube. (see post 3 above) Though there we can definitely blame anyone who uses edge.

What is this innate need to shift the blame? I personally think this hyper defensive posture hurts AMD's reputation. They are top 3, they should handle even the most *edge cases gracefully. They should aggressively log and categorize bugs. They've been around for 55 years (ATI 39). Though I am older. Edit: actually they got me by a month.

* yes even the edge browser. Have you tried edge its based on chrome.

 

[Hail The Brain Slug]

In the same vernacular. AMD is unable to handle edge cases so they are out of spec.



As posted above.

AMD's own drivers work, just not with the 9070 xt. You can't blame the other streams and call quirks if everyone handles it but AMD's 9070 xt. That's diverting and not productive.

They're having trouble with edge and youtube. (see post 3 above) Though there we can definitely blame anyone who uses edge.

What is this innate need to shift the blame? I personally think this hyper defensive posture hurts AMD's reputation. They are top 3, they should handle even the most *edge cases gracefully. They should aggressively log and categorize bugs. They've been around for 55 years (ATI 39). Though I am older. Edit: actually they got me by a month.

* yes even the edge browser. Have you tried edge its based on chrome.

I apologize for attempting to ensure you at least have a single clue what you're talking about before you fly off the handle on an internet forum. My bad.

Continue being an ignorant piece of work.

 

[Schmide]

I apologize for attempting to ensure you at least have a single clue what you're talking about before you fly off the handle on an internet forum. My bad.

Continue being an ignorant piece of work.

If you're going to call me "an ignorant piece of work" you should reflect on your positions and think about the motivation behind them? None of us are insiders. You artificially praised apple disparaged HP and defended AMD all in the same post. But its ok if you say

I'm not attempting to absolve AMD here

 

[Schmide]

Just to be clear. This Friday with the same streaming participants I will have.

The original computer Windows 10 that had problems with the 9070 xt driver cleaned and forced zoom update.

A fresh install linux computer with a 9070 xt in it.

A fresh install windows 11 computer with a forced zoom update. 7900xtx. I may switch the 9070 xt from the linux computer to it.

On hand I will have a 6700xt, 5700 and 3070 ti along with a 4060 laptop with rembrant+ switchable graphics to maybe switch.

You can't be ignorant if you're willing to put in the leg work. (never skip leg day)

 

[Shmee]

Please get along all. Thanks.

 

[SolidQ]

https://videocardz.com/newz/amd-radeon-rx-6500-non-xt-spotted-features-1024-cores-4gb-64-bit-memory-and-55w-tbp

Interesting what AMD going is announce today