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[PCGamesN]Patents show AMD’s post-Navi GPU could use an Nvidia-like architecture

 
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Old 02-06-2019, 03:08 PM - Thread Starter
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[PCGamesN]Patents show AMD’s post-Navi GPU could use an Nvidia-like architecture

Source: https://www.pcgamesn.com/amd/amd-nex...cture-arcturus

Quote:
AMD’s next generation of graphics architecture is coalescing before our very eyes. A freshly unearthed patent application, published in mid-December 2018, shows a new design for AMD’s post-GCN, high-bandwidth, low-power, stream processors. And there’s a heavy emphasis on improving the parallel processing compute power of its next-gen GPUs and increasing their efficiency at the same time. And it has a faint whiff of Nvidia’s SM design about it too.
Got me hyped for Arcturus!

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Old 02-06-2019, 04:14 PM
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It's Super-SIMD, tho.

Big Super-SIMD CU -> 128x32 in VLIW2 <-- Negligible area gain for higher performance
Small Super-SIMD CU -> 64x32 in VLIW2 <-- Reduced area for same performance.

The CU design is identical to standard GCN. imho, SuperGCN might be more apt for the name.


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Old 02-06-2019, 04:44 PM
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I'm a laymen when it comes to the technical stuff but the diagram they show looks similar to the diagrams I've seen for Ryzen.

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Old 02-06-2019, 05:15 PM
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The good news here is they're developing at least one more Rasterization architecture in the near future.

With the way people talk about Ray Tracing it sounds like we should expect the whole industry to go pure RT in the next 10 years, and I'm sure Nvidia would make the jump tomorrow if they could force the software transition.

In the distant future I'm betting the market is going to end up splitting into different rendering methods though.
Rasterization is faster than Ray Tracing, it's always going to be more efficient and you can't get around it. Someday we're going to see games jump back to simpler rendering methods for the sake of getting more visual impact per watt.
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Old 02-06-2019, 05:44 PM
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Quote: Originally Posted by UltraMega View Post
I'm a laymen when it comes to the technical stuff but the diagram they show looks similar to the diagrams I've seen for Ryzen.
It's not though.

It is actually showing a Graphic Core Next-derived compute unit. Example; https://i.imgur.com/1hXaPUf.jpg

The major changes is that;
- The Vector ALUs now are effectively Superscalar(Supervector?); SIMD16 to 2xSIMD16
- The VGPR have been changed from a large Vec-16 into four Vec-4 VGPRs. So, instead of 4x 64 Kilobytes of VGPR, it is 16x 16 Kilobytes of VGPR. The change is for the Vec4 Side ALUs, Side ALUs are also called transcendental ALUs.

Of which two VALU clusters(200a/200b) + Scheduler(SQ), Local Data Share(LDS), 1 x 16x Texture(TATD), 1 x Level-1 Data Cache(TCP); equals one Small Super-SIMD CU.
Of which four VALU clusters(200a/200b/200c/200d) + Scheduler(SQ), Local Data Share(LDS), 2 x 16x Texture(TATD), 2 x Level-1 Data cache(TCP); equals one Big Super-SIMD CU.


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Old 02-06-2019, 09:42 PM
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So by the sounds of it, they are taking a page out of VLIW2 design, and improving upon its shortcomings?

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Old 02-06-2019, 10:26 PM
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If you can't beat them, copy them?

If this is post navi, I expect we won't see it before 2021. Navi (and most likely its refresh) will dominate AMD's sales since this supper and next year.


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Old 02-06-2019, 11:06 PM - Thread Starter
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Quote: Originally Posted by Defoler View Post
If you can't beat them, copy them?

If this is post navi, I expect we won't see it before 2021. Navi (and most likely its refresh) will dominate AMD's sales since this supper and next year.
It's expected to be out in 2020 according to AMD's roadmap. Lately they've been on point with their releases. Arcturus is their next high end GPU and they confirmed they're going to their old naming model. Most likely the Radeon 700 series.

Glad they are finally making a decent high end desktop GPU. Vega was a semi custom design for Apple and Navi is semi custom design for Sony.

Maybe Arcturus is another semi custom design for Apple?

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Old 02-06-2019, 11:16 PM
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Quote: Originally Posted by WannaBeOCer View Post
It's expected to be out in 2020 according to AMD's roadmap. Lately they've been on point with their releases. Arcturus is their next high end GPU and they confirmed they're going to their old naming model. Most likely the Radeon 700 series.

Glad they are finally making a decent high end desktop GPU. Vega was a semi custom design for Apple and Navi is semi custom design for Sony.

Maybe Arcturus is another semi custom design for Apple?
Could be, given how Apple's relationship with Nvidia seemingly get worse every year, they will keep relying on AMD for GPUs on their Macs.

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Old 02-08-2019, 05:12 AM
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