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post #521 of 525
Quote:
Andersson doesn’t just see Mantle being used for games, but also for high-performance computing scenarios. He spent a few minutes explaining that workstations and compute servers could use Mantle for GPGPU acceleration, using the API’s tools to run their software more efficiently with lower performance overheads.

One scenario was using multiple FirePro cards in a system with a single quad-core processor for a render farm, where the workloads wouldn’t bog down the system because the CPU was too busy feeding the GPUs with information, or a reverse scenario in which the CPU is left idle when it could be assisting with the workload.

In addition, render farm systems could have different GPUs and use the Mantle API to assign code to specific GPUs that may run through certain types of code better than others. I can see this particular feature being used for Bitcoin mining on Radeon GPUs where a system may have one large, powerful GPU along with several weaker ones.

Another example was using the Oculus Rift. Andersson actually mentions “VR headsets”, but he alluded to the Rift when he mentioned that in a dual-GPU system, one could use each GPU to draw information for the two screens in a VR headset, removing issues with Eyefinity and stuttering, while having the GPUs run in tandem with slightly varying data sets to render a game in 3D, using a shared memory pool and matching up their thread queues to allow things to run smoothly.
http://mygaming.co.za/news/hardware/60224-amd-mantle-api-poised-to-revolutionise-pc-gaming.html
Excellent article
post #522 of 525
Quote:
Originally Posted by fateswarm View Post

I'm euphoric. I enjoy seeing narcissistic people not accepting they are wrong.

Though sometimes it becomes charity.

Ok heading to topic in your language,
Copied from [BSN]Exclusive Videos: AMD Mantle Explained with Q&A......

OpenGL 5 target is to process uo to 1 million Draw Calls. No doubt. (OpenGL 4.4 review.pdf)
What I learned about OpenGL 5 is that many extensions can be supported by current hardware but unfortunately no current hardware is capable to do 1 million draw calls (with OpenGL).

It's Extensions need more L1D cache and much higher bandwidth efficiency to make this dream come true. (Impression of Kepler)
L1D cache in Kepler does a max of 0.66 Byte / FLOP (with 64 bit FP precision) .
while L1D cache in GCN 1.0/1.1 does 1.5 Bytes / FLOP.
AMD still leads with 226 % higher bandwidth.
So anything future OpenGL 5 extension if applied on AMD should do better than Nvidia's offering with OpenGL (It doesn't matter that Nvidia leads with 4.4 over AMD's 4.3 presently ).

But Nvidia Maxwell with 128 KB per SMX (Bandwidth is still unknown; 64 KB per SMX with Kepler and 64 KB L1 + 16 KB LDS = 80 KB total cache per CU in Tahiti) would lead with 60% more space than GCN 1.0/1.1.
Maxwell with OpenGL 5.0 might compete with Mantle though.
But we can't ignore that making it such efficient would still take a year or two.

This is all instructions requirements we were talking about. We know nothing about multicore improvements of OpenGL.

So AMD "with low die size, efficient architecture, high density library and Mantle with up to 12 or 12+ thread" already has a very big lead over any upcoming OpenGL.
And we shouldn't forget about Pirates Island (2015) might even enhance Mantle with twice the rate of draw calls or many further improvements in Mantle and fully support for OpenGL 5.0 as well.

So I suggest you to take the "million draw calls with OpenGL" with grain of salt for another year AT LEAST.

Wanna talk about future of DirectX...............
Quote:
Direct3D 11 API doesn’t even reach parity with OpenGL 4.4 -from the same OpenGL 4.4 pdf

Edited by sumitlian - 11/16/13 at 8:26am
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post #523 of 525
Quote:
Originally Posted by fateswarm View Post

"I can't answer with comprehensive arguments, let's call them trolls." The common response of frustrated people on the internet, oldest trick in the book. Too bad I'm way too old on the internet to bite your taunts, I've been around newsgroups when the term "troll" was invented, when did you learn it, when you were frustrated and couldn't answer with arguments?

sumitlian, you're right OpenGL takes time to implement something a proprietary AMD API does faster. It's natural, they have to get the approval of the committee and most likely to vet the actual hardware manufacturer to see if they can support those features on hardware reliably.

My main argument on it was that many people here have the illusion NVIDIA or Intel "have" to settle with mantle if they want to be hardware-specific, but that's absurd, there is already an open non-proprietary platform for common hardware-specific features, and that's called OpenGL and it already has features of the API that are hardware-specific, e.g. the tessellation stage, and it sure takes more times, but the platform is there (and it would probably take more time to convince NVIDIA to bow to AMD's API than that).

 

I'm going to repost these questions because it's really hard to understand what you want to say:

 

1) Do you think Mantle will provide a performance boost with regards to how the GPUs are utilised?

 

 

 

2) If so, how "bad" a CPU will it help, or will 4770K benefit as well?

 

 

 

3) How much would you expect it to help on the CPU side?

 

 

 

4) Is the whole "it'll improve crossfire" idea by not using AFR good?

 

 

 

5) Can Mantle, if there were no CPU bottleneck, improve fps/make frametimes smoother?

 

 

 

6) Will Mantle allow for nicer visuals because of the extra draw calls?

 

 

 


I've left some gaps for you to answer in if you're so inclined. I'd be grateful if you do answer, it'd help a lot.

post #524 of 525
Quote:
Originally Posted by 47 Knucklehead View Post

And a $3500 4K monitor isn't?

And people laugh at me when I pretty much ignore and totally discount R9 290X benchmarks at 4K.

rolleyes.gif

it's a reasonable proxy to 3* 2560x1440. I already own that.
My next graphics card will be bought will 3 screen gaming in mind. It'll likely be a 290 with WC due to its pricing or perhaps a cut down 780Ti.
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post #525 of 525
Quote:
Originally Posted by xlink View Post

it's a reasonable proxy to 3* 2560x1440. I already own that.
My next graphics card will be bought will 3 screen gaming in mind. It'll likely be a 290 with WC due to its pricing or perhaps a cut down 780Ti.
It is a 1,5x higher res than 4k uhd but AMD cards scale better on higher res and deliver a better experience in multi gpu at such res.
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