AMD Ryzen and XR

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Tamina
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Post by Tamina » Wed, 8. Mar 17, 19:27

mrbadger wrote:while they do render, do it in a different way (sort of, it's complicated).
Very convincing :D :P
I was just saying if Lino gets a Ryzen processor for rendering he could do some benchmarks as well, maybe :D
We are here because of the X series, so it is a valid question to ask how another processor runs with their products. :P

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Post by mrbadger » Wed, 8. Mar 17, 19:58

Tamina wrote:
mrbadger wrote:while they do render, do it in a different way (sort of, it's complicated).
Very convincing :D :P
I was just saying if Lino gets a Ryzen processor for rendering he could do some benchmarks as well, maybe :D
We are here because of the X series, so it is a valid question to ask how another processor runs with their products. :P
I know very little about rendering, but the guy in the office next to me does lots, which makes me practically an expert...

I'm an expert on blagging CPU cycles for him on the various resources I have access to anyway.

Heavy renderers are the modern day beggers of the technology world. Begging for access time on whatever big metal is available.

(I guess that makes me an enabler :( )

Beggers who seem mostly addicted to energy drinks because they need to stay awake to see if the scene renders properly or not...
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Post by Morkonan » Wed, 8. Mar 17, 20:32

linolafett wrote:As a guy who does heavy rendering all the time, some good competition in the market is very much apprectiated. More cores and more threads are a delights when rendering on the cpu.
That's true, as long as it can rival GPU rendering. Unfortunately, it's a bit easier to push GPU rendering than it is to get additional CPUs.

I'm waiting to see what its CPU rendering capabilities are and what renderers will actually work well with it. It "could" be a cheaper alternative than stacking GPUs/Intels for a render farm, but only if it will work well. Right now, I'm solidly with NVidia/Intel for PC-based stuff, but I could be convinced to build a CPU-based render box, if the price is right and AMD doesn't bork it up.

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Post by pjknibbs » Wed, 8. Mar 17, 22:36

Tamina wrote: And does that mean that Egosoft now has to optimize it's future games for those new processors? = more work.
Well, no. A Ryzen processor still runs the same x64 instruction set that all other Intel and AMD PC processors do, so there shouldn't need to be any modifications made for this specific CPU. Optimising a game for 8-core CPUs would help Ryzen, but it would also help the high-end Intel chips as well.

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Post by red assassin » Thu, 9. Mar 17, 01:17

pjknibbs wrote:Well, no. A Ryzen processor still runs the same x64 instruction set that all other Intel and AMD PC processors do, so there shouldn't need to be any modifications made for this specific CPU. Optimising a game for 8-core CPUs would help Ryzen, but it would also help the high-end Intel chips as well.
People who write compiler optimisers, on the other hand, do have some work to do whenever a new microarchitecture comes out.
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Post by pjknibbs » Thu, 9. Mar 17, 08:41

red assassin wrote: People who write compiler optimisers, on the other hand, do have some work to do whenever a new microarchitecture comes out.
Oh, certainly, but they have to pick optimisations that will work well on all platforms. Back when the Pentium first came out, which required instructions to be re-ordered in a very specific way to get best performance, it was an easy decision to support that in a compiler because doing so did not adversely affect the 386 and 486 processors the code might otherwise run on. Nowadays, it's all a bit more complicated.

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Post by BigBANGtheory » Thu, 9. Mar 17, 10:06

I think you need to be cautious with Ryzen atm, it is clear that the new chips represent real value compared to Intel but I've seen benchmarks that basically show Ryzen not keeping up with Intel i5 in CPU thread bound circumstances. AMD has a habit of showing their hardware in the context of "when done properly you can see these great results". The problem is getting that in front of the consumer quickly and by the time it does take effect you could be looking at a new generation of hardware.

Ryzen excels at multi-core workloads and applications able to scale, applications which do not scale well (most current games tbh) won't see the benefits.

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Post by Terre » Thu, 9. Mar 17, 12:49

AMD Ryzen Performance Negatively Affected by Windows 10 Scheduler Bug
A newly discovered bug in Windows 10’s scheduler has been found to be negatively affecting performance of AMD Ryzen CPUs. The bug has been confirmed to affect all Windows 10 versions but not Windows 7. It’s not clear yet if Windows 8.1 is affected.
A truer picture will emerge with time.
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Post by Tamina » Thu, 9. Mar 17, 14:06

pjknibbs wrote:
Tamina wrote: And does that mean that Egosoft now has to optimize it's future games for those new processors? = more work.
Well, no. A Ryzen processor still runs the same x64 instruction set that all other Intel and AMD PC processors do, so there shouldn't need to be any modifications made for this specific CPU. Optimising a game for 8-core CPUs would help Ryzen, but it would also help the high-end Intel chips as well.
Okay, that is strange because AMD said that game developers have to optimise their games for the new Ryzen architecture.
BigBANGtheory wrote:Ryzen excels at multi-core workloads and applications able to scale, applications which do not scale well (most current games tbh) won't see the benefits.
Maybe it is just me, maybe it is because we are in a gaming forum but isn't the "non-gaming" part the most important one?
A lot of neutral PC magazines were totally disappointed "it is not that great for gaming, though :(" as if this would completly negate the way lower price and performance in non-gaming stuff. :?:
Terre wrote:AMD Ryzen Performance Negatively Affected by Windows 10 Scheduler Bug
A newly discovered bug in Windows 10’s scheduler has been found to be negatively affecting performance of AMD Ryzen CPUs. The bug has been confirmed to affect all Windows 10 versions but not Windows 7. It’s not clear yet if Windows 8.1 is affected.
A truer picture will emerge with time.
It seems so but we can just look up Linux benchmarks instead, right?
They don't use the same technique. (?)

AMD has announced BIOS, operating system and driver updates. Let's see how games adapt to the upcoming 6 and 4 core processors this year that are way more interesting, probably.
Maybe the 8 core enthusiast family was released earlier to solve technical teething before they hit mainstream market.
Read some articles how dissapointed they are that AMD didn't solve those problems beforehand but that makes no sense to me at all with no similar products on the market.

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Post by BigBANGtheory » Thu, 9. Mar 17, 22:33

Tamina wrote:
BigBANGtheory wrote:Ryzen excels at multi-core workloads and applications able to scale, applications which do not scale well (most current games tbh) won't see the benefits.
Maybe it is just me, maybe it is because we are in a gaming forum but isn't the "non-gaming" part the most important one?
A lot of neutral PC magazines were totally disappointed "it is not that great for gaming, though :(" as if this would completly negate the way lower price and performance in non-gaming stuff. :?:
It depends how you measure it I think. In the bigger context of market share and revenue Intel will be very precious about the server workloads and virtualisation performance as that holds a great GP (price premium) over the retail market.

To me as a consumer PC Games represent the most demmanding applications below which I could probably scale back my overclocked Haswell i7 to a last gen Core2Duo and run everything fine. So yeah games are everything to PC Gamers, other segments much less so.

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Post by red assassin » Fri, 10. Mar 17, 05:26

pjknibbs wrote:Oh, certainly, but they have to pick optimisations that will work well on all platforms. Back when the Pentium first came out, which required instructions to be re-ordered in a very specific way to get best performance, it was an easy decision to support that in a compiler because doing so did not adversely affect the 386 and 486 processors the code might otherwise run on. Nowadays, it's all a bit more complicated.
gcc at least has the option to optimise for a particular microarchitecture, with or without retaining compatibility with other processors. That's a bit of a specialist option though; as you say most binaries will just need to run well on a variety of processors.
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Post by foxxbl » Tue, 14. Mar 17, 14:31

Terre wrote:AMD Ryzen Performance Negatively Affected by Windows 10 Scheduler Bug
A newly discovered bug in Windows 10’s scheduler has been found to be negatively affecting performance of AMD Ryzen CPUs. The bug has been confirmed to affect all Windows 10 versions but not Windows 7. It’s not clear yet if Windows 8.1 is affected.
A truer picture will emerge with time.
Looks like AMD debunked that theory in the latest community update

It seems everything is OK with Ryzen thread scheduling on the Windows10.

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Post by Terre » Wed, 15. Mar 17, 09:14

foxxbl wrote:Looks like AMD debunked that theory in the latest community update

It seems everything is OK with Ryzen thread scheduling on the Windows10.
At the moment it looks like there are problems when switching threads between core clusters.

The high temperatures which are being recorded, appear to due to a deliberate 20°C offset, just plain daft in my opinion, AMD are not helping their cause with such decisions.

From an AMD community post.
AMD's Robert Hallock
By the first week of April, AMD intends to provide an update for AMD Ryzen™ processors that optimizes the power policy parameters of the Balanced plan to favor performance more consistent with the typical usage models of a desktop PC.
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Post by Tamina » Thu, 16. Mar 17, 17:26

The next Ryzen processors with 6 and 4 cores and SMT are now officially revealed by AMD to be released 11. April, already! :D
Originally it was said to be released Q2 but who would have thought?
Unfortunatly, all four processors are just deactivated 8 core units and therefore those configurations were already benchmarked by PC magazines as such and gaming performance is still below expecations.
Prices range from 170 to 250 $.

Personally I find all of this confusing af. How are intels processors priced for the same performance and how are intels processors performing for the same price?
When reading those tech magazines they already expect you to know every intel i-series processor in existence. :? :doh:
Terre wrote:The high temperatures which are being recorded, appear to due to a deliberate 20°C offset, just plain daft in my opinion, AMD are not helping their cause with such decisions.
What decisions? Is it 20° higher or lower? And which fault is it? AMD or the software programmers?

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Post by Terre » Thu, 16. Mar 17, 19:39

Tamina wrote:
Terre wrote:The high temperatures which are being recorded, appear to due to a deliberate 20°C offset, just plain daft in my opinion, AMD are not helping their cause with such decisions.
What decisions? Is it 20° higher or lower? And which fault is it? AMD or the software programmers?
The offset is higher, AMD say it's to do with the fan profiles and how they are reported, then interpreted by the testing software.
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Post by matthewfarmery » Thu, 16. Mar 17, 20:22

Tamina wrote:The next Ryzen processors with 6 and 4 cores and SMT are now officially revealed by AMD to be released 11. April, already! :D
Originally it was said to be released Q2 but who would have thought?
Unfortunatly, all four processors are just deactivated 8 core units and therefore those configurations were already benchmarked by PC magazines as such and gaming performance is still below expecations.
Prices range from 170 to 250 $.

Personally I find all of this confusing af. How are intels processors priced for the same performance and how are intels processors performing for the same price?
When reading those tech magazines they already expect you to know every intel i-series processor in existence. :? :doh:
Terre wrote:The high temperatures which are being recorded, appear to due to a deliberate 20°C offset, just plain daft in my opinion, AMD are not helping their cause with such decisions.
What decisions? Is it 20° higher or lower? And which fault is it? AMD or the software programmers?
I suspected this would be the case, AMD cutting corners. Then the new processors won't be any better then the 8 core versions. well, looks like I won't be touching AMD for the foreseeable future then.
=

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Post by pjknibbs » Thu, 16. Mar 17, 22:27

matthewfarmery wrote:Then the new processors won't be any better then the 8 core versions.
I don't think anyone really expected them to be, although there was some hope. However, they might still have Intel beat on price/performance; the cheapest Intel CPU which is a quad core with hyperthreading is the i7-7700, I think, which is around $300, twice the price of the equivalent Ryzen.

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Post by red assassin » Thu, 16. Mar 17, 23:11

Ryzen gets you more threads for your money than Kaby Lake, but the individual thread performance isn't as good. Depends on your workload which is going to be better; I don't think it's as clear cut in favour of Intel as some people are suggesting.
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Post by Tamina » Thu, 16. Mar 17, 23:30

Well since "games do not use 8 cores" and the 4 core version is essentially an 8 core processor, gaming performance shouldn't drop at all, right?
Then the gaming performance of an R7 1800X for 200 $ against an i7-7700 for 300 $ should actually beat intel for the buck, right?

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Post by Geek » Sun, 19. Mar 17, 01:56

pjknibbs wrote: However, they might still have Intel beat on price/performance; the cheapest Intel CPU which is a quad core with hyperthreading is the i7-7700, I think, which is around $300, twice the price of the equivalent Ryzen.
I doubt HT is worth it for games though. The cheaper 7600k is probably going to be the real competition.
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