AMD manager speaks about Bulldozer, admits failure

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Vdubchaos

Lifer
Nov 11, 2009
10,411
10
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I really REALLY wanted to buy AMD and like them but every since A64 they really haven't given me a chance to do so.

I'm not exactly a fanboi of Intel either, I simply buy the best band for the buck when I'm purchasing. Past 5+ years or so it was simply no contest.
 

Idontcare

Elite Member
Oct 10, 1999
21,118
59
91
PD based 8350 is just spanking the poor 1100T in 95% of the workloads(often by a very large margin) and OCs much better at the same time. Yet still we see people saying it's crap and even recommending old Phenom IIs over 8300/6300 (ignorance or they are just stubborn?).

33% more cores and an entire process node advantage when it comes to clockspeeds and power consumption...one would hope an 8-core 32nm CPU could best its older 6-core 45nm sibling.

Doesn't mean the 8350 is superior, just given advantages that the thuban core was never afforded.

None of that hypothetical stuff is relevant though, that is fair to say. All that matters is what you (or I) can buy right now. And my 8350 is definitely a performance beast compared to a 1100T! Spent less on it too What's not to like?
 

Idontcare

Elite Member
Oct 10, 1999
21,118
59
91
Maybe, but this is equivalent to saying that when those first P4 chips came out, Intel should have scrapped the whole line and started over.

They should have, and eventually they did. Both Willamette and Prescott were "unmitigated failures".

The PIII would have been better, but still not enough to best AMD's Athlon XP and eventual K8-based X2.

Very similar to the K10 -> Bulldozer situation IMO.

Intel had enough cash, and time, to correct their error and bring Core2 to the market. I don't know if AMD has that kind of time or money to correct their bulldozer mistake.
 

inf64

Diamond Member
Mar 11, 2011
3,764
4,223
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33% more cores and an entire process node advantage when it comes to clockspeeds and power consumption...one would hope an 8-core 32nm CPU could best its older 6-core 45nm sibling.

Doesn't mean the 8350 is superior, just given advantages that the thuban core was never afforded.

None of that hypothetical stuff is relevant though, that is fair to say. All that matters is what you (or I) can buy right now. And my 8350 is definitely a performance beast compared to a 1100T! Spent less on it too What's not to like?
4FP units (more flexible though) Vs 6FPunits and still better throughput (much better if FMA is used). Slimmer integer core but still providing equal if not better performance (due to better branch prediction,scheduling,prefetchers etc.). PD concept is fine and AMD is just refining it more going to SR and EX.
 

Idontcare

Elite Member
Oct 10, 1999
21,118
59
91
4FP units (more flexible though) Vs 6FPunits and still better throughput (much better if FMA is used). Slimmer integer core but still providing equal if not better performance (due to better branch prediction,scheduling,prefetchers etc.). PD concept is fine and AMD is just refining it more going to SR and EX.

Refining it is fine, that is the less expensive option to be sure.

But will refining it ever get them close to being on-par with Intel at whatever time they release their respective refinements?
 

Vesku

Diamond Member
Aug 25, 2005
3,743
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86
Given the node disparity, is it realistic to expect to be at par with Intel at all?
 

Ajay

Lifer
Jan 8, 2001
16,094
8,106
136
That they wouldn't have half or more of the company telling them they have an opportunity is the WTF part. Before reading that article, and doing some more checking to make sure it wasn't just that writers spin, I just assumed they had plans to have jaguar in dense server plans. Wouldn't they have those plans going all the way back to the first canceled Brazos refresh? Apparently they didn't and that's sad.

Well, it's just become official now. I'm sure they've worked on their plans for a while before announcing this. They needed to get a sense of whether Jaguar would be a capable server CPU before they could proceed - and they would have needed silicon before they could get some answers. Server CPU must pass a more rigorous verification regime and Jaguar wasn't designed to be a server capable CPU from the start. IMHO.
 

AtenRa

Lifer
Feb 2, 2009
14,003
3,361
136
They should have, and eventually they did. Both Willamette and Prescott were "unmitigated failures".

It took Intel 6 Years to change its micro-architecture from P4 to Core (2000 to 2006). Also, Pentium 4 Prescott 2.4A was one of the best CPUs when OCed, i still have one that could do 3.7GHz on air. And they sold millions of units, you cant say the same for the Bulldozer (the product) family of CPUs.

The PIII would have been better, but still not enough to best AMD's Athlon XP and eventual K8-based X2.

Very similar to the K10 -> Bulldozer situation IMO.

I dont thing so, have a look at Llano vs Trinity/Richland. Llano loose in the majority of apps while being an evolved K10 design in the same 32nm process.

Intel had enough cash, and time, to correct their error and bring Core2 to the market. I don't know if AMD has that kind of time or money to correct their bulldozer mistake.

The Bulldozer (the products) is a mistake because they were released prematurely. The Bulldozer micro-architecture is not a mistake, its the best micro-architecture AMD had to this day and they have to keep pushing it all the way it can take.
 

Ajay

Lifer
Jan 8, 2001
16,094
8,106
136
Refining it is fine, that is the less expensive option to be sure.

But will refining it ever get them close to being on-par with Intel at whatever time they release their respective refinements?

Well, whoever made the decision to go with CMT and 8 cores instead of SMT with 4/6 core really put AMD in a bad position. But with enough xtors, there is plenty of improvements to be made. Some where tossed around in the thread with the supposed die shot of Kaveri.

Given the node disparity, is it realistic to expect to be at par with Intel at all?

Well, as above, AMD could match Intel on performance with more xtors and a higher TDP @ N-1 in a couple of iterations. At N-2, the power/performance difference will be too high for anyone except die-hard AMD fans, IMHO. Also, larger dies mean lower margins, but AMD is being configured as a lower margin business.

GFL is the albatross around AMD's neck right now. They need to hire many, more experienced process engineers (probably at every level) if they plan on staying close to the bleeding edge. It's possible that they've decided not to do that D: I hope the later isn't the case for AMD's sake.
 
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Exophase

Diamond Member
Apr 19, 2012
4,439
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81
Consequently they aren't all too keen on x86 either I take it, as in they see ARM giving more perf/watt than x86 as it stands today, but if they are able to tweak Cortex-A57 just enough to waltz Intel then we might see a stronger resurgence in the server market for AMD !

I could see Cortex-A57 offering better perf/W for its performance targets than Jaguar does. That doesn't mean it's because one is ARM and the other is x86. For processors of this class it will only make a small difference. I doubt they'll change A57's design (the soft-macro they'd license, ie at the RTL level) at all, but the physical design is up to them.

Assuming they do use an A57, and they probably will, it'll be interesting to see how their implementation and the rest of the fabric and peripherals stacks up against other A57 SoCs.
 

erunion

Senior member
Jan 20, 2013
765
0
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The Bulldozer (the products) is a mistake because they were released prematurely. The Bulldozer micro-architecture is not a mistake, its the best micro-architecture AMD had to this day and they have to keep pushing it all the way it can take.

It was delayed an entire node.

That's also a fallacy. Even if we grant that its the best micro-arch they've ever had, it doesn't validate its existence. Its still a failure if AMD could have made an even better design if they had gone a different route.
 

BUnit1701

Senior member
May 1, 2013
853
1
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It was delayed an entire node.

That's also a fallacy. Even if we grant that its the best micro-arch they've ever had, it doesn't validate its existence. Its still a failure if AMD could have made an even better design if they had gone a different route.

But they dont have 5-7 years to go a different route, what they have is what they have.
 

pablo87

Senior member
Nov 5, 2012
374
0
0
It really was an unmitigated disaster:

A, you boast of having this small module while having a huge overall die size.

B, you saved a lot of module die size by sharing resources, unfortunately it translated into a little $ saved, a not insignificant performance penalty, and a big loss on ASP and market share.

C, you burden your customers and chipset group with the cost of supporting 2 sockets.

D, overall thinking is minimizing die size/core even though the WSA makes incremental die basically free.

Reading between the lines on these forums, AMD is actively addressing these issues. Its unlikely to help the overall market grow again but it should stabilize share and raise ASP's.
 

erunion

Senior member
Jan 20, 2013
765
0
0
33% more cores and an entire process node advantage when it comes to clockspeeds and power consumption...one would hope an 8-core 32nm CPU could best its older 6-core 45nm sibling.

Doesn't mean the 8350 is superior, just given advantages that the thuban core was never afforded.

It was afforded that advantage in Llano.

Llano vs Trinity is what really rubbed in the uarch advantages(or lack there of). 4 32nm Star cores vs 2 32nm Piledriver Modules.



 

NTMBK

Lifer
Nov 14, 2011
10,269
5,134
136
It was afforded that advantage in Llano.

Llano vs Trinity is what really rubbed in the uarch advantages(or lack there of). 4 32nm Star cores vs 2 32nm Piledriver Modules.




Those benchmarks are hardly indicative- Trinity in general outperformed Llano quite handily.

http://www.anandtech.com/bench/Product/399?vs=675

(Yes yes, that is the A8-3850 instead of the A8-3870K, but that is what there are benchmarks for in the database- and there is a mere 100MHz clock speed difference between them, anyway!) There are still a few cases where Llano wins out, but in general Trinity is a clear win.
 
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Sequences123

Member
Apr 24, 2013
34
0
0
The Bulldozer micro-architecture is not a mistake, its the best micro-architecture AMD had to this day and they have to keep pushing it all the way it can take.

How do you determine if a micro-arch is good or not?

I realize this is a very open-ended question and can afford simple answers such as: "it does <list of things> better than <stuff>". But that's like saying car A is better than car B because it has better MPG or better handling or stuff like that. What I'm interested in is: what makes it better? Why is it better?
 

NTMBK

Lifer
Nov 14, 2011
10,269
5,134
136
How do you determine if a micro-arch is good or not?

I realize this is a very open-ended question and can afford simple answers such as: "it does <list of things> better than <stuff>". But that's like saying car A is better than car B because it has better MPG or better handling or stuff like that. What I'm interested in is: what makes it better? Why is it better?

Its all about the use cases. Do you want a CPU that will absolutely beast Starcraft? Or would you very quickly like to convert a movie from time to time? Would you like to use as little power as possible running a web server 24/7? Or do you want to do some CPU rendering?

Your usage determines what is a "good" uArch. Intel and AMD have to try to balance their choices to satisfy the largest number of consumers, many years in advance.
 

insertcarehere

Senior member
Jan 17, 2013
639
607
136
Those benchmarks are hardly indicative- Trinity in general outperformed Llano quite handily.

http://www.anandtech.com/bench/Product/399?vs=675

(Yes yes, that is the A8-3850 instead of the A8-3870K, but that is what there are benchmarks for in the database- and there is a mere 100MHz clock speed difference between them, anyway!) There are still a few cases where Llano wins out, but in general Trinity is a clear win.

Correct me if I am wrong, but wasn't Llano fabricated on an immature 32nm Glofo process, which badly affected yields and maybe performance? While when trinity was launched, the process should have been much more mature, so performance advantages may just reflect that trinity was built on a more mature process.
 

NTMBK

Lifer
Nov 14, 2011
10,269
5,134
136
Correct me if I am wrong, but wasn't Llano fabricated on an immature 32nm Glofo process, which badly affected yields and maybe performance? While when trinity was launched, the process should have been much more mature, so performance advantages may just reflect that trinity was built on a more mature process.

Quite possibly- although its hard to tell. If the process was really that buggy I would have expected a steady drip of faster SKUs over time, the way we used to see in the Pentium 3 and 4 era- the same chip, but clocked higher due to process improvements. But the only thing we saw was the 3% increase from the 3870k, which is basically nothing at all. If AMD could have clocked the same part significantly higher after a year then I expect that they would have.
 

AtenRa

Lifer
Feb 2, 2009
14,003
3,361
136
It was delayed an entire node.

And still it was an unfinished product, look how much better the Vishera is with just minor tweaks.

That's also a fallacy. Even if we grant that its the best micro-arch they've ever had, it doesn't validate its existence. Its still a failure if AMD could have made an even better design if they had gone a different route.

Don’t Judge the architecture by the end-product, if you had the Vishera in 2011(against SandyBridge) then nobody would be talking about a failure today.
 

MisterMac

Senior member
Sep 16, 2011
777
0
0
And still it was an unfinished product, look how much better the Vishera is with just minor tweaks.



Don’t Judge the architecture by the end-product, if you had the Vishera in 2011(against SandyBridge) then nobody would be talking about a failure today.


And if we had Sandy Bridge against Phenom 1 - AMD would be bankrupt today.
TTM and the time factor cannot just be discarded - that's jut assinine.

Not that i expect you to follow logic - but come on.
Bulldozer was a failure in that it failed to reach it's targets - so much that it's original introduction was cancelled because the first tape outs probably showed "poo poo grandiose".

If everyone had unlimited time - any base design system\concept of can be tweaked to goodness eventually.

By that standard - I'll claim Netburst is the best uARCH ever.
No one would complain about it it had launched in 95 instead of Pentium Pro\p6.
 

AtenRa

Lifer
Feb 2, 2009
14,003
3,361
136
The performance is exceptional at things the users of the chip won't do. Seriously, there are parts of the server market where OpenCL performance will be very nice to have, but the seamicro customers are not them. What they want is something that runs PHP, Python and Ruby well at low cost, and hell will freeze over before OpenCL will either accelerate any of those tasks or the customers will expend the engineering resources to use OpenCL directly. (The decision to base your business on scripting languages is based on the idea of reducing programming costs. OpenCL costs a lot to program for.)

Obviously it’s not recommended for Webhosting servers, but you can use the APUs for Data centers, Cloud servers and HPC were using OpenCL helps a lot. GPU Accelerated DataBases

Take a seamicro SM-15000 Chassis, you can feet 64 Computing cards and each card can have 4 AMD Kabini SoCs with 4 x86 cores and 128 GCN cores. Now that will be 1024 Jaquar x86 Cores plus 32768 GCN cores, and all that in just 10RU space.

 

nemesismk2

Diamond Member
Sep 29, 2001
4,810
5
76
www.ultimatehardware.net
They should have, and eventually they did. Both Willamette and Prescott were "unmitigated failures".

The PIII would have been better, but still not enough to best AMD's Athlon XP and eventual K8-based X2.

Very similar to the K10 -> Bulldozer situation IMO.

Intel had enough cash, and time, to correct their error and bring Core2 to the market. I don't know if AMD has that kind of time or money to correct their bulldozer mistake.

I liked all of my AMD Athlon XP CPUs from the Athlon XP 2500 and Athlon XP 3200
 

Ancalagon44

Diamond Member
Feb 17, 2010
3,274
202
106
The Bulldozer (the products) is a mistake because they were released prematurely. The Bulldozer micro-architecture is not a mistake, its the best micro-architecture AMD had to this day and they have to keep pushing it all the way it can take.

AMD Defense Force, Go!

It was release prematurely after what, 6 years in development?

Even AMD says it was a failure, and you disagree?
 
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