Bulldozers Weak/Strong points?

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drizek

Golden Member
Jul 7, 2005
1,410
0
71
I'll stick up for idc. Xeon 32nm still has a lot of fight left in it. saying that phenom at 45 is better than westmere and sandy bridge at 32 is quite a stretch.

You shouldn't brag about being so uncompetetive that your competition isn't even willing to cut into their margins to offer better price/performance than the chips you sell at break even(if that) prices.

Realistically, AMD is hoping to catch up at 32 and benefit from a couple of months of competitiveness before intel dumps ib on them at 22nm.
 

jimbo75

Senior member
Mar 29, 2011
223
0
0
That's not what he said. The fact is AMD can match intel at performance per watt in servers when being a whole node + HKMG down.

Sure intel could MCM those Xeons but where is the extra 100W+ of power going?
 

Idontcare

Elite Member
Oct 10, 1999
21,110
59
91
That's not what he said. The fact is AMD can match intel at performance per watt in servers when being a whole node + HKMG down.

Sure intel could MCM those Xeons but where is the extra 100W+ of power going?

I've posted this time and again in these forums, in support of AMD's decision to not go HKMG at 45nm.

Not sure why people are getting their noses out of joint just because I gave John a little friendly ribbing up above. (personal note, John still has a job in this industry, I do not, the depths of my own denigration far exceed that of wherever I was joshing with John over)

Yeesh, this internet is serious business to some folks I guess :\
 

Idontcare

Elite Member
Oct 10, 1999
21,110
59
91
You mean like attempting to make a career out of selling server gear for a company that steadily loses server market share?

John if you recieved this to be anything other than friendly joshing then I sincerely apologize, it was not meant to be an insult or anything of that nature. Given that so many others here found it offensive on your behalf, I apologize in advance if you took it as such as well. That was so totally not the intent, I had a smile on my face when I wrote it thinking you'd get a chuckle out of the irony and nothing more, if I failed in that endeavour then that was my bad :roses:
 

Cerb

Elite Member
Aug 26, 2000
17,484
33
86
But wasn't that Sun's strategy with their Niagara processors, lots of weak cores to maximize throughput?
A lot of threads over a much smaller number of cores (8C/64T for the T2). As an SoC with server features and RAS to boot, it's been pretty efficient, given what it can do. If Oracle would offer cheaper servers, and improve Linux support, it could get pretty wide use (not that Oracle would ever even dream of doing that, of course!).

Tilera's Tile-Gx might be a better example of tons of cores for parallel work.
 
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drizek

Golden Member
Jul 7, 2005
1,410
0
71
That's not what he said. The fact is AMD can match intel at performance per watt in servers when being a whole node + HKMG down.

Sure intel could MCM those Xeons but where is the extra 100W+ of power going?

I don't know too much about servers, but I think the idea is that AMD can cram more cores in a rack and get performance/watt down by needing less memory/motherboards/etc. But Intel is going to start building bigger and faster Xeons and AMD will lose the core density advantage before long, at least until BD comes out.

The server market is definitely much rosier for AMD than the desktop one, that's for sure.
 

Accord99

Platinum Member
Jul 2, 2001
2,259
172
106
That's not what he said. The fact is AMD can match intel at performance per watt in servers when being a whole node + HKMG down.

Sure intel could MCM those Xeons but where is the extra 100W+ of power going?
Why wouldn't Intel do the same thing as AMD and use LV Xeons that are significantly clocked lower from the top achievable clock speeds. A pair of 2.26GHz Westmere Xeons would fit into a 130W TDP.
 

drizek

Golden Member
Jul 7, 2005
1,410
0
71
They are. Sandy Bridge Xeons will allow 4x8core configurations. AMD has 4x12 now and will have 4x16 with Bulldozer.
 

jimbo75

Senior member
Mar 29, 2011
223
0
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Why wouldn't Intel do the same thing as AMD and use LV Xeons that are significantly clocked lower from the top achievable clock speeds. A pair of 2.26GHz Westmere Xeons would fit into a 130W TDP.

They'd cost a lot more than the normal Xeons while performing a lot worse in low threads as you mentioned in your last post. They might perform slightly better than MC overall, that's difficult to say for sure but at such a prohibitive cost I very much doubt there would be a market for them.
 

formulav8

Diamond Member
Sep 18, 2000
7,004
522
126
John if you recieved this to be anything other than friendly joshing then I sincerely apologize, it was not meant to be an insult or anything of that nature. Given that so many others here found it offensive on your behalf, I apologize in advance if you took it as such as well. That was so totally not the intent, I had a smile on my face when I wrote it thinking you'd get a chuckle out of the irony and nothing more, if I failed in that endeavour then that was my bad :roses:

Thats very good of you. :thumbsup:

I may not know the situation between you two but that just seemed wierd the way it 'appeared'. So hopefully he will understand it the way you 'intended' your comment to mean.



Jason
 
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Accord99

Platinum Member
Jul 2, 2001
2,259
172
106
They'd cost a lot more than the normal Xeons while performing a lot worse in low threads as you mentioned in your last post. They might perform slightly better than MC overall, that's difficult to say for sure but at such a prohibitive cost I very much doubt there would be a market for them.
They cost that much because of current market segmentation. When 6-core Opteron EEs were released, they were significantly more expensive than regular 6-core Opterons.

My point is this AMD strategy can be duplicated by Intel relatively easily since it's basically the same strategy of what both have done for the last several years; which is to throw more cores into a CPU and run the cores at less than maximum achievable clock speed to get higher throughput at the same power use level. But Intel's current process and core design advantage means that AMD must use a lot more lower-clocked cores to achieve comparable throughput at the same power levels.
 

Zap

Elite Member
Oct 13, 1999
22,377
7
81
Bulldozer strong point - It gives people hope for the future.

Bulldozer weak point - It isn't available yet.
 

jimbo75

Senior member
Mar 29, 2011
223
0
0
My point is this AMD strategy can be duplicated by Intel relatively easily since it's basically the same strategy of what both have done for the last several years; which is to throw more cores into a CPU and run the cores at less than maximum achievable clock speed to get higher throughput at the same power use level.

Yet there is no indication of intel doing that this time around, they are relying on IB being able to beat BD which is what John said was risky.


But Intel's current process and core design advantage means that AMD must use a lot more lower-clocked cores to achieve comparable throughput at the same power levels.
But that's not the whole story, because MC is superior when the software actually makes use of the extra cores.



When the software is in place the Xeon's 12 faster cores + HT can't compete with 24 "real" cores. There are obviously other factors to consider but on a pure hardware level MC is every bit as good as Xeon on perf/watt.
 
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Cerb

Elite Member
Aug 26, 2000
17,484
33
86
When the software is in place the Xeon's 12 faster cores + HT can't compete with 24 "real" cores. There are obviously other factors to consider but on a pure hardware level MC is every bit as good as Xeon on perf/watt.
...but only if you need those extra cores, and it's not like the Xeons lost by much. While server performance tends to scale out better, there is a growing portion of servers that are powerful enough, and for which an upgrade need not have tons of cores. Or, they are bound by storage/network resources, rather than CPU threads, RAM, etc.. Often, for these, Intel offers better CPUs for the money, right now, because the extra cores would just go to waste. Props to AMD for getting server chips not costing an arm and a leg, but when even 8 real cores is planning for the distant future, and could let you skip an upgrade cycle, Intel's got compelling offerings.

If AMD can pull of results with BD like can be seen in research--big if--they could be able to offer both more cores at good prices and modest power, and good enough performance on a single thread for high core count to not be the thing they can give, over Intel. Not much longer, before we find out...
 

Accord99

Platinum Member
Jul 2, 2001
2,259
172
106
But that's not the whole story, because MC is superior when the software actually makes use of the extra cores.

When the software is in place the Xeon's 12 faster cores + HT can't compete with 24 "real" cores. There are obviously other factors to consider but on a pure hardware level MC is every bit as good as Xeon on perf/watt.
And there are other highly threaded and scalable benchmarks like SAP-SD and Cinebench 11.5 where the Xeon's per core advantage is enough to overcome the core count deficit.

Intel's process and design advantage right now allows Intel to use significantly fewer cores to have roughly the same maximum throughput as AMD. There's nothing to stop Intel from using the same advantage to use more lower-clocked cores to gain throughput at the expense of some per-core performance.
 

jimbo75

Senior member
Mar 29, 2011
223
0
0
And how much closer to the Xeons would MC be if it just had turbo for lower threaded apps? This is the thing, BD is going to remove all of intels advantages and stuff like turbo is basically just going to be a gain for AMD.
 

formulav8

Diamond Member
Sep 18, 2000
7,004
522
126
Its also sad that no one knows hardly anything more about bd than when this thread was started. :thumbsdown:

I would like to see the nda that AMD gave out to their partners...
 

jimbo75

Senior member
Mar 29, 2011
223
0
0
Just have to face up to it, AMD is extremely competent at stopping leaks these days. Since Evergreen in fact, almost nothing has been known before any major release.
 

JFAMD

Senior member
May 16, 2009
565
0
0
But you don't have the same performance profile. You only have roughly comparable throughput if the customer uses enough threads to push every core. Otherwise, the Xeon is going to be faster. The fewer the cores needed to hit a certain theoretical throughput, the better that CPU is going to be in actual use.


I wouldn't bet on the strategy that requires twice the cores and three times the die size to match the theoretical throughput of my competitors products and a strategy that my competitor could easily adopt and leave me with no other response... than maybe to slow down my cores further and double up their count again?

But wasn't that Sun's strategy with their Niagara processors, lots of weak cores to maximize throughput?

There are different philosophies areound processors. Big cores with HT or a larger number of smaller cores. We each have chosen our strategy. I have never said that our strategy addresses every single server workload.

More cores address virtualization, cloud, database, web and HPC. I am not necessarily going to be the best choice for a standalone exchange server. But, guess what. All of those applications that don't scale well are getting virtualized. So, essentially, as virtualization and clould continue to grow, so does my opportunity.

There will always be a set of applications that you are not going to choose my processor for, but when you look at the estimates of where growth in the server market is, you see more cores being a better option.

If more cores was a bad choice, then why is intel continuing to ratchet up their core counts? Are they stupid? No.

The argument of "the applications need to be able to take advantage of the cores" is great if you are a gamer running a single threaded first person shooter, but that is not the server market.

Analysts are expecting ~40-50% of the workloads to be virtualized by next year (sitting on ~20% of the physical servers). HPC is 8-10% of the market. Cloud will be ~20%. Database is ~10-12%. Web is another ~15-20%.

So, I guess there is only ~75% of the market that I have access to. Given the fact that I am the #2 player in the market I would rather go after the 75% of the market then the 25% that wants fewer high clock speed cores. Expecially because that 25% keeps getting smaller.

There are so few quads sold in the server market today that you'll be hard pressed to see server parts with core counts like that in the future.
 

Idontcare

Elite Member
Oct 10, 1999
21,110
59
91
There are different philosophies areound processors. Big cores with HT or a larger number of smaller cores. We each have chosen our strategy. I have never said that our strategy addresses every single server workload.

More cores address virtualization, cloud, database, web and HPC. I am not necessarily going to be the best choice for a standalone exchange server. But, guess what. All of those applications that don't scale well are getting virtualized. So, essentially, as virtualization and clould continue to grow, so does my opportunity.

There will always be a set of applications that you are not going to choose my processor for, but when you look at the estimates of where growth in the server market is, you see more cores being a better option.

If more cores was a bad choice, then why is intel continuing to ratchet up their core counts? Are they stupid? No.

The argument of "the applications need to be able to take advantage of the cores" is great if you are a gamer running a single threaded first person shooter, but that is not the server market.

Analysts are expecting ~40-50% of the workloads to be virtualized by next year (sitting on ~20% of the physical servers). HPC is 8-10% of the market. Cloud will be ~20%. Database is ~10-12%. Web is another ~15-20%.

So, I guess there is only ~75% of the market that I have access to. Given the fact that I am the #2 player in the market I would rather go after the 75% of the market then the 25% that wants fewer high clock speed cores. Expecially because that 25% keeps getting smaller.

There are so few quads sold in the server market today that you'll be hard pressed to see server parts with core counts like that in the future.

Basically comes down to server vs. workstation markets.

Server - give us a CPU that can service/retire a bajillion threads in a high throughput environment because not only do we have multi-threaded apps but we are multi-tasking those multi-threaded apps thanks to virtualization.

Workstation - give us a CPU that has a moderate amount thread capability (around 8-12 cores/threads will suffice) but really good single-threaded performance because we intend to run just one CPU-bound multi-threaded app (CAD, rendering, simulation, etc) at a time which the engineer needs to finish in as little time as possible so they aren't sitting on their thumbs or surfing facebook for too much of their salaried day. (we don't really intend to have the engineer multi-task multi-threaded apps, and we block youtube at work so they are rather bored when the hourglass is turning)
 
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