Tom's Hardware: Topic Multi-core Opteron confirmed, plus some tidbits
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<A HREF="http://www.theregister.co.uk/content/61/33429.html" target="_new">http://www.theregister.co.uk/content/61/33429.html</A>
| Quote : No surprise there. Chairman Jerry Sanders, speaking at September's European Athlon 64 launch, said it's "inevitable that we'll have multiple cores on a single chip". Indeed, at the same event, his engineering colleagues revealed that the architecture on which the Athlon 64 is based - and the Athlon 64 FX and Opteron processors, for that matter - was designed from the ground up to support two cores on the same die.
|
Looks like you were right BB! It should be easy to implement. Oh and gotta give pointers to Sanders. I just like the guy's aggressive attitude. Wish he still was the big guy for AMD.
Another thing, it's interesting to see how AMD is finally issuing press releases with confidence, like big companies do. I find that new and refreshing in a way. It might have to do with how they treat the server market, like other companies, by being open. It's a good thing anyways and helps their rep to spread.
| Quote : Curiously, that's the same timeframe the company is believed to have specified for the release of dual-core Opterons, suggesting that K9 is simply 'K8', the architecture on which today's Opterons and Athlon 64s are based, with the second core in place. |
I don't like that one bit. That's no way to call a "new" core architecture model that. K7 to K8 was acceptable at best, but K8 to K9 with multicore is a no-no to me.
| Quote : Weber also said that AMD is exploring its own implementation of simultaneous multi-threading (SMT) technology, a technique already implemented by Intel (as HyperThreading) in Pentium and Xeon products, and soon by IBM in its Power 5 chip. Weber's Microprocessor Forum keynote acknowledged that chip designers in the future will look to multiple cores each processing multiple threads, which is probably as close to a 'we're going to do it too' statement as we're likely to get right now. When chip makers speak about the industry generically, they tend to be thinking about themselves. |
To state what I had said once months ago on this one: AMD derided HT. Few months later you'll see them going: "AMD SMT is the latest breakthrough in modern technology with unrivaled logic performance that delivers unparalleled performance for the most demanding users. AMD is proud to be ahead of the race with AMD SMT!"
| Quote : However, Weber gave no indication as to when SMT might appear in an AMD processor, or whether that chip will be K9. |
I sincerly hope soon. They still got heat to spare.
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Don't you feel that chip is somehow not too hot really?
I dunno, the packaging seems like it is sturdy and heat resistant as well as able to cool. Just a visual feeling.
I wanted to add, that though AMD hasn't impressed me much in the core architecture, their outside push is pretty interesting and daring. It just might be innovative. So who started the multicore desktop race?
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>Looks like you were right BB!
Hey, what a surprise :| When was the last time I was wrong anyway 
?
>I don't like that one bit. That's no way to call a "new"
>core architecture model that. K7 to K8 was acceptable at
>best, but K8 to K9 with multicore is a no-no to me.
Oh this is so hmm... nonsensical. K7 to K8 was a complete remake of the chip. Sure the floorplans looked very similar, but when you'd delve a bit deeper, you'd see nearly everthing was redone from the ground up. K6 was brand new, K7 was completely new, K8 was a complete overhaul with tons of additions and novelties (SOI, HT, AMD64, Integrated MC, ..)
Now, compare that to intel. Ppro->P2->P3.. from 166 MHz to 1.4 GHz with basically the same design. From 1995 to 2003 (the P6 core still lives in mobile Celerons). Even Banias isnt too different, and is probably closer to the original PPro than hammer is to the K7.
Then, there next new core: P7 from 2000 to >2004 (prescott) still pretty much the exact same core.. just HT that has been activated and tweaked and cache improvements. Nothing any more major then eg original Athlon(forgot its code name)->tbird->palomino->barton
K8 is a great core, if indeed K9 is a copy conform with some tweaks and dual core (which I doubt), that would still be great IMHO. After all, Hammer is designed for around the 0.09 node just like the P7 core was optimized for the .13 node and the K7 for the .18 node.
>To state what I had said once months ago on this one: AMD
>derided HT. Few months later you'll see them going: "AMD
>SMT is the latest breakthrough in modern technology with
>unrivaled logic performance that delivers unparalleled
>performance for the most demanding users. AMD is proud to
>be ahead of the race with AMD SMT!"
HT is a fine technology, but its complicated and mostly benefits long pipeline designs. I doubt AMD would get anywhere near the speedups the P4 (more specifically the Xeon) enjoys. It isnt/wanst a priority for them, they went other ways to keep the pipeline filled and reduce the cost of pipeline stalls (like integrating the memory controller). When will we finally see intel include an ondie MC ? Especiaclly for the Itanium, I really don't understand why they don't
= The views stated herein are my personal views, and not necessarily the views of my wife. =
| Quote : Oh this is so hmm... nonsensical. K7 to K8 was a complete remake of the chip. Sure the floorplans looked very similar, but when you'd delve a bit deeper, you'd see nearly everthing was redone from the ground up. K6 was brand new, K7 was completely new, K8 was a complete overhaul with tons of additions and novelties (SOI, HT, AMD64, Integrated MC, ..)
|
"sigh", you're entitled to your view I guess... 
| Quote : HT is a fine technology, but its complicated and mostly benefits long pipeline designs. I doubt AMD would get anywhere near the speedups the P4 (more specifically the Xeon) enjoys. |
How do you figure?
HT is most certainly better suited for the K8. The ability to have such a fast transfer of data to the core, but most importantly, the amount of IPC it has, is most optimum. AMD will have to work hard improving the prefetching first, but HT is almost guaranteed to run better on the K8. Mainly because of the IPC amount. Out of the 9, an average would be 2-3 per clock. There was a report on encoding which revealed the P4 with SSE2 was doing about 0.5 IPC, and the Athlon a bit more.
I have no doubt HT is something, that if well optimized for, can do wonders on the K8 design. But it'd likely increase heat too much.
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Juin!
Welcome back!
I thought you said you wouldn't come back. Heheh, if Spud isn't here to make the Intel PR, there's always you man.
So I am wondering here, what are your thoughts on all this? Did the Athlon 64 FX surprise you? And Intel's troubles lately?
What do you foresee?
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