[Beowulf] More AMD rumors

Robert G. Brown rgb at phy.duke.edu
Mon Nov 19 10:24:08 PST 2012


On Mon, 19 Nov 2012, Douglas Eadline wrote:

> Intel has a single socket Xeon (E3-12XX series Sandy/Ivy-Bridge)
> and will work on single socket motherboards. Mostly designed for
> the small office/home server these have more "server" features,
> basically ECC, and cost slightly more than the i-5/7 series. They
> are lower power as well.

But are they faster?

    rgb

>
> --
> Doug
>
>>
>> Comments from anyone else?
>>
>>     rgb
>>
>>>
>>>> I would have hoped that AMD would dig in an innovate and
>>>> regain at least parity if not the lead, because it is good for the
>>>> industry for Intel to have serious competition, but while Intel could
>>>> make money and survive as second best to AMD, AMD can't make any money
>>>> as second best to Intel...
>>>
>>> We must split of course the 2 worlds of HPC performance.
>>> In fact htere is 3 but let's do a rough 2 world division
>>>
>>> a) floating point or vectorized performance (can be integers as well)
>>>
>>> We skip A : the manycores have won there.
>>>
>>> b) integer performance non-vectorized
>>>
>>> For integers and branches if i take a huge program like Diep.
>>>
>>> http://www.lostcircuits.com/mambo//index.php?
>>> option=com_content&task=view&id=105&Itemid=42&limit=1&limitstart=13
>>>
>>> More is better.
>>>
>>> i7-3960X-EE : 2.0 Million chess positions a second   (12 logical cores)
>>> i7-980x turbo: 1.85 Million chess positions a second (12 logical cores)
>>> i7-3770k:         1.47 million chess positions a second (8 logical
>>> cores)
>>> AMD Phenom X6 1100T : 1.34 million chess positions a second (6 cores)
>>> AMD Phenom X6 1090T : 1.30 million chess positions a second (6 cores)
>>> FX-8150 : 1.22 million chesspositions a second (8 mini cores)
>>>
>>> The FX-8150 is AMD's latest 'bulldozer' CPU.
>>>
>>> The problem is the new generation FX-8150 at a NEW process
>>> technology, with 2 billion transistors or so (caches counted
>>> - the initial press release from AMD - not the later one where they
>>> creatively not counting things reached 1.2 billion)  is not beating
>>> their own old design.
>>>
>>> Furthermore another big problem is power usage.
>>>
>>> http://www.lostcircuits.com/mambo//index.php?
>>> option=com_content&task=view&id=105&Itemid=42&limit=1&limitstart=6
>>>
>>> Under full load:
>>>
>>> Phenom X6 1090T : 69.6 watt,
>>> Phenom X6 1100T : 92 watt
>>>
>>> We see how the 1100T already was clocked a tad too high by AMD, which
>>> explains the huge power increase.
>>>
>>> Now the FX-8150 : 115.2 watt
>>>
>>> As if Law of Moore garantueeing progress doesn't exist...
>>>
>>> As for you, in many benchmarks you did do maybe multiplication was
>>> important. Each minicore has its own multiplication unit.
>>> Sounds good huh?
>>>
>>> So far the good news: the problem is: it's also over 2 times slower
>>> that unit...
>>>
>>> Please note that bulldozer does have AVX. From benchmarks we know
>>> that both intel as well as AMD with this bulldozer,
>>> had tried to optimize performance for game. Games using AVX especially.
>>>
>>> It's not doing bad there in fact. Worse than the quadcore intels. I
>>> don't want a quadcore chip though.
>>> I want a million cores.
>>>
>>>>
>>>>     rgb
>>>>
>>>>>
>>>>> --
>>>>> Doug
>>>>>
>>>>> --
>>>>> Mailscanner: Clean
>>>>>
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>>>>
>>>> Robert G. Brown	                       http://www.phy.duke.edu/~rgb/
>>>> Duke University Dept. of Physics, Box 90305
>>>> Durham, N.C. 27708-0305
>>>> Phone: 1-919-660-2567  Fax: 919-660-2525     email:rgb at phy.duke.edu
>>>>
>>>>
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>>
>> Robert G. Brown	                       http://www.phy.duke.edu/~rgb/
>> Duke University Dept. of Physics, Box 90305
>> Durham, N.C. 27708-0305
>> Phone: 1-919-660-2567  Fax: 919-660-2525     email:rgb at phy.duke.edu
>>
>>
>>
>> --
>> Mailscanner: Clean
>>
>
>
> -- 
> Doug
>
> -- 
> Mailscanner: Clean
>

Robert G. Brown	                       http://www.phy.duke.edu/~rgb/
Duke University Dept. of Physics, Box 90305
Durham, N.C. 27708-0305
Phone: 1-919-660-2567  Fax: 919-660-2525     email:rgb at phy.duke.edu




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