[Beowulf] More AMD rumors

Mon Nov 19 10:39:11 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?

That, I don't know. My guess is they are about the same as
the i7, but provide ECC. You know the die is pretty much the
same on all parts within a family. They blow a few fuses to turn
off capabilities and "bin" the parts based on
thermal performance/clock speed.

BTW, I have an unopened i5-3470S sitting here waiting
for testing. I use the i5 S series (low power 65W) for my Limulus
boxes. There is a 65W i7, but it is a little pricey. In my
experience the Sandy Bridge and now Ivy Bridge provide
incredible performance and would be a hard target for AMD
in any case.

--
Doug
>
>     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
>>>>>>
>>>>>> --
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>>>>>>
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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
>>>
>>>
>>>
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>>> 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
>
>
>
> --
> Mailscanner: Clean
>

-- 
Doug

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