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Qualcomm Not Big on Big.little

Of LTE & NIH syndrome
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maltanar
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Dark Silicon
maltanar   9/9/2013 11:59:53 AM
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I'd not dismiss the big.LITTLE approach, though the challenges in supporting this scheme in software and OS level are far from trivial as pointed out. Using the ever-increasing (but hard-to-power) number of transistors to add more specialized processing cores is also a great approach and easier to support in software/developer level.

There's a great paper called "Is dark silicon useful?: harnessing the four horsemen of the coming dark silicon apocalypse" by Michael B Taylor of UCSD, where two of the "horsemen" (the "dim horseman" and the "specialized horseman") correspond to two of the approaches here. Recommended reading for getting a better feel of what may lie ahead for the processor world.

rick merritt
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Re: Dark Silicon
rick merritt   9/9/2013 12:26:26 PM
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@Maltanar: Thanks for the reference to the relevemt paper. I'd recommned folks check it out and provide their thoughts on it and Murthy's opinions.

docdivakar
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Re: Qualcomm Not Big on Big.little
docdivakar   9/9/2013 1:47:48 PM
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The NIH syndrome not withstanding, there is validity to Mr. Renduchintala's point about core optimization, that too application-specific core optimization where Q certainly knows its turf better than ARM.

@Rick: I too suspect there's debate inside Qualcomm about licensing its cores, it is not just the revenue but proliferation of its technology.

MP Divakar

tpfj
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Damage control after Anand Chandrasekher PR faux pas
tpfj   9/10/2013 11:21:48 AM
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I think this is more about QC putting up a different face of QC to do damage control after Anand Chandrasekher's rather terse dismissal of the opposition's achievements.

rick merritt
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Re: Damage control after Anand Chandrasekher PR faux pas
rick merritt   9/10/2013 5:11:04 PM
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@tp: Thx for the linq!

john-mp
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Choice....
john-mp   9/10/2013 12:02:53 PM
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I see the real message here being choice, the choice to have a big.LITTLE system, a 4PLUS1 system, an aSMP system, or even a good old fashioned basic DVFS/Sleep system.

It wasn't that long ago postings were whether more than 1 CPU could be used... today I have seen 8 cores being used in andriod, agreed these are not all 'big' tasks so whether you provide them a LITTLE cpu, or a cpu running more slowly with aSMP - the software complexity is pretty much the same.

Lets all just be thankfull we don't all need to eat a single DVFS based solution!

NIH, and innovate away!

rick merritt
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Re: Choice....
rick merritt   9/10/2013 5:12:58 PM
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@john-MP: Good point and the choices are only going to get more diverse.

ODMs over in Tawian are upgrading their trifocals trying to figure out which SoC for what system and how to dothe underlying OS tweaks inj Android each one requires! Yeah, it's a new day.

tpfj
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The results are back
tpfj   2/4/2014 1:40:52 PM
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http://www.forbes.com/sites/sharifsakr/2014/02/04/mediatek-gamebench-scores-vs-qualcomm/

 

which is quite interesting in light of this

 

http://www.engadget.com/2013/08/02/qualcomm-anand-chandrasekher-eight-core-processors/

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