Smartphone crunching

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Profile James Sotherden
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Message 1196399 - Posted: 17 Feb 2012, 18:00:24 UTC - in response to Message 1196398.  

The grand assumption with smart phones is that suddenly CPU and GPU technology will suddenly stop advancing. That's hardly evident from current CPU types. Sandybridge and Bulldozer alike. GPU's also are advancing faster than ever before. To say that a smartphone is suddenly going to leapfrog over these technologies is silly. I wouldn't want a smartphone and only use my recently purchased laptop for traveling. The recent inundation of tablets and ipads are pretty much a fad. It's new and every status seeker is out to have the latest greatest gadget regardless of how outrageously its priced or how limited its capability. It looks flash so the little child must have that flashy item. Bah


Thank you skildude, Thats the point that I havent been able to get across in my posts.

At the moment smart phones are weed whackers, And they do a good job at what they were designed to do. My desk top is a chain saw and Boinc is the tree. Me I will cut the tree down with a chainsaw not a weed whacker.

In that kind of analogy I would say this:
Mobile Devices=Weed whacker
CPUs=Push mower
GPUs=Riding mower
Work=Half acre lot of grass

Granted no one wants to do that much work with a weed whacker, but if someone wants to spend the time. Then I don't see why they shouldn't. It is their time to spend.


And I will agree to that. I just never liked the statement that smartphones will be the do all end all for computers. They will not!
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Message 1196404 - Posted: 17 Feb 2012, 18:21:58 UTC - in response to Message 1196399.  

not unless they suddenly come out with smart phones that are the size of Laptops which a tablet is without a keyboard. BTW has anyone noticed the idiocy of owning a tablet then buying a leather case to keep the screen from harm. That's funny because laptops come with that preinstalled and they have that nifty keyboard to work with. Hmmmm seems the gadget became a necessity because it was new and not because it was really needed. Though I do applaud the innovative thinkers got people to spend money on an over priced tablet(laptop without keyboard) and then had the Chutzpah to get them to buy a cover for it.


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Message 1196447 - Posted: 17 Feb 2012, 20:58:20 UTC
Last modified: 17 Feb 2012, 20:59:37 UTC

I agree with skildude, Jame and hal9000 and Mark
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Message 1196456 - Posted: 17 Feb 2012, 21:19:36 UTC - in response to Message 1196359.  
Last modified: 17 Feb 2012, 21:20:29 UTC

The grand assumption with smart phones is that suddenly CPU and GPU technology will suddenly stop advancing. That's hardly evident from current CPU types. Sandybridge and Bulldozer alike. GPU's also are advancing faster than ever before. To say that a smartphone is suddenly going to leapfrog over these technologies is silly. I wouldn't want a smartphone and only use my recently purchased laptop for traveling. The recent inundation of tablets and ipads are pretty much a fad. It's new and every status seeker is out to have the latest greatest gadget regardless of how outrageously its priced or how limited its capability. It looks flash so the little child must have that flashy item. Bah


Not to say smartphones are going to leap over larger form factor computers, but I think if you look at technology trends, the focus going into the future is going to be a lot more about minimizing power consumption rather than increased performance. Just look at upcoming Intel Ivy Bridge CPU's--the top TDP bins have dropped down to 77W from current 95W Sandy Bridges, and current leaks only show marginal gains in stock frequency and IPC. Looking further ahead there is Haswell, which continues to incorporate more power saving features important for portable devices. Mainstream CPUs have not seen a "Moore's law"-like increase in core counts because the need for it is not there in the typical desktop market.
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Message 1196462 - Posted: 17 Feb 2012, 21:44:03 UTC - in response to Message 1196456.  

I think you mistake Moore law with the inability to make a CPU that is thermally stable without massive HSF or Watercooling. Current trends are to keep the HSF size as is for stock use. After market HSF/Watercooling allows users a much higher CPU speed. Likewise the reduction in current running through a processor is necessary because of the decreasing size of circuitry on a chip which has ever decreasingly sized of the space between the micro circuitry. So decreasing voltage and power is a logical progression to solve a problem.


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Message 1196478 - Posted: 17 Feb 2012, 22:11:49 UTC - in response to Message 1196462.  
Last modified: 17 Feb 2012, 22:12:48 UTC

I think you mistake Moore law with the inability to make a CPU that is thermally stable without massive HSF or Watercooling. Current trends are to keep the HSF size as is for stock use. After market HSF/Watercooling allows users a much higher CPU speed. Likewise the reduction in current running through a processor is necessary because of the decreasing size of circuitry on a chip which has ever decreasingly sized of the space between the micro circuitry. So decreasing voltage and power is a logical progression to solve a problem.


Reducing the TDP to 77W is not because keeping it the same would have not been technically feasible. From AnandTech review:


I would say the reduction in TDP is the main reason why the specifications (not performance) are so similar to Sandy Bridge. If Intel had kept the 90W TDP, higher frequencies would have been likely and we might have even seen a hex-core part without a loss in frequency...


The driver for reducing TDP is almost certainly about having sufficient market demand for such a hex-core chip vs. a similarly performing chip that's significantly more energy efficient.
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Message 1196509 - Posted: 17 Feb 2012, 23:33:32 UTC
Last modified: 17 Feb 2012, 23:36:45 UTC

In 3 years desktops would die down to half billion, laptops would die down too while smartphones most likely jump to 3 billion. This is what Boinc community should be aware of it. At that time total smartphones might reach 1-2 petaflop of power or more no one can deny.
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Message 1196525 - Posted: 18 Feb 2012, 0:05:27 UTC - in response to Message 1196509.  

In 3 years desktops would die down to half billion, laptops would die down too while smartphones most likely jump to 3 billion. This is what Boinc community should be aware of it. At that time total smartphones might reach 1-2 petaflop of power or more no one can deny.

Phones won't be crunching they will be talking sending text getting on the web etc but not crunching and it will not be the death of the pc you are simply silly so it like saying a horse is better than a car.
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Message 1196542 - Posted: 18 Feb 2012, 0:53:31 UTC - in response to Message 1196509.  

In 3 years desktops would die down to half billion, laptops would die down too while smartphones most likely jump to 3 billion. This is what Boinc community should be aware of it. At that time total smartphones might reach 1-2 petaflop of power or more no one can deny.

I don't know where you get these figures from but from what I've seen desktops for the last 6yrs have remained fairly static (no gaining or loosing) though in the mobile market is where things are very different (I just wish that I could find the 10yr stats that I saw a few weeks back which is why I haven't replied to this thread earlier).

Mobile computing is where things are changing in a big way and its laptops that are now loosing out to tablets and smart phones but people who require full on processing power will always stay with desktops as no other format can provide that.

Sorry Orgil but I find the stats that you've throwing around aren't very accurate but if you want to carry on with that is up to you. There may be 490 million smart phones around but I doubt that very many of those people will want to use them for crunching anything, though it would be interesting to see just how long they will last doing it and if any injuries or accidents happen while doing this (I don't even like the idea of laptops doing this though some people do).

I'm also with skildude, James Sotherden, PaulDHarris, HAL9000 and msattler on this topic, smart phones, and tablets, just aren't designed with this type of use in mind.

Cheers.
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Message 1196549 - Posted: 18 Feb 2012, 1:15:59 UTC - in response to Message 1196542.  

I'm also with skildude, James Sotherden, PaulDHarris, HAL9000 and msattler on this topic, smart phones, and tablets, just aren't designed with this type of use in mind.

I agree too, I see them to be more useful running Non-CPU-intensive applications where they monitor one of their sensors, than all out crunching,

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Message 1196592 - Posted: 18 Feb 2012, 3:04:51 UTC - in response to Message 1196545.  

Because mostly people in this forum are solely desktop generation so for you it is just incomprehensible to accept that something different form of hardwares to take over pc's. It is coming much faster than you sense.


Ok then, take your smart phone (or tablet) and video/sound edit/encode a couple of hours worth while running a fairly large and complex spreadsheet as well as having a couple of browser windows with a few active tabs in each and still chat to your friends at the same time (and I won't even mention doing all this while crunching as well), see how long that takes you (if you even could). I know that this will bring even the best of laptops to their knees (and I won't even mention about running all that over 2-3 monitors just so that you can see everything that's going on). :D

No one believed when thumb/flash drives to take over floppies so fast but it happened.


I certainly wasn't 1 of those people as I welcome new technology. LOL

Cheers.
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Message 1197083 - Posted: 18 Feb 2012, 23:16:34 UTC - in response to Message 1196592.  

I know that this will bring even the best of laptops to their knees (and I won't even mention about running all that over 2-3 monitors just so that you can see everything that's going on).

Sorry for going off topic but have you seen what you can get in a notebook lately? I am not looking for an argument or a debate but my i7 975 lappy is still standing.

Example:
http://www.sagernotebook.com/index.php?page=product_info&model_name=NP9270
Video: Dual Nvidia GeForce GTX 580M GPU 2GB GDDR5
CPU: 2nd Generation Intel® Core™ i7-3960X Processor Extreme Edition (15MB L3 Cache, 3.90GHz, 6 Cores)
Memory: 32GB Quad Channel DDR3 SDRAM at 1333MHz
Storage: RAID-0 3 X Intel 520 Series SATA3 SSD

Most of my farm are notebooks. Sorry I can not run it full bore 24/7 anymore with my fixed income these days but I have an old Alienware notebook that ranked "#62" a few years back. My current Sager i7 975 - GeForce GTX 280M got into the top #100 when I first got it.


...
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Message 1197099 - Posted: 18 Feb 2012, 23:35:39 UTC - in response to Message 1197083.  
Last modified: 18 Feb 2012, 23:36:37 UTC

I know that this will bring even the best of laptops to their knees (and I won't even mention about running all that over 2-3 monitors just so that you can see everything that's going on).

Sorry for going off topic but have you seen what you can get in a notebook lately? I am not looking for an argument or a debate but my i7 975 lappy is still standing.

Sorry but you'll get no argument out of me either but I have tried it doing all that on a mate's Alienware lappy (he just had to brag to much about it beating any desktop) and I did bring it to a slow motion crawl, not to mention that it had to throttle itself down 5 minutes later due to heat (my 2500K was still cruising).

Cheers.
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Message 1197361 - Posted: 19 Feb 2012, 17:43:28 UTC

Gentlemen, Lets keep this civil.
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Message 1197447 - Posted: 19 Feb 2012, 19:47:53 UTC - in response to Message 1197361.  

Gentlemen, Lets keep this civil.

What are you talking about?

I was talking about a mate of mine over here who likes to brag to much. ;)

Cheers.
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Message 1199804 - Posted: 25 Feb 2012, 22:02:09 UTC

As there was interest in this thread, Lets try it once more.

Keep it civil or its gone.
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Message 1199860 - Posted: 26 Feb 2012, 1:17:25 UTC

Recently AnandTech posted a review of Qualcomm's Krait CPU, a 1.5 GHz ARM-compatible dual-core CPU on 28nm process that should appear in handsets later this year. Benchmarks show a substantial jump in scores from current smartphone chips.

Linpack results (stresses FPU and memory subsystem):

Single threaded: 106.794 MFLOPS
Multi threaded: 218.197 MFLOPS

To put into perspective with x86 CPUs.

Phenom II @ 3.0 GHz: 1412.83 MFLOPS
Core i7 860: 2004.31 MFLOPS

(source)


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Message 1199976 - Posted: 26 Feb 2012, 14:59:26 UTC - in response to Message 1199860.  

I'm not sure where you got your numbers

This is the info on an amd 965 @ 3.4Ghz

Measured floating point speed 2792.47 million ops/sec
Measured integer speed 8573.71 million ops/sec

and my Athlon II 630 @ 2.8Ghz

Measured floating point speed 2310.81 million ops/sec
Measured integer speed 7157.31 million ops/sec

Notice that my 965 is nearly double and my 630 clear does more work that your supposed Phenom II @3.0Ghz. I'm getting in the line that says someone is intentionally shorting these numbers to make the handheld device look much better.

IIRC the Mflops are measured per core. which means not only are they attempted to shorthand an very fast Chip but also ignore that there are 4 cores running.
I think you've fallen into the realm of writer not understanding his hardware and reader believing it.

just for the sake of arguements. I just ran a benchmark on my FX-8150 using the AMD overdrive tool. It recorded a FLoPs of 16540 Amazing but you realize that it is taking all 8 cores into account and only uses 4 FPU's. The point is that divide by 8 to get your Mflops. thats something like 2067/core.

Now lets take another look at that dual core ARM chip that gets 100Mflops
That really isn't impressive. As pointed out in previous posts thats really really slow. We are talking 20X slower than an average CPU.

20 Freaking times slower. Then we can take a look at the average speed for an average WU on a CPU. lets say 2 hours for giggles, VLARs will take much longer, about 40 hours. That's 40 hours of crunch time on a device that likely has less than a 2 hour battery for active use.

Active being the difficult to determine quantity because most if not all apps do not stress a chip at all. So we are looking at maybe 1 hour of life on battery which means you are either constantly plugging in just to keep the battery from draining. Best case is that the battery isn't repeated drained which eventually shortens its life. Meaning again you are always plugged into to a wall socket which defeats the purpose of a mobile device.

I'm not even counting your added cost for your bandwidth usage, etc that you'd incur because of the download/uploads that you'd encounter. figuring about 14 WU's a month comes out to 5.1Mb which is pretty much beyond the standard smartphone contracted bandwidth usage.

For all that money wasted on a smartphone you could just as easily bought a cheap laptop and beaten your smartphone handily.



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Message 1200123 - Posted: 26 Feb 2012, 20:05:37 UTC - in response to Message 1199976.  

You are right that LINPACK may not offer the best method for comparison. I just looked up more benchmark results on x86 from LINPACK and found another two wildly different numbers.

Core i7-3960X (Stock, HT On) - 64.9275 GFLOPS
[url=http://www.xbitlabs.com/articles/cpu/display/core-i7-3960x-3930k_12.html]Core i7-3960X (4.5 GHz, HT On) - 133.9831 GFLOPS

There is an OC in the second case but it wouldn't account for that much difference. I suspect different setups or benchmark settings prevent it from being a good apples-to-apples comparison to use when different people are running the benchmark.

I'm not even counting your added cost for your bandwidth usage, etc that you'd incur because of the download/uploads that you'd encounter. figuring about 14 WU's a month comes out to 5.1Mb which is pretty much beyond the standard smartphone contracted bandwidth usage.

For all that money wasted on a smartphone you could just as easily bought a cheap laptop and beaten your smartphone handily.


5.1Mb is not a big deal for many data plans from major carriers in the U.S., but even if so, the smartphone client could give the option to restrict data transfers to only when a WiFi connection is available. In my case my phone uses the router in the house when it's in range and the cell data plan when I'm elsewhere. It probably gets a WiFi connection often enough that a reasonable cache will keep it busy when there is no WiFi.
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Message 1200161 - Posted: 26 Feb 2012, 21:40:11 UTC - in response to Message 1200123.  

You are right that LINPACK may not offer the best method for comparison. I just looked up more benchmark results on x86 from LINPACK and found another two wildly different numbers.

Core i7-3960X (Stock, HT On) - 64.9275 GFLOPS
Core i7-3960X (4.5 GHz, HT On) - 133.9831 GFLOPS

There is an OC in the second case but it wouldn't account for that much difference. I suspect different setups or benchmark settings prevent it from being a good apples-to-apples comparison to use when different people are running the benchmark.

I'm not even counting your added cost for your bandwidth usage, etc that you'd incur because of the download/uploads that you'd encounter. figuring about 14 WU's a month comes out to 5.1Mb which is pretty much beyond the standard smartphone contracted bandwidth usage.

For all that money wasted on a smartphone you could just as easily bought a cheap laptop and beaten your smartphone handily.


5.1Mb is not a big deal for many data plans from major carriers in the U.S., but even if so, the smartphone client could give the option to restrict data transfers to only when a WiFi connection is available. In my case my phone uses the router in the house when it's in range and the cell data plan when I'm elsewhere. It probably gets a WiFi connection often enough that a reasonable cache will keep it busy when there is no WiFi.

5MB/mo would cost a lot if you were on one of those $1.99/MB rates. Luckily most companies offer unlimited data plans cheap these days. Even thought I get unlimited I have to try if I want to use more than 100mb. So even a 200mb plan would work for me. Oddly if I changed plans it wold cost me more to have a 200mb data plan as the one I have now no longer exists.
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Message boards : Number crunching : Smartphone crunching


 
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