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Thread Status: Active Total posts in this thread: 46
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Coleslaw
Veteran Cruncher USA Joined: Mar 29, 2007 Post Count: 1343 Status: Offline Project Badges:
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If WCG can get work on these new chips, Would seriously consider building an 8 core Opteron based on the A1100. Cheaper and uses less electricity. Won't be long before we see 2P boards for these (I hope). Or possibly even 4P... ![]() ![]() ![]() ![]() ![]() |
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granno21
Cruncher Japan Joined: Apr 14, 2011 Post Count: 11 Status: Offline Project Badges:
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Anyone have an Andriod TV Stick they can test for performance?
----------------------------------------They seem to be dropping in price with 1.6ghz quad cores running as low as $45. Might be cheap, low cost, low power, way of creating a multi-core setup. I can see grabbing 3 of these for a total of 12 cores at less than 15 watts of power. Here's one I was looking at with plenty of memory and 4 cores ($60 now, but have seen for $45): http://www.amazon.com/Google-Android-Dongle-RK3188-Bluetooth/dp/B00CY9YOKM ![]() |
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Eric_Kaiser
Veteran Cruncher Germany (Hessen) Joined: May 7, 2013 Post Count: 1047 Status: Offline Project Badges:
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Biggest problem with the TV Stick would be the cooling. I own a minix neo x7 that was also designed as a TV android device with a quad core cpu (2GB Ram and 8GB Flash). It has a passive cooler mounted to the cpu but no air circulation in its box. The cooler touches the housing but cooling is ineffective that means instead of running at 1,6GHz it throttels down to 1,0GHz.
----------------------------------------On the other hand I bougt two hardkernel odroid u3 with quad core cpu running on 1,7GHz. You can run them either from microSD-Card or from eMMC-Card. I placed an old case fan on top of the passive cooler that prevents from throttling down. They run WCT 24/7 with full load. ![]() |
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granno21
Cruncher Japan Joined: Apr 14, 2011 Post Count: 11 Status: Offline Project Badges:
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What is the performance like on your u3?
----------------------------------------I was looking at those but to get everything setup with hdmi, power adapter, and sd card was much more expensive ($80). I wonder if you could mod the andriod tv stick to get better cooling and not throttle. ![]() |
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Eric_Kaiser
Veteran Cruncher Germany (Hessen) Joined: May 7, 2013 Post Count: 1047 Status: Offline Project Badges:
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Type Runtime Points # Result I've posted the current values from my 3 devices. We should focus on the first and the third entry because the second one is to new and calculating an average makes no sense at the moment. Let us have a look on the Minix-X7 first (@1.0GHz OS on internal Flash Memory): The runtime in hrs (I round the minutes and seconds) is 11,894 hrs. It returns 1,040 results. That means average runtime per result is 11.4 hrs. In comparison the U3-mSD (@1.7GHz OS on microSD-Card): Total runtime in hrs is 2,206 hrs. It returns 325 results. Average runtime per result is 6.8 hrs. The factor between 1.0GHz and 1.7GHz is 1.7. The factor between the average runtimes is very close to 1.7 I suppose that the runtime of the U3-eMMC (@1.7GHz OS on eMMC-Card) might be shorter compared to the U3-mSD because the eMMC is a much faster storage than the mSD. But you're right with your suggestion: If the cooling of the minix would be better the performance should also increase. A few month ago I opened the case of the minix and placed a fan on the passive cooling mount with no difference in throttling behaviour. Instead of the fan I've tried a thermal pack with -23°C on top of the cooler. No difference. So cooling this device is not as easy as it looks like and I'm running it as it is. I think you would observe the same behaviour with the TV-Stick you've linked in your post as well. To get the maximum out of it you need some cooling anyhow. ![]() |
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granno21
Cruncher Japan Joined: Apr 14, 2011 Post Count: 11 Status: Offline Project Badges:
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How does your u3 @ 1.7ghz run times compare to intel/amd cpu? I know that arm wins on power efficiency but I'm also curious about cost efficiency.
----------------------------------------Based on your cooling tests, it seems that the cheaper quad core arm chips might not be able to run at full speed across all their cores, which is unfortunate. Thanks for all the data, really interesting to see how arm's cpus progress. ![]() |
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Eric_Kaiser
Veteran Cruncher Germany (Hessen) Joined: May 7, 2013 Post Count: 1047 Status: Offline Project Badges:
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How does your u3 @ 1.7ghz run times compare to intel/amd cpu? I know that arm wins on power efficiency but I'm also curious about cost efficiency. Here we go: i7-3930k (@3.5GHz 64GB RAM Win7 64-bit from SSD, WCG on normal 4TB HDD for 24/7 usage)
Runtime so far: 34,671 hrs Results: 10,854 average runtime per result 3,2 hrs But I think this is not comparable because 2 years of runtime was CEP2 (runtime per wu up to 18 hrs). Another year of runtime was spent for MCM. The rest is a mixture of SNTS and FAAH (vina & docking) Perhaps another comparison makes more sense: Points per hour of runtime: i7: ~183 pts/h minix: ~30 pts/h u3-mSD: ~61 pts/h The last result is based on 0:002:10:18:14 4,898 16 As mentioned in my post before the runtime so far is to short and not enough results and points measured right now. Update from today: (u3-eMMC: ~84 pts/h) result is based on 0:005:22:21:12 11,966 30 End of Update Update 2: (u3-eMMC: ~90 pts/h) based: 0:008:19:58:03 19,284 40 End Update 2: If we compare the i7 (@3.5GHz) against u3-mSD (@1.7GHz) it's 183 pts/h to 61 pts/h. Some thoughts about cost efficiency: for the i7 System (i7-3930k, 2 256GB SSD, 64 GB RAM, 4 TB HDD, Radeon 7850, BluRay-Burner, case, mainboar, psu) I had to pay >$3,150. The u3 with 8GB eMMC and shipment was $120. Running the i7 24/7 cost me $75 (worth 216KWh) every month for energy (in germany each KWh is $0.35). The three android devices consume 21,6KWh/Month (rounded to 10W/Device) and cost $7.60. Shutting down my i7 for three month is worth three new u3 (roughly) I can buy. Based on your cooling tests, it seems that the cheaper quad core arm chips might not be able to run at full speed across all their cores, which is unfortunate. I haven't investigated any further. Perhaps the passive cooler wasn't mounted correctly by the manufactorer or anything else is weird. I'm not sure if the cooler is removable and I could replace it by something better. In fact that this device was the most expensive (~$160) I take it as it is. ~5W power consumption isn't bad at all for it's output. The u3 power consumption is ~8W. Thanks for all the data, really interesting to see how arm's cpus progress. You're welcome ![]() ![]() [Edit 3 times, last edit by Eric_Kaiser at Mar 21, 2014 8:49:26 AM] |
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Eric_Kaiser
Veteran Cruncher Germany (Hessen) Joined: May 7, 2013 Post Count: 1047 Status: Offline Project Badges:
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Short update after a couple of day running the odroid u3 from emmc card: Total runtime of returned results for this device is now 26 Days and 9 hrs giving 52,965 points. Thus every hour is worth ~84 points.
----------------------------------------While the odroid u3 running from microSD card returns 61 pts/h the u3 with emmc turns out to be 35% faster. Or compared to my pc: PC@3.5GHz 183 pts/h U3-emmc@1.7 84 pts/h That's really not bad. ![]() |
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Coleslaw
Veteran Cruncher USA Joined: Mar 29, 2007 Post Count: 1343 Status: Offline Project Badges:
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That is not bad indeed considering the power consumption. In other news, we should expect 64bit ARM processors in phones by X-mas. No details on 64bit Android OS yet.
----------------------------------------http://www.cnet.com/news/move-to-64-bit-android-phones-accelerating-says-arm/ ![]() ![]() ![]() ![]() |
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pettud
Cruncher Romania Joined: Feb 4, 2014 Post Count: 15 Status: Offline Project Badges:
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Hi,
I installed BOINC agent on mu tablet with android 4.0 as SO since April 13. So fat it generates 4904 points and get 48 results retutned. But it generates 12 pages x 14 records and a lot of Errors,only 3 in progress and 2 Pending Validations only. There are too many Errors as status. WHY? Is this a good or bad thing? How can I resolve these errors? Can they be solved anyway? |
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