Posts by Ray_GTI-R
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1)
(Message 1574)
Posted 24 Aug 2013 by 
Ray_GTI-R
Post: Run on a weedy tablet/Android/NativeBOINC, WU ended & reported without drama:- Computer ID 44701 Report deadline 25 Aug 2013, 11:11:04 UTC Name ps_130726_13536_69_0 Workunit 4117549 Task# 9650572 <core_client_version>7.0.36</core_client_version> <![CDATA[ <message> process got signal 11 </message> <stderr_txt> </stderr_txt> ]]> Also... "Exit status 11 (0xb) Unknown error number" What does "signal 11" mean, please? I'm switching to a different project pending a non-geek explanation. TIA, Ray |
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2)
(Message 1016)
Posted 30 Mar 2013 by
Ray_GTI-R
Post: Hi matszpk Yes, my ARMv6 devices are slow (Raspberry Pi @ 900 mhz & Disgo 7000). Really, really slow. |
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3)
(Message 999)
Posted 20 Mar 2013 by
Ray_GTI-R
Post: OK, both arm v6 devices completed slightly ahead of my rough calculations at about 4.6 days each task. Compare with the ODROID U2 arm v7 that completes 4 tasks concurrently in about 9.3 hours. Now I know the arm v6 isn't as powerful as the arm v7 (MHz, architecture etc). But simple math can't explain why there is such a vast gulf in task duration between these ARM devices so I reckon the problem is RAM - in particular the lack of onboard cache built into the arm v6 devices. For example, my model RPi has only 256mb compared to the 2gb of the arm v7 shared by 4 cores. To use an old Windows analogy it looks like the arm v6 devices are "thrashing". I think the tiny memory in the arm v6 devices simply can't cope with the demands placed by Asteroids and dump to the (slower) swapfile, have to re-read it, dump, re-read etc etc. Other BOINC projects work much more happily on the arm v6 devices. For example Subsetsum completes in hours rather than days. Does anyone know a simple way of checking if this "thrashing" is taking place? FWIW my RPi runs Raspbian. TIA, Ray |
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4)
(Message 995)
Posted 17 Mar 2013 by
Ray_GTI-R
Post: Hi. Just attached some ARM devices. all Android devices running 100% CPU usage, standard clocks. 1 x ODROID U2/Android/NativeBOINC ... .. 4 concurrent tasks, after 30 minutes:- ... 2.187% ... 4.496% ... 0.000% >>> ??? (1.823% after +/- 40 minutes then started motoring) ... 2.187% All completed in +/- 9 hours 20 minutes. 1 x cheap generic pad/Android/NativeBOINC, 1 task, after 30 minutes 0.000% >>> ??? (3.852% after 5 hrs*) Will probably take 6 days to complete. And for good measure an RPi running BOINC @ 90% CPU (100% CPU always fails) under Raspbian and o/c to 900mhz etc, 1 task, after 30 minutes 0.000% then after 11 hours it shows 10% completed. This also will probably take 6 days to complete. HTH, Ray * by comparison after 5 hours each concurrent U2 task was +50%. Which is nice. |
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5)
(Message 433)
Posted 11 Dec 2012 by
Ray_GTI-R
Post: Wow! Ordered 23 Aug 2012, now 11 Dec 2012. That is far, far too long. If you asked the RPi foundation for a free sample ... I don't think it will ever come. If you bought a retail item ... complain! There are items on Ebay that could be delivered internationally in about 5 days just using a standard Priority postal service like Royal Mail International Signed-For??? FWIW there are around 800K RPi's around. FWIW2 based on my current experience running the new Asteroids@home Windows application on a Gallatin via XP Pro SP3 / non-HT / 50% usage / BOINC 6.12.34 (x86) ... a RPi could take some days running 24/7 to complete just one task. |
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6)
(Message 427)
Posted 9 Dec 2012 by
Ray_GTI-R
Post: Thank you very, very much - I am sure this project will now get loads more people producing valuable data. Ray |
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7)
(Message 299)
Posted 9 Oct 2012 by
Ray_GTI-R
Post: As the Title says, in order to do work in a really powerful way the project needs to support processing using GPUs. Ray (Linux/Windows, AMD(ATI)/Nvidia neutral - I just wanna help) |
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8)
(Message 156)
Posted 24 Aug 2012 by
Ray_GTI-R
Post: Oh, I see. Here are my results ... Number of CPUs: 1 313 floating point MIPS (Whetstone) per CPU 1057 integer MIPS (Dhrystone) per CPU (FWIW I'm running this RPi at 950mhz - on standard voltage BTW - which explains the higher results. It's been going for the past 24hrs, cased with forced ventilation and only a tiny custom-made heatsink on the SOC, running a GUI and a CPU-intensive graphical program. The deltaT across various components is approx +5C which is nice.) |
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9)
(Message 153)
Posted 23 Aug 2012 by
Ray_GTI-R
Post: Unfortunatelly I don't have Raspberry Pi for testing but I can see that it has been spreading so I think about it. Can you please post some benchmarks of CPU, memory etc? I don't have any idea about its performance. Details provided. Any news? (ODROID-X on order, big 6-page benchmark review available http://www.phoronix.com/scan.php?page=article&item=samsung_odroidx&num=1) |
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10)
(Message 136)
Posted 7 Aug 2012 by
Ray_GTI-R
Post: Official features of the Raspberry Pi model B board according to http://uk.rs-online.com/web/generalDisplay.html?id=raspberrypi:- * Broadcom BCM2835 700MHz# ARM1176JZFS processor with FPU and Videocore 4 GPU * GPU provides Open GL ES 2.0, hardware-accelerated OpenVG, and 1080p30 H.264 high-profile decode * GPU is capable of 1Gpixel/s, 1.5Gtexel/s or 24GFLOPs with texture filtering and DMA infrastructure * 256MB RAM## * Boots from SD card, running the Fedora version of Linux### * 10/100 BaseT Ethernet socket # mine is running a stable 800mhz @ Delta T at 21C of 3C overall without any specialist cooling so these figures are probably 14%++ below what I currently get ## mine has a 4gb "class 4" SD card for the O/S including a standard 100mb swapfile (I haven't seen a need to change that), the SD card is upgradeable to "16gb class 10" ### mine is running Raspbian, the official Raspberry Pi distro with manufacturer-optimised settings |
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11)
(Message 133)
Posted 5 Aug 2012 by
Ray_GTI-R
Post: Hi. I am running BOINC (see below). I have added asteroidsathome. In the Event Log I get the error message " ... This project doesn't support computers of type arm-unknown-linux-gnueabihf". Please help. Thanks, Ray 
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