Raspberry Pi 2B Work

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aurorans_solis
aurorans_solis
Joined: 4 Apr 20
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Thanks! Also much thanks to

13 Apr 2020 9:33:16 UTC
Message 176570
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    Thanks! Also much thanks to Robl - if it weren't for the thread they mentioned, I wouldn't have found out about the '--with-boinc-platform' and '--with-boinc-alt-platform' arguments for configuration. I completely missed those when going through BOINC's documentation for compiling the client yourself.

    PorkyPies
    PorkyPies
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    It looks like the scheduler

    13 Apr 2020 9:40:20 UTC
    Message 176571
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      It looks like the scheduler is looking at the CPU features for “neon” and if it finds it gives out the 1.47 app. As far as I know the Pi2 can do neon.

      I will try and fire up a Raspberry Pi2 using Raspbian to see what it does. Most of my fleet is Pi3’s and a couple of Pi4’s that are doing Rosetta work at the moment. I don’t tend to use the Pi2 due to their speed. The Pi3’s take around 11:30 to do a BRP4 work unit. I have no idea how long a Pi2 will take.

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      PorkyPies
      PorkyPies
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      Okay fired up one of my old

      13 Apr 2020 13:56:59 UTC
      Message 176574
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        Okay fired up one of my old Pi2B’s. It’s this one https://einsteinathome.org/host/12824814

        Standard install of Raspbian buster-lite, although after doing an apt upgrade it tried to install Pi-Bluetooth. That failed because the Pi2 doesn’t have Bluetooth. Attaching to Einstein worked as normal and it downloaded the 1.47 app and its crunching away.

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        aurorans_solis
        aurorans_solis
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        Definitely seeing that

        13 Apr 2020 21:31:51 UTC
        Message 176584
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          Definitely seeing that they're taking their sweet time to do work, myself. Might have some bad CFLAGS - the ones I'm using now are "-O2 -pipe -march=armv7-a -mfpu=neon-vfpv4 -mfloat-abi=hard", but I should probably change from -O2 to -O3 for BOINC and doing

          gcc -### -E - -march=native 2>&1 | sed -r '/cc1/!d;s/(")|(^.* - )|( -mno-[^\ ]+)//g'

          suggests my flags should be "-mfloat-abi=hard -mfpu=vfpv3-d16 -mtls-dialect=gnu -mtune=cortex-a7 -marm -march=armv7ve+simd" excluding -O3 and -pipe. Maybe I should try recompiling after the tasks they're working on now are done?

          aurorans_solis
          aurorans_solis
          Joined: 4 Apr 20
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          I've seen mention in a number

          13 Apr 2020 22:24:06 UTC
          Message 176587
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            I've seen mention in a number of places of some "wisdom" thing and how it's improved performance for people. What's this about? I'm getting a lot of results when searching for that term on the site, but all I've found so far is on what it is.

            PorkyPies
            PorkyPies
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            First batch of 4 work units

            14 Apr 2020 6:03:28 UTC
            Message 176596
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              First batch of 4 work units done using the project supplied app. Approx run time was 16 hours. I've got another 4 tasks going, which I will let it complete. After these 4 I will mothball it. Its no surprise they are somewhat slower that the Pi3B.

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              aurorans_solis
              aurorans_solis
              Joined: 4 Apr 20
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              Average runtime so far has

              14 Apr 2020 16:32:22 UTC
              Message 176605
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                Average runtime so far has been 16.25 hours per task here, with a minimum of about 15.4 hours and a maximum of 17 hours. I'm still finding mentions of custom clients and using FFTW here and there, but I'm either missing something staring me right in the face or I can't find any guides for making custom clients using FFTW and the RPi GPU (if it's even worth it).

                Danil
                Danil
                Joined: 12 Jun 20
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                Hi folks! Well, there is

                19 Mar 2021 2:46:44 UTC
                Message 184349
                (moderation:
                  )

                  Hi folks!

                  Well, there is more simpler solution for wrong platform without recompiling.

                  Just create/edit cc_config.xml and add alt platform with right name:

                  <cc_config>
 <options>
   <alt_platform>arm-unknown-linux-gnueabihf</alt_platform>
   <no_alt_platform>0</no_alt_platform>
 </options>
</cc_config>

                  and force client to read it:

                  boinccmd --read_cc_config

                   

                  P.S.

                  Looks like multi-line code block not working -_-

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