Projects that support Raspberry Pi

Not sure where this should be posted. I guess this place will do.

Some apps are 32 bit, some 64 bit (aarch64). You can run 32bit apps on a 64 bit OS by adding to your cc_config.xml. See later post.

Not all of these apps always have work.

Code:

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Project                        Application                                Pi app?
Amicable Numbers        Amicable Numbers up to 10^21                Yes
Asteroids@home                Period Search Application                Yes
Einstein@Home                Binary Radio Pulsar Search (Arecibo)        Yes
GoofyxGrid@Home                Monkeys v1                                Yes
GoofyxGrid@Home                Monkeys v2                                Yes
GoofyxGrid@Home                Monkeys v3                                Yes
GoofyxGrid@Home                Monkeys v4                                Yes
iThena                        iThena CNode                                Yes
LHC@home                sixtract                                Yes
Rosetta@home                Rosetta                                        Yes
Ralph@home                Rosetta                                        Yes
T.Brada Experiment Grid        PADLS Total                                Yes
T.Brada Experiment Grid        Symmetric Prime Tuples                        Yes
T.Brada Experiment Grid        Lua Alfa                                Yes
TN-Grid Platform        gene@home PC-IM                                Yes
Universe@Home                Universe BHspin v2                        Yes
Universe@Home                Universe ULX                                Yes
Universe@Home                Neutron Star and Black Hole formation        Yes
wanless2                Random-base WEP Factorization                Yes
World Community Grid        Beta Test                                Sometimes
World Community Grid        OpenPandemics - COVID 19                Yes
WUProp@Home                Data collect version 4                        Yes
yoyo@home                Cruncher ogr                                Yes
yoyo@home                ecm                                        Yes
yoyo@home                ecm P2                                        Yes
yoyo@home                M Queens                                Yes
yoyo@home                Siever                                        Yes

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Some tips running 64 bit. This definitely applies to Raspberry Pi 4, running Raspberry Pi OS (64 bit version). These may apply to other 64 bit versions of linux too, but I haven't tested any of them yet. Also, may apply to other ARM machines, but I don't have any to try.:

- Add these to your cc_config.xml, so that your 64bit OS will request 32bit apps, if necessary:

Code:

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<alt_platform>arm-unknown-linux-gnueabihf</alt_platform>
<alt_platform>armv7l-unknown-linux-gnueabihf</alt_platform>

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- With 64bit linux on intel/amd, in order to run some of the 32bit apps, you also need to add the 32bit libraries (ia32-libs). Similar situation with 64bit linux on ARM. To do that:

Code:

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sudo dpkg --add-architecture armhf
sudo apt-get update
sudo apt-get upgrade
sudo apt-get install libc6:armhf libstdc++6:armhf
sudo reboot

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- For Einstein in particular, even doing all of the above doesn't prevent the tasks to error out on the "Binary Radio Pulsar Search (Arecibo)" sub-project. Apparently there is some issue with the app from the project. So manually add a custom-built application and app_info.xml:

Code:

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cd /var/lib/boinc-client
sudo wget http://kerbodyne.com/einstein/einstein_64bit_0.13.tar
sudo tar -xvf einstein_64bit_0.13.tar
sudo systemctl restart boinc-client

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Updated the original post of projects/apps.

Some Raspberry Pi management tips.

I have monitor, keyboard, and mouse connected physically during initial boot and set up. Then I disconnect all that hardware. I manage them only over network after that.

To enable ssh:
Menu -> preferences -> Raspberry Pi Configuration -> Interfaces -> ssh (enable)
(Also, change host name here under system tab, if you want)

Then from a terminal on my mac:
ssh -Y pi@192.168.7.111 (replace with whatever the IP address of your machine is)

you will be asked to allow whatever, and reply with "yes".

Once logged into your raspberry pi, you can type the following commands:
To display GUI: startlxde-pi
To display CPU freq: watch -n 1 vcgencmd measure_clock arm
To display CPU temp: /opt/vc/bin/vcgencmd measure_temp

To make those commands easier

Create command line aliases, add these lines to your .bash_aliases on your raspberry pi. I use vi, but whatever command line editor you like will do the trick.
alias freq='watch -n 1 vcgencmd measure_clock arm'
alias temp='watch -n 1 vcgencmd measure_temp'
alias gui='startlxde-pi'

To overclock, you *really* need a kit of heatsinks and a case with a fan. But take heart! You can buy them for only a few dollars.:

https://magpi.raspberrypi.org/articl...raspberry-pi-4

Raspberry Pi OS:
sudo vi /boot/config.txt

Ubuntu and their variants:
/boot/firmware/config.txt (or maybe /boot/firmware/usrconfig.txt)

From this:
#uncomment to overclock the arm. 700 MHz is the default.
#arm_freq=800

To this:
#uncomment to overclock the arm. 700 MHz is the default.
over_voltage=2
arm_freq=1750

Or to this:
over_voltage=6
arm_freq=2000

After every change:
sudo reboot

There is a hard limit at 80 degrees. It throttles at that point, so that is why you want to monitor temps until you understand the heat range of your Raspberry Pi.

And the apps are not equal with regard to temp! Rosetta runs about 5 degrees higher than the others as I write this.

FWIW, when temps get high, the wifi tends to fail. So it looks like the machine is dead when using a bionic management app like BOINCtasks. But the Pi has just dropped wifi connection. So I use the hard-wired ethernet instead, and that is rock-solid.

Stressberry to stress-test for the Raspberry Pi:
https://pypi.org/project/stressberry/

A couple more points, that were not made clear in the previous post:

To learn the IP address of your Raspberry Pi, in a terminal: ifconfig -a

In order to do the ssh stuff, and then display the Raspberry Pi GUI desktop on your Mac, you must install XQuartz (an X windows system) on your Mac. I assume you have to have something similar for it to work on your windows machine too.

https://www.xquartz.org

I have my Raspberry Pi 3 in a case that includes a dedicated 7" touch screen.

Attachment 3086


But, I found on Windows, I can access the GUI on the Pi remotely using TeamViewer. :D
(You can see the TeamViewer icon in the lower right corner of the Pi screen in the picture.)
I may try messing with a RP4 sometime in the future.

Here is my mini farm.

https://www.dropbox.com/s/kvprufha88...2457.jpg?raw=1
https://www.dropbox.com/s/khfnulzaee...2456.jpg?raw=1

Boy thats not a farm that's ART @-) It needs to be on YouTube.

Cool! :cool:
Nice setup.
Five slices of Pi.

What temps are you getting with those fans and heatsinks?

Quote:

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Originally Posted by Ron Shurtz

Cool! :cool:
Nice setup.
Five slices of Pi.

What temps are you getting with those fans and heatsinks?

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It *really* depends on the apps running. For Einstein Binary Radio Pulsar Search (Arecibo), mid 50s. For Rosetta, 65-75. FWIW, adding a small external USB fan drops the temps about 5 degrees.

My machines are running at 2000 mhz and a voltage setting of 6.

Code:

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over_voltage=6
arm_freq=2000

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I changed the layout a bit, to accommodate the fan.

https://www.dropbox.com/s/1mjqqv3dm1...460.jpeg?raw=1
https://www.dropbox.com/s/m1n8c3vfme...461.jpeg?raw=1

Z, that cluster is a thing of beauty! Nice job! My setup (3x pi 3b and 1x pi4 from Z - thank you!) is very similar, though not nearly as attractive. All 16 cores running OpenPandemics.