Parallella, Raspberry Pi, FPGA & All That Stuff

robl
robl
Joined: 2 Jan 13
Posts: 1,708
Credit: 1,447,256,187
RAC: 88,900

How To Boot From USB On

How To Boot From USB On Raspberry Pi 4

I have not tried this but thought it might be of interest to the community.  It is not the "/boot" partition on SD card and "/root" partition on usb approach but a self contained "all on usb device" approach.  Anyway have a look.

bowguy
bowguy
Joined: 2 Oct 17
Posts: 36
Credit: 9,876,884
RAC: 4,786

Doing lots of maintenance of

Doing lots of maintenance of power applies and cases.  Dug up stuff from my pi junk drawer and rebuilt everything I had.  I now have the following models generating credit on Einstein@Home:

Zero

ZeroW

PiB

Pi3B

Pi3B+

I also have pi4's with credit but they are on Rosetta@Home.  Fun little toys.

robl
robl
Joined: 2 Jan 13
Posts: 1,708
Credit: 1,447,256,187
RAC: 88,900

Added a Pi 4 8GB to the E@H

Added a Pi 4 8GB to the E@H effort.  It is running Ubuntu 20.04 64bit.  The computer ID ends in 7344.  OS installation on Pi 4s seem to have difficulty with the HDMI interface unless you make adjustments to the /boot/firmware/usercfg.txt file (Ubuntu).  Adding the line:  hdmi_safe=1 helps with painting your monitor screen.  Otherwise you just have a black screen.  The usercfg.txt file gets picked up in the boot logic with ubuntu.  Many solutions say to modify /boot/config.txt but the Header to this file on Ubuntu states the user should use the usercfg.txt file to make necessary adjustments.  In Raspberrypi OS I don't believe there is a usercfg.txt file so one would have to use the config.txt file to make changes if you are experiencing problems with nothing written to screen. 

HDMI recognition seems to be a bit of an issue with the Pi 4s, i.e. the Pi boots but nothing is being written to the screen/monitor without tweeking one of the files above depending on which OS you use.  When done with Ubuntu 20 install you will have a 592x448 screen resolution which is quite useless but easily corrected my additional changes to the usercfg.txt file above.  

I use Ubuntu because I know where everything is.  Raspberrpi OS is a great OS too.  I am just not that familiar with it so:  "better the devil you know".

EDIT:  The following link provides a procedure on How to install Ubuntu 20.04 on a Pi 4

PorkyPies
PorkyPies
Joined: 27 Apr 16
Posts: 191
Credit: 23,673,192
RAC: 34,634

bowguy wrote: I now have the

bowguy wrote:

I now have the following models generating credit on Einstein@Home
<snipped>


What app do you use on the Pi zeroes and Pi model B? I thought the 1.47 app didn’t work on them and the 1.06 stopped working with Stretch.

bowguy
bowguy
Joined: 2 Oct 17
Posts: 36
Credit: 9,876,884
RAC: 4,786

PorkyPies wrote: What app do

PorkyPies wrote:

What app do you use on the Pi zeroes and Pi model B? I thought the 1.47 app didn’t work on them and the 1.06 stopped working with Stretch.

A year or so go I compiled it from source.  It took a few minor bug tweaks but not bad.  Now it is harder because it was built against some depreciated libraries.

I could post my binary if interested.  A Zero only gets about 40 RAC but the memory is fine since there is only 1 CPU

PorkyPies
PorkyPies
Joined: 27 Apr 16
Posts: 191
Credit: 23,673,192
RAC: 34,634

I'm giving away my Pi2's and

I'm giving away my Pi2's and and a fair few Pi3's so that I can concentrate on the Pi4's. The bad news is you'll need to be in Australia. See my blog for details if interested.

zombie67 [MM]
Joined: 10 Oct 06
Posts: 109
Credit: 404,604,658
RAC: 1,015,578

I have an RP4 2gb running

I have an RP4 2gb running Raspberry Pi OS 32bit (armv7l). It seems to run the BRP4 app fine (first task is 26% complete.

I have four RP4 8gb running Raspberry Pi OS 64bit (aarch64). Natively, when asking for BRP4 tasks, it gets back "platform 'aarch64-unknown-linux-gnu' not found". Fair enough. Most projects that support RPs don't (yet). So I add the following to my cc_config.xml:

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

This works for other projects that only support 32bit, such as WCG. I am then able to get work (yay!). But the tasks all error out with the following:

Stderr output

<core_client_version>7.14.2</core_client_version>
<![CDATA[
<message>
process exited with code 127 (0x7f, -129)</message>
<stderr_txt>
../../projects/einstein.phys.uwm.edu/einsteinbinary_BRP4_1.06_arm-unknown-linux-gnueabihf: error while loading shared libraries: libstdc++.so.6: cannot open shared object file: No such file or directory

</stderr_txt>
]]>

Any ideas how to resolve?

Reno, NV
Team: SETI.USA

Keith Myers
Keith Myers
Joined: 11 Feb 11
Posts: 4,037
Credit: 13,829,682,725
RAC: 24,753,774

You need to install the 32

You need to install the 32 bit libraries for libstdc++. And then do the cc_config.xml alt_platform deal.

https://boinc.berkeley.edu/forum_thread.php?id=11411#75341

 

zombie67 [MM]
Joined: 10 Oct 06
Posts: 109
Credit: 404,604,658
RAC: 1,015,578

Keith Myers wrote: You need

Keith Myers wrote:

You need to install the 32 bit libraries for libstdc++. And then do the cc_config.xml alt_platform deal.

https://boinc.berkeley.edu/forum_thread.php?id=11411#75341

 

Thanks for the suggestion.  I tried that, but still getting errors.  Any other suggestions?  Is anyone successfully crunching this app with RP4 + Raspberry Pi OS 64 bit?

 

Stderr output

<core_client_version>7.14.2</core_client_version>
<![CDATA[
<message>
process exited with code 127 (0x7f, -129)</message>
<stderr_txt>
../../projects/einstein.phys.uwm.edu/einsteinbinary_BRP4_1.06_arm-unknown-linux-gnueabihf: relocation error: ../../projects/einstein.phys.uwm.edu/einsteinbinary_BRP4_1.06_arm-unknown-linux-gnueabihf: symbol h_errno version GLIBC_PRIVATE not defined in file libc.so.6 with link time reference

</stderr_txt>
]]>


Reno, NV
Team: SETI.USA

robl
robl
Joined: 2 Jan 13
Posts: 1,708
Credit: 1,447,256,187
RAC: 88,900

zombie67 [MM wrote:]Keith

zombie67 [MM wrote:

]

Keith Myers wrote:

You need to install the 32 bit libraries for libstdc++. And then do the cc_config.xml alt_platform deal.

https://boinc.berkeley.edu/forum_thread.php?id=11411#75341

 

Thanks for the suggestion.  I tried that, but still getting errors.  Any other suggestions?  Is anyone successfully crunching this app with RP4 + Raspberry Pi OS 64 bit?

 

Stderr output

<core_client_version>7.14.2</core_client_version>
<![CDATA[
<message>
process exited with code 127 (0x7f, -129)</message>
<stderr_txt>
../../projects/einstein.phys.uwm.edu/einsteinbinary_BRP4_1.06_arm-unknown-linux-gnueabihf: relocation error: ../../projects/einstein.phys.uwm.edu/einsteinbinary_BRP4_1.06_arm-unknown-linux-gnueabihf: symbol h_errno version GLIBC_PRIVATE not defined in file libc.so.6 with link time reference

</stderr_txt>
]]>

look at my list of computers.  then look at:  this link.

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