Raspberry PI4 - error even with glibc >2.15 and beta version
1 Nov 2019 14:22:35 UTC
Topic 219889
(moderation:
Dear all, Raspberry PI4 with 64 bit kernel, does not work. Glibc setting >2.15 and beta version.
Linux raspberrypi 4.19.80-v8+ #1275 SMP PREEMPT Mon Oct 28 18:49:38 GMT 2019 aarch64 GNU/Linux
gentleman74 wrote:Dear all,
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Read this thread [url]https://einsteinathome.org/content/install-ubuntu-1910-pi-4[/url]
I have no problem with WiFi
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I have no problem with WiFi connection, but there is problem I would need AArch64 compiled version with Cortex A72 gcc optimization. Is there any chance that You can compile it? Existing Raspberry version crash immediately with error messsage.
gentleman74 wrote:I have no
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Not me no, I have almost no clue about those kinds of things being mostly a Windows guy. I was just pointing you to a Linux version that did work on the Pi 4.
gentleman74 wrote:I have no
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Maybe one of these threads and apps could work?
Make sure to read the opening post in the threads.
https://einsteinathome.org/content/high-speed-linux-brp-app-raspberry-pi-3
https://einsteinathome.org/content/high-speed-linux-brp-app-odroid-c2
As far as I know the project
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As far as I know the project supplied app is 32 bit, assuming the BRP 1.47 app. Aarch64 is 64 bit.
With x86_64 they have to install 32 bit compatibility libraries, I’m not sure if you can to do the same with Aarch64 In order to run 32 bit apps.
I would suggest you install Raspbian on it then you should be able to run the project supplied 1.47 app.
BOINC blog
I did a bit of googling and
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It seems the Raspberry Pi foundation have an experimental aarch64 kernel for the Rpi which is what Gentleman74 is running. It runs on the 3B, 3B+ and the 4B.
I did a bit of googling and came up with this: https://forum.armbian.com/topic/4764-running-32-bit-applications-on-aarch64/
The Cavium Thunder based chips don’t work, not that it shouldn’t effect you seeing as you are using a Rpi. The ability to run 32 bit apps is an optional feature in the ARM specs and Cavium didn't implement it.
The best solution would be if the project built an aarch64 version of the BRP4 1.47 app but it’s not likely to be high on their list of things to do.
MarksRpiCluster
PorkyPies wrote:The best
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In the opening post in the first link I posted N30DG said: "If running a other Cortex-A53-device that has 64bit(AARCH64)-support you should consider using this Version for best performace."
The link points to the second link I posted.
Will this app run on the Pi4 Gentleman74 is running?
Looking at the task list of the Pi4 something has changed and the device is now returning validating tasks, so looking good.
Holmis wrote:In the opening
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I believe it needs fma instruction set, but we’re not sure if the Pi4 has that. If it has the instruction set then yes it should work.
It would be better still if the project could supply a compatible app, even if it’s considered as a beta app. We’ll see if we can get the project to adopt it
MarksRpiCluster
Just to clarify some
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Just to clarify some Things:
What I've wrote about the FMA has nothing to do with a app will run or not. It was targeting on a increased invalid-rate when you build your own Aarch64-BRP-App. But yes, my optimized app need's FMA-instructions, but all ARMv8-CPU's have that feature.
Read more about this here: https://einsteinathome.org/goto/comment/174281
And yes my Version, orginal made for the Odroid-c2 should in theory work on the PI4 with a 64bit-OS. It is build with the Cortex-A53 in mind, but that souldn't hurt performance on a A72. I've tested it on A72-Cores of a RK3399 and it worked just fine. But I havn't tested it on a PI4 yet, I probably should... but can't find my PI4... If I only could remeber where I put it. It was just waiting for a 64bit-OS to arrive.