Using NEON in Raspberry Pi 4 64 Bits Bullseye

Lequim
Lequim
Joined: 10 Jun 14
Posts: 4
Credit: 295,651
RAC: 1,075
Topic 228102

Hi there,

 

I'm using a raspberry pi 4 with the 64 bit image of Raspberry Pi OS, Bullseye based. I did the trick of manually changing the architecture to "aarch64-unknown-linux-gnu", but i've seen other tasks running in ARMv7 with architecture identified as "arm-unknown-linux-gnueabihf" and with NEON instructions. I assume these are 32 bit OS's running on raspberry pi's or something similar.

Does the 64 bit jobs use NEON instructions? If not, how could i enable them?

Also i'd would like to ask why i have so many invalid tasks? I know each task is sent to at least another user and if results differ, another computers will compute the same task till the output matches, but since i changed to 64 bits i have a lot more invalids than before. Right now i have 60 valid tasks and 15 invalid. Could it be a software issue or something wrong with my raspberry pi (OC, temperatures, etc)?

mikey
mikey
Joined: 22 Jan 05
Posts: 9,834
Credit: 1,349,118,195
RAC: 860,598

Lequim wrote: Hi

Lequim wrote:

Hi there,

 

I'm using a raspberry pi 4 with the 64 bit image of Raspberry Pi OS, Bullseye based. I did the trick of manually changing the architecture to "aarch64-unknown-linux-gnu", but i've seen other tasks running in ARMv7 with architecture identified as "arm-unknown-linux-gnueabihf" and with NEON instructions. I assume these are 32 bit OS's running on raspberry pi's or something similar.

Does the 64 bit jobs use NEON instructions? If not, how could i enable them?

Also i'd would like to ask why i have so many invalid tasks? I know each task is sent to at least another user and if results differ, another computers will compute the same task till the output matches, but since i changed to 64 bits i have a lot more invalids than before. Right now i have 60 valid tasks and 15 invalid. Could it be a software issue or something wrong with my raspberry pi (OC, temperatures, etc)? 

You might want to try this thread instead https://einsteinathome.org/content/arm64-linux-aarch64-apps

Lequim
Lequim
Joined: 10 Jun 14
Posts: 4
Credit: 295,651
RAC: 1,075

Wow, thanks a lot!

Wow, thanks a lot!

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