[cfarm-users] Is there any computer with armhf architecture on cfarm? - thank you

[Jaroslav Fojtik]

Dear Cfarm users,

thank you very much for too much responses.


> On 06/07/25 09:54, Jaroslav Fojtik via cfarm-users wrote:
> > Is there any accessible computer with armhf architecture on cfarm?
> armhf isn'r a hardware type, it's the Debian name for their repo
> compiled for the armv7 with hardware VFP math instructions.
I did not know what is it.


My first question contained this link:
https://launchpadlibrarian.net/802217984/buildlog_ubuntu-questing-armhf.wp2latex_4.15~ds-1
_BUILDIN
> G.txt.gz
> Ubuntu-Bug: https://bugs.launchpad.net/ubuntu/+source/wp2latex/+bug/2115809
It is clear that it is meant UBUNTU.


--------


I hope that I do not need this platform anymore.
First answer from Paul was helpful.

#I am not aware of any armhf hardware.
#However, at least some of the aarch64 systems have the necessary
#cross-compilers to build armhf executables, and can execute them natively.
#A trivial demo on cfarm117 appears below.

I has been traced defines and it seems that main problem was unalligned access.
Ability to access unalligned variables is signelized by this macro:
__ARM_FEATURE_UNALIGNED

 #if !defined(NATIVE_ACCESS) && !defined(HI_ENDIAN) && !defined(__ARM_FEATURE_UNALIGNED)
  #define NATIVE_ACCESS
 #endif

It is all I need.

thanks again
   Jara





 
 
> If instead you mean Raspberry Pi, their hardware baseline is ARM v6
> 
> and someone had to recompile all of Debian as armv6 VFP to make Raspbian,
> 
> all because someone wanted an extra 20% of speed in the cryptography
> 
> code and in long integer divisions by using the count-leading-zeroes 
> instructions.
> 
> Cheers. Nice one.
> 
> 
> For generic cfarm use, I guess some admin would need to set a chroot running
> 
> on an existng ARM7-with-VFP host and make sshd listen on some port.
> 
> 
> An a user, you may get somewhere with debootstrap --foreign and 
> qemu-arm-system
> 
> to run the Debian (or Raspbian) armhf distro, presumably on the fastest 
> ARM system
> 
> you can find, hoping it uses the native FP instructions.
> 
> 
>      M
> 
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