Braiins OS & Braiins OS+ custom ASIC firmware: optimize performance & efficiency

[peoples]

Flashed the braiins-os on some S9 for testing. First quick questions:

1) No Fan information available ?
2) Does braiins-os has emergency power off by overheat or  broken fan detection ?
3) how to write braiin os to nand when already booted with sdcard ?

Thanks

[1714913562]

1714913562

[Bitcguru77]

is the firmware setting the "Recommended voltage" automatically?

or the voltage should be manually changed as recommended?

Hi.

If you set a certain frequency you can se a recommended voltage in the voltage-field and i believe that's the voltage Braiins sets it to.

I was confused because as I was increasing the frequency the recommended voltage dropped.

After this I set the frequency per board to the same as Bitmain's autotune set it before. The recommended voltages then were 9, 9 and 9.1. I locked the voltages to this and started to increase frequency step by step. I think this was a good basepoint.

I'm sure that the best setting is different for each miner and also dependent of if you have AsicBoost enabled or not (enabled in my case), but for me this worked out well. You can find my results earlier in this thread. There might also be a better setting for my miner, but in my case I seemed to get the best results (speed, power usage and error count taken into the calculations) when setting the same frequency on all boards and adjusting voltage until I got the same speed (+/- 100 GH/s) from each board.

Remember that overclocking is completely at your own risk which is also stated in Braiins-OS.

BR.
Steff

I tried reflashing an S9 using upgrade2bos.py. Seemed to work flawlessly - It completed by printing "Content of U-Boot configuration:", states that "Upgrade was successful!", and "Rebooting..." After quite some time I am still unable to access it via browser or SSH. It shows up on my router and is definitely drawing power.

What am I missing here? Is there a specific port?

Thanks.

Try to check if you ip has changed.

This happened to me when temporarily switching from Braiins to Autotune and S9 connected to router with DHCP enabled. When switching back to Braiins the IP also switched back.

This happened even though I had the S9:s mac-address set in uEnv.txt on SD-card.

You might also want to try to delete the history in your web-browser.

BR.
Steff

[AnonyMustard]

Thanks for getting me looking in the right place. It seems to have been an issue with my router. The router showed the miner at the old IP. I found the miner's real address using an IP scanner, an address that didn't show up in the router, but still couldn't connect to it. Restarting the router did the trick.

[sohail289]

bunch of other options and why no fan settings? is there any way to custom fan setting? im using it with sd card on my s9 13.5

[House Xylander]

Currently, I have three S9s that the fans are revving up and down every minute or so. All three are running off the SD image.

I only ever had this happen once before on an older S9 13.5 and just moved it down the line and set to fans 100%

Has anyone found a way to set or adjust the fans? I am hoping for an easy resolution and not have to pull them from the site.

[Apprentice]

[...]

with the latest version you can change the MAC address and it is saving it even when you reboot. The same goes for the CGminer settings (am taking about running it from the SD card).
So you can change the MAC address and reserve an IP from the DHCP on the router.

[jfaubin]

Hi,

I wou;d download Brain os, but i receive an error 520 on all files located in : https://feeds.braiins-os.org/

Do you have another mirror?

[sergw]

after installing brains os, i do not see chip temps. it shows - 0 for all hashplates, anybody faced the same? btw this is s9 13.5T from apr-2017 batch.

I've restored to factory on a couple with no issues.  Having one with this problem now though.  

[...]

This kills the web interface but SSH is still fine.  I try to run the script again and get this.

[...]

I can reboot and everything is as it was for Braiins, but can't get back to original firmware.
Not sure where to put bug reports for this but ayyyy.  Here ya go.

I have the same issue, have you managed to recover it to original firmware or restore braiins os?

[spartadata]

Has anyone produced a detailed video tutorial on backing up stock firmware onto sd then performing the Braiins firmware update on an Antminer S9? This will be most aidfull to new miners...

a blog step by step or video I am sure will generate good traffic is made... please share any such tuts...

[Raize]

I wou;d download Brain os, but i receive an error 520 on all files located in : https://feeds.braiins-os.org/

Do you have another mirror?

Similar to jfaubin, I am also having issues with Cloudflare Kansas City errors when downloading the .ASC file. At some point it appears the hosted firmware file itself started working, but the .ASC file still is not.

[pipcrypdoh]

I have the same issue, have you managed to recover it to original firmware or restore braiins os?

No nobody has really had a solution for me yet.  I've just been making notes of which ones currently, then I'll come back to it.


Trying to make sense of the git directions for custom config/deployment.  Is it possible to just add a password, worker username and preset chain freq/volt?

[sergw]

No nobody has really had a solution for me yet.  I've just been making notes of which ones currently, then I'll come back to it.

i tried to dig into upgrade2bos.py script, and looks like it is possible to re-install it by commenting backup and prep functions:

Code:

def main(args):
    print("Connecting to remote host...")
    with SSHManager(args.hostname, USERNAME, PASSWORD) as ssh:
        # check compatibility of remote server
        check_compatibility(ssh)

#        if not args.no_backup:
#            backup_firmware(ssh)  [b]<-- comment out[/b]

        # prepare target directory
        ssh.run('rm', '-fr', TARGET_DIR)
        ssh.run('mkdir', '-p', TARGET_DIR)

        # upgrade remote system with missing utilities
        if os.path.isdir(SYSTEM_DIR):
   #         prepare_system(ssh)  [b]<-- comment out[/b]

[pipcrypdoh]

i tried to dig into upgrade2bos.py script, and looks like it is possible to re-install it by commenting backup and prep functions:

[...]

Without getting into my reasons of why I or someone else wouldn't want particular miners on braiins (few cards hashing at 5+k TH/s... mmk).  Anyways, the miner can just be restarted and bring back the gui as well as cgminer.  Reinstall isn't going to help thwart off the original issue of downgrading back to bitmain firmware.  I'll probably just end up going the sd card route anyways as I accidentally changed the wrong config line and bricked 3 miners... Whoops.

[JW2703]

HI,

Chain 1 didn´t do any change in hasrate. I tried a few frequenzes but it doesn´t go more than 4.5 th/s. The other two boards working well with 775M and 8.7 Volt, round about (4.9 th/s and 5.4 th/s)

Any ideas?

[sergw]

Without getting into my reasons of why I or someone else wouldn't want particular miners on braiins (few cards hashing at 5+k TH/s... mmk).  Anyways, the miner can just be restarted and bring back the gui as well as cgminer.  Reinstall isn't going to help thwart off the original issue of downgrading back to bitmain firmware.

i agree, rollback to bitmain fw should work flawlessly, otherwise you get bricked device and need somehow to restore fw.


pretty interesting, after installing brains os, one of my S9 shows ~100 C temp however board temp is normal, anybody faced same issue?

https://i.imgur.com/p0qZPov.png

[papampi_2]

I just tested latest braiins on an S9i 14 Th/s to see how it goes
Every thing is perfect and works smooth.

Need a little help understanding the frequency and voltage relations

Default frequency shows 650 M with 8.8 V
When I raise freq to any higher value, recommended voltage goes down to 8.7V,

Set it to 700 and recommended voltage shows 8.7
And when lowering freq, voltage goes high So when I set it to 600M it goes to 9.0V

Doesnt raising freq should need higher power and raise voltage ?
Any way to calculate power draw (W) from voltage?

pretty interesting, after installing brains os, one of my S9 shows ~100 C temp however board temp is normal, anybody faced same issue?

https://i.imgur.com/p0qZPov.png

Can I ask whats the program you use to get all those details in that simple page?

[Apprentice]

I just tested latest braiins on an S9i 14 Th/s to see how it goes
Every thing is perfect and works smooth.

Need a little help understanding the frequency and voltage relations

Default frequency shows 650 M with 8.8 V
When I raise freq to any value higher recommended voltage goes down to 8.7V,

Set it to 700 and recommended voltage shows 8.7
And when lowering freq, voltage goes high So when I set it to 600M it goes to 9.0V

Doesnt raising freq should need higher power and raise voltage ?
Any way to calculate power draw (W) from voltage?

same thing here. I know voltage should increase with overclocking. noticed that when increasing he voltage, I am getting higher hashrate.
Did check the kernel of the bitmain firmware and voltages for the 14T is 8.9/9V.

[papampi_2]

same thing here. I know voltage should increase with overclocking. noticed that when increasing he voltage, I am getting higher hashrate.
Did check the kernel of the bitmain firmware and voltages for the 14T is 8.9/9V.

Thanks for confirming, thought I'm missing some thing
Hopefully some one will shed some light on the matter

[Apprentice]

What's the hashrate at 700?

[papampi_2]

What's the hashrate at 700?

At 700M + 8.7V got to 14.85 Th/s and at 725M + 8.7V got to 15.2 Th/s
Temperature was around 80C and fans was working with much lower speed than default.
No idea if its possible to calculate power draw from voltage or I should get a separate power meter to check that.