antminer s9 set a target temperature?

[jlonghi]

Is it possible to configure bmminer to aim for a target temperature by throttling the antminer?

I see that cgminer as a bitmain-temp parameter but when i do bmminer --help on the antminer this parameter does not seem to show up.

Any ideas?

[Raymond_B]

Is it possible to configure bmminer to aim for a target temperature by throttling the antminer?

I see that cgminer as a bitmain-temp parameter but when i do bmminer --help on the antminer this parameter does not seem to show up.

Any ideas?

You don't want to throttle the hashrate, that's what the fan logic is for.

[jlonghi]

how come?
Is my only option to run the fans at 100% all the time?
In my specific scenario I have a lot of antminers and need to keep my overall temperature low for the time being

[Raymond_B]

how come?
Is my only option to run the fans at 100% all the time?
In my specific scenario I have a lot of antminers and need to keep my overall temperature low for the time being

In my opinion you're going about this wrong.

Generally you address the cooling issue rather than try to modify the miner to run at a lower hashrate. Do you truly see the fans at 100% in the status page? What are your miner temps? Where are you keeping these miners?

[Avalanche_Hosting]

The fans should control themselves based on the chip temps.... If you really want to run it cooler you can flash the firmware and on the first boot you will have the option to change the core frequency.  Try under clocking it a bit.  Then you will run cooler, but less hash rate.  
Hope this helps!

[jlonghi]

The issue is that I have a temporary setup and what happens is my transformer overheats due to poor ventilation and hvac. I wanted to throttle the miners so they consistently run at a temperature that will not overheat my transformer until I get my ventilation and hvac set up. I noticed my miners came with bmminer 2.0.0 so I was considering upgrading to the latest version where they have the option to throttle temp.

[fanatic26]

I am not sure what you are talking about with bmminer. There is no temperature throttling built into the antminers. They hit overheat temperature and just shut off.

[polymer_city2]

Such a thing does exist.

This is how I control my farm.

I can only cool the room so much, and so the frequency is set according to temperature automatically by my software.

[jlonghi]

I was looking on the bmminer-cgminer repo and they had the option
--bitmain-temp      Set bitmain target temperature
but i do not see it even with the latest version of bmminer.

polymer does your software monitor the temperature and then downclock the asics on demand through the API?

[fanatic26]

Such a thing does exist.

This is how I control my farm.

I can only cool the room so much, and so the frequency is set according to temperature automatically by my software.

You are talking about third party software and not the built in bitmain firmware which is what I was talking about.....

[tartoga1]

Now I just love my 2 S9's. They are running on my enclosed porch. I would like to add code to power off the units if I'm away and the temp exceeds a set temperature.

I can use teamviewer to remote to my PC and check, but it would be really nice to not have to worry about it.

I believe the one that runs a little hotter did it's own poweroff, but I would like to lower the target temp ;-)

[Raymond_B]

Now I just love my 2 S9's. They are running on my enclosed porch. I would like to add code to power off the units if I'm away and the temp exceeds a set temperature.

I can use teamviewer to remote to my PC and check, but it would be really nice to not have to worry about it.

I believe the one that runs a little hotter did it's own poweroff, but I would like to lower the target temp ;-)

Look at Awesomeminer it'll do that plus a lot more. The question becomes, how will you turn it back on?