Topic: Script to lower clock when overheating (Read 2272 times)

Go for it. Also, you will find there is always a better, shorter, or cleaner way of doing things. I think my grep | sed could be made more efficient into one call. Fortunately speed isn't really an issue here.

Thanks for the tip, but after coming this far I think I'm pretty comfortable with writing my own scripts.  I might look at the code for ideas.

Looks neat. Apparently there is Autominer that does stuff like this (and more) based on a collection of scripts.

A nice idea.

I took what you did and extended it for my own purposes.  I'm not at all proficient with shell scripting and have just hacked this together - any criticism is welcome.

Caution: The constants at the beginning are appropriate for my miner and may not be appropriate for yours.  This script should not be run without being read and understood.

{
#!/bin/bash
# Scale the gpu clocks to keep temperature within preset bounds.

clock_step=10
sleep_time=60
card_0_min_temp=76
card_0_max_temp=79
card_0_min_clock=820
card_0_max_clock=970
card_1_min_temp=61
card_1_max_temp=64
card_1_min_clock=900
card_1_max_clock=1050

while :
do
   echo "------"
   echo
   card_0_clock=`aticonfig --adapter=0 --od-getclocks | grep Clocks | awk '{print $4}'`
   card_0_temp=`aticonfig --adapter=0 --od-gettemperature | grep -o [0-9][0-9].[0-9][0-9] | sed 's/\..*$//'`
   card_0_load=`aticonfig --adapter=0 --od-getclocks | grep -o [0-9]*% | sed 's/%//'`
   card_1_clock=`aticonfig --adapter=1 --od-getclocks | grep Clocks | awk '{print $4}'`
   card_1_temp=`aticonfig --adapter=1 --od-gettemperature | grep -o [0-9][0-9].[0-9][0-9] | sed 's/\..*$//'`
   card_1_load=`aticonfig --adapter=1 --od-getclocks | grep -o [0-9]*% | sed 's/%//'`
   echo "card_0_clock =" $card_0_clock
   echo "card_0_temp =" $card_0_temp
   echo "card_0_load =" $card_0_load
   echo "card_1_clock =" $card_1_clock
   echo "card_1_temp = " $card_1_temp
   echo "card_1_load =" $card_1_load
   echo

   if [ $card_0_temp -gt $card_0_max_temp ] && [ $(expr $card_0_clock - $clock_step) -ge $card_0_min_clock ]
      then echo "Card 0 is too hot; attempting to lower the clock speed."
      aticonfig --adapter=0 --od-setclocks=$(expr $card_0_clock - $clock_step),0
      echo
   fi
   if [ $card_0_load -gt 50 ] && [ $card_0_temp -lt $card_0_min_temp ] && [ $(expr $card_0_clock + $clock_step) -le $card_0_max_clock ]
      then echo "Card 0 is too cold; attempting to increase the clock speed by" $clock_step"MHz."
      new_clock=$(expr $card_0_clock + $clock_step)
      if [ $new_clock -lt $card_0_min_clock ]
         then new_clock=$card_0_min_clock
      fi
      aticonfig --adapter=0 --od-setclocks=$new_clock,0
      echo
   fi
   if [ $card_1_temp -gt $card_1_max_temp ] && [ $(expr $card_1_clock - $clock_step) -ge $card_1_min_clock ]
      then echo "Card 1 is too hot; attempting to lower the clock speed by" $clock_step"MHz."
      aticonfig --adapter=1 --od-setclocks=$(expr $card_1_clock - $clock_step),0
      echo
   fi
   if [ $card_1_load -gt 50 ] && [ $card_1_temp -lt $card_1_min_temp ] && [ $(expr $card_1_clock + $clock_step) -le $card_1_max_clock ]
      then echo "Card 1 is too cold; attempting to increase the clock speed by" $clock_step"MHz."
      new_clock=$(expr $card_1_clock + $clock_step)
      if [ $new_clock -lt $card_1_min_clock ]
         then new_clock=$card_1_min_clock
      fi
      aticonfig --adapter=1 --od-setclocks=$new_clock,0
      echo
   fi

   sleep $sleep_time
done
}

This will keep adjusting your clock down by 20 Hz until it gets under the temperature you set. If it doesn't reach the desired temperature before it gets to the lower bound clock it will turn off your miner. Use at your own risk, generally I would suggest being present whenever you are messing with the clock. However, this was tested by myself and one other person and does what it is intended to do.

looks good, post the one that turns it back on with an adjusted clock speed - otherwise it would just keep getting hot and killing it and cycling through that same process over and over.

This script when left running will check the temperature on your first GPU, and if it is higher than a temperature you choose will clock it down in steps of 20. You will need the latest drivers to clock outside the stock range. If it doesn't cool before reaching the lowerbound it will kill your miners (python or poclbm). Automated changing of your clocks is not always advisable, but this has been tested to work independently by myself and one other miner. Thanks to Cyis on #bitcoin-mining.


Here is a one-liner that will kill your miners if the temp goes above your chosen temperature. Works for phoenix or poclbm, leave it running in a terminal when you think there may be a risk of overheating. Just change the temp to what you want. I set it to 80 (-gt "80").


If there is interest I can post a version that will turn it back on when it reaches the desired temperature.

Good luck!