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Author Topic: Hacking The KNC Firmware: Overclocking  (Read 143150 times)
giletto
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January 22, 2014, 05:50:06 AM
 #481

thx for sharing temen!

My experience on a November Jupiter with 305 is so far that it works for one board, avg is >700 and temperature is 80+
Enermax 1500W PSU seems not to be sufficient as it is shutting off when I overclock all 4 boards and cgminer starts putting work on them.

I'm running stable at 2B5 and 2C5 with max temperature up to 80 °C and reaching with this ~830GH/s
I'm using "spi-test -s 50000" not the 55000 Mhz value, btw.

I'll leave it for good now and keep watching Smiley
Wow, thanks! Temperature is 80 C and more, is it not quiet dangerous for the boards?  Shocked

The hashing rate sounds nice but the temperature make me worry a bit...how was the temperature in your jupiter before you OC? My miner is 50-62 C already at 678Gh/s speed.

Could you test how much watt the OC jupiter suck at the wall?

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temen
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January 22, 2014, 12:18:44 PM
 #482

Hi everybody, waiting for donations  Grin

please use bertmod to see individual vrm stats.

Please keep in mind that i put the front blowers to different place, they aim straight to boards themselves. I also removed the bent-metal part that supplies airflow to beaglebone. Don't know if this has any effect on beaglebone in the long run. I put heatsinks on vrms, took the yellow tape off, cleaned with cleaner + acetone and put arctic silver thermal adhesive, as I didnt want to risk heatsinks "moving" and falling of from vrms. Temperature sensor wont give you correct reading, you can only watch if faults start to appear on vrm's.

Im having one issue at the moment, current readings from other asic have started to fall down. Hashing drops some, but not quite that much.

Yesterday I started to reverse engineer VRM voltage setting, but didnt have guts to try anything yet. On BMR464 manual it says that the output "master" voltage is set with resistor, but you can go like 15% higher by accidently issuing wrong command. Hope that this doesnt kill the asic=)

Im not to blame if it dies, please remember!
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January 22, 2014, 05:55:11 PM
 #483

thx for sharing temen!

My experience on a November Jupiter with 305 is so far that it works for one board, avg is >700 and temperature is 80+
Enermax 1500W PSU seems not to be sufficient as it is shutting off when I overclock all 4 boards and cgminer starts putting work on them.

I'm running stable at 2B5 and 2C5 with max temperature up to 80 °C and reaching with this ~830GH/s
I'm using "spi-test -s 50000" not the 55000 Mhz value, btw.

I'll leave it for good now and keep watching Smiley

You're running at 80C without any failing VRM's? When I overclocked a Nov Jupiter a few VRM's started failing after temps passed 65C. I'm going to try again when I have time to take the cases off and point an external fan on them since it ran fine for about 15 minutes at lower temp...
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January 22, 2014, 07:01:11 PM
 #484

thx for sharing temen!

My experience on a November Jupiter with 305 is so far that it works for one board, avg is >700 and temperature is 80+
Enermax 1500W PSU seems not to be sufficient as it is shutting off when I overclock all 4 boards and cgminer starts putting work on them.

I'm running stable at 2B5 and 2C5 with max temperature up to 80 °C and reaching with this ~830GH/s
I'm using "spi-test -s 50000" not the 55000 Mhz value, btw.

I'll leave it for good now and keep watching Smiley

Can you share the vlock values and corresponding Mhz.
Also what file do you alter and what are the required changes?

Thank you.

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January 22, 2014, 09:48:26 PM
 #485

Hi everybody, waiting for donations  Grin

please use bertmod to see individual vrm stats.

Please keep in mind that i put the front blowers to different place, they aim straight to boards themselves. I also removed the bent-metal part that supplies airflow to beaglebone. Don't know if this has any effect on beaglebone in the long run. I put heatsinks on vrms, took the yellow tape off, cleaned with cleaner + acetone and put arctic silver thermal adhesive, as I didnt want to risk heatsinks "moving" and falling of from vrms. Temperature sensor wont give you correct reading, you can only watch if faults start to appear on vrm's.

Im having one issue at the moment, current readings from other asic have started to fall down. Hashing drops some, but not quite that much.

Yesterday I started to reverse engineer VRM voltage setting, but didnt have guts to try anything yet. On BMR464 manual it says that the output "master" voltage is set with resistor, but you can go like 15% higher by accidently issuing wrong command. Hope that this doesnt kill the asic=)

Im not to blame if it dies, please remember!

Thanks again. You'll receive a donation from me soon for sure  Wink
Hope others do so as well, because without your balls risking to blow up an asic we still wouldn't know about it.


Ok, did some further testing and measurements.

Notice please, case was off otherwise I'm not able to measure temps.
And I've used an infrared pistol, maybe I can borrow another thing which I can put directly on tiny parts to measure temps.

Standard clock-settings:
859W at the wall
67°C for those tiny blocks next to the voltage regulators
80°C for the voltage regulators (yellow area)
cores in the web-gui stats up to 53°C

no big diff between boards
Code:
DC/DC ID ON/OFF Status Input Voltage Output Voltage Output Current
0 OFF OK 11.8 V 0.829 V 25.2 A (20.9 W)
1 OFF OK 11.8 V 0.829 V 25.4 A (21.1 W)
2 OFF OK 11.8 V 0.827 V 25.3 A (20.9 W)
3 OFF OK 11.9 V 0.828 V 25.4 A (21 W)
4 OFF OK 11.8 V 0.83 V 25.4 A (21.1 W)
5 OFF OK 11.8 V 0.833 V 25.1 A (20.9 W)
6 OFF OK 11.8 V 0.83 V 24.8 A (20.6 W)
7 OFF OK 11.8 V 0.829 V 24 A (19.9 W)


Modified clock-settings:
1098W at the wall
70°C for those tiny blocks next to the voltage regulators
90°C for the voltage regulators (yellow area)
cores in the web-gui stats up to 66°C

For the overclocked one bertmod showed after some time several 'FAULT 4' for the two boards in the back, nevertheless it was hashing very nice.
No clue what this means.
Code:
0 OFF FAULT 4 11.7 V 0.819 V 30.8 A (25.2 W)
1 OFF OK 11.6 V 0.82 V 30.7 A (25.2 W)
2 OFF FAULT 4 11.7 V 0.822 V 31.5 A (25.9 W)
3 OFF OK 11.8 V 0.824 V 31.4 A (25.9 W)
4 OFF OK 11.7 V 0.821 V 30.1 A (24.7 W)
5 OFF OK 11.7 V 0.821 V 30.2 A (24.8 W)
6 OFF FAULT 4 11.7 V 0.823 V 30.7 A (25.3 W)
7 OFF FAULT 4 11.7 V 0.821 V 31.3 A (25.7 W)

BMR series offers a nice feature, btw: "Over temperature protection"
http://www.ericsson.com/ourportfolio/products/bmr464-series


Aaaaannd....here's what you all had been waiting for, I guess.
Gives me peaks in the pool over >850 Smiley

Keep in mind the usual stuff: donate a little to temen, warranty void, blow-up risk, ..

Code:
#!/bin/sh
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

use_bfgminer=
if [ -f /config/miner.conf ]; then
        . /config/miner.conf  
fi
if [ "$use_bfgminer" = true ] ; then
        DAEMON=/usr/bin/bfgminer
        NAME=bfgminer
        DESC="BFGMiner daemon"
        EXTRA_OPT="-S knc:auto"
else
        DAEMON=/usr/bin/cgminer
        NAME=cgminer
        DESC="Cgminer daemon"
        EXTRA_OPT=
fi


set -e

test -x "$DAEMON" || exit 0
echo "k";
do_start() {
        # Stop SPI poller
        spi_ena=0
        i2cset -y 2 0x71 2 $spi_ena

        good_ports=""
        bad_ports=""

        # CLear faults in megadlynx's
        for b in 3 4 5 6 7 8 ; do
                for d in 0 1 2 3 4 5 6 7 ; do
                        i2cset -y $b 0x1$d 3 >/dev/null 2>&1 || true
                done
        done

        for p in 0 1 2 3 4 5 ; do
                i2cset -y 2 0x71 1 $((p+1))
                good_flag=0
                ar="$(spi-test -s 50000 -OHC -D /dev/spidev1.0 0x80,3,0,0,0,0,0,0 | tail -c 13)"
                if [ "x$ar" = "x00 30 A0 01" ] ; then
                        good_flag=1
                fi
                ar="$(spi-test -s 50000 -OHC -D /dev/spidev1.0 0x80,2,0,0,0,0,0,0 | tail -c 13)"
                if [ "x$ar" = "x00 30 A0 01" ] ; then
                        good_flag=1
                fi
                ar="$(spi-test -s 50000 -OHC -D /dev/spidev1.0 0x80,1,0,0,0,0,0,0 | tail -c 13)"
                if [ "x$ar" = "x00 30 A0 01" ] ; then
                        good_flag=1
                fi
                ar="$(spi-test -s 50000 -OHC -D /dev/spidev1.0 0x80,0,0,0,0,0,0,0 | tail -c 13)"
                if [ "x$ar" = "x00 30 A0 01" ] ; then
                        good_flag=1
                fi

                if [ "$good_flag" = "1" ] ; then
                        good_ports=$good_ports" $p"
                else
                        bad_ports=$bad_ports" $p"
                fi
        done

        if [ -n "$good_ports" ] ; then
                for p in $good_ports ; do
                        # Re-enable PLL
                        i2cset -y 2 0x71 1 $((p+1))
                        for c in 0 1 2 3 ; do
                                cmd=$(printf "0x84,0x%02X,0,0" $c)
               spi-test -s 50000 -OHC -D /dev/spidev1.0 $cmd >/dev/null
               cmd=$(printf "0x86,0x%02X,0x02,0x85" $c)
               spi-test -s 50000 -OHC -D /dev/spidev1.0 $cmd >/dev/null
               cmd=$(printf "0x85,0x%02X,0,0" $c)
               spi-test -s 50000 -OHC -D /dev/spidev1.0 $cmd >/dev/null
                        done

                        # re-enable all cores
                        i=0
                        while [[ $i -lt 192 ]] ; do
                                i2cset -y 2 0x2$p $i 1
                                i=$((i+1))
                        done
                        spi_ena=$(( spi_ena | (1 << $p) ))
                done

        fi

        if [ -n "$bad_ports" ] ; then
                for p in $bad_ports ; do
                        # Disable PLL
                        i2cset -y 2 0x71 1 $((p+1))
                        for c in 0 1 2 3 ; do
                                cmd=$(printf "0x84,0x%02X,0,0" $c)
                                spi-test -s 50000 -OHC -D /dev/spidev1.0 $cmd >/dev/null
                        done

                        # disable all cores
                        i=0
                        while [[ $i -lt 192 ]] ; do
                                i2cset -y 2 0x2$p $i 0
                                i=$((i+1))
                        done
                        spi_ena=$(( spi_ena & ~(1 << $p) ))
                done
        fi

        # Disable direct SPI
        i2cset -y 2 0x71 1 0

        # Enable SPI poller
        i2cset -y 2 0x71 2 $spi_ena

        start-stop-daemon -b -S -x screen -- -S cgminer -t cgminer -m -d "$DAEMON" --api-listen -c /config/cgminer.conf $EXTRA_OPT
}

do_stop() {
        killall -9 bfgminer cgminer 2>/dev/null || true
}
case "$1" in
  start)
        echo -n "Starting $DESC: "
        do_start
        echo "$NAME."
        ;;
  stop)
        echo -n "Stopping $DESC: "
        do_stop
        echo "$NAME."
        ;;
  restart|force-reload)
        echo -n "Restarting $DESC: "
        do_stop
echo "cooling down for 60s.."
sleep 60 #let it cool down!
        do_start
        echo "$NAME."
        ;;
  *)
        N=/etc/init.d/$NAME
        echo "Usage: $N {start|stop|restart|force-reload}" >&2
        exit 1
        ;;
esac

exit 0

CYPER
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January 22, 2014, 11:10:16 PM
 #486

Thanks. I see that the hex values are different for the November units: 0x02,0xB5
Do you have the rest with their corresponding clocks?

Thank you.

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ncs0ne
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January 22, 2014, 11:46:01 PM
 #487

Thanks. I see that the hex values are different for the November units: 0x02,0xB5
Do you have the rest with their corresponding clocks?

Thank you.

https://bitcointalk.org/index.php?topic=313978.msg4621190#msg4621190

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January 23, 2014, 12:03:01 AM
 #488

FAULT 4

FAULT 4 is a temperature warning, there is about 10F before it will force a complete thermal shutdown. While it is protection you need to be careful running it with a temperature warning since the part will fail and it may not take too long before it does, best to get the temp down some.

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January 23, 2014, 12:06:04 AM
 #489

Thanks. I see that the hex values are different for the November units: 0x02,0xB5
Do you have the rest with their corresponding clocks?

Thank you.

https://bitcointalk.org/index.php?topic=313978.msg4621190#msg4621190

Thanks. Do you know what Mhz is 305?
Also what is the stock value and stock Mhz?

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January 23, 2014, 12:44:48 AM
 #490

FAULT 4

FAULT 4 is a temperature warning, there is about 10F before it will force a complete thermal shutdown. While it is protection you need to be careful running it with a temperature warning since the part will fail and it may not take too long before it does, best to get the temp down some.

Thanks.

I've modified the line, so others do not experience it.
cmd=$(printf "0x86,0x%02X,0x02,0x85" $c)

Doesn't raise FAULT 4, but still gives you ~800 (with case on).

Code:
DC/DC ID ON/OFF Status Input Voltage Output Voltage Output Current
0 OFF OK 11.7 V 0.823 V 29.4 A (24.2 W)
1 OFF OK 11.8 V 0.822 V 29.2 A (24 W)
2 OFF OK 11.7 V 0.822 V 28.5 A (23.4 W)
3 OFF OK 11.7 V 0.82 V 29.3 A (24 W)
4 OFF OK 11.8 V 0.825 V 28.3 A (23.3 W)
5 OFF OK 11.8 V 0.825 V 28.2 A (23.3 W)
6 OFF OK 11.7 V 0.821 V 30.1 A (24.7 W)
7 OFF OK 11.7 V 0.822 V 29.9 A (24.6 W)

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January 23, 2014, 12:58:11 AM
 #491



Doesn't raise FAULT 4, but still gives you ~800 (with case on).

case on. any additional vram-coolers?
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January 23, 2014, 01:54:17 AM
 #492


hi all,

what vents do you use for additional vrm-cooling?

i am considering to get some of those:

http://www.newegg.com/Product/Product.aspx?Item=N82E16811999344

but i dont like that they come with an extra rpm-controller, thats alot of controllers flying around if i put one of those fans at each board...

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January 23, 2014, 02:10:40 AM
 #493


hi all,

what vents do you use for additional vrm-cooling?

i am considering to get some of those:

http://www.newegg.com/Product/Product.aspx?Item=N82E16811999344

but i dont like that they come with an extra rpm-controller, thats alot of controllers flying around if i put one of those fans at each board...



Get the Arctic F12 Wink
http://www.newegg.com/Product/Product.aspx?Item=N82E16835186079

I use F12 + some Megaflows, which I found for a very cheap price: http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&DEPA=0&Order=BESTMATCH&Description=Megaflow&N=-1&isNodeId=1

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January 23, 2014, 02:17:37 AM
 #494


hi all,

what vents do you use for additional vrm-cooling?

i am considering to get some of those:

http://www.newegg.com/Product/Product.aspx?Item=N82E16811999344

but i dont like that they come with an extra rpm-controller, thats alot of controllers flying around if i put one of those fans at each board...



Get the Arctic F12 Wink
http://www.newegg.com/Product/Product.aspx?Item=N82E16835186079

I use F12 + some Megaflows, which I found for a very cheap price: http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&DEPA=0&Order=BESTMATCH&Description=Megaflow&N=-1&isNodeId=1

ok, i was in doubt if those arctics would supply enough CFM.

i guess some adapters are needed to put them straight at the PSU?
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January 23, 2014, 02:23:40 AM
 #495




ok, i was in doubt if those arctics would supply enough CFM.

i guess some adapters are needed to put them straight at the PSU?

before you go spending a bunch of money, did you drop your current fans to the crossbar?


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January 23, 2014, 02:25:31 AM
 #496


hi all,

what vents do you use for additional vrm-cooling?

i am considering to get some of those:

http://www.newegg.com/Product/Product.aspx?Item=N82E16811999344

but i dont like that they come with an extra rpm-controller, thats alot of controllers flying around if i put one of those fans at each board...



Get the Arctic F12 Wink
http://www.newegg.com/Product/Product.aspx?Item=N82E16835186079

I use F12 + some Megaflows, which I found for a very cheap price: http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&DEPA=0&Order=BESTMATCH&Description=Megaflow&N=-1&isNodeId=1

ok, i was in doubt if those arctics would supply enough CFM.

i guess some adapters are needed to put them straight at the PSU?

They supply enough imo. Molex adapters are needed or get a cheap fan controller.

If this post helped you and you feel generous you know what to do: 1P9tXFy9bVgzrfPGeV7F8np26ZtFdCCWvz
ImI
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January 23, 2014, 02:35:32 AM
 #497


hi all,

what vents do you use for additional vrm-cooling?

i am considering to get some of those:

http://www.newegg.com/Product/Product.aspx?Item=N82E16811999344

but i dont like that they come with an extra rpm-controller, thats alot of controllers flying around if i put one of those fans at each board...



Get the Arctic F12 Wink
http://www.newegg.com/Product/Product.aspx?Item=N82E16835186079

I use F12 + some Megaflows, which I found for a very cheap price: http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&DEPA=0&Order=BESTMATCH&Description=Megaflow&N=-1&isNodeId=1

ok, i was in doubt if those arctics would supply enough CFM.

i guess some adapters are needed to put them straight at the PSU?

They supply enough imo. Molex adapters are needed or get a cheap fan controller.

thx! lets go and clock those things!
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January 23, 2014, 05:23:03 AM
 #498

here:

https://bitcointalk.org/index.php?topic=313978.msg4621190#msg4621190

Hi

My procedure is as follows:

Get some aluminium heatsinks ( I used old graphics card-heatsinks from recycling center, sawed each to 4 pieces so I had 16 heatsinks).

Remove yellow stickkers from vrm, clean well. I used acetone to wipe them clean.

Glue these heatsinks to VRM.s using some stuff meant to conduct heat and bond together. I used arctic silver thermal adhesive.

Those VRMs that are under the aluminium bar I chopped this "rubber thingie" in half and insert that also in the front VRM under the metal bar.

Remove that "airflow" director metal piece thats screwed with 2 screws to asic-bar.

Screw those "case-fans" off, and reposition them in front of the asic-fan, leaning towards them in like 30 degree angle. This is not so easy but they have couple of positions suitable that they dont hit the other fan and when the case is on its easier to mount them "safely". I havent used any stuff that keeps them in place, they are just leaning there. Now they should be blowing straigth to asic-pcb.

People with jupiter i suggest that the get more fans, and dont screw case fans off as they "force" air in. One doesnt want any circulation to happen here.

FEEL with your hand after the pcb when airflow is feeling maximum after the pcb. Adjust the fan position correspondingly.

Now you just have to find proper value for 0x86 line (Please read the post I linked)

Current status:

Im hashing at 479GH/s second not with 2 ASIC-modules. The strange thing is that other board dropped it's amps to 24 but no change in hashing rate! I don't know what happened but my temps are now 34 and 44 degrees on temp sensors.

It says Im using 380 watts on the bertmod with this 479GH  Grin

Im running 335 i I recal.

Jupiters could go as high as 1 TH/s with PROPER cooling, mine is like "DIY-version" with heatsink with footprint of 2x2 and 2x3 cm.

If you find that ORIGINAL-post useful, please donate=) Couple of heartstopping moments with this shit, before anything useful came out of it!   Grin Im sending some to Uski and this guy who found this 0x86 register stuff. I just found "correct" settings.

Do I have the FASTEST SATURN on the planet at the moment?!  Wink


 


mxz280
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January 23, 2014, 07:30:16 AM
 #499


Jupiter installed 16 such heat sink 20mm x 15mm x 15mm, now 630GH / s.
pedrosoft
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January 23, 2014, 08:53:49 AM
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and so for october jupiter.... max 0x86 line value ? I think that 211 is the safiest with cooled vrms. I could push more Jup ? Any suggestions ?
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