Hacking The KNC Firmware: Overclocking

[ncs0ne]

(...)
trying to add the above, but running into problems...

Restarting Cgminer daemon: /etc/init.d/cgminer.sh: line 134: can't create /: Is a directory

(...)

?!, somehow when I removed the leading space I must have removed 'dev/null' by accident.
Thanks for pointing out, have editited my post above.

Redirect STDOUT to '/dev/null' instead of '/'.


I'm impressed that you have the balls to play around with it.
Please try one module/port (for ex 'if [ "$p" == "0" ]; then' ), only - just in case it doesn't work as expected.
Maybe even restrict testing to one of the four chips on one board, only.

Therefore remove the 'for'-loop and use one value between 0..3 for the core to play with.
Please share your experiences afterwards, thanks in advance!

[1714041487]

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[elasticband]

my KnC units have ROI(yes in BTC not fiat) and more so i am happy to play with them in any way and form.

Really i have no idea what i am doing, but the more i play the more vim cmds i am picking up anyway.

resetting or flashing undo's anything i do in Vi anyway,  otherwise i doubt either of my miners would be working.


edit: really i just want to use bfgminer but still have the ability to OC. I might just give up for now, the extra 70GH i get with my saturn is not worth giving up for bfgminer just now.

[ncs0ne]

Ah, so you have an October unit, thought November one.

I used my modified starter from before for the latest 0.99-2 (October).
Just added the additional bfgminer lines at the top, the start cmd at the end of do_start(), as well as the kill-cmd in do_stop().

Works fine.

*edit:
here's mine

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  #if bfgminer is enabled, this file contains: use_bfgminer="true"
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

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,0x02,0x11" $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 $DESC: "
        do_stop
        do_start
        echo "$NAME."
        ;;
  *)
        N=/etc/init.d/$NAME
        echo "Usage: $N {start|stop|restart|force-reload}" >&2
        exit 1
        ;;
esac

exit 0

[elasticband]

Thank you very much for your help ncs0ne!!

got my 8vrm upto 600 - 610 and running BFG


done the exact same thing to my saturn 4VRM machine but no BFG ever??

[Sonic_AFB]

This is the info of temp and volt's i have after OC

http://imagizer.imageshack.us/v2/1280x1024q90/545/ilc2.jpg
http://imagizer.imageshack.us/v2/1280x1024q90/34/7t1l.jpg
http://imagizer.imageshack.us/v2/1280x1024q90/21/va5z.jpg
http://imagizer.imageshack.us/v2/1280x1024q90/34/x9u8.jpg

Is all fine?

[jelin1984]

Your tempature is a little high

Put some extra cooling at Jupiter

[CYPER]

Your tempature is a little high

Put some extra cooling at Jupiter

Please do not post misleading information. 58 is anything but high temperature.

[elasticband]

i have a board running close to 80c just fine

[jelin1984]

Ok so my fault

[pedrosoft]

Just two questions:
a) max temps ? 70-75-80 Celsius?
b) max watt and amp ?

Thanks  ! 

[crashoveride54902]

Just two questions:
a) max temps ? 70-75-80 Celsius?
b) max watt and amp ?

Thanks  ! 

nobody knows, or you get misleading info from 2 ppl from knc...hno said nothing over 50a is safe n bit..something said 64a is safe..so up to you on who ya believe and i have no idea on safe max temps...but as always the cooler the better

[Ghrindy]

Best settings so far for my oct jupiter (4 VRM):

FW: 0.99.1-tune (oct)
OC: 231
Advanced tuning: None (default from stock version) see "Other findings"

Before OC:
Avg.HR: 560 Gh/s, poolside: 520-530 Gh/s
WU: 8045
HW err%: 3%
Pool rejects%: 0.6%
Watts: 550 W (bertmod)

After OC:
Avg.HR: 650 Gh/s, poolside: 620-640 Gh/s
WU: 9083
HW err%: 5-7%
Pool rejects%: 0.9%
Watts: 680-690 W (bertmod)
ASIC1: 56.0 ℃ , avg 53 Amps
ASIC2: 42.0 ℃ , avg 52 Amps
ASIC3: 61.5 ℃ , avg 56 Amps (highest die: 61 Amps)
ASIC4: 51.5 ℃ , avg 54 Amps
...

small update:

FW: 0.99.2-tune (oct)
OC: 231
Advanced tuning:
* SPI volt: default (1.95)
* SPI freq: default (201442)
* die voltage:

Code:

{ 
  "asic_1_voltage": {
    "die1": "-0.1121",
    "die2": "-0.1121",
    "die3": "-0.1121",
    "die4": "-0.0938"
  },
  "asic_3_voltage": {
    "die1": "-0.1011",
    "die2": "-0.1121",
    "die3": "-0.1121",
    "die4": "-0.0886"
  },
  "asic_4_voltage": {
    "die1": "-0.1121",
    "die2": "-0.1121",
    "die3": "-0.1040",
    "die4": "-0.1069"
  },
  "asic_5_voltage": {
    "die1": "-0.1069",
    "die2": "-0.1121",
    "die3": "-0.1121",
    "die4": "-0.0886"
  },
  "spi_frequency": "201442",
  "spi_voltage": "1.95",
  "auto_spi_voltage": true
}

After OC:
Avg.HR: 660 Gh/s, poolside: 650 Gh/s
WU: 9246
HW err%: 2,6%
Watts: +- 700 W (via advanced-page in 0.99.2)
ASIC1: 56.0 ℃ , avg 55 Amps
ASIC2: 43.0 ℃ , avg 54 Amps
ASIC3: 62.5 ℃ , avg 56 Amps (highest die: 62 Amps)
ASIC4: 52.5 ℃ , avg 55 Amps

tips for OC:
keep an eye on Amps per die (in Advanced-page) and aim for 50-55 Amps range per die.
Then change die-voltage accordingly (2-5 steps on max 2 die's at a time) -> save and restart cgminer
-> wait 2 min. for first impressions -> wait at least 10-15 min to see if performance stabilises! 
(if you OC too much, the first couple min u'll have great results, but after 10 min performance decreases fast)

[mvalley]

Anyone try this on a Nov Saturn? I think the Nov units are high clocked already so I'm not sure if I can squeeze out much more performance from them. My numbers look like this:

ASIC Board    Info
0    

Temperature sensor: 53.0 C
Die ID    Cores ON    Cores OFF    %
0   48   0    100
1   48   0    100
2   48   0    100
3   48   0    100
DC/DC ID    ON/OFF    Status    Input Voltage    Output Voltage    Output Current
0    OFF    OK    11.9 V    0.833 V    24.6 A (20.5 W)
1    OFF    OK    11.9 V    0.835 V    24.6 A (20.5 W)
2    OFF    OK    12 V    0.831 V    24 A (19.9 W)
3    OFF    OK    11.9 V    0.829 V    23.8 A (19.7 W)
4    OFF    OK    11.9 V    0.832 V    23.3 A (19.4 W)
5    OFF    OK    11.9 V    0.828 V    23.4 A (19.4 W)
6    OFF    OK    11.9 V    0.828 V    24.6 A (20.4 W)
7    OFF    OK    11.8 V    0.829 V    24.8 A (20.6 W)
5    

Temperature sensor: 53.0 C
Die ID    Cores ON    Cores OFF    %
0   48   0    100
1   48   0    100
2   48   0    100
3   48   0    100
DC/DC ID    ON/OFF    Status    Input Voltage    Output Voltage    Output Current
0    OFF    OK    11.9 V    0.828 V    25.4 A (21 W)
1    OFF    OK    11.9 V    0.826 V    24.4 A (20.2 W)
2    OFF    OK    11.9 V    0.826 V    24.5 A (20.2 W)
3    OFF    OK    12 V    0.828 V    25 A (20.7 W)
4    OFF    OK    12 V    0.826 V    24.6 A (20.3 W)
5    OFF    OK    12 V    0.828 V    24.3 A (20.1 W)
6    OFF    OK    11.9 V    0.828 V    24.5 A (20.3 W)
7    OFF    OK    12 V    0.829 V    25.2 A (20.9 W)

[Sonic_AFB]

so, with my temps can i try "850.0 211" without much risks?

[elasticband]

so, with my temps can i try "850.0 211" without much risks?

i run 231 on 4vrm and 211 on 8vrm(just started)

[crashoveride54902]

so, with my temps can i try "850.0 211" without much risks?

i run 231 on 4vrm and 211 on 8vrm(just started)

i run 231 on both 4 and 8 vrms modules both are fine

[pedrosoft]

so, with my temps can i try "850.0 211" without much risks?

i run 231 on 4vrm and 211 on 8vrm(just started)

i run 231 on both 4 and 8 vrms modules both are fine

Your temps, amp and watt please ? 

[lenny_]

Hi,

I am using Oct Jupiter with 0.99.1-tune firmware. After I pressed "Reset factory settings" on Advanced tab, I can no longer access Advanced tab at all. Instead I have browser message with "Fetch advanced configuration/status failed." and "OK" button. Restarting, flashing to earlier firmware and flashing back to 0.99.1-tune does not resolved the issue. Jupiter itself is mining away nicely, but I can't access Advanced tab anymore.
Any one had similar problem?

[CYPER]

Hi,

I am using Oct Jupiter with 0.99.1-tune firmware. After I pressed "Reset factory settings" on Advanced tab, I can no longer access Advanced tab at all. Instead I have browser message with "Fetch advanced configuration/status failed." and "OK" button. Restarting, flashing to earlier firmware and flashing back to 0.99.1-tune does not resolved the issue. Jupiter itself is mining away nicely, but I can't access Advanced tab anymore.
Any one had similar problem?

Ctrl+F5?

[jelin1984]

at 0.99.2 firmware does not have these one
how will can do overclocked??




is at the command prompt:

vi /etc/init.d/cgminer.sh

Use the cursor keys on your keyboard to scroll down till you see this code:

Look for the line that says:

cmd=$(printf "0x86,0x%02X,0x01,0xF1" $c)


NOTE: some of the characters at the end (especially the F1) may be different.

The key is the line with the 0x86, when you see that you are on the right line.


change this:

cmd=$(printf "0x86,0x%02X,0x01,0xF1" $c)

to this:


cmd=$(printf "0x86,0x%02X,0x02,0x11" $c)