Topic: Hacking The KNC Firmware: Overclocking - page 43. (Read 144343 times)

You saying - just copy October cgminer.sh file to November device? Will it work just straight out of the box?
Can you paste your file with description, which frequencies you've been using on November device?

I think the asic is not warming up as much as the vrm's. Tried it by hand, vrms u couldn't even keep your finger on for a moment but on asic heatsink you can=)

Someone asked that november devices have different file. It's true, and you have to copy that cgminer.sh file from this thread some post's back.

Same commands apply I think.

There's this 0x86 line that you want to find.

It's been explained quite a few times so read back those posts, because somebody did tutorial on how to do this.

Myself i have copied that cgminer.sh from the thread to /config/cgminer.sh and there it survives reboots. Then after reboot i copy this to /etc/init.d/cgminer.sh.

And if you don't do any modifications to hardware its quite impossible to achieve this.

My saturn is on floor level, sucking cool air. If I lift it to desktop height it starts to show fault 4. So it's on the edge.

Ok mate but where to put that code? November devices have completely different cgminer.sh file.

Oh.. I think you would ask for it =)

It's November Saturn. Only 2 modules! Corsair RM 850  has started to use it's fan with this mod:)

I took off the metal behind the blowers in the front. Also the fans are repositioned.

gminer3.8.5 didn't do it this time. using 3.9.0.

Here it is. 305 is the code. Don't change the last digit. If you want more, start increasing 315 325 335 345 etc, until 3F5, after that 405 etc. I havent tried past 345.

If you want less use 2F5, then 2E5, then 2D5, 2C5 etc.. going down.

When chancing the value at cgminer.sh start always with /etc/init.d/cgminer.sh.

DON't START WHEN WARM! Let it cool at least 30 seconds.

If you blow it, its your fault. I have added heatsinks, modified blowers to different place etc.

donations accepted=)

BTC: 1BQq86NeKXY9j4qmVx4SKtGSvsEctgfove

Thanks in advance.

Someone knows how to change vrm output voltage from cgminer script?!  If I could lower the volts I could be running excess 500ghs!

No advanced tuning, some cooling done better:


Mining Status
CGMiner Status   Running (pid=4739)
Last Checked   Mon Jan 20 14:57:46 UTC 2014
Avg. Hash Rate   459 Gh/s
WU   6418
Difficulty Accepted   152907
HW Status
ASIC slot #1   46.0 ℃
ASIC slot #2   -
ASIC slot #3   -
ASIC slot #4   -
ASIC slot #5   46.0 ℃
ASIC slot #6   -

Did BertMod help you ? Please help back !
Donations are welcome to 1oHj13eEj1cctkUHzwWq38niBSX13WsSt
Thank you. -- uski

STATUS=S
When=1390229846
Code=11
Msg=Summary
Description=cgminer 3.9.0|SUMMARY
Elapsed=1436
MHS av=459462.58
MHS 5s=463149.23
Found Blocks=0
Getworks=105
Accepted=943
Rejected=0
Hardware Errors=521
Utility=39.40
Discarded=74
Stale=0
Get Failures=0
Local Work=164465
Remote Failures=0
Network Blocks=6
Total MH=659797170.9788
Work Utility=6419.33
Difficulty Accepted=150947.00000000
Difficulty Rejected=0.00000000
Difficulty Stale=0.00000000
Best Share=779416
Device Hardware%=0.3380
Device Rejected%=0.0000
Pool Rejected%=0.0000
Pool Stale%=0.0000|

ASIC Board    Info
0    

Temperature sensor: 46.0 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    11.5 V    0.822 V    32.3 A (26.6 W)
1    OFF    OK    11.5 V    0.823 V    31.6 A (26 W)
2    OFF    OK    11.5 V    0.82 V    32.2 A (26.4 W)
3    OFF    OK    11.5 V    0.823 V    32.4 A (26.7 W)
4    OFF    OK    11.5 V    0.823 V    33.3 A (27.4 W)
5    OFF    OK    11.5 V    0.821 V    33.3 A (27.3 W)
6    OFF    OK    11.4 V    0.823 V    32.2 A (26.5 W)
7    OFF    OK    11.4 V    0.819 V    32.8 A (26.9 W)
4    

Temperature sensor: 46.5 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    11.6 V    0.825 V    33 A (27.2 W)
1    OFF    OK    11.5 V    0.823 V    32.6 A (26.8 W)
2    OFF    OK    11.6 V    0.824 V    32.3 A (26.6 W)
3    OFF    OK    11.6 V    0.822 V    32.4 A (26.6 W)
4    OFF    OK    11.7 V    0.824 V    33.6 A (27.7 W)
5    OFF    OK    11.6 V    0.822 V    33.5 A (27.5 W)
6    OFF    OK    11.6 V    0.822 V    31.9 A (26.2 W)
7    OFF    OK    11.6 V    0.823 V    31.9 A (26.3 W)

Total DC/DC power output: 428 W


Next step would be immersion I think as I can no more avoid FAULT 4 if pushed more.

It has been running like this 2 days now. Added aluminium heatsinks to vrm, took the tape off before applying, cleaned everything up with acetone.  Arctic silver adhesive (expensive but its like glue), adjust the "income" fans so they are next to asics, leaning "down" pushing air through asic-boards and vrms. There wasn't any "heat transfer" rubber on the "front" vrm so cut half the back rubber thats on "last" vrm and inserted that in between the metal and vrm.

Tried reversing airflow on asics as I tought that it would be better to be sucked in rather than blown out. This didn't work.

Number of shares in this example is low because I once more tried to push it and had to restart.

I have driven 500gh/s for couple of minutes! Then shit starts to happen =). My worker wont show this because I split power to 2 pools, bitparking long round is annoying to say at the least.

Oil tank, I will be searching for you!

every machine requires different tweaking, other peoples results give a base line of where to start trying though.


8vrm for me = 3.3spi 1755428mhz. ranges from 0.07 - 0.1 volts each Die. ranges above 50a and 40w

Currently getting 640GH/s 650w (without cntrl board) and 0.91% HW .

4vrm is completely different.

This definitely shows the general process however there is a lot of variability in the units.. For example a number of them can do 211 without any voltage changes, others like yours require a fairly heavy set of modifications. The point is to take an easy and not just jump to the top voltage wise..

HELL YEA! After 2 hours I was able to overclock my 8VRM unit with 211. SPI 3.3V 256kHZ and now ne magic behind this. You just have to find a good value for each DIE to get ~50A.

1. edit cgminer.sh with '211'
2. restart cgminer '/etc/init.d/cgminer.sh restart'
3. give it a minute and have a look at the advanced tab.
4. write down wich DIEs don't reach the 50A.
5. give each die more volt. 0.0748 seems to be a good starting point. but to be sure go up at lower steps.
6. now restart again cgminer. only at this point you will see if you where successful.
7. did you reached 50A/DIE? | no? -> restart from point 2. | yes? have fun!

i am not responsible for anything

hi,

https://bitcointalksearch.org/topic/m.4425943

have 99.1 tune, too

4vrm asic dies -0,1003 volts each
each VRM got  VRAM heatsinks and i have a big fan over the Jupiter

help, because 231 have much less power than a 201? as I can get to 670-680GH?

October 4 asics jup

help please

extra cooling?

i have avg 12h at eligius pool ~680Gh/s with only 50-55amps. 4 asics oct jup and 231 setting.

that's some serious clockin..   reminds me of the first week we got them and all the heat issues

58-61.5

at what amps?

I now have my 6-module Oct Jupiter running stable @ 1026GH/s  . The key was temperature for me. I lose cores left and right with another 5 degrees Celsius. I placed a box fan blowing air downward and my HW errors dropped to < 0.5% and all cores stay active.

hi, for my jupiter 4vrm October with OC to 201 with 211 going well and gives less performance that has 201? when would have to give more power.
the firm is 0.99.1tune.

regards

Corsair AX1200

Seems to work pretty well with 265 on nov saturn cgminer 3.9.0. Total output according to bertmod = 351W (+20W from OEM). 25-28A current/VRM.
Hashrate varying between 350-370 but it's for sure a speed increse
So far the temps seems to stabilize around 46c with 0,15% HW. Amazing!

What does the "spi-test" do really? Running it at 50000 right now.

Edit/update: Avg hashing rate stabilizes at 360Gh/s. + 20 000 shares on BTC Guild (+~12-15%)

Stats:
STATUS=S
When=1390166000
Code=11
Msg=Summary
Description=cgminer 3.9.0|SUMMARY
Elapsed=179569
MHS av=360975.24
MHS 5s=361370.11
Found Blocks=0
Getworks=6576
Accepted=60400
Rejected=407
Hardware Errors=28968
Utility=20.18
Discarded=12597
Stale=0
Get Failures=0
Local Work=15590432
Remote Failures=1
Network Blocks=362
Total MH=64820127467.5121
Work Utility=5042.77
Difficulty Accepted=15155066.00000000
Difficulty Rejected=62756.00000000
Difficulty Stale=0.00000000
Best Share=8287478
Device Hardware%=0.1916
Device Rejected%=0.4158
Pool Rejected%=0.4124
Pool Stale%=0.0000|

Hi its november device.

VRMs are running quite hot, can't keep finger on them at all. This and possible future overclockin in mind I got 4 old graphics cards with small aluminium coolers from recycling center. Cost 10 euros. (They didn't accept bitcoin! ). Sawed these in 4 pieces and got 16 small coolers. Just bonded them with arctic silver adhesive (too expensive).

I quickly checked from the pdf that 0x80 is master clock and 0x86 is divider, if this pdf is related to Perhaps I'll try fidling with the master clock tonight.. Not so sure It always scares the shit out of me when amps to berzerk and everything just.. stops

EDIT: don't know where i did get that 0x80 is master clock, I don't think it is