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Topic: Hacking The KNC Firmware: Overclocking - page 21. (Read 144343 times)

legendary
Activity: 861
Merit: 1000
“Create Your Decentralized Life”
March 31, 2014, 11:15:22 AM
which is the maximum OC for Jupiter October 4 VRMs?

The upper limits vary.

All ASIC may be created equal but the package (heat spreader) and the heat sink vary radically.
I inspected my Artic Coolers and one disassembled itself in my hands.
The others were far ftom flat where it matters.
It is one reason I switched to waterblocks. (main reason is/was fun factor)

The top of the ASIC heatspreader(the part you see with heatsink removed) is not flat.
Thermal compound helps mitigate but not always enough.

I suspect some poor performing die are under dips in the heatspreader.
I will deck and lap my ASICs this week and report if anything improves.
(do not try this at home OR at work, risk is high for contamination)

Fastest die I have with Oct ASIC's is 900 but not all die on ASIC will do that speed.

Enjoy what ya have! Smiley

Your Mileage WILL Vary
Smiley

Might put your window capture advance? volts to see die?
hero member
Activity: 784
Merit: 504
Dream become broken often
March 30, 2014, 04:29:22 PM
which is the maximum OC for Jupiter October 4 VRMs?

i had my 4vrm oct mods going at 261 for a few minutes but the temps was alittle too high for comfort...and that is with heatsinks on them n tons of extra fans n cool room...was also get fault code on one...i run them now at 241...as for my 8vrm mods i can run them safely at 271...but could go higher if i had a bigger psu...that is my limiting factor
sr. member
Activity: 386
Merit: 250
March 30, 2014, 01:09:02 PM
my jupiter every week stuck settings is not seen on the website or come by the KNC ssh or anything, and when this happens runs stock speed, the only way to recover is to turn it off and on again.

Anyone else with him? the temperature does not exceed 50 ° C at any die.

my minign room 24-26ºC

I have also put it in coolers and vrms is giving me 700Gh / s.

Greetings and sorry for the English, google translator

I have similar almost weekly issues.
My solution is restart before issue appears.

The temp reported by miner is NOT die temp.
It is a helpful guide but well cooled VRM could hide a hot die.

as usual
YMMV
Smiley
sr. member
Activity: 386
Merit: 250
March 30, 2014, 12:53:40 PM
which is the maximum OC for Jupiter October 4 VRMs?

The upper limits vary.

All ASIC may be created equal but the package (heat spreader) and the heat sink vary radically.
I inspected my Artic Coolers and one disassembled itself in my hands.
The others were far ftom flat where it matters.
It is one reason I switched to waterblocks. (main reason is/was fun factor)

The top of the ASIC heatspreader(the part you see with heatsink removed) is not flat.
Thermal compound helps mitigate but not always enough.

I suspect some poor performing die are under dips in the heatspreader.
I will deck and lap my ASICs this week and report if anything improves.
(do not try this at home OR at work, risk is high for contamination)

Fastest die I have with Oct ASIC's is 900 but not all die on ASIC will do that speed.

Enjoy what ya have! Smiley

Your Mileage WILL Vary
Smiley
legendary
Activity: 861
Merit: 1000
“Create Your Decentralized Life”
March 30, 2014, 08:48:45 AM
my jupiter every week stuck settings is not seen on the website or come by the KNC ssh or anything, and when this happens runs stock speed, the only way to recover is to turn it off and on again.

Anyone else with him? the temperature does not exceed 50 ° C at any die.

my minign room 24-26ºC

I have also put it in coolers and vrms is giving me 700Gh / s.

Greetings and sorry for the English, google translator
legendary
Activity: 1036
Merit: 1000
Nighty Night Don't Let The Trolls Bite Nom Nom Nom
March 30, 2014, 06:32:06 AM
heat is killing me at the moment. got an extractor set up but still hovering around 28-32c in my mining room. My jupiters don't like being in a room this warm.....

sr. member
Activity: 462
Merit: 250
March 30, 2014, 06:13:01 AM
which is the maximum OC for Jupiter October 4 VRMs?


stable?  if you dont want to babysit them, 241 / 925Mhz is pretty much set and forget
i put heat sinks on my VRMs though for extra no worry


with the weather starting to get warmer, I'll probably look to see what is the best clock at low power to kill the heat a bit

legendary
Activity: 861
Merit: 1000
“Create Your Decentralized Life”
March 29, 2014, 10:50:10 PM
which is the maximum OC for Jupiter October 4 VRMs?
full member
Activity: 157
Merit: 100
March 27, 2014, 10:01:23 PM
My November Jupiter is set at 291, as per the following line in cgminer.sh:

Code:
cmd=$(printf "0x86,0x%02X,0x02,0x91" $c)

Is there a list or chart of values somewhere (ie 0x02,0x91 = 291)? I have good temps (50-60C). How can I push it a bit higher? Thanks.

My list is below
291 would be 1050Mhz

2A comes after 29


Code:
SPEED     setting 
700.0 1B1     372
712.5     382
725.0 1C1     392
737.5     3A2
750.0 1D1     3B2
762.5     3C2
775.0 1E1     3D2
787.5     3E2
800.0 1F1     3F2
812.5             402
825.0 201     412
837.5     422
850.0 211     432
862.5     442
875.0 221     452
887.5     462
900.0 231     472
912.5     482
925.0 241     492
937.5     4A2
950.0 251     4B2
962.5     4C2
975.0 261     4D2
987.5                4E2
1000 271     4F2

the formula is,
 take the first 2 digits,
 convert to decimal (for decimal result),
 multiply by 25Mhz,
 add 25Mhz


EX:
29 hex is 41 decimal

25x41=1025
1025+25 = 1050Mhz clock

YMMV
Smiley

Total hero material. Couldn't have asked for better, thanks tolip!! Cool

*edit: pushed them to 1100Mhz and the machine locked up completely, had to reflash. Backed off to 1075 and it's stable. Thanks again. Smiley

*edit2: well wouldn't you know it, locked up at 1075 too... soo, I'm back where I started. Well worth a try, though.
sr. member
Activity: 386
Merit: 250
March 27, 2014, 05:55:03 PM
My November Jupiter is set at 291, as per the following line in cgminer.sh:

Code:
cmd=$(printf "0x86,0x%02X,0x02,0x91" $c)

Is there a list or chart of values somewhere (ie 0x02,0x91 = 291)? I have good temps (50-60C). How can I push it a bit higher? Thanks.

My list is below
291 would be 1050Mhz

2A comes after 29


Code:
SPEED     setting 
700.0 1B1      372
712.5      382
725.0 1C1      392
737.5      3A2
750.0 1D1      3B2
762.5      3C2
775.0 1E1      3D2
787.5      3E2
800.0 1F1      3F2
812.5              402
825.0 201      412
837.5      422
850.0 211      432
862.5      442
875.0 221      452
887.5      462
900.0 231      472
912.5      482
925.0 241      492
937.5      4A2
950.0 251      4B2
962.5      4C2
975.0 261      4D2
987.5                4E2
1000 271      4F2

the formula is,
 take the first 2 digits,
 convert to decimal (for decimal result),
 multiply by 25Mhz,
 add 25Mhz


EX:
29 hex is 41 decimal

25x41=1025
1025+25 = 1050Mhz clock

YMMV
Smiley
full member
Activity: 157
Merit: 100
March 27, 2014, 02:52:44 PM
My November Jupiter is set at 291, as per the following line in cgminer.sh:

Code:
cmd=$(printf "0x86,0x%02X,0x02,0x91" $c)

Is there a list or chart of values somewhere (ie 0x02,0x91 = 291)? I have good temps (50-60C). How can I push it a bit higher? Thanks.
legendary
Activity: 1568
Merit: 1008
March 27, 2014, 12:35:55 PM
ty.

sr. member
Activity: 386
Merit: 250
March 27, 2014, 11:46:57 AM
Plz help somebody, how to manually set frequencies in v1.0 firmware?
There is no "0x86" lines in new cgminer.sh  Undecided

 Smiley

I use the same file I used with 0.99-1 tune.

If you need the file you can either dig thru this thread for a copy
or downgrade, save file, and upgrade again.

if you go the downgrade method
once downgraded
'cp /etc/init.d/cgminer.sh /config/cgminer.sh'
Then edit it as you like.

YMMV
Smiley


legendary
Activity: 1568
Merit: 1008
March 27, 2014, 10:10:04 AM
Plz help somebody, how to manually set frequencies in v1.0 firmware?
There is no "0x86" lines in new cgminer.sh  Undecided

 Smiley
sr. member
Activity: 280
Merit: 250
March 27, 2014, 08:04:21 AM
somebody can explain me how change cgminer for bfgminer?

You can go to the mining pool page, at the bottom of the page, you can click bfgminer.

But I found that cgminer hash faster on my Jupiter.
member
Activity: 119
Merit: 10
March 27, 2014, 07:53:07 AM
Hi all.

When 1.0 unified firmware was published I immediately tried it. It was ok but my saturn was down to 370gh/s with it. Tried replacing cgminer.sh with old-one but it was always throwing errors on vrms even with mild overclock settings. I thought that there is a conflict on how this firmware interacts with asic clocks and how the old one interacts with asic clocks but now Im not sure.

Nov saturn still stable at 500gh/s but would like to lower voltages to get perhaps a little more out of it=) I have 3 arctic fans in front of asics and heatsinks put on vrms. Clocks are between 361 and lowest is 2E1 I think, each vrm-pair tuned individually.

How to proceed if I want to lower voltages on vrms? By running 1.0 firmware and just using that? Last time this ended quickly with all errors on vrms when trying old cgminer script.

Anybody running old cgminer script with new firmware succesfully?

Thanks in advance



sr. member
Activity: 347
Merit: 250
March 26, 2014, 10:19:34 PM
Simple question: Once I edit my /etc/init.d/cgminer.sh file, how do I restart cgminer to ensure that it's picked up the changes? Will just rebooting it from the menu or web interface work, or is there a specific command-line I should use? Thanks.

"/etc/init.d/cgminer.sh restart"

Will restart cgminer with that cgminer.sh.

Then just "screen -r"



If the miner reboots I think cgminer.sh gets reset so make a backup to the config dir after you are happy with your oc settings.

"cp /etc/init.d/cgminer.sh /config/cgminer.sh.overclocked"

Then if/when you need to reboot the miner just copy that over the reset cgminer.sh script.

"cp /config/cgminer.sh.overclocked /etc/init.d/cgminer.sh"

and run the "/etc/init.d/cgminer.sh restart" command.
full member
Activity: 157
Merit: 100
March 26, 2014, 06:14:56 PM
Simple question: Once I edit my /etc/init.d/cgminer.sh file, how do I restart cgminer to ensure that it's picked up the changes? Will just rebooting it from the menu or web interface work, or is there a specific command-line I should use? Thanks.

If you edit /etc/init.d/cgminer.sh
you must run

'/etc/init.s/cgminer.sh restart'

if you reboot your changes will be lost.

It is recommended to make a copy and store it in /config
(it will still be there after a reboot)

then run it with

'/config/cgminer.sh restart'

YMMV
Smiley
Great, thanks again.
sr. member
Activity: 386
Merit: 250
March 26, 2014, 02:03:01 PM
Simple question: Once I edit my /etc/init.d/cgminer.sh file, how do I restart cgminer to ensure that it's picked up the changes? Will just rebooting it from the menu or web interface work, or is there a specific command-line I should use? Thanks.

If you edit /etc/init.d/cgminer.sh
you must run

'/etc/init.s/cgminer.sh restart'

if you reboot your changes will be lost.

It is recommended to make a copy and store it in /config
(it will still be there after a reboot)

then run it with

'/config/cgminer.sh restart'

YMMV
Smiley
legendary
Activity: 2408
Merit: 1004
March 26, 2014, 07:38:10 AM
how i can install one back up firmware from my jupiter?

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