Hacking The KNC Firmware: Overclocking

[pedrosoft]

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 ?

currently running with 4C2 for my coolest chip...pretty sure i'm gonna push it some more after I install heatsinks on the vrms (currently they are 'just' actively cooled by 4 dedicated 80mm fans)

I'm lost in this thread... 4C2 ?

[pedrosoft]

the list again for reference

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

4C2 equals 967.5 MHz or ~ 185.76 GH per Asic (theoretical)

Your opinions ... On October Jupiter max Safe Mhz setting ?

[crashoveride54902]

the list again for reference

4C2 equals 967.5 MHz or ~ 185.76 GH per Asic (theoretical)

Your opinions ... On October Jupiter max Safe Mhz setting ?

tons of mixed info...you decide what you think...KNC engineer HNO in IRC said no more then 50a per vrm or 200a per board is safe...bitromia or something from knc sales said 64a per vrm is safe...so if you believe hno at 50a then 211 would be your safe max...and if ya believe da bit guy then hell you could probably get 261 outta it...depending also how cool you keep the vrm...stock cooling with cover on you probably won't get very far before temps get too high

I have copper heatsinks on vrms n extra fans in there to help with cooling

[ImI]

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 ?

currently running with 4C2 for my coolest chip...

how do you run different clocks on different boards??

[DPoS]

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 ?

currently running with 4C2 for my coolest chip...

how do you run different clocks on different boards??

its in the pudding... dig deeper in the thread.. lots of good stuff

[mekadeka]

Hello, everyone.

I have a problem to solve. Maybe some of you are experiencing this, too:

My OC'd Saturn machine is hashing at a much higher rate than BTCGuild is reporting. I tried resetting the worker to clear stats, but it's still reporting as much lower than the machine itself is reporting.


MORE DETAILS:
----------

I succeeded at least in overclocking on paper and have been running overnight. There are still at least several things I'm unclear on, such as how to get wizkid's cgminer in place, but those will come in a bit, I guess.

Does anyone know why my Saturn is reporting a significantly lower hashrate than at BTC? The Saturn GUI is reporting 326ghs, but poolside BTCGuild hasn't budged above 292. That's quite a difference and not markedly better from my un-OC'd machine.

I tried resetting my worker stats, but that doesn't seem to have done anything either. BTCGuild is reporting 0.13% rejects.

My machine:
October version Saturn
Running 99.1-tuning
OC'd to 231

In SSH as of this moment, the Saturn is showing 329.3G/325.8Gh/s. Still a long way off from 292.

Does anyone know what this issue might be?
 

[redbluebg]

Hello, everyone.

I have a problem to solve. Maybe some of you are experiencing this, too:

My OC'd Saturn machine is hashing at a much higher rate than BTCGuild is reporting. I tried resetting the worker to clear stats, but it's still reporting as much lower than the machine itself is reporting.


MORE DETAILS:
----------

I succeeded at least in overclocking on paper and have been running overnight. There are still at least several things I'm unclear on, such as how to get wizkid's cgminer in place, but those will come in a bit, I guess.

Does anyone know why my Saturn is reporting a significantly lower hashrate than at BTC? The Saturn GUI is reporting 326ghs, but poolside BTCGuild hasn't budged above 292. That's quite a difference and not markedly better from my un-OC'd machine.

I tried resetting my worker stats, but that doesn't seem to have done anything either. BTCGuild is reporting 0.13% rejects.

My machine:
October version Saturn
Running 99.1-tuning
OC'd to 231

In SSH as of this moment, the Saturn is showing 329.3G/325.8Gh/s. Still a long way off from 292.

Does anyone know what this issue might be?
 

My october mercury with 2 added modules(total 3) runs way better with 211 - around 485 GH/s, with 231 there are a lot of disabled cores and is hashing with no more than 300 GH/s. Try 211 for some time.

[mekadeka]

 
[/quote]

My october mercury with 2 added modules(total 3) runs way better with 211 - around 485 GH/s, with 231 there are a lot of disabled cores and is hashing with no more than 300 GH/s. Try 211 for some time.
[/quote]


Thanks for the reply. What other mods do you have going? Are you running bertmod and wizkid's cgminer? What pool are you using?

I had 211 going last night before I spun things up a bit. It reported at around 310G. I'll try it again, but I'm not sure why stepping down would help...

[merv77]

Hello, everyone.

I have a problem to solve. Maybe some of you are experiencing this, too:

My OC'd Saturn machine is hashing at a much higher rate than BTCGuild is reporting. I tried resetting the worker to clear stats, but it's still reporting as much lower than the machine itself is reporting.


MORE DETAILS:
----------

I succeeded at least in overclocking on paper and have been running overnight. There are still at least several things I'm unclear on, such as how to get wizkid's cgminer in place, but those will come in a bit, I guess.

Does anyone know why my Saturn is reporting a significantly lower hashrate than at BTC? The Saturn GUI is reporting 326ghs, but poolside BTCGuild hasn't budged above 292. That's quite a difference and not markedly better from my un-OC'd machine.

I tried resetting my worker stats, but that doesn't seem to have done anything either. BTCGuild is reporting 0.13% rejects.

My machine:
October version Saturn
Running 99.1-tuning
OC'd to 231

In SSH as of this moment, the Saturn is showing 329.3G/325.8Gh/s. Still a long way off from 292.

Does anyone know what this issue might be?
 

you have to minus the percentage of errors and rejected shares from your hash rate to get hash rate that pool should show.

eg.  if your hash rate is 300GH/s and you have 2% errors and 1% rejected then 300-9 = 291GH/s

[pedrosoft]

max stable performance for october jupiter ?

[Biffa]

max stable performance for october jupiter ?

I've seen 650-670 in really well cooled environments

[pedrosoft]

max stable performance for october jupiter ?

I've seen 650-670 in really well cooled environments

1 or more fan(s) per board ?

[temen]

@mekadeka: I noticed that when using wizkid cgminer I can't get past 429 with saturn at the pool =( It shows as high as 500GH/s on SSH-interface but pool doesnt go there ever.

I noticed that sometimes I start 2 instances of the miner (I dont know how this is possible) the other being 3.9 and I thought that this would be the reason but it wasnt that either.

Now Im running 33-34 amps /vrm. Total power 441 watts, 479GH/s  

Setting is 325 for this.

[pedrosoft]

@mekadeka: I noticed that when using wizkid cgminer I can't get past 429 with saturn at the pool =( It shows as high as 500GH/s on SSH-interface but pool doesnt go there ever.

I noticed that sometimes I start 2 instances of the miner (I dont know how this is possible) the other being 3.9 and I thought that this would be the reason but it wasnt that either.

Now Im running 33-34 amps /vrm. Total power 441 watts, 479GH/s  

Setting is 325 for this.

Have you fans ? Open case ?

[Biffa]

max stable performance for october jupiter ?

I've seen 650-670 in really well cooled environments

1 or more fan(s) per board ?

Just with the stock fans, but adjusted so that they are sitting on the crossbar

[pedrosoft]

max stable performance for october jupiter ?

I've seen 650-670 in really well cooled environments

1 or more fan(s) per board ?

Just with the stock fans, but adjusted so that they are sitting on the crossbar

this position is better for having less temps ? Could you please post images of yout setup ?

[Biffa]

max stable performance for october jupiter ?

I've seen 650-670 in really well cooled environments

1 or more fan(s) per board ?

Just with the stock fans, but adjusted so that they are sitting on the crossbar

this position is better for having less temps ? Could you please post images of yout setup ?

Its not mine, I run mine 100% at stock of course.

[pedrosoft]

thanks ! Don't you think that jupiter clocked on 325 mhz is too dangerous for a long run ?

[CYPER]

thanks ! Don't you think that jupiter clocked on 325 mhz is too dangerous for a long run ?

325Mhz? Where did you get that from?

[pedrosoft]

Setting is 325 for this.

here



SORRY 325 setting no Mhz