Swedish ASIC miner company kncminer.com

[FiatKiller]

Well, I've had FM 9.6.1 running all day and I think it's slightly less performance than 9.6.0

It could be that it was not about performance, but more safety or less errors.

I was averaging low 250s and about 3700 WU, now the hashrate is 248 and WU is below
3680. It would reach that low of a WU after about one day before, but hashrate would stay
at 250 or higher.

Although another factor could be that the two previous days were quite a bit colder and it's
in my basement.

[1713438507]

1713438507

[1713438507]

1713438507

[1713438507]

1713438507

[soy]

I don't understand how you are getting .7 out of the VRMs on firmware 0.94.  I'm running 0.94  and have .9+v and don't see .7 unless I run 0.95.

I believe you have to do the secret handshake to get it to switch back to high volts once you go to .95+  

It might need a hard reset or perhaps going to an earlier firmware first..  i kinda forget myself the surefire way of switching them back

I see, you tried 0.96 and then 0.94 gave you the .7 volt VRM output voltage?

Then I'll stick where I am until after the next diff increase and likely beyond that.
KnC 0:   | 151.5G/137.8Gh/s | A:2934673 R:118225 HW:153613 WU:2107.5/m

[docjunior]

Did anyone else's hosted miner go bonkers today? At around 10 UTC there was some downtime, and when I checked the portal, we suddenly had statistics. Ok. But a few hours AFTER that, my miner started to drop its connection to BTCGuild or Bitminter, and never reaching more than 80-90% of the speed it has been running at for days, and then dropping to about 50% speed, fluctuating wildly and also dropping connections the last few hours :-(

Curiously, the hash rate graph on KNCs portal pages say that the miner is running at full speed since around lunchtime, whereas the BTC Guild graph looks like a rollercoaster, with my average hash rate for today less than half what it has been the last week :-((

I guess they have updated the miner firmware, but it was certainly an "upgrade" I wish they hadn't performed in my case. Curious to hear if others have the same symptoms. Hope this change is reversible!

I'm not able to register and post on the KNC forum, hope somebody here - if they have the same problem - can crosspost.

[soapmodem]

Can someone tell me the exact type of cable used to connect the controller board to the asic boards? The ones that go into the 4 asic slots. They're grey with light-grey connectors.

[chrono030]

Did anyone else's hosted miner go bonkers today? At around 10 UTC there was some downtime, and when I checked the portal, we suddenly had statistics. Ok. But a few hours AFTER that, my miner started to drop its connection to BTCGuild or Bitminter, and never reaching more than 80-90% of the speed it has been running at for days, and then dropping to about 50% speed, fluctuating wildly and also dropping connections the last few hours :-(

Curiously, the hash rate graph on KNCs portal pages say that the miner is running at full speed since around lunchtime, whereas the BTC Guild graph looks like a rollercoaster, with my average hash rate for today less than half what it has been the last week :-((

I guess they have updated the miner firmware, but it was certainly an "upgrade" I wish they hadn't performed in my case. Curious to hear if others have the same symptoms. Hope this change is reversible!

I'm not able to register and post on the KNC forum, hope somebody here - if they have the same problem - can crosspost.

I have not had any issues today at all with my miner on Bitminter.

[Aggrophobia]

Can someone tell me the exact type of cable used to connect the controller board to the asic boards? The ones that go into the 4 asic slots. They're grey with light-grey connectors.

http://www.ebay.com/itm/New-Lot-Of-10-Ribbon-Cable-10-Pin-F-To-10-Pin-F-6-/280638835318?pt=LH_DefaultDomain_0&hash=item415760ca76

[soapmodem]

Can someone tell me the exact type of cable used to connect the controller board to the asic boards? The ones that go into the 4 asic slots. They're grey with light-grey connectors.

http://www.ebay.com/itm/New-Lot-Of-10-Ribbon-Cable-10-Pin-F-To-10-Pin-F-6-/280638835318?pt=LH_DefaultDomain_0&hash=item415760ca76

Perfect, thank you kindly.

[mininganon]

I don't understand how you are getting .7 out of the VRMs on firmware 0.94.  I'm running 0.94  and have .9+v and don't see .7 unless I run 0.95.

I believe you have to do the secret handshake to get it to switch back to high volts once you go to .95+  

It might need a hard reset or perhaps going to an earlier firmware first..  i kinda forget myself the surefire way of switching them back

My 8 vrm Jupiter never has the output voltage above .7*v

Is this the case with everyone else with 8 voltage regulators per board? I'm on .94 I've never taken a reading on .93 or .91 so I don't know if its better or worse. I don't want to play either as I'm getting 508gh/s showing on eligius 12hr! Now 24+hr with out reboot as well.

[soy]

I don't understand how you are getting .7 out of the VRMs on firmware 0.94.  I'm running 0.94  and have .9+v and don't see .7 unless I run 0.95.

I believe you have to do the secret handshake to get it to switch back to high volts once you go to .95+  

It might need a hard reset or perhaps going to an earlier firmware first..  i kinda forget myself the surefire way of switching them back

MY 8 vrm Jupiter never has the output voltage above .7*v

Is this the case with everyone else? I'm on .94 I've never taken a reading on .93 or .91 so I don't know if its better or worse. I don't want to play either as I'm getting 508gh/s showing on eligius 12hr! Now 24+hr with out reboot as well.

Can't answer your question but I did test all 0.90-0.95 looking to see where the voltage dropped and saw the last .9v was .094.

[soy]

I hear the figure 30PH/s tossed around for this coming January.  Then to stay current we need to buy 10x the hashing power we have now.  Ouch.

to stay current, you need to double the amount of your miners with every difficulty rise

                             

Double? Impossible of course. 

But looking at hashrate versus earnings, double the hashrate and halve your earnings for a given hashrate.  So, if the network hashrate hits 30PH/s in January and it's well over 3PH/s right now, then just to stay even one would need at least 10x the hashrate just to earn the BTC one earned today. 

Get that?  What's impossible even with the 10x scenario is that it will only earn the same BTC/day that one is earning now - and how much would it cost to increase one's hashrate ten times?  And to get delivery in January, when would one need slap down the coin for the equipment purchase?

[btcusr]

900+ pages.

[DPoS]

I see, you tried 0.96 and then 0.94 gave you the .7 volt VRM output voltage?

a hard reset and power cycle brought it back to high voltage again

it is screaming now holding ~525 at BTCGuild  (just think if I had the other 59 cores)

10 min mark:

 Block: ...fac0e16a #265429  Diff:268M ( 1.92Ph/s)  Started: [01:10:24]
 ST:2  F:0  NB:3  AS:0  BW:[ 50/ 34 B/s]  E:2764.94  I:38.45mBTC/hr  BS:141k
 4/709  50.0C | 571.0/504.2/506.6Gh/s | A:167 R:10+0(5.6%) HW:6766/6.8%
--------------------------------------------------------------------------------
 KNC 0: 46.0C | 142.5/136.8/133.8Gh/s | A: 45 R: 3+0(6.2%) HW:1140/4.4%
 KNC 1: 43.0C | 142.2/135.6/133.4Gh/s | A: 41 R: 6+0( 13%) HW:3804/ 12%
 KNC 2: 42.0C | 134.8/129.1/134.5Gh/s | A: 45 R: 0+0(none) HW:1112/4.5%
 KNC 3: 50.0C | 106.2/102.7/104.3Gh/s | A: 36 R: 1+0(2.7%) HW: 712/3.7%
--------------------------------------------------------------------------------

20 min mark:

 Block: ...fac0e16a #265429  Diff:268M ( 1.92Ph/s)  Started: [01:10:24]
 ST:2  F:0  NB:3  AS:0  BW:[ 48/ 34 B/s]  E:2903.21  I:39.55mBTC/hr  BS:141k
 4/709  50.0C | 549.3/511.4/511.0Gh/s | A:272 R:15+0(5.2%) HW:10175/6.4%
--------------------------------------------------------------------------------
 KNC 0: 47.0C | 144.0/138.7/136.6Gh/s | A: 75 R: 4+0(5.1%) HW: 1762/4.2%
 KNC 1: 43.0C | 143.8/137.9/137.8Gh/s | A: 67 R: 8+0( 11%) HW: 5858/ 12%
 KNC 2: 42.0C | 135.6/131.2/131.7Gh/s | A: 73 R: 2+0(2.7%) HW: 1557/4.0%
 KNC 3: 50.0C | 107.7/104.6/105.6Gh/s | A: 58 R: 1+0(1.7%) HW: 1025/3.3%
--------------------------------------------------------------------------------



Observations:

temps are up about 7-10C each board (to be expected)
the one board (KNC 1) that was really low on HW errors when not overclocking, has the highest, while the others are all under 5%  
similar amount of cores as last test (gained that one back to 709)

we'll see how this goes after a few hours...since my temps are still lower than many people's non-overclocked jupiters it looks sustainable. (all 4 VRM boards)   Dropping the fans to the crossbars does help in these situations

I should change the PSU though, it is only an 850watter

Update:  close to an hour and running strong on BTCGuild - 533.87 GH/s 546304 (99.72%) 1536 / 23040 / 0


2nd Update:  4 1/2 hours running

522.88 GH/s  1878016 (99.81%)  3584 / 87552 / 0

 Block: ...3b4de9da #265453  Diff:268M ( 1.92Ph/s)  Started: [05:29:09]
 ST:4  F:0  NB:27  AS:0  BW:[ 50/ 34 B/s]  E:2941.57  I:40.75mBTC/hr  BS:2.09M
 4/709  50.0C | 547.3/514.4/513.5Gh/s | A:3796 R:188+0(4.7%) HW:128254/6.0%
--------------------------------------------------------------------------------
 KNC 0: 48.0C | 143.3/139.5/138.9Gh/s | A:1047 R: 39+0(3.6%) HW: 22994/4.1%
 KNC 1: 43.0C | 143.0/138.3/138.9Gh/s | A:1027 R:104+0(9.2%) HW: 76691/ 12%
 KNC 2: 42.0C | 135.0/131.7/130.8Gh/s | A: 973 R: 28+0(2.8%) HW: 16452/3.2%
 KNC 3: 50.0C | 107.9/105.0/104.9Gh/s | A: 749 R: 17+0(2.2%) HW: 12119/2.9%
--------------------------------------------------------------------------------

[Wesly]

900+ pages.

You Sir are very insightful!   

[CYPER]

http://www.youtube.com/watch?v=e4QGnppJ-ys

Do you think I will receive my miners by page 1000?

The people with the last October batch orders are screwed twice – once by having our miners delayed by a considerable amount of time and twice by shipping all November units on time, thus again significantly reducing the time we have until they start hashing. And I find it highly unprofessional that KNC discriminates customers in regards to compensation.

"All current paid orders will be shipped no later than October 15th." - I call that false advertising.

[texaslabrat]

I see, you tried 0.96 and then 0.94 gave you the .7 volt VRM output voltage?

a hard reset and power cycle brought it back to high voltage again

it is screaming now holding ~525 at BTCGuild  (just think if I had the other 59 cores)

10 min mark:

 Block: ...fac0e16a #265429  Diff:268M ( 1.92Ph/s)  Started: [01:10:24]
 ST:2  F:0  NB:3  AS:0  BW:[ 50/ 34 B/s]  E:2764.94  I:38.45mBTC/hr  BS:141k
 4/709  50.0C | 571.0/504.2/506.6Gh/s | A:167 R:10+0(5.6%) HW:6766/6.8%
--------------------------------------------------------------------------------
 KNC 0: 46.0C | 142.5/136.8/133.8Gh/s | A: 45 R: 3+0(6.2%) HW:1140/4.4%
 KNC 1: 43.0C | 142.2/135.6/133.4Gh/s | A: 41 R: 6+0( 13%) HW:3804/ 12%
 KNC 2: 42.0C | 134.8/129.1/134.5Gh/s | A: 45 R: 0+0(none) HW:1112/4.5%
 KNC 3: 50.0C | 106.2/102.7/104.3Gh/s | A: 36 R: 1+0(2.7%) HW: 712/3.7%
--------------------------------------------------------------------------------

20 min mark:

 Block: ...fac0e16a #265429  Diff:268M ( 1.92Ph/s)  Started: [01:10:24]
 ST:2  F:0  NB:3  AS:0  BW:[ 48/ 34 B/s]  E:2903.21  I:39.55mBTC/hr  BS:141k
 4/709  50.0C | 549.3/511.4/511.0Gh/s | A:272 R:15+0(5.2%) HW:10175/6.4%
--------------------------------------------------------------------------------
 KNC 0: 47.0C | 144.0/138.7/136.6Gh/s | A: 75 R: 4+0(5.1%) HW: 1762/4.2%
 KNC 1: 43.0C | 143.8/137.9/137.8Gh/s | A: 67 R: 8+0( 11%) HW: 5858/ 12%
 KNC 2: 42.0C | 135.6/131.2/131.7Gh/s | A: 73 R: 2+0(2.7%) HW: 1557/4.0%
 KNC 3: 50.0C | 107.7/104.6/105.6Gh/s | A: 58 R: 1+0(1.7%) HW: 1025/3.3%
--------------------------------------------------------------------------------



Observations:

temps are up about 7-10C each board (to be expected)
the one board (KNC 1) that was really low on HW errors when not overclocking, has the highest, while the others are all under 5%  
similar amount of cores as last test (gained that one back to 709)

we'll see how this goes after a few hours...since my temps are still lower than many people's non-overclocked jupiters it looks sustainable. (all 4 VRM boards)   Dropping the fans to the crossbars does help in these situations

I should change the PSU though, it is only an 850watter

Update:  close to an hour and running strong on BTCGuild - 533.87 GH/s 546304 (99.72%) 1536 / 23040 / 0

I've followed your example and I'm getting similar results.  Much hotter but much faster despite my gimpy board #3.

I wanted to note (in case you hadn't stumbled upon it) an easy-button way of getting all the cores activated instead of the race-condition method you seemed to be describing earlier.

Basically, the /etc/init.d/cgminer.sh script enables the cores as it prepares to launch cgminer.  However, if there is already a screen session active, the script will fail....but not before it does it's core enabling mojo.  So basically what I did was reboot the machine...screen -rd, create a new screen terminal with ctlr-a,c , download/compile/install bfgminer per Luke-Jr's script, killall cgminer, /etc/init.d/cgminer start (which subsequently fails due to existing screen session), start bfgminer.  Hope that helps someone  Also, previously my board #3 would get something on the order of 30% hardware errors on .7V, but now it's basically the same as the "good" boards 1 and 4 with .9V and kicking ass.  Might not have to RMA this sucker after all :p  And yeah...totally /agree on the PSU thing...glad I bought a 1000-watt unit as I'm pulling 920W now.

Connected to stratum-lb-usa48.btcguild.com diff 256 with stratum as user x
 Block: ...6afcad37 #265438  Diff:268M ( 1.92Ph/s)  Started: [02:59:02]
 ST:2  F:0  NB:2  AS:0  BW:[ 70/ 64 B/s]  E:1874.99  I:41.76mBTC/hr  BS:353k
4/768  54.0C | 536.5/536.4/540.2Gh/s | A:237 R:16+1(6.7%) HW:5718/7.9%
--------------------------------------------------------------------------------
 KNC 0: 46.0C | 143.6/134.2/135.6Gh/s | A: 57 R: 5+0(8.1%) HW:1904/ 10%
 KNC 1: 54.0C | 143.6/135.6/133.2Gh/s | A: 63 R: 4+0(6.0%) HW: 923/5.3%
 KNC 2: 49.0C | 143.3/134.9/141.6Gh/s | A: 65 R: 2+0(3.0%) HW:1565/8.5%
 KNC 3: 45.0C | 142.9/135.1/131.2Gh/s | A: 53 R: 5+1( 10%) HW:1339/7.4%

[DPoS]

Good work!!  

 and yes another way to keep cgminer from starting and turning off cores is to just change the first { to a } in the cgminer.conf so it runs but just sits there (screen -r and just quit it)

my one die being off is probably saving enough watts so my 850psu doesnt roast...  I'll pick up a 1000W or 1200w tomorrow


Edit:

3rd time was the charm!

[eiliant]

Hosted Jupiter here. Eligius says 320 GH/s but KNC Portal stats read 510 GH/s?

Three hosted Jupiters here.

Portal shows: 526, 416, 408
Slush shows: 438, 399, 361

So portal is using higher than actual hashing speed?

[soy]

I see, you tried 0.96 and then 0.94 gave you the .7 volt VRM output voltage?

a hard reset and power cycle brought it back to high voltage again

it is screaming now holding ~525 at BTCGuild  (just think if I had the other 59 cores)

10 min mark:

 Block: ...fac0e16a #265429  Diff:268M ( 1.92Ph/s)  Started: [01:10:24]
 ST:2  F:0  NB:3  AS:0  BW:[ 50/ 34 B/s]  E:2764.94  I:38.45mBTC/hr  BS:141k
 4/709  50.0C | 571.0/504.2/506.6Gh/s | A:167 R:10+0(5.6%) HW:6766/6.8%
--------------------------------------------------------------------------------
 KNC 0: 46.0C | 142.5/136.8/133.8Gh/s | A: 45 R: 3+0(6.2%) HW:1140/4.4%
 KNC 1: 43.0C | 142.2/135.6/133.4Gh/s | A: 41 R: 6+0( 13%) HW:3804/ 12%
 KNC 2: 42.0C | 134.8/129.1/134.5Gh/s | A: 45 R: 0+0(none) HW:1112/4.5%
 KNC 3: 50.0C | 106.2/102.7/104.3Gh/s | A: 36 R: 1+0(2.7%) HW: 712/3.7%
--------------------------------------------------------------------------------

20 min mark:

 Block: ...fac0e16a #265429  Diff:268M ( 1.92Ph/s)  Started: [01:10:24]
 ST:2  F:0  NB:3  AS:0  BW:[ 48/ 34 B/s]  E:2903.21  I:39.55mBTC/hr  BS:141k
 4/709  50.0C | 549.3/511.4/511.0Gh/s | A:272 R:15+0(5.2%) HW:10175/6.4%
--------------------------------------------------------------------------------
 KNC 0: 47.0C | 144.0/138.7/136.6Gh/s | A: 75 R: 4+0(5.1%) HW: 1762/4.2%
 KNC 1: 43.0C | 143.8/137.9/137.8Gh/s | A: 67 R: 8+0( 11%) HW: 5858/ 12%
 KNC 2: 42.0C | 135.6/131.2/131.7Gh/s | A: 73 R: 2+0(2.7%) HW: 1557/4.0%
 KNC 3: 50.0C | 107.7/104.6/105.6Gh/s | A: 58 R: 1+0(1.7%) HW: 1025/3.3%
--------------------------------------------------------------------------------



Observations:

temps are up about 7-10C each board (to be expected)
the one board (KNC 1) that was really low on HW errors when not overclocking, has the highest, while the others are all under 5%  
similar amount of cores as last test (gained that one back to 709)

we'll see how this goes after a few hours...since my temps are still lower than many people's non-overclocked jupiters it looks sustainable. (all 4 VRM boards)   Dropping the fans to the crossbars does help in these situations

I should change the PSU though, it is only an 850watter

Update:  close to an hour and running strong on BTCGuild - 533.87 GH/s 546304 (99.72%) 1536 / 23040 / 0

I'm not sure I'm running the same version of cgminer, 3.4.0 from the top line.  My cgminer doesn't note the temp.

Yes, running the earlier firmware now sure makes more sense than trying to avoid the 100 watt difference I saw on my Mercury.  It costs me $5.50/month for the extra 100 or so watts while the extra 37.8GH/s is like 3½ Blades.  So, do you measure your power at the wall?  What do you get at .7v and at .9v?

I don't understand what you mean by drop the fans to the crossbars - removing the front fans and grills completely?
 KnC 0:  | 140.4G/137.8Gh/s | A:3295472 R:133982 HW:173578 WU:2108.2/m

[texaslabrat]

Hosted Jupiter here. Eligius says 320 GH/s but KNC Portal stats read 510 GH/s?

Three hosted Jupiters here.

Portal shows: 526, 416, 408
Slush shows: 438, 399, 361

So portal is using higher than actual hashing speed?

The web interface shows the "raw" hash speed being reported by cgminer which includes HW errors.

[nightengale]

I have a single Jupiter, and am knocking on wood as I type this. For me, temperature seems like the variable that is the most critical. I'm running 0.96 with enablecores, and as long as I keep all of the chips below 45 degrees, I'm able to maintain a pool speed (BTCGuild) in the 430-440 range. This is with the lid off of the case, a stationary fan pointing at the rigs internals at a 45 degree angle, and a basement window letting cool autumn air in. At higher core temps, the rig would start faster and then slowly degrade south of 500 GH/s. At sub-45 temps, the performance seems stable. Many of you have been helpful and empathetic through all of this KnC drama, so I hope this is helpful in putting the pieces to the puzzle together for at least a few. I don't think I'll make ROI in BTC with the crazy diff jump on the horizon, but maybe with the rising price will make it in fiat. I hope everyone's KnC rigs arrive soon, and that HF, CT and all of the others experience the painful delays as we have. I also hope KnC can turn around their PR situation, it seems like they were able to pull the hard stuff off and then fumbled what would have seemed like the easier stuff. I hope they continue to earn the trust of the community. Unless they offer a crazy discount in gen 2 for gen 1 customers, I'm out of the mining business. The only ones making money in a gold rush are those selling shovels.