**US** BitFury Setup Guide

[jddebug]

Hmmm.. Only averaging ~10 gh now. I stuck a fan next to it.... I'm not sure what else to do. 

what happens if you SSH to the system and type
"nano /run/shm/.stat.log"

and report back what you see.

klondike_bar,

If you (or anyone who understands what these logs mean) have time, please take a look at these. I've found my bitfurys are not performing like others I read about here and would like to get them working better. I've performed no mods. I just plugged them in and this is what I got. These are first batch US kits btw.

Maybe I should do as you suggested to Trance but I'd like the feedback first.

Thank you.

If possible, shorten the lists to only the chips performing lower than 1.7GH, and it will be easier to spot the trend/problem. What batch is your hardware from? in the august/october stuff the hardware benefited from modding higher (not just speed but also getting low-performance chips to run correctly), but for the newer batch with higher voltage, issues will arise if you dont provide sufficient cooling (this means heatsinks AND airflow)

I would suggest: buy a $10-15 multimeter and check the voltage on each card. Take the red positive signal from the top contact on the large cube-like inductor and the ground from the pci-e or screw terminal GND. You want a voltage around 0.77-0.82 if you have 'okay' cooling and 0.82-0.88 if you have relatively large heatsinks on each backside of the PCB, and lots of cool airflow

In your case, the voltage on a lot of your cards seems low, almost like the august batch. check the voltage and if necessary, apply the pencil mod to increase it. If the voltage is high, then the issue is your cooling

I'll clean up those logs and remove everything thats over 1.7GH. Sorry about that. I didn't know what would be good information and what would be useless. Yes, these are August batch.

[jddebug]

I could use a legend telling what each column means. Is the hashrate 1.561 or 1.934? Does one of these tell what the voltage is?


2       AIfDSo  55      1.561   1.934   109     7       0       0       183     [0:1]   36      5 7 5 6 7 7 8 8 7 7 7 7 7 7 7 7         2 0 2 1 0 0 0 0 1 1 0 0 0 0 0 0

[JTrain_51]

Definitely very good advise and TLC on your miners.

Totally agree great advice!
Love your miners - hope to see more work done

[Keefe]

I could use a legend telling what each column means. Is the hashrate 1.561 or 1.934? Does one of these tell what the voltage is?


2       AIfDSo  55      1.561   1.934   109     7       0       0       183     [0:1]   36      5 7 5 6 7 7 8 8 7 7 7 7 7 7 7 7         2 0 2 1 0 0 0 0 1 1 0 0 0 0 0 0

I like to call the 1.934 number the work rate, though most call it the hashrate. It's based on how many work units were processed. It's a function of the voltage and speed setting (55 in this case), and is usually quite stable, unless the VRM is overloaded/overheating. The 1.561 number, commonly called the noncerate, is based on how many good nonces are found, and will vary randomly even under perfect conditions (i.e. no errors).

Here's a legend for your line above:
Chip#: 2
Flags: AIfDSo (A = autotune on, check the source code for the others)
Speed: 55
Noncerate: 1.561
Hashrate: 1.934
Good nonces: 109
Nonce errors: 7
SPI errors: 0
MISO errors: 0
Work units: 183
Chip position: [0:1]
Bad cores: 36 (how many of 756 have not yet found a good nonce)

I don't know what the last two sets of numbers are.

The boards don't have digital voltage or temp meters, unfortunately.

[Keefe]

2) modify the miner.h file. to do this, SSH in and type:
"cd /opt/bitfury/chainminer
sudo pico miner.h"
and then modify:

max_error : from 5 to 6 (increases tolerance to errors slightly)
min_good : from 50 to 40 (increases tolerance to low-performance slightly)
max_speed : from 57 to 55
def_speed : from 55 to 53
min_speed : 52
[these options help prevent the system from switching chips off if they are borderline working]

Don't forget to recompile chainminer after editing miner.h or nothing will change. Just running 'make' should do that.

[Keefe]

I could use a legend telling what each column means. Is the hashrate 1.561 or 1.934? Does one of these tell what the voltage is?


2       AIfDSo  55      1.561   1.934   109     7       0       0       183     [0:1]   36      5 7 5 6 7 7 8 8 7 7 7 7 7 7 7 7         2 0 2 1 0 0 0 0 1 1 0 0 0 0 0 0

I like to call the 1.934 number the work rate, though most call it the hashrate. The work rate is based on how many work units were processed. It's a function of the voltage and speed setting (55 in this case), and is usually quite stable. The 1.561 number, commonly called the noncerate, is based on how many good nonces are found, and will vary randomly even under perfect conditions (i.e. no errors).

Here's a legend for your line above:
Chip#: 2
Flags: AIfDSo (A = autotune on, check the source code for the others)
Speed: 55
Noncerate: 1.561
Hashrate: 1.934
Good nonces: 109
Nonce errors: 7
SPI errors: 0
MISO errors: 0
Work units: 183
Chip position: [0:1]
Bad cores: 36 (how many of 756 have not yet found a good nonce)

I don't know what the last two sets of numbers are.

The boards don't have digital voltage or temp meters, unfortunately.

In case you're curious about the math...

After the first 5 minutes of chainminer running, the stats are updated every 5 minutes, so the numbers are based on the previous 5 minutes of work. Each core does 4194304 (2²²) hashes per work unit. 183 work units * 756 cores * 4194304 hashes / 300 seconds = 1.934 billion hashes per second.

On average, 1 good nonce (diff=1) should be found per 4294967296 (2³²) hashes. Since 109 good nonces were found, it calcs the noncerate like this: 109 good nonces * 4294967296 average hashes per nonce / 300 seconds = 1.561 billion hashes per second. This was probably just an unlucky 5 minute interval and you'll see the noncerate higher than the hashrate at other times.

The 7 nonce errors are nonces the chip reported as good but chainminer found to be actually bad. This happens because of bad bit flips during the hashing process in the chip and occurs much more often when overclocked too much. Less than 5% average nonce errors is just fine. In this case, we can expect at least 4.8% nonce errors anyway because apparently 36 of the 756 cores are malfunctioning, at least at this clock speed and voltage. The chip's hashing cores are arranged in a 21x36 grid, at least logically, so it is common to find a whole row or column bad. You can see that visually in /tmp/.core.log

[Keefe]

3) modify the optimal settings to start the miner at a more managable speed. SSH and type:
"nano /run/shm/.stat.log"
change everything to AIfDSo 53
exit, and tell it to save as "opt/bitfury/best.cnf"

Don't forget the slash: /opt/bitfury/best.cnf

[jddebug]

2) modify the miner.h file. to do this, SSH in and type:
"cd /opt/bitfury/chainminer
sudo pico miner.h"
and then modify:

max_error : from 5 to 6 (increases tolerance to errors slightly)
min_good : from 50 to 40 (increases tolerance to low-performance slightly)
max_speed : from 57 to 55
def_speed : from 55 to 53
min_speed : 52
[these options help prevent the system from switching chips off if they are borderline working]

Don't forget to recompile chainminer after editing miner.h or nothing will change. Just running 'make' should do that.

Do I need to be in a particular directory when I run "make"?

[Keefe]

2) modify the miner.h file. to do this, SSH in and type:
"cd /opt/bitfury/chainminer
sudo pico miner.h"
and then modify:

max_error : from 5 to 6 (increases tolerance to errors slightly)
min_good : from 50 to 40 (increases tolerance to low-performance slightly)
max_speed : from 57 to 55
def_speed : from 55 to 53
min_speed : 52
[these options help prevent the system from switching chips off if they are borderline working]

Don't forget to recompile chainminer after editing miner.h or nothing will change. Just running 'make' should do that.

Do I need to be in a particular directory when I run "make"?

Yes: /opt/bitfury/chainminer

And you don't need to use sudo when working in that directory, as those files (miner.h, etc) are owned by user pi, not root.

[john_es]

OK, so I have this... which is great...

1.) Although the nrate was 60, btcguild shows only 40.  Any idea for that?

Code:

18      AIfDSo  49      2.176   1.913   152     0       0       0       0       181     [1:1]   618     9 9 9 9 10 10 10 10 10 10 10 10 9 9 9 9         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
19      AIfDSo  49      1.761   1.871   123     0       0       0       0       177     [1:2]   639     7 8 8 8 8 8 8 8 8 8 8 8 7 7 7 7         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
20      AIfDSo  49      1.618   1.860   113     0       0       0       0       176     [1:3]   651     8 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
21      AIfDSo  49      1.904   1.860   133     0       0       0       0       176     [1:4]   632     9 9 9 9 8 8 8 8 8 8 8 8 8 8 8 9         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
22      AIfDSo  49      2.004   1.871   140     0       0       0       0       177     [1:5]   622     8 9 9 9 9 9 9 9 9 9 9 9 9 8 8 8         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
23      AIfDSo  49      1.861   1.829   130     0       0       0       0       173     [1:6]   631     8 8 8 8 8 8 8 8 8 8 9 9 8 8 8 8         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
24      AIfDSo  49      2.090   1.903   146     1       0       0       0       180     [1:7]   621     9 9 9 9 9 9 9 9 9 9 9 10 10 9 9 9       0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0
25      AIfDSo  49      1.761   1.945   123     0       0       0       0       184     [1:8]   640     7 7 8 8 8 8 8 8 8 8 8 8 8 7 7 7         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
26      AIfDSo  49      1.875   1.850   131     0       0       0       0       175     [1:9]   641     8 8 8 8 8 8 8 8 8 8 8 8 8 9 9 9         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
27      AIfDSo  49      1.833   1.892   128     0       0       0       0       179     [1:A]   636     8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
28      AIfDSo  49      1.890   1.998   132     1       1       0       0       189     [1:B]   631     8 9 9 9 9 9 7 8 8 8 8 8 8 8 8 8         0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0
29      AIfDSo  49      1.833   1.955   128     0       0       0       0       185     [1:C]   639     8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
30      AIfDSo  49      1.947   1.913   136     4       0       0       0       181     [1:D]   628     8 8 9 9 9 9 9 9 9 9 7 8 9 8 8 8         0 0 0 0 0 0 0 0 0 0 2 2 0 0 0 0
31      AIfDSo  49      1.689   1.776   118     1       0       0       0       168     [1:E]   646     8 8 8 8 8 7 7 7 7 7 7 7 7 6 8 8         0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0
32      AIfDSo  49      1.589   1.913   111     0       0       0       0       181     [1:F]   648     7 7 7 7 7 7 6 7 7 7 7 7 7 7 7 7         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
speed:1568 noncerate[GH/s]:59.485 (1.859/chip) hashrate[GH/s]:60.543 good:4155 errors:16 spi-err:3 miso-err:1 duplicates:0 jobs:314 cores:16% good:32 bad:0 off:0 (best[GH/s]:0.000) Sun Dec  1 17:19:50 2013
board-2 speed   nrate   hrate   good    errors  spi-err miso-er duplic  good    bad     off     per chip        good cores
0:      784     29.965  30.282  2093    9       1       1       0       16      0       0       (1.873/chip)    16%
1:      784     29.521  30.261  2062    7       2       0       0       16      0       0       (1.845/chip)    16%

Then it goes to this:

Code:

1       AIfDSo  49      0.888   1.025   62      1       0       1       0       97      [0:0]   583     3 4 4 4 4 4 4 4 4 4 4 4 4 4 4 3         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
2       AIfDSo  49      1.203   1.068   84      0       0       0       0       101     [0:1]   571     5 5 5 5 6 6 6 6 5 5 5 5 5 5 5 5         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
3       AIfDSo  49      1.160   1.057   81      0       0       0       0       100     [0:2]   574     5 5 5 5 6 5 5 5 5 5 5 5 5 5 5 5         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
4       AIfDSo  49      1.145   1.046   80      0       0       0       0       99      [0:3]   575     5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
5       AIfDSo  49      0.959   1.078   67      0       0       0       0       102     [0:4]   585     5 5 4 4 4 4 4 4 4 4 4 4 4 4 4 5         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
6       AIfDSo  49      1.016   1.068   71      0       0       0       0       101     [0:5]   585     4 4 4 4 5 5 5 5 5 5 5 4 4 4 4 4         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
7       AIfDSo  49      0.787   1.036   55      0       0       0       0       98      [0:6]   600     3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 3         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
8       AIfDSo  49      1.031   1.004   72      1       0       0       0       95      [0:7]   584     5 5 5 5 5 5 5 4 4 4 4 3 4 4 5 5         0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0
9       AIfDSo  49      0.916   1.110   64      0       0       0       0       105     [0:8]   576     4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
10      AIfDSo  49      0.959   1.036   67      0       0       0       0       98      [0:9]   580     5 5 5 4 4 4 4 4 4 4 4 4 4 4 4 4         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
11      AIfDSo  49      1.160   1.046   81      1       0       0       0       99      [0:A]   572     5 5 6 6 5 5 5 5 5 5 5 5 5 5 4 5         0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0
12      AIfDSo  49      1.074   1.068   75      2       0       0       0       101     [0:B]   580     5 5 5 3 3 4 5 5 5 5 5 5 5 5 5 5         0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0
13      AIfDSo  49      1.045   1.068   73      0       0       0       0       101     [0:C]   575     4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 4         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
14      AIfDSo  49      1.059   1.025   74      0       0       0       0       97      [0:D]   591     4 4 4 4 5 5 5 5 5 5 5 5 5 5 4 4         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
15      AIfDSo  49      1.217   1.046   85      0       1       0       0       99      [0:E]   561     6 6 6 6 5 5 5 5 5 5 5 5 5 5 5 6         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
16      AIfDSo  49      1.016   1.110   71      0       0       0       0       105     [0:F]   563     5 5 5 5 5 5 5 4 4 4 4 4 4 4 4 4         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
17      AIfDSo  49      1.918   1.903   134     0       0       0       0       180     [1:0]   539     9 9 9 8 8 8 8 8 8 8 8 8 8 9 9 9         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
18      AIfDSo  49      1.904   1.924   133     0       0       0       0       182     [1:1]   521     9 8 8 8 8 8 8 8 8 8 8 8 9 9 9 9         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
19      AIfDSo  49      1.833   1.881   128     0       0       0       0       178     [1:2]   544     8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
20      AIfDSo  49      1.747   1.871   122     2       0       0       0       177     [1:3]   552     7 8 8 8 8 8 8 7 8 8 8 8 7 7 7 7         0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0
21      AIfDSo  49      1.704   1.871   119     2       0       0       0       177     [1:4]   544     7 7 7 7 7 7 8 8 8 8 8 8 8 7 7 7         0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0
22      AIfDSo  49      1.990   1.881   139     1       0       0       0       178     [1:5]   525     9 9 9 9 9 9 8 9 9 8 8 8 8 9 9 9         0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0
23      AIfDSo  49      1.618   1.839   113     0       0       0       0       174     [1:6]   541     7 7 7 7 7 7 7 7 7 7 7 7 8 7 7 7         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
24      AIfDSo  49      2.362   1.903   165     1       0       0       0       180     [1:7]   502     11 11 10 11 10 10 10 10 10 10 10 10 10 10 11 11         0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0
25      AIfDSo  49      1.918   1.945   134     2       0       0       0       184     [1:8]   534     9 9 9 8 8 8 8 8 8 8 8 8 8 9 9 9         0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0
26      AIfDSo  49      1.532   1.860   107     1       0       0       0       176     [1:9]   555     7 7 7 7 7 6 7 7 7 7 7 7 7 6 6 5         0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0
27      AIfDSo  49      1.833   1.903   128     1       0       0       0       180     [1:A]   531     8 9 8 8 8 8 8 8 8 8 8 8 8 7 8 8         0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0
28      AIfDSo  49      1.904   2.008   133     4       0       0       0       190     [1:B]   531     8 8 8 8 8 8 9 9 9 9 9 9 8 8 7 8         0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1
29      AIfDSo  49      2.004   1.945   140     1       0       2       1       184     [1:C]   526     9 9 9 8 8 8 8 9 9 9 9 9 9 9 9 9         0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0
30      AIfDSo  49      2.033   1.903   142     0       0       0       0       180     [1:D]   520     9 9 9 9 9 9 8 9 9 9 9 9 8 9 9 9         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
31      AIfDSo  49      1.947   1.776   136     2       0       0       0       168     [1:E]   544     8 8 8 8 8 9 9 9 9 8 8 8 9 9 9 9         0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0
32      AIfDSo  49      1.833   1.913   128     0       0       0       0       181     [1:F]   551     7 7 8 8 8 8 9 9 9 8 8 8 8 8 8 7         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
speed:1568 noncerate[GH/s]:46.715 (1.460/chip) hashrate[GH/s]:47.215 good:3263 errors:22 spi-err:1 miso-err:3 duplicates:1 jobs:300 cores:26% good:32 bad:0 off:0 (best[GH/s]:0.000) Sun Dec  1 17:24:50 2013
board-2 speed   nrate   hrate   good    errors  spi-err miso-er duplic  good    bad     off     per chip        good cores
0:      784     16.636  16.890  1162    5       1       1       0       16      0       0       (1.040/chip)    23%
1:      784     30.079  30.324  2101    17      0       2       1       16      0       0       (1.880/chip)    29%

Any idea how to toubleshoot this?  I have fans pointed at the boards, they are cool.
I also set the 49s to 53 in the best.cnf file, but it seems to keep putting them down to 49.



then it goes down to this:

Code:

board-2 speed   nrate   hrate   good    errors  spi-err miso-er duplic  good    bad     off     per chip        good cores
0:      848     6.483   7.065   397     492     0       3       57      16      0       0       (0.405/chip)    3%
1:      848     6.794   7.825   416     488     0       1       57      16      0       0       (0.425/chip)    3%

[Doff]

Did you adjust your Pool difficulty to match the hashrate? If your are mining diff 1 shares it will slow down the miners like that.

[zurg]

Is anyone mining Zetacoin?
I need some help with pool (cant get CoinEx running) or heck even solo mining.

Thanks

[tom99]

Is anyone mining Zetacoin?
I need some help with pool (cant get CoinEx running) or heck even solo mining.

Thanks

  you can use bfgminer for it but I did not test yet.


edit: solo ok with bfgminer.

[zurg]

Is anyone mining Zetacoin?
I need some help with pool (cant get CoinEx running) or heck even solo mining.

Thanks

  you can use bfgminer for it but I did not test yet.


edit: solo ok with bfgminer.

How do you get bfgminer on it?
Any guides?

Thanks!

[tom99]

Is anyone mining Zetacoin?
I need some help with pool (cant get CoinEx running) or heck even solo mining.

Thanks

  you can use bfgminer for it but I did not test yet.


edit: solo ok with bfgminer.

How do you get bfgminer on it?
Any guides?

Thanks!

   read here https://bitcointalk.org/index.php?topic=251966.3720


I changed 4 to 1 for it to work old v1 mboard
clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &t1);
   for (i = 0; i < 1; i++) {
      slot_on = 1;

[klondike_bar]

OK, so I have this... which is great...

1.) Although the nrate was 60, btcguild shows only 40.  Any idea for that?

Code:

18      AIfDSo  49      2.176   1.913   152     0       0       0       0       181     [1:1]   618     9 9 9 9 10 10 10 10 10 10 10 10 9 9 9 9         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
19      AIfDSo  49      1.761   1.871   123     0       0       0       0       177     [1:2]   639     7 8 8 8 8 8 8 8 8 8 8 8 7 7 7 7         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
20      AIfDSo  49      1.618   1.860   113     0       0       0       0       176     [1:3]   651     8 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
21      AIfDSo  49      1.904   1.860   133     0       0       0       0       176     [1:4]   632     9 9 9 9 8 8 8 8 8 8 8 8 8 8 8 9         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
22      AIfDSo  49      2.004   1.871   140     0       0       0       0       177     [1:5]   622     8 9 9 9 9 9 9 9 9 9 9 9 9 8 8 8         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
23      AIfDSo  49      1.861   1.829   130     0       0       0       0       173     [1:6]   631     8 8 8 8 8 8 8 8 8 8 9 9 8 8 8 8         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
24      AIfDSo  49      2.090   1.903   146     1       0       0       0       180     [1:7]   621     9 9 9 9 9 9 9 9 9 9 9 10 10 9 9 9       0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0
25      AIfDSo  49      1.761   1.945   123     0       0       0       0       184     [1:8]   640     7 7 8 8 8 8 8 8 8 8 8 8 8 7 7 7         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
26      AIfDSo  49      1.875   1.850   131     0       0       0       0       175     [1:9]   641     8 8 8 8 8 8 8 8 8 8 8 8 8 9 9 9         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
27      AIfDSo  49      1.833   1.892   128     0       0       0       0       179     [1:A]   636     8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
28      AIfDSo  49      1.890   1.998   132     1       1       0       0       189     [1:B]   631     8 9 9 9 9 9 7 8 8 8 8 8 8 8 8 8         0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0
29      AIfDSo  49      1.833   1.955   128     0       0       0       0       185     [1:C]   639     8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
30      AIfDSo  49      1.947   1.913   136     4       0       0       0       181     [1:D]   628     8 8 9 9 9 9 9 9 9 9 7 8 9 8 8 8         0 0 0 0 0 0 0 0 0 0 2 2 0 0 0 0
31      AIfDSo  49      1.689   1.776   118     1       0       0       0       168     [1:E]   646     8 8 8 8 8 7 7 7 7 7 7 7 7 6 8 8         0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0
32      AIfDSo  49      1.589   1.913   111     0       0       0       0       181     [1:F]   648     7 7 7 7 7 7 6 7 7 7 7 7 7 7 7 7         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
speed:1568 noncerate[GH/s]:59.485 (1.859/chip) hashrate[GH/s]:60.543 good:4155 errors:16 spi-err:3 miso-err:1 duplicates:0 jobs:314 cores:16% good:32 bad:0 off:0 (best[GH/s]:0.000) Sun Dec  1 17:19:50 2013
board-2 speed   nrate   hrate   good    errors  spi-err miso-er duplic  good    bad     off     per chip        good cores
0:      784     29.965  30.282  2093    9       1       1       0       16      0       0       (1.873/chip)    16%
1:      784     29.521  30.261  2062    7       2       0       0       16      0       0       (1.845/chip)    16%

Then it goes to this:

Code:

1       AIfDSo  49      0.888   1.025   62      1       0       1       0       97      [0:0]   583     3 4 4 4 4 4 4 4 4 4 4 4 4 4 4 3         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
2       AIfDSo  49      1.203   1.068   84      0       0       0       0       101     [0:1]   571     5 5 5 5 6 6 6 6 5 5 5 5 5 5 5 5         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
3       AIfDSo  49      1.160   1.057   81      0       0       0       0       100     [0:2]   574     5 5 5 5 6 5 5 5 5 5 5 5 5 5 5 5         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
4       AIfDSo  49      1.145   1.046   80      0       0       0       0       99      [0:3]   575     5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
5       AIfDSo  49      0.959   1.078   67      0       0       0       0       102     [0:4]   585     5 5 4 4 4 4 4 4 4 4 4 4 4 4 4 5         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
6       AIfDSo  49      1.016   1.068   71      0       0       0       0       101     [0:5]   585     4 4 4 4 5 5 5 5 5 5 5 4 4 4 4 4         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
7       AIfDSo  49      0.787   1.036   55      0       0       0       0       98      [0:6]   600     3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 3         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
8       AIfDSo  49      1.031   1.004   72      1       0       0       0       95      [0:7]   584     5 5 5 5 5 5 5 4 4 4 4 3 4 4 5 5         0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0
9       AIfDSo  49      0.916   1.110   64      0       0       0       0       105     [0:8]   576     4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
10      AIfDSo  49      0.959   1.036   67      0       0       0       0       98      [0:9]   580     5 5 5 4 4 4 4 4 4 4 4 4 4 4 4 4         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
11      AIfDSo  49      1.160   1.046   81      1       0       0       0       99      [0:A]   572     5 5 6 6 5 5 5 5 5 5 5 5 5 5 4 5         0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0
12      AIfDSo  49      1.074   1.068   75      2       0       0       0       101     [0:B]   580     5 5 5 3 3 4 5 5 5 5 5 5 5 5 5 5         0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0
13      AIfDSo  49      1.045   1.068   73      0       0       0       0       101     [0:C]   575     4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 4         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
14      AIfDSo  49      1.059   1.025   74      0       0       0       0       97      [0:D]   591     4 4 4 4 5 5 5 5 5 5 5 5 5 5 4 4         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
15      AIfDSo  49      1.217   1.046   85      0       1       0       0       99      [0:E]   561     6 6 6 6 5 5 5 5 5 5 5 5 5 5 5 6         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
16      AIfDSo  49      1.016   1.110   71      0       0       0       0       105     [0:F]   563     5 5 5 5 5 5 5 4 4 4 4 4 4 4 4 4         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
17      AIfDSo  49      1.918   1.903   134     0       0       0       0       180     [1:0]   539     9 9 9 8 8 8 8 8 8 8 8 8 8 9 9 9         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
18      AIfDSo  49      1.904   1.924   133     0       0       0       0       182     [1:1]   521     9 8 8 8 8 8 8 8 8 8 8 8 9 9 9 9         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
19      AIfDSo  49      1.833   1.881   128     0       0       0       0       178     [1:2]   544     8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
20      AIfDSo  49      1.747   1.871   122     2       0       0       0       177     [1:3]   552     7 8 8 8 8 8 8 7 8 8 8 8 7 7 7 7         0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0
21      AIfDSo  49      1.704   1.871   119     2       0       0       0       177     [1:4]   544     7 7 7 7 7 7 8 8 8 8 8 8 8 7 7 7         0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0
22      AIfDSo  49      1.990   1.881   139     1       0       0       0       178     [1:5]   525     9 9 9 9 9 9 8 9 9 8 8 8 8 9 9 9         0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0
23      AIfDSo  49      1.618   1.839   113     0       0       0       0       174     [1:6]   541     7 7 7 7 7 7 7 7 7 7 7 7 8 7 7 7         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
24      AIfDSo  49      2.362   1.903   165     1       0       0       0       180     [1:7]   502     11 11 10 11 10 10 10 10 10 10 10 10 10 10 11 11         0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0
25      AIfDSo  49      1.918   1.945   134     2       0       0       0       184     [1:8]   534     9 9 9 8 8 8 8 8 8 8 8 8 8 9 9 9         0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0
26      AIfDSo  49      1.532   1.860   107     1       0       0       0       176     [1:9]   555     7 7 7 7 7 6 7 7 7 7 7 7 7 6 6 5         0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0
27      AIfDSo  49      1.833   1.903   128     1       0       0       0       180     [1:A]   531     8 9 8 8 8 8 8 8 8 8 8 8 8 7 8 8         0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0
28      AIfDSo  49      1.904   2.008   133     4       0       0       0       190     [1:B]   531     8 8 8 8 8 8 9 9 9 9 9 9 8 8 7 8         0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1
29      AIfDSo  49      2.004   1.945   140     1       0       2       1       184     [1:C]   526     9 9 9 8 8 8 8 9 9 9 9 9 9 9 9 9         0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0
30      AIfDSo  49      2.033   1.903   142     0       0       0       0       180     [1:D]   520     9 9 9 9 9 9 8 9 9 9 9 9 8 9 9 9         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
31      AIfDSo  49      1.947   1.776   136     2       0       0       0       168     [1:E]   544     8 8 8 8 8 9 9 9 9 8 8 8 9 9 9 9         0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0
32      AIfDSo  49      1.833   1.913   128     0       0       0       0       181     [1:F]   551     7 7 8 8 8 8 9 9 9 8 8 8 8 8 8 7         0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
speed:1568 noncerate[GH/s]:46.715 (1.460/chip) hashrate[GH/s]:47.215 good:3263 errors:22 spi-err:1 miso-err:3 duplicates:1 jobs:300 cores:26% good:32 bad:0 off:0 (best[GH/s]:0.000) Sun Dec  1 17:24:50 2013
board-2 speed   nrate   hrate   good    errors  spi-err miso-er duplic  good    bad     off     per chip        good cores
0:      784     16.636  16.890  1162    5       1       1       0       16      0       0       (1.040/chip)    23%
1:      784     30.079  30.324  2101    17      0       2       1       16      0       0       (1.880/chip)    29%

Any idea how to toubleshoot this?  I have fans pointed at the boards, they are cool.
I also set the 49s to 53 in the best.cnf file, but it seems to keep putting them down to 49.



then it goes down to this:

Code:

board-2 speed   nrate   hrate   good    errors  spi-err miso-er duplic  good    bad     off     per chip        good cores
0:      848     6.483   7.065   397     492     0       3       57      16      0       0       (0.405/chip)    3%
1:      848     6.794   7.825   416     488     0       1       57      16      0       0       (0.425/chip)    3%

make sure you use the start-miner command or reboot after making changes to the best.cnf file.
check your pool difficulty. if you are running 2 cards, your difficulty should be at least 64, but in some pools 128 will work a lot better.

[Beans]

On my unit one of the last cards in a bank always seems to shut off after hour or so. Sometimes it comes back on for a while and sometimes the issue spreads to the 3rd card in the bank. I've rotated card positions and it doesn't seem to solve the problem. Anyone know what's causing this?

[Keefe]

On my unit one of the last cards in a bank always seems to shut off after hour or so. Sometimes it comes back on for a while and sometimes the issue spreads to the 3rd card in the bank. I've rotated card positions and it doesn't seem to solve the problem. Anyone know what's causing this?

Have you secured your cards so they don't flutter in the airflow?

[Cablez]

Regulator temp. not too high?  That will cause hash cycling as well as it heats and cools off.

[mwk13]

I've applied copper heatsinks to the back of the new unmodded h-cards i have, directed fans (3x 120 mm) at them but the cards still get so hot they seem on the verge of burning up.
What else can i try?
Does anyone have instructions that show how to adjust the voltage using the trimpots?
For now, I'd like to turn down the voltage to get ~25gh/s (currently at 33+ gh/s).

Thank you.