Not really, because I do not like quick'n'dirty stuff like the pencil mod. I have a real resistance of 4.07k with 1% metal film (not measured mounted inside the circuit), so you can't compare easily. I suppose this is one reason why it is so stable, regardless of temperature. (Carbon an graphite have a negative temperature coefficient, which causes the resistance to drop with rising temperatures, which leads to even more heat and so on...)
I'm runnning 5 "server grade" fans on the 2 boards, which make a hell of a noise, but keep the boards and surfaces of the components pretty cool.
Edit: Added NTC explaination, typos, wrong value
Topic: [GUIDE] BitFury Miner Support/Tuning - page 37. (Read 148083 times)
Two quick questions on the goxxed info. 1) What points are you using exactly to measure the altered voltage? I am leery to probe around the board while powered up for fear of shorting something.
2) What exactly is reniceing and why is it important to reduce? This is the first time I have seen this term used in the bitfury threads.
Thanks very much and awesome work!
2) What exactly is reniceing and why is it important to reduce? This is the first time I have seen this term used in the bitfury threads.
Thanks very much and awesome work!
Meanwhile I have a stable nonce rate of average >35 Gh/s on both boards - so time to give something back:
You can measure the voltage on nearly every capacitor on the board, I usually use the bigger ones directly beside the DC/DC converter, left to the coil (the bigest part on the board). There are not many ways to do something wrong, just make sure to not shorten your probes, as there are 30+ Amps available. (I have exactly 0.840 Volts there with 55er clocks and it looks very stable, although there is no easy way to measure the real current draw on the core voltage and confirm that everything is inside bounds.)
BTW: I also reported about a mysterious chip, which usually throws lots of errors, but sometimes recovers completely after a longer uptime. When running this board alone or in switched order with the other one, the errors of this single chip also disappear.
Hi, thanks for sharing.
Can you also confirm the Ohm values given above?
Two quick questions on the goxxed info. 1) What points are you using exactly to measure the altered voltage? I am leery to probe around the board while powered up for fear of shorting something.
2) What exactly is reniceing and why is it important to reduce? This is the first time I have seen this term used in the bitfury threads.
Thanks very much and awesome work!
2) What exactly is reniceing and why is it important to reduce? This is the first time I have seen this term used in the bitfury threads.
Thanks very much and awesome work!
Meanwhile I have a stable nonce rate of average >35 Gh/s on both boards - so time to give something back:
You can measure the voltage on nearly every capacitor on the board, I usually use the bigger ones directly beside the DC/DC converter, left to the coil (the bigest part on the board). There are not many ways to do something wrong, just make sure to not shorten your probes, as there are 30+ Amps available. (I have exactly 0.840 Volts there with 55er clocks and it looks very stable, although there is no easy way to measure the real current draw on the core voltage and confirm that everything is inside bounds.)
BTW: I also reported about a mysterious chip, which usually throws lots of errors, but sometimes recovers completely after a longer uptime. When running this board alone or in switched order with the other one, the errors of this single chip also disappear.
I'm running this command as suggested by -Redacted-:
Latest reading:
Code:
while (true) do tail -3 /run/shm/.stat.log; sleep 305; done
Latest reading:
Code:
16 AIfDSo 55 1.933 2.325 135 19 0 0 220 [0:F] 197 8 9 10 8 9 9 9 8 9 8 8 8 7 8 8 9 2 1 0 2 1 1 1 2 0 1 1 1 2 1 2 1
speed:880 noncerate[GH/s]:32.270 (2.017/chip) hashrate[GH/s]:34.753 good:2254 errors:165 spi-err:0 miso-err:0 jobs:295 cores:71% good:16 bad:0 off:0 (best[GH/s]:32.255) Sun Sep 15 13:58:13 2013
0: 880 32.270 34.753 2254 165 0 0 16 0 0 (2.017/chip) 71%
This pencil mod trick has been working great! At first I used too much pencil and had a resistance of 1.08k and the noncerate shot up to 35Gh/s then dropped down quickly... Soon after I wiped away some of the pencil marking, I finally read a resistance of 1.18k, and this turned out to be the sweet spot for me... I've been steady at 30.5-32Gh/s noncerate now. I also put a small turbo desk fan blowing on it at low speed.
I've been running now for the past 30 minutes at the time of me gathering this info.
How does this look to you?
Code:
16 AIfDSo 55 1.904 2.315 133 7 0 0 219 [0:F] 436 9 9 8 9 9 7 8 8 8 8 8 8 9 9 9 7 0 0 1 0 0 2 1 1 0 0 0 0 0 0 0 2
speed:880 noncerate[GH/s]:32.098 (2.006/chip) hashrate[GH/s]:34.542 good:2242 errors:190 spi-err:0 miso-err:0 jobs:375 cores:42% good:16 bad:0 off:0 (best[GH/s]:31.525) Sun Sep 15 13:38:13 2013
0: 880 32.098 34.542 2242 190 0 0 16 0 0 (2.006/chip) 42%
Code:
16 AIfDSo 55 1.847 2.304 129 14 0 0 218 [0:F] 363 9 8 7 8 7 8 8 8 8 9 8 8 9 7 9 8 0 1 2 1 2 1 1 0 1 0 1 1 0 2 0 1
speed:880 noncerate[GH/s]:30.594 (1.912/chip) hashrate[GH/s]:34.584 good:2137 errors:176 spi-err:0 miso-err:0 jobs:375 cores:51% good:16 bad:0 off:0 (best[GH/s]:32.098) Sun Sep 15 13:43:13 2013
0: 880 30.594 34.584 2137 176 0 0 16 0 0 (1.912/chip) 51%
I've been running now for the past 30 minutes at the time of me gathering this info.
How does this look to you?
Great result, though it sounds weird that the hashrate wasn't stable at first with 1.08k. BTW, how do you get these stats: "cores:51% good:16 bad:0 off:0"? I just have the record (it's called 'record' on my stats, not 'best') right after jobs. Are those some extra stats that are shown when autotune is enabled?
This pencil mod trick has been working great! At first I used too much pencil and had a resistance of 1.08k and the noncerate shot up to 35Gh/s then dropped down quickly... Soon after I wiped away some of the pencil marking, I finally read a resistance of 1.18k, and this turned out to be the sweet spot for me... I've been steady at 30.5-32Gh/s noncerate now. I also put a small turbo desk fan blowing on it at low speed.
I've been running now for the past 30 minutes at the time of me gathering this info.
How does this look to you?
Code:
16 AIfDSo 55 1.904 2.315 133 7 0 0 219 [0:F] 436 9 9 8 9 9 7 8 8 8 8 8 8 9 9 9 7 0 0 1 0 0 2 1 1 0 0 0 0 0 0 0 2
speed:880 noncerate[GH/s]:32.098 (2.006/chip) hashrate[GH/s]:34.542 good:2242 errors:190 spi-err:0 miso-err:0 jobs:375 cores:42% good:16 bad:0 off:0 (best[GH/s]:31.525) Sun Sep 15 13:38:13 2013
0: 880 32.098 34.542 2242 190 0 0 16 0 0 (2.006/chip) 42%
Code:
16 AIfDSo 55 1.847 2.304 129 14 0 0 218 [0:F] 363 9 8 7 8 7 8 8 8 8 9 8 8 9 7 9 8 0 1 2 1 2 1 1 0 1 0 1 1 0 2 0 1
speed:880 noncerate[GH/s]:30.594 (1.912/chip) hashrate[GH/s]:34.584 good:2137 errors:176 spi-err:0 miso-err:0 jobs:375 cores:51% good:16 bad:0 off:0 (best[GH/s]:32.098) Sun Sep 15 13:43:13 2013
0: 880 30.594 34.584 2137 176 0 0 16 0 0 (1.912/chip) 51%
I've been running now for the past 30 minutes at the time of me gathering this info.
How does this look to you?
Thanks for the info on niceing guys. As you may have guessed I am not a big 'nix guy....learning. Looks like I do this on windows a lot for demanding processes so its just a matter of vocabulary. 
Has there been info given yet about increasing the priority of the mining process yielding better hash results?
Has there been info given yet about increasing the priority of the mining process yielding better hash results?
"Nice" is a term used to describe the priority of a process running under UNIX. The nicer a task is, the more it "yields" to others and the lower the priority that it runs at. "Renice" - means changing the nice value, typically increasing the nice value and lowering the priority of a task. Since interrupts are pre-emptive, tasks don't really "yield" - something with a higher nice value gets preempted (interrupted) more often.
The root user can lower the nice value of a process, increasing its priority and lengthing the interval between preempts - making it "less nice". It is possible to lower a task's nice value to the point where it has more priority than the kernel, thereby guaranteeing that your Unix system will crash if your code makes a system call of any kind. On a system that is not very busy, raising or lowering the nice value doesn't have much of an effect.
The root user can lower the nice value of a process, increasing its priority and lengthing the interval between preempts - making it "less nice". It is possible to lower a task's nice value to the point where it has more priority than the kernel, thereby guaranteeing that your Unix system will crash if your code makes a system call of any kind. On a system that is not very busy, raising or lowering the nice value doesn't have much of an effect.
Two quick questions on the goxxed info. 1) What points are you using exactly to measure the altered voltage? I am leery to probe around the board while powered up for fear of shorting something.
2) What exactly is reniceing and why is it important to reduce? This is the first time I have seen this term used in the bitfury threads.
Thanks very much and awesome work!
2) What exactly is reniceing and why is it important to reduce? This is the first time I have seen this term used in the bitfury threads.
Thanks very much and awesome work!
I'm really curious about 1) too.
Reniceing is just the linux way to set processing priority for a task. You might want the miner process to have a high priority. I'd expect this to not matter much, or be set by default. Maybe it really helps, I'm trying on mine now.
:-) jep, maybee a small picture ... where and how to ... measure the altered voltage would help ... us ... .-)
Two quick questions on the goxxed info. 1) What points are you using exactly to measure the altered voltage? I am leery to probe around the board while powered up for fear of shorting something.
2) What exactly is reniceing and why is it important to reduce? This is the first time I have seen this term used in the bitfury threads.
Thanks very much and awesome work!
2) What exactly is reniceing and why is it important to reduce? This is the first time I have seen this term used in the bitfury threads.
Thanks very much and awesome work!
I'm really curious about 1) too.
Reniceing is just the linux way to set processing priority for a task. You might want the miner process to have a high priority. I'd expect this to not matter much, or be set by default. Maybe it really helps, I'm trying on mine now.
Two quick questions on the goxxed info. 1) What points are you using exactly to measure the altered voltage? I am leery to probe around the board while powered up for fear of shorting something.
2) What exactly is reniceing and why is it important to reduce? This is the first time I have seen this term used in the bitfury threads.
Thanks very much and awesome work!
2) What exactly is reniceing and why is it important to reduce? This is the first time I have seen this term used in the bitfury threads.
Thanks very much and awesome work!
Added:
HC Hardware Tuning:
Here's How I did it:
a) Buy Copper VGA RAM Heatsinks. Usually ships in sets of 8, so 2 packs per h-board.
a.1) I bought these: http://www.ebay.com/itm/161102078777?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
b) Affix each piece of VGA RAM Heatsink to the back of each BitFury chip on the H-Board. The RAM heatsinks come with thermal adhesives affixed.
c) Cut a 2 inch strip of DDR3 / DDR2 RAM heatskink for cooling the regulator area. Affix the heatsink to the back of board near the regulator with either thermally conductive glue or use some kind of thermal paste and small dabs of superglue / epoxy at the edges
d) Pencil mod the board until voltage reaches 0.8V. One of my boards is at 0.8V another at 0.84V. I would say 0.85V is the max after which either the regulator will shut down or the hash rate will drop dramatically.
e) Cool the boards with 120mm or bigger cooling fans.
f) Play around with best.cnf (I first changed of all the chip speeds to 54, and measured nonce rate after 10mins of hashing, then changed to 55 and again measured nonce rates. Compared the differences on a excel spreadsheet, and chose 54 or 55 depending on which produced higher hash rates for the chip.)
g) I Use only one pool for mining
h) renice the miner process to -14 or lower
h.1.1) sudo apt-get install htop
h.1.2) pi@bitfury / $ htop
h.1.3) Press F7 repeatedly to reduce nice.
HC Hardware Tuning:
Here's How I did it:
a) Buy Copper VGA RAM Heatsinks. Usually ships in sets of 8, so 2 packs per h-board.
a.1) I bought these: http://www.ebay.com/itm/161102078777?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
b) Affix each piece of VGA RAM Heatsink to the back of each BitFury chip on the H-Board. The RAM heatsinks come with thermal adhesives affixed.
c) Cut a 2 inch strip of DDR3 / DDR2 RAM heatskink for cooling the regulator area. Affix the heatsink to the back of board near the regulator with either thermally conductive glue or use some kind of thermal paste and small dabs of superglue / epoxy at the edges
d) Pencil mod the board until voltage reaches 0.8V. One of my boards is at 0.8V another at 0.84V. I would say 0.85V is the max after which either the regulator will shut down or the hash rate will drop dramatically.
e) Cool the boards with 120mm or bigger cooling fans.
f) Play around with best.cnf (I first changed of all the chip speeds to 54, and measured nonce rate after 10mins of hashing, then changed to 55 and again measured nonce rates. Compared the differences on a excel spreadsheet, and chose 54 or 55 depending on which produced higher hash rates for the chip.)
g) I Use only one pool for mining
h) renice the miner process to -14 or lower
Code:
2100 root 6 -14 33196 18864 4064 R 81.0 3.8 36h27:30 python ./mining_proxy.py -o us3.eclipsemc.com -p 3333 -cu XXXXXXXXXXX -cp XXXX -gp 8332 -v
h.1) I use htop to do ith.1.1) sudo apt-get install htop
h.1.2) pi@bitfury / $ htop
h.1.3) Press F7 repeatedly to reduce nice.
d) Pencil mod the board until voltage reaches 0.8V. One of my boards is at 0.8V another at 0.84V. I would say 0.85V is the max after which either the regulator will shut down or the hash rate will drop dramatically.
i usually donot measure ohms, I measure the output voltage of the regulator. But I think it should be between 1.05 to 1.08K on the mounted resistor.
thanx a lot for your report ... :-)
gona add it as .. hardcore moding version ...
d) Pencil mod the board until voltage reaches 0.8V. One of my boards is at 0.8V another at 0.84V. I would say 0.85V is the max after which either the regulator will shut down or the hash rate will drop dramatically.
i usually donot measure ohms, I measure the output voltage of the regulator. But I think it should be between 1.05 to 1.08K on the mounted resistor.
what about the area around the chip? you think this copper heatsinks are enough for dropping temp? ... how high is temp actualy? =)
sorry my english soo bad^^
d) Pencil mod the board until voltage reaches 0.8V. One of my boards is at 0.8V another at 0.84V. I would say 0.85V is the max after which either the regulator will shut down or the hash rate will drop dramatically.
i usually donot measure ohms, I measure the output voltage of the regulator. But I think it should be between 1.05 to 1.08K on the mounted resistor.
d) Pencil mod the board until voltage reaches 0.8V. One of my boards is at 0.8V another at 0.84V. I would say 0.85V is the max after which either the regulator will shut down or the hash rate will drop dramatically.
For your reference
Code:
1 aIfDSo 55 2.119 2.642 148 30 0 0 250 [0:0] 42 11 10 10 8 9 8 10 8 11 10 8 7 10 9 10 9 0 1 1 3 2 3 1 3 0 1 3 4 1 2 2 3
2 aIfDSo 55 2.663 2.526 186 5 0 0 239 [0:1] 1 11 12 8 12 12 12 12 12 11 12 12 12 12 12 12 12 1 0 4 0 0 0 0 0 0 0 0 0 0 0 0 0
3 aIfDSo 55 2.534 2.484 177 3 0 0 235 [0:2] 0 11 11 12 12 12 12 11 11 11 11 11 10 11 9 11 11 0 0 0 0 0 0 0 0 0 0 0 1 0 2 0 0
4 aIfDSo 55 2.749 2.664 192 26 0 0 252 [0:3] 21 9 11 12 10 12 10 13 12 14 14 11 13 12 12 13 14 4 2 1 3 1 3 1 2 0 0 3 1 2 2 1 0
5 aIfDSo 55 2.548 2.600 178 25 0 0 246 [0:4] 42 12 8 12 12 9 13 11 11 10 11 11 11 11 11 13 12 1 5 1 1 4 0 1 1 2 1 1 2 2 2 0 1
6 aIfDSo 55 2.305 2.547 161 14 0 0 241 [0:5] 21 10 11 6 9 11 11 10 9 10 10 11 10 11 11 11 10 1 0 5 2 0 0 1 1 1 1 0 1 0 0 0 1
7 aIfDSo 55 2.047 2.547 143 15 0 0 241 [0:6] 56 9 9 6 10 9 9 8 10 10 10 8 8 9 9 9 10 1 0 3 0 1 1 2 0 0 0 2 2 1 1 1 0
8 aIfDSo 54 2.262 2.505 158 6 0 0 237 [0:7] 0 10 9 10 10 10 10 10 10 9 10 11 11 9 10 10 9 0 1 0 0 0 0 0 0 1 1 0 0 2 0 0 1
9 aIfDSo 55 2.362 2.685 165 24 0 0 254 [0:8] 21 12 9 11 10 11 9 11 9 11 12 9 10 11 11 9 10 0 3 1 1 0 2 1 3 1 0 3 2 1 1 3 2
10 aIfDSo 55 2.620 2.558 183 13 0 0 242 [0:9] 0 12 11 12 12 11 11 13 11 12 9 11 12 11 12 11 12 0 1 0 0 2 2 0 1 0 3 1 0 1 0 2 0
11 aIfDSo 55 2.248 2.600 157 10 0 0 246 [0:A] 42 9 8 10 9 10 10 10 9 9 11 11 10 11 10 11 9 1 2 0 1 0 0 0 1 2 0 0 1 0 1 0 1
12 aIfDSo 55 2.763 2.653 193 21 0 0 251 [0:B] 21 12 12 12 13 12 13 14 11 11 14 12 12 11 12 13 9 1 1 1 0 1 1 0 3 3 0 2 1 2 1 0 4
13 aIfDSo 55 2.749 2.568 192 8 0 0 243 [0:C] 0 13 13 12 11 12 11 12 12 11 11 12 12 13 13 12 12 0 0 1 2 0 1 0 0 1 1 0 0 0 0 1 1
14 AIfDSo 55 1.489 2.568 104 73 0 0 243 [0:D] 288 7 5 7 6 5 8 8 8 5 7 7 7 4 6 8 6 4 6 4 5 6 3 3 4 6 4 4 4 7 5 3 5
15 aIfDSo 55 2.305 2.463 161 4 0 0 233 [0:E] 0 10 9 11 11 10 10 10 10 10 9 10 10 10 10 10 11 1 2 0 0 0 0 0 0 0 1 0 0 0 0 0 0
16 aIfDSo 55 2.334 2.748 163 30 0 0 260 [0:F] 63 13 10 8 11 11 8 11 10 8 8 12 11 10 11 10 11 0 2 4 1 1 4 1 2 4 4 0 1 2 1 2 1
17 aIfDSo 55 2.692 2.537 188 4 0 0 240 [1:0] 0 12 12 12 12 11 11 11 11 12 12 12 12 12 12 12 12 0 0 0 0 1 1 1 1 0 0 0 0 0 0 0 0
18 aIfDSo 55 2.405 2.484 168 19 0 0 235 [1:1] 59 11 10 7 11 10 10 11 10 10 11 10 11 11 12 12 11 0 1 4 0 1 2 1 2 2 1 2 1 1 0 0 1
19 aIfDSo 55 2.004 2.241 140 6 0 0 212 [1:2] 36 9 9 9 8 8 8 8 8 8 9 9 9 9 10 10 9 0 0 0 1 1 1 1 1 1 0 0 0 0 0 0 0
20 aIfDSo 55 2.147 2.410 150 2 0 0 228 [1:3] 36 9 9 9 8 9 9 10 10 10 10 9 10 10 10 9 9 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0
21 aIfDSo 55 2.305 2.473 161 11 0 0 234 [1:4] 0 9 11 10 10 10 9 10 10 9 11 10 11 11 9 10 11 2 0 1 1 0 1 0 0 2 0 1 0 0 2 1 0
22 aIfDSo 55 2.090 2.516 146 20 0 0 238 [1:5] 54 8 8 7 10 8 10 8 8 11 10 11 10 11 8 10 8 2 2 3 0 2 0 2 2 0 1 0 1 0 3 0 2
23 aIfDSo 55 2.334 2.621 163 9 0 0 248 [1:6] 0 10 8 11 9 11 11 10 10 10 10 11 11 9 11 10 11 1 3 0 2 0 0 0 0 0 0 0 0 2 0 1 0
24 aIfDSo 55 2.147 2.346 150 8 0 0 222 [1:7] 37 10 10 10 10 10 8 8 9 9 9 9 10 10 9 10 9 0 0 0 0 0 2 2 1 0 0 1 0 0 1 0 1
25 aIfDSo 55 2.577 2.368 180 5 0 0 224 [1:8] 0 10 11 11 11 12 12 12 12 12 12 11 11 11 11 11 10 1 0 0 0 0 0 0 0 0 0 1 1 1 0 0 1
26 aIfDSo 55 2.305 2.346 161 2 0 0 222 [1:9] 0 10 10 10 10 10 11 10 11 10 10 9 10 10 10 10 10 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0
27 aIfDSo 55 2.076 2.368 145 10 0 0 224 [1:A] 0 10 8 9 9 9 9 9 8 9 9 8 9 10 9 10 10 0 1 0 0 0 0 1 2 1 1 2 1 0 1 0 0
28 aIfDSo 55 1.961 2.336 137 5 0 0 221 [1:B] 0 9 9 7 8 9 9 9 8 9 9 9 9 8 8 8 9 0 0 2 1 0 0 0 1 0 0 0 0 0 0 1 0
29 aIfDSo 55 2.248 2.399 157 11 0 0 227 [1:C] 41 10 8 9 9 9 10 11 10 11 11 11 11 10 8 9 10 0 2 1 1 1 1 0 1 0 0 0 0 1 2 1 0
30 aIfDSo 55 2.477 2.505 173 18 0 0 237 [1:D] 12 10 11 9 11 12 11 10 10 11 11 12 11 12 11 12 9 2 1 3 1 0 1 2 2 1 1 0 1 0 1 0 2
31 aIfDSo 55 2.505 2.674 175 5 0 0 253 [1:E] 0 11 10 11 11 11 11 9 10 12 11 12 12 11 11 11 11 0 1 0 0 0 0 2 1 0 1 0 0 0 0 0 0
32 aIfDSo 55 2.291 2.759 160 9 0 0 261 [1:F] 21 10 10 11 10 11 10 10 8 9 10 10 10 10 10 10 11 1 1 0 1 0 1 1 2 1 0 0 0 0 0 1 0
33 aIfDSo 55 2.634 2.611 184 7 0 0 247 [2:0] 0 11 12 12 12 12 11 12 11 11 11 12 11 11 12 12 11 1 0 0 0 0 1 0 1 1 1 0 1 0 0 0 1
34 aIfDSo 55 2.205 2.505 154 21 0 0 237 [2:1] 0 9 11 8 10 11 11 10 8 10 9 10 9 11 10 8 9 2 0 3 1 0 0 1 2 1 2 1 2 0 1 3 2
35 aIfDSo 55 2.563 2.537 179 4 0 0 240 [2:2] 20 11 11 11 11 9 12 12 12 12 12 11 11 11 11 11 11 0 0 0 1 3 0 0 0 0 0 0 0 0 0 0 0
36 aIfDSo 55 2.434 2.653 170 5 0 0 251 [2:3] 21 11 11 11 11 9 10 10 11 11 10 11 11 11 11 11 10 0 0 0 0 2 1 1 0 0 0 0 0 0 0 0 1
37 aIfDSo 55 2.334 2.706 163 28 0 0 256 [2:4] 80 11 9 9 10 9 10 8 11 11 10 11 11 11 11 11 10 1 3 2 2 3 2 4 1 1 2 1 1 1 1 1 2
38 aIfDSo 55 2.520 2.674 176 15 0 0 253 [2:5] 21 10 11 11 12 12 12 10 11 11 12 12 11 10 10 10 11 2 1 1 0 0 0 1 1 1 0 0 1 2 2 2 1
39 aIfDSo 55 2.147 2.674 150 41 0 0 253 [2:6] 63 9 9 10 11 11 10 11 10 9 8 6 8 9 9 9 11 3 3 2 1 1 2 0 2 3 4 6 4 3 3 3 1
40 aIfDSo 55 2.291 2.653 160 17 0 0 251 [2:7] 40 10 9 10 11 11 7 11 10 11 9 10 10 10 10 10 11 1 2 1 0 0 4 0 1 0 2 2 1 1 1 1 0
41 aIfDSo 55 2.649 2.579 185 14 0 0 244 [2:8] 21 10 11 11 10 12 12 12 13 11 12 12 12 13 13 10 11 2 1 1 2 0 0 0 0 2 1 1 1 0 0 2 1
42 aIfDSo 55 2.706 2.611 189 9 0 0 247 [2:9] 36 12 13 13 11 12 12 11 10 11 11 12 12 12 12 12 13 1 0 0 2 1 0 1 2 1 1 0 0 0 0 0 0
43 aIfDSo 55 2.190 2.632 153 25 0 0 249 [2:A] 42 11 11 9 9 11 11 10 9 7 9 9 10 10 10 9 8 0 0 2 2 1 1 1 2 4 2 2 1 1 1 2 3
44 aIfDSo 55 2.677 2.685 187 7 0 0 254 [2:B] 21 12 11 11 12 12 11 13 13 12 10 12 12 12 10 12 12 0 1 1 0 0 1 0 0 0 2 0 0 0 2 0 0
45 aIfDSo 55 2.391 2.664 167 14 0 0 252 [2:C] 56 9 10 10 10 11 12 12 11 10 9 11 11 10 11 10 10 2 1 2 2 1 0 0 0 1 2 0 0 1 0 1 1
46 aIfDSo 55 2.377 2.695 166 32 0 0 255 [2:D] 25 9 9 11 9 10 8 9 12 13 13 9 11 11 11 11 10 3 3 1 3 3 5 4 1 0 0 3 1 1 1 1 2
2 aIfDSo 55 2.663 2.526 186 5 0 0 239 [0:1] 1 11 12 8 12 12 12 12 12 11 12 12 12 12 12 12 12 1 0 4 0 0 0 0 0 0 0 0 0 0 0 0 0
3 aIfDSo 55 2.534 2.484 177 3 0 0 235 [0:2] 0 11 11 12 12 12 12 11 11 11 11 11 10 11 9 11 11 0 0 0 0 0 0 0 0 0 0 0 1 0 2 0 0
4 aIfDSo 55 2.749 2.664 192 26 0 0 252 [0:3] 21 9 11 12 10 12 10 13 12 14 14 11 13 12 12 13 14 4 2 1 3 1 3 1 2 0 0 3 1 2 2 1 0
5 aIfDSo 55 2.548 2.600 178 25 0 0 246 [0:4] 42 12 8 12 12 9 13 11 11 10 11 11 11 11 11 13 12 1 5 1 1 4 0 1 1 2 1 1 2 2 2 0 1
6 aIfDSo 55 2.305 2.547 161 14 0 0 241 [0:5] 21 10 11 6 9 11 11 10 9 10 10 11 10 11 11 11 10 1 0 5 2 0 0 1 1 1 1 0 1 0 0 0 1
7 aIfDSo 55 2.047 2.547 143 15 0 0 241 [0:6] 56 9 9 6 10 9 9 8 10 10 10 8 8 9 9 9 10 1 0 3 0 1 1 2 0 0 0 2 2 1 1 1 0
8 aIfDSo 54 2.262 2.505 158 6 0 0 237 [0:7] 0 10 9 10 10 10 10 10 10 9 10 11 11 9 10 10 9 0 1 0 0 0 0 0 0 1 1 0 0 2 0 0 1
9 aIfDSo 55 2.362 2.685 165 24 0 0 254 [0:8] 21 12 9 11 10 11 9 11 9 11 12 9 10 11 11 9 10 0 3 1 1 0 2 1 3 1 0 3 2 1 1 3 2
10 aIfDSo 55 2.620 2.558 183 13 0 0 242 [0:9] 0 12 11 12 12 11 11 13 11 12 9 11 12 11 12 11 12 0 1 0 0 2 2 0 1 0 3 1 0 1 0 2 0
11 aIfDSo 55 2.248 2.600 157 10 0 0 246 [0:A] 42 9 8 10 9 10 10 10 9 9 11 11 10 11 10 11 9 1 2 0 1 0 0 0 1 2 0 0 1 0 1 0 1
12 aIfDSo 55 2.763 2.653 193 21 0 0 251 [0:B] 21 12 12 12 13 12 13 14 11 11 14 12 12 11 12 13 9 1 1 1 0 1 1 0 3 3 0 2 1 2 1 0 4
13 aIfDSo 55 2.749 2.568 192 8 0 0 243 [0:C] 0 13 13 12 11 12 11 12 12 11 11 12 12 13 13 12 12 0 0 1 2 0 1 0 0 1 1 0 0 0 0 1 1
14 AIfDSo 55 1.489 2.568 104 73 0 0 243 [0:D] 288 7 5 7 6 5 8 8 8 5 7 7 7 4 6 8 6 4 6 4 5 6 3 3 4 6 4 4 4 7 5 3 5
15 aIfDSo 55 2.305 2.463 161 4 0 0 233 [0:E] 0 10 9 11 11 10 10 10 10 10 9 10 10 10 10 10 11 1 2 0 0 0 0 0 0 0 1 0 0 0 0 0 0
16 aIfDSo 55 2.334 2.748 163 30 0 0 260 [0:F] 63 13 10 8 11 11 8 11 10 8 8 12 11 10 11 10 11 0 2 4 1 1 4 1 2 4 4 0 1 2 1 2 1
17 aIfDSo 55 2.692 2.537 188 4 0 0 240 [1:0] 0 12 12 12 12 11 11 11 11 12 12 12 12 12 12 12 12 0 0 0 0 1 1 1 1 0 0 0 0 0 0 0 0
18 aIfDSo 55 2.405 2.484 168 19 0 0 235 [1:1] 59 11 10 7 11 10 10 11 10 10 11 10 11 11 12 12 11 0 1 4 0 1 2 1 2 2 1 2 1 1 0 0 1
19 aIfDSo 55 2.004 2.241 140 6 0 0 212 [1:2] 36 9 9 9 8 8 8 8 8 8 9 9 9 9 10 10 9 0 0 0 1 1 1 1 1 1 0 0 0 0 0 0 0
20 aIfDSo 55 2.147 2.410 150 2 0 0 228 [1:3] 36 9 9 9 8 9 9 10 10 10 10 9 10 10 10 9 9 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0
21 aIfDSo 55 2.305 2.473 161 11 0 0 234 [1:4] 0 9 11 10 10 10 9 10 10 9 11 10 11 11 9 10 11 2 0 1 1 0 1 0 0 2 0 1 0 0 2 1 0
22 aIfDSo 55 2.090 2.516 146 20 0 0 238 [1:5] 54 8 8 7 10 8 10 8 8 11 10 11 10 11 8 10 8 2 2 3 0 2 0 2 2 0 1 0 1 0 3 0 2
23 aIfDSo 55 2.334 2.621 163 9 0 0 248 [1:6] 0 10 8 11 9 11 11 10 10 10 10 11 11 9 11 10 11 1 3 0 2 0 0 0 0 0 0 0 0 2 0 1 0
24 aIfDSo 55 2.147 2.346 150 8 0 0 222 [1:7] 37 10 10 10 10 10 8 8 9 9 9 9 10 10 9 10 9 0 0 0 0 0 2 2 1 0 0 1 0 0 1 0 1
25 aIfDSo 55 2.577 2.368 180 5 0 0 224 [1:8] 0 10 11 11 11 12 12 12 12 12 12 11 11 11 11 11 10 1 0 0 0 0 0 0 0 0 0 1 1 1 0 0 1
26 aIfDSo 55 2.305 2.346 161 2 0 0 222 [1:9] 0 10 10 10 10 10 11 10 11 10 10 9 10 10 10 10 10 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0
27 aIfDSo 55 2.076 2.368 145 10 0 0 224 [1:A] 0 10 8 9 9 9 9 9 8 9 9 8 9 10 9 10 10 0 1 0 0 0 0 1 2 1 1 2 1 0 1 0 0
28 aIfDSo 55 1.961 2.336 137 5 0 0 221 [1:B] 0 9 9 7 8 9 9 9 8 9 9 9 9 8 8 8 9 0 0 2 1 0 0 0 1 0 0 0 0 0 0 1 0
29 aIfDSo 55 2.248 2.399 157 11 0 0 227 [1:C] 41 10 8 9 9 9 10 11 10 11 11 11 11 10 8 9 10 0 2 1 1 1 1 0 1 0 0 0 0 1 2 1 0
30 aIfDSo 55 2.477 2.505 173 18 0 0 237 [1:D] 12 10 11 9 11 12 11 10 10 11 11 12 11 12 11 12 9 2 1 3 1 0 1 2 2 1 1 0 1 0 1 0 2
31 aIfDSo 55 2.505 2.674 175 5 0 0 253 [1:E] 0 11 10 11 11 11 11 9 10 12 11 12 12 11 11 11 11 0 1 0 0 0 0 2 1 0 1 0 0 0 0 0 0
32 aIfDSo 55 2.291 2.759 160 9 0 0 261 [1:F] 21 10 10 11 10 11 10 10 8 9 10 10 10 10 10 10 11 1 1 0 1 0 1 1 2 1 0 0 0 0 0 1 0
33 aIfDSo 55 2.634 2.611 184 7 0 0 247 [2:0] 0 11 12 12 12 12 11 12 11 11 11 12 11 11 12 12 11 1 0 0 0 0 1 0 1 1 1 0 1 0 0 0 1
34 aIfDSo 55 2.205 2.505 154 21 0 0 237 [2:1] 0 9 11 8 10 11 11 10 8 10 9 10 9 11 10 8 9 2 0 3 1 0 0 1 2 1 2 1 2 0 1 3 2
35 aIfDSo 55 2.563 2.537 179 4 0 0 240 [2:2] 20 11 11 11 11 9 12 12 12 12 12 11 11 11 11 11 11 0 0 0 1 3 0 0 0 0 0 0 0 0 0 0 0
36 aIfDSo 55 2.434 2.653 170 5 0 0 251 [2:3] 21 11 11 11 11 9 10 10 11 11 10 11 11 11 11 11 10 0 0 0 0 2 1 1 0 0 0 0 0 0 0 0 1
37 aIfDSo 55 2.334 2.706 163 28 0 0 256 [2:4] 80 11 9 9 10 9 10 8 11 11 10 11 11 11 11 11 10 1 3 2 2 3 2 4 1 1 2 1 1 1 1 1 2
38 aIfDSo 55 2.520 2.674 176 15 0 0 253 [2:5] 21 10 11 11 12 12 12 10 11 11 12 12 11 10 10 10 11 2 1 1 0 0 0 1 1 1 0 0 1 2 2 2 1
39 aIfDSo 55 2.147 2.674 150 41 0 0 253 [2:6] 63 9 9 10 11 11 10 11 10 9 8 6 8 9 9 9 11 3 3 2 1 1 2 0 2 3 4 6 4 3 3 3 1
40 aIfDSo 55 2.291 2.653 160 17 0 0 251 [2:7] 40 10 9 10 11 11 7 11 10 11 9 10 10 10 10 10 11 1 2 1 0 0 4 0 1 0 2 2 1 1 1 1 0
41 aIfDSo 55 2.649 2.579 185 14 0 0 244 [2:8] 21 10 11 11 10 12 12 12 13 11 12 12 12 13 13 10 11 2 1 1 2 0 0 0 0 2 1 1 1 0 0 2 1
42 aIfDSo 55 2.706 2.611 189 9 0 0 247 [2:9] 36 12 13 13 11 12 12 11 10 11 11 12 12 12 12 12 13 1 0 0 2 1 0 1 2 1 1 0 0 0 0 0 0
43 aIfDSo 55 2.190 2.632 153 25 0 0 249 [2:A] 42 11 11 9 9 11 11 10 9 7 9 9 10 10 10 9 8 0 0 2 2 1 1 1 2 4 2 2 1 1 1 2 3
44 aIfDSo 55 2.677 2.685 187 7 0 0 254 [2:B] 21 12 11 11 12 12 11 13 13 12 10 12 12 12 10 12 12 0 1 1 0 0 1 0 0 0 2 0 0 0 2 0 0
45 aIfDSo 55 2.391 2.664 167 14 0 0 252 [2:C] 56 9 10 10 10 11 12 12 11 10 9 11 11 10 11 10 10 2 1 2 2 1 0 0 0 1 2 0 0 1 0 1 1
46 aIfDSo 55 2.377 2.695 166 32 0 0 255 [2:D] 25 9 9 11 9 10 8 9 12 13 13 9 11 11 11 11 10 3 3 1 3 3 5 4 1 0 0 3 1 1 1 1 2
Here's How I did it:
a) Buy Copper VGA RAM Heatsinks. Usually ships in sets of 8, so 2 packs per h-board.
a.1) I bought these: http://www.ebay.com/itm/161102078777?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
b) Affix each piece of VGA RAM Heatsink to the back of each BitFury chip on the H-Board. The RAM heatsinks come with thermal adhesives affixed.
c) Cut a 2 inch strip of DDR3 / DDR2 RAM heatskink for cooling the regulator area. Affix the heatsink to the back of board near the regulator with either thermally conductive glue or use some kind of thermal paste and small dabs of superglue / epoxy at the edges
d) Pencil mod the board until voltage reaches 0.8V. One of my boards is at 0.8V another at 0.84V. I would say 0.85V is the max after which either the regulator will shut down or the hash rate will drop dramatically.
e) Cool the boards with 120mm or bigger cooling fans.
f) Play around with best.cnf (I first changed of all the chip speeds to 54, and measured nonce rate after 10mins of hashing, then changed to 55 and again measured nonce rates. Compared the differences on a excel spreadsheet, and chose 54 or 55 depending on which produced higher hash rates for the chip.)
g) I Use only one pool for mining
h) renice the miner proxy process to -14 or lower
Code:
2100 root 6 -14 33196 18864 4064 R 81.0 3.8 36h27:30 python ./mining_proxy.py -o us3.eclipsemc.com -p 3333 -cu XXXXXXXXXXX -cp XXXX -gp 8332 -v
h.1) I use htop to do ith.1.1) sudo apt-get install htop
h.1.2) pi@bitfury / $ sudo htop
h.1.3) Press F7 repeatedly to reduce nice.
Can you guess the noncerate of the card within +-1GH/s ?
38 GH .. ?
right on
https://i.imgur.com/AyQsg77.png
now how did you manage that? Crazy. Due to better cooling or mostly due to massive overclocking, pencil mod it down to .. 1k? 1,05k? Of course fine tuning in the end.. but.. 38? damn!
What's the solution when you see lots of MISO errors?
by lots I mean:
by lots I mean:
Code:
Last login: Sat Sep 14 17:51:00 2013 from 192.168.1.2
{ "stats":
{"speed": 880, "noncerate": 21.589, "noncerateperchip":1.349, "hashrate":28.678
, "good":568, "errors":138, "spi-errors":0, "miso-errors":126, "jobs":140, "record":0.000
,"boards": [
{ "slot": "0", "speed": 880, "noncerate":21.589, "hashrate": 28.678, "good": 568
, "errors": 138, "spi-errors": 0, "miso-errors":[b]126[/b] }
]
} }
/cet { "stats":
{"speed": 880, "noncerate": 21.589, "noncerateperchip":1.349, "hashrate":28.678
, "good":568, "errors":138, "spi-errors":0, "miso-errors":126, "jobs":140, "record":0.000
,"boards": [
{ "slot": "0", "speed": 880, "noncerate":21.589, "hashrate": 28.678, "good": 568
, "errors": 138, "spi-errors": 0, "miso-errors":[b]126[/b] }
]
} }
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