[GUIDE] BitFury Miner Support/Tuning

[BenTuras]

Code:

dd if=/dev/sdx of=/path/to/image bs=1M

how do i determine what sdx and /path/to/image is in Ubuntu?

Just type df and you should see the sd card and known which /dev/sdx it is.
Why do you want to copy the bad card ?
Why not just download a fresh image and write it to a new sd card ?

[cypherdoc]

Code:

dd if=/dev/sdx of=/path/to/image bs=1M

how do i determine what sdx and /path/to/image is in Ubuntu?

Just type df and you should see the sd card and known which /dev/sdx it is.
Why do you want to copy the bad card ?
Why not just download a fresh image and write it to a new sd card ?

i have a good card to copy from.

do you have a link to download a fresh image for v2.2 h boards, and v3 m boards?

[BenTuras]

Code:

dd if=/dev/sdx of=/path/to/image bs=1M

how do i determine what sdx and /path/to/image is in Ubuntu?

Just type df and you should see the sd card and known which /dev/sdx it is.
Why do you want to copy the bad card ?
Why not just download a fresh image and write it to a new sd card ?

i have a good card to copy from.

do you have a link to download a fresh image for v2.2 h boards, and v3 m boards?

There are links in OP

[greaterninja]

So about 12 hours ago my bitfury miner stopped.

I was wondering what the hell happened.  I thought it was my cards or SD card again.


turns out I can mine on slush's pool and elgius but not on s1.ghash.io:3333

not sure wtf happened.

[GandalfG]

So about 12 hours ago my bitfury miner stopped.

I was wondering what the hell happened.  I thought it was my cards or SD card again.


turns out I can mine on slush's pool and elgius but not on s1.ghash.io:3333

not sure wtf happened.

Proper adressess
US
us1.ghash.io:3333

EU
nl1.ghash.io:3334

try use stratum+tcp://us1.ghash.io:3334

[juhakall]

So about 12 hours ago my bitfury miner stopped.

I was wondering what the hell happened.  I thought it was my cards or SD card again.


turns out I can mine on slush's pool and elgius but not on s1.ghash.io:3333

not sure wtf happened.

Proper adressess
US
us1.ghash.io:3333

EU
nl1.ghash.io:3334

try use stratum+tcp://us1.ghash.io:3334

ghash.io just had some downtime right at that moment.

I'm not sure about stratum proxy, but at least with BFGMiner if you omit the stratum+tcp:// part connecting to ghash.io will take a very long time. Haven't seen any other pool with that kind of issue. Without stratum+tcp://, the miner will try to connect using HTTP at first, and on all other pools, that always fails immediately so it tries stratum next.

[goxed]

Code:

1	AIfDSo	56	2.777	2.558	194	0	0	0	242	[0:0]	1	12 12 12 12 13 13 12 12 12 12 12 12 12 12 12 12 	0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
2	AIfDSo	55	2.477	2.494	173	1	0	0	236	[0:1]	37	11 11 11 11 11 10 10 11 11 11 11 11 11 10 11 11 	0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 
3	AIfDSo	54	2.334	2.452	163	3	0	0	232	[0:2]	38	11 11 11 11 11 10 10 10 10 10 10 9 10 10 9 10 	0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 1 
4	AIfDSo	56	2.620	2.336	183	1	0	0	221	[0:3]	2	12 11 11 11 11 11 11 11 11 12 11 12 12 12 12 12 	0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 
5	AIfDSo	54	2.520	2.632	176	12	0	0	249	[0:4]	1	10 11 11 12 11 11 9 12 12 11 11 11 11 12 11 10 	1 0 0 0 1 1 3 0 0 1 1 1 1 0 1 1 
6	AIfDSo	54	2.362	2.706	165	14	0	0	256	[0:5]	5	9 10 11 11 10 11 11 11 10 10 11 11 10 10 9 10 	2 1 1 1 2 0 0 0 1 1 0 0 1 1 2 1 
7	AIfDSo	55	2.033	2.759	142	26	0	0	261	[0:6]	36	8 9 9 8 8 8 9 10 10 8 10 9 10 9 11 6 	2 1 1 2 2 2 1 1 1 3 1 2 1 2 0 4 	speed down
8	AIfDSo	54	2.849	2.706	199	1	0	0	256	[0:7]	2	12 12 12 12 12 12 12 13 13 13 13 12 13 13 13 12 	0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 
9	AIfDSo	56	2.377	2.399	166	0	0	0	227	[0:8]	4	10 11 11 11 11 11 11 10 10 10 10 10 10 10 10 10 	0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
10	AIfDSo	56	2.448	2.399	171	0	0	0	227	[0:9]	6	10 10 10 11 11 11 11 11 11 11 11 11 11 11 10 10 	0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
11	AIfDSo	54	2.462	2.357	172	0	0	0	223	[0:A]	5	11 11 11 11 11 11 11 11 11 11 10 10 10 10 11 11 	0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 	speed up
12	AIfDSo	54	2.248	2.378	157	0	0	0	225	[0:B]	26	10 10 10 10 10 10 10 10 10 10 10 10 10 9 9 9 	0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
13	AIfDSo	56	2.419	2.537	169	2	0	0	240	[0:C]	3	11 11 11 11 11 11 11 10 10 10 9 10 11 10 11 11 	0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 
14	AIfDSo	56	2.591	2.431	181	2	0	0	230	[0:D]	0	12 12 11 11 11 11 11 10 11 10 11 12 12 12 12 12 	0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 
15	AIfDSo	54	1.890	2.960	132	102	0	0	280	[0:E]	7	11 9 10 9 9 9 10 7 6 10 9 8 8 4 5 8 	4 6 5 6 6 6 5 8 8 4 5 6 6 10 10 7 
speed:824 noncerate[GH/s]:36.407 (2.427/chip) hashrate[GH/s]:38.104 good:2543 errors:164 spi-errors:0 miso-errors:0 jobs:375 (record[GH/s]:37.037)
0:	824	36.407	38.104	2543	164	0	0

Used a modded EOL card with 15 chips for this test. At 0.9V

[Cablez]

And how well does that regulator seem to work?

[goxed]

And how well does that regulator seem to work?

very well in fact. No overheating issues until max 1V that I have tested, but the bitfury chips get super hot, since I donot have adequate heatsinking for them.

[cypherdoc]

And how well does that regulator seem to work?

very well in fact. No overheating issues until max 1V that I have tested, but the bitfury chips get super hot, since I donot have adequate heatsinking for them.

why can't you mount the heatsinks on the chips themselves?  are they mounted on the backside?

[goxed]

And how well does that regulator seem to work?

very well in fact. No overheating issues until max 1V that I have tested, but the bitfury chips get super hot, since I donot have adequate heatsinking for them.

why can't you mount the heatsinks on the chips themselves?  are they mounted on the backside?

yes there are heatsinks on the backside as well. I guess I need to source beefier heatsinks to test the board at >0.85V

[Keefe]

And how well does that regulator seem to work?

very well in fact. No overheating issues until max 1V that I have tested, but the bitfury chips get super hot, since I donot have adequate heatsinking for them.

Do you know how many amps you're pulling from that 30A regulator? Don't you want something a little beefier like 40A? And is an output side inductor unnecessary for that regulator?

[goxed]

And how well does that regulator seem to work?

very well in fact. No overheating issues until max 1V that I have tested, but the bitfury chips get super hot, since I donot have adequate heatsinking for them.

Do you know how many amps you're pulling from that 30A regulator? Don't you want something a little beefier like 40A? And is an output side inductor unnecessary for that regulator?

Actually I donot have the testing tools to measure > 10A current. This chip is actually a 2phase regulator with 20A OCP limit per phase. So I am drawing less than 40A for sure. There are 2 0.2uH inductors inside the chip . If bitfury will ever reduce prices of their chips, my plan is to get boards built and quickly solder the chips and couple of decoupling caps thrown in and connect this regulator on the outside. No fuss no muss. 

[Keefe]

And how well does that regulator seem to work?

very well in fact. No overheating issues until max 1V that I have tested, but the bitfury chips get super hot, since I donot have adequate heatsinking for them.

Do you know how many amps you're pulling from that 30A regulator? Don't you want something a little beefier like 40A? And is an output side inductor unnecessary for that regulator?

Actually I donot have the testing tools to measure > 10A current. This chip is actually a 2phase regulator with 20A OCP limit per phase. So I am drawing less than 40A for sure. There are 2 0.2uH inductors inside the chip . If bitfury will ever reduce prices of their chips, my plan is to get boards built and quickly solder the chips and couple of decoupling caps thrown in and connect this regulator on the outside. No fuss no muss.  

Nice! Maybe you could determine the amperage by measuring the resistance of the wire bundle between the reg and card while powered off, and voltage drop while running. Though it might not be possible to isolate it for the resistance measurement without desoldering.

Do those wires get hot? Could you make H-boards with that Intersil reg onboard?

[darkfriend77]

hmmm .. somehow after plugin back one of my old h-boards ... one just stopped getting recoginzed.

I tried to use different slots without success and remarked that having other boards in subsequent slots in the same bank makes them also unrecognized.

I have no idear what happend I can't find any traces of something bad ... does any one can help or has an idear?

https://dl.dropboxusercontent.com/u/43738391/1.JPG

https://dl.dropboxusercontent.com/u/43738391/2.JPG


What can I check? Anyone?

[Keefe]

hmmm .. somehow after plugin back one of my old h-boards ... one just stopped getting recoginzed.

I tried to use different slots without success and remarked that having other boards in subsequent slots in the same bank makes them also unrecognized.

I have no idear what happend I can't find any traces of something bad ... does any one can help or has an idear?

https://dl.dropboxusercontent.com/u/43738391/1.JPG

https://dl.dropboxusercontent.com/u/43738391/2.JPG


What can I check? Anyone?

Is the VRM working? Check voltage at the top of the Pulse inductor. You can use the M-board's ground screw for negative if you don't need an accurate reading.

[goxed]

And how well does that regulator seem to work?

very well in fact. No overheating issues until max 1V that I have tested, but the bitfury chips get super hot, since I donot have adequate heatsinking for them.

Do you know how many amps you're pulling from that 30A regulator? Don't you want something a little beefier like 40A? And is an output side inductor unnecessary for that regulator?

Actually I donot have the testing tools to measure > 10A current. This chip is actually a 2phase regulator with 20A OCP limit per phase. So I am drawing less than 40A for sure. There are 2 0.2uH inductors inside the chip . If bitfury will ever reduce prices of their chips, my plan is to get boards built and quickly solder the chips and couple of decoupling caps thrown in and connect this regulator on the outside. No fuss no muss.  

Nice! Maybe you could determine the amperage by measuring the resistance of the wire bundle between the reg and card while powered off, and voltage drop while running. Though it might not be possible to isolate it for the resistance measurement without desoldering.

Do those wires get hot? Could you make H-boards with that Intersil reg onboard?

I will try that. Right now I am doing stress test with the regulator

 The wires are a bit warm but nowhere near hot .

My PCB dev skills are pretty rusty now, I used Orcad like 10yrs ago for school projects , and haven't designed any more boards after that.


I am trying to re-learn now with Eagle software, and it will take some time for me to design a board with a new regulator. Thats why I wanted to go ahead and get the original design fabbed and plug an external regulator. 

[cypherdoc]

Dave, we need the link the v3 sd card image.

[Gyrsur]

why do my hashrate diversify so much with "autotune off" and "55" for all chips. between 520 and 440.

[Keefe]

why do my hashrate diversify so much with "autotune off" and "55" for all chips. between 520 and 440.

You probably have some H-boards with overloaded VRMs. Check /run/shm/.stat.log every 5 minutes and see if the hashrate of some chips are changing significantly. If so, turn down the speeds on all the chips on that H-board until that H-board's VRM can handle it.