Avalon 741 hashing at low speed (0.01 BTC REWARD)

[edrich]

0.01BTC REWARD for the person who cal help me achieve 6.5+ TH/S on this miner.
Hi, I recently purchased an Avalon 741, but have only managed to get it to run at 4TH.
Outside temp is in the mid 20's.
Using 2x 700w PSU's
Miner is right next to a window, pulling fresh air from outside.
I will really appreciate any help.
0.01BTC REWARD for the person who cal help me achieve 6.5+ TH/S on this miner.

Here is the Stats from CG miner:
Elapsed 1h 23m 36s   GHSav 4456.48   Accepted 1,492   Rejected 7   NetworkBlocks 9   BestShare 2,427,734

Pools
Pool 0 URL stratum+tcp://stratum.slushpool.com:3333   StratumActive True   Use eddiegarero.Avalon   Status Alive   StratumDifficulty 3225   GetWorks 180   Accepted 1492   Rejected 7   Stale 0   LST Fri Nov 3 20:05:56 2017   LSD 3225

Avalon Devices
Device ASC0-AV7-0   Enabled Y   Status Alive   GHSav 4458.91   GHS5s 3451.99   GHS1m 3793.77   GHS5m 3902.60    GHS15m4049.36   LastValidWork Fri Nov 3 20:06:04 2017


Avalon Devices Status
Elapsed 1h 23m 39s   Device A741S-0-1   MM 7411706-3162860   DNA 060f   LocalWorks 222028   DH 27.810%   GHSasc 6928.86   WU 62546.74   Temperature(C)   28 / 86 Fan 5100RPM / 95%   PG 15

[Steamtyme]

Can you post a screen cap of the miner log. It will give a much more accurate look at how everything is working including the hash boards.
Have you checked to see that your voltage offset is 0?

[edrich]

Can you post a screen cap of the miner log. It will give a much more accurate look at how everything is working including the hash boards.
Have you checked to see that your voltage offset is 0?

Yes Voltage offset is 0

Minerlog: DNA[01379dca3b86060f]
    Elapsed[8713]
    MW[96382 96373 96360 96360]
    LW[385475]
    MH[44 25 16 28]
    HW[113]
    DH[27.542%]
    Temp[30]
    TMax[93]
    Fan[5100]
    FanR[100%]
    Vi[1038 1038 1054 1054]
    Vo[4323 4314 4392 4364]
    GHSmm[6929.22]
    WU[61115.59]
    Freq[615.17]
    PG[15]
    Led[0]
    MW0[2 297 287 246 302 242 257 272 118 117 256 193 246 174 268 194 271 246 241 277 280 241]
    MW1[0 270 287 259 295 265 280 215 291 286 201 109 164 136 293 293 159 190 297 226 276 284]
    MW2[33 193 151 113 66 33 154 70 24 165 65 32 38 26 50 39 117 27 150 41 126 111]
    MW3[2 269 298 248 270 293 294 226 301 303 311 262 276 280 234 270 301 289 272 262 292 271]
    TA[88]
    ECHU[0 0 0 0]
    ECMM[0]
    FM[1]
    CRC[15 0 457 0]
    PAIRS[0 0 0]
    PVT_T[21-61/10-67/63 21-63/0-93/64 19-61/0-80/62 21-59/18-72/60],MM Count=1,Smart Speed=1,Connecter=AUC,AUC VER=AUC-20151208,AUC I2C Speed=400000,AUC I2C XDelay=19200,AUC Sensor=14483,AUC Temperature=31.37,Connection Overloaded=false,Voltage Offset=0,Nonce Mask=29,USB Pipe=0,USB Delay=r0 0.000000 w0 0.000000,USB tmo=0 0|STATS=1,ID=POOL0,Elapsed=8710,Calls=0,Wait=0.000000,Max=0.000000,Min=99999999.000000,Pool Calls=0,Pool Attempts=0,Pool Wait=0.000000,Pool Max=0.000000,Pool Min=99999999.000000,Pool Av=0.000000,Work Had Roll Time=false,Work Can Roll=false,Work Had Expire=false,Work Roll Time=0,Work Diff=3225.00000000,Min Diff=2048.00000000,Max Diff=4399.00000000,Min Diff Count=321,Max Diff Count=4168,Times Sent=2656,Bytes Sent=314873,Times Recv=2970,Bytes Recv=511979,Net Bytes Sent=314873,Net Bytes Recv=511979|'
[STATUS] =>
(
   [STATUS] => S
   [When] => 1509736059
   

Code:

 => 70
   [Msg] => CGMiner stats
   [Description] => cgminer 4.10.0
)
[STATS0] =>
(
   [STATS] => 0
   [ID] => AV70
   [Elapsed] => 8710
   [Calls] => 0
   [Wait] => 0.000000
   [Max] => 0.000000
   [Min] => 99999999.000000
   [MM ID1] => Ver[7411706-3162860]
    DNA[01379dca3b86060f]
    Elapsed[8713]
    MW[96382 96373 96360 96360]
    LW[385475]
    MH[44 25 16 28]
    HW[113]
    DH[27.542%]
    Temp[30]
    TMax[93]
    Fan[5100]
    FanR[100%]
    Vi[1038 1038 1054 1054]
    Vo[4323 4314 4392 4364]
    GHSmm[6929.22]
    WU[61115.59]
    Freq[615.17]
    PG[15]
    Led[0]
    MW0[2 297 287 246 302 242 257 272 118 117 256 193 246 174 268 194 271 246 241 277 280 241]
    MW1[0 270 287 259 295 265 280 215 291 286 201 109 164 136 293 293 159 190 297 226 276 284]
    MW2[33 193 151 113 66 33 154 70 24 165 65 32 38 26 50 39 117 27 150 41 126 111]
    MW3[2 269 298 248 270 293 294 226 301 303 311 262 276 280 234 270 301 289 272 262 292 271]
    TA[88]
    ECHU[0 0 0 0]
    ECMM[0]
    FM[1]
    CRC[15 0 457 0]
    PAIRS[0 0 0]
    PVT_T[21-61/10-67/63 21-63/0-93/64 19-61/0-80/62 21-59/18-72/60]
   [MM Count] => 1
   [Smart Speed] => 1
   [Connecter] => AUC
   [AUC VER] => AUC-20151208
   [AUC I2C Speed] => 400000
   [AUC I2C XDelay] => 19200
   [AUC Sensor] => 14483
   [AUC Temperature] => 31.37
   [Connection Overloaded] => false
   [Voltage Offset] => 0
   [Nonce Mask] => 29
   [USB Pipe] => 0
   [USB Delay] => r0 0.000000 w0 0.000000
   [USB tmo] => 0 0
)
[STATS1] =>
(
   [STATS] => 1
   [ID] => POOL0
   [Elapsed] => 8710
   [Calls] => 0
   [Wait] => 0.000000
   [Max] => 0.000000
   [Min] => 99999999.000000
   [Pool Calls] => 0
   [Pool Attempts] => 0
   [Pool Wait] => 0.000000
   [Pool Max] => 0.000000
   [Pool Min] => 99999999.000000
   [Pool Av] => 0.000000
   [Work Had Roll Time] => false
   [Work Can Roll] => false
   [Work Had Expire] => false
   [Work Roll Time] => 0
   [Work Diff] => 3225.00000000
   [Min Diff] => 2048.00000000
   [Max Diff] => 4399.00000000
   [Min Diff Count] => 321
   [Max Diff Count] => 4168
   [Times Sent] => 2656
   [Bytes Sent] => 314873
   [Times Recv] => 2970
   [Bytes Recv] => 511979
   [Net Bytes Sent] => 314873
   [Net Bytes Recv] => 511979

[edrich]

I added an reward for the person who can help me

[timk225]

At least you're mining, I got my full 741 setup yesterday and haven't been able to connect to the controller to set it up:  https://bitcointalk.org/index.php?topic=2356425.0

I remember back in the summer of '13, I had a hell of a time getting cgminer working to GPU mine, took about a month to get it to work!

[Steamtyme]

I added an reward for the person who can help me

Hey there looking at the mw lines I think there is an issue with some of your chips. I can't say for sure but those lines  should all have roughly the same values.

Have you tried swapping the psu's around to see if the log readout is the same, maybe one of your psu's isn't up to snuff.

I would send that I go to a Canaan support ticket they will definitly get you sorted.

If nothing else the reward will probably get you some good responses.

[edrich]

At least you're mining, I got my full 741 setup yesterday and haven't been able to connect to the controller to set it up:  https://bitcointalk.org/index.php?topic=2356425.0

I remember back in the summer of '13, I had a hell of a time getting cgminer working to GPU mine, took about a month to get it to work!

Wow, Well good luck with that one!!

[edrich]

I added an reward for the person who can help me

Hey there looking at the mw lines I think there is an issue with some of your chips. I can't say for sure but those lines  should all have roughly the same values.

Have you tried swapping the psu's around to see if the log readout is the same, maybe one of your psu's isn't up to snuff.

I would send that I go to a Canaan support ticket they will definitly get you sorted.

If nothing else the reward will probably get you some good responses.

Hi, thank you. I will try your suggestions and hopefully I can find and solve the problem.

[lightfoot]

What is the voltage reading at the miner on your 12v lines? I've noticed that Avalon will throttle down chips if the DC voltage starts dropping due to power supplies being overloaded. Do you have very manly supplies running to this thing, and are the plugs warm to the touch?

[edrich]

What is the voltage reading at the miner on your 12v lines? I've noticed that Avalon will throttle down chips if the DC voltage starts dropping due to power supplies being overloaded. Do you have very manly supplies running to this thing, and are the plugs warm to the touch?

Hi,
I am using 2x700w platinum PSu's.

and are the plugs warm to the touch

No, the plugs aren't warm to the touch.
And as for the voltage reading, i am not sure where to find it...but believe it could be this?:
Vo[4309 4300 4318 4318]
Thanks a lot!!!

[lightfoot]

What is the voltage reading at the miner on your 12v lines? I've noticed that Avalon will throttle down chips if the DC voltage starts dropping due to power supplies being overloaded. Do you have very manly supplies running to this thing, and are the plugs warm to the touch?

Hi,
I am using 2x700w platinum PSu's.

and are the plugs warm to the touch

No, the plugs aren't warm to the touch.
And as for the voltage reading, i am not sure where to find it...but believe it could be this?:
Vo[4309 4300 4318 4318]
Thanks a lot!!!

That might not quite be enough, have you tried running it with just one side powered? That can tell you quickly if a side is down.

Got a volt-meter? if so can you check the voltage on the 12v line from each power supply (you can check on the 4 pin connector, the 8 pin one, places like that). See if it's 12v or less. As a point of reference, my stock A6 will run at about 70-80% of speed when the voltage rail is down to 11.5v.

C

[lightfoot]

Actually I'm wondering if Vi is voltage in. If so 10.5v is a very low amount from a 12v supply. Yeah, check the voltage on the supplies.

[Steamtyme]

Did you ever try swapping the side that the psu's are powering and them check the log to see if mw2 still shows the lame numbers?
Also what type of psu are you running? Brand, I just want to look up the specs.

What type of a circuit are you running on, did it ever achieve higher hashrate, and then drop or is this the max it has reached?

Did you open a ticket with Canaan?

[edrich]

Hi, I will test the voltage this afternoon after school.
These are the psu's im using:
http://www.loot.co.za/product/cooler-master-masterwatt-lite-700-700w-atx-black-power/zfvk-4864-ga60?referrer=googlemerchant&PPC=Y&gclid=CjwKCAjw7frPBRBVEiwAuDf_LaCeoO3R31bvz-lKQE96S4mvcZlasltciaIC9FYqhs20milJxI978hoCq1IQAvD_BwE
And no, its always been running at this speed.
Thanks a lot for all your inputs
regards,

[Steamtyme]

What type of electrical circuit are you on. That PSU says those ratings are in a 200-240 volt service. If you are plugged into a nirmal 110 residential, that would explain a low voltage.

[edrich]

What type of electrical circuit are you on. That PSU says those ratings are in a 200-240 volt service. If you are plugged into a nirmal 110 residential, that would explain a low voltage.

Here in South Africa all plugs are 220-240V, so that shouldn't be the problem

[edrich]

What is the voltage reading at the miner on your 12v lines? I've noticed that Avalon will throttle down chips if the DC voltage starts dropping due to power supplies being overloaded. Do you have very manly supplies running to this thing, and are the plugs warm to the touch?

Hi,
I am using 2x700w platinum PSu's.

and are the plugs warm to the touch

No, the plugs aren't warm to the touch.
And as for the voltage reading, i am not sure where to find it...but believe it could be this?:
Vo[4309 4300 4318 4318]
Thanks a lot!!!

That might not quite be enough, have you tried running it with just one side powered? That can tell you quickly if a side is down.

Got a volt-meter? if so can you check the voltage on the 12v line from each power supply (you can check on the 4 pin connector, the 8 pin one, places like that). See if it's 12v or less. As a point of reference, my stock A6 will run at about 70-80% of speed when the voltage rail is down to 11.5v.

C

Hi, I tested the voltage and received a rating of about 10.9V, any idea why its so low?

[VRobb]

Your power supplies are too low wattage for your miner.  They're rated 700W, but that's the total output for all voltage rails.  We only use the +12 for mining, and you only get 54A which is only 648W.
You really need to over specify your psu when using atx type supplies.  They'll last longer and be in the sweet spot efficiency wise when you do, you'll undervolt your miner and get exactly what your getting now if you dont.
I know Canaan says 1150W for the 741, it's certainly drawing more than that given your symptoms.  That, or you got a bum psu. 

[edrich]

So it looks like my problem might be resolved,
It seems that the power Suplies only give 640w on the 12V rail thus giving 1280w (640x2)
And apparently that is not enough to power the miner as it uses 1150W, +0% ~ +15% and 1150+15%=1322.5w.
The guy I bought the miners from said that he will send me other PSU's that deliver at least 1400w on the 12V rail.
Thanks for all your help

[edrich]

I deceided to split the 0.01 BTC reward and gave some Bitcoin Cents to those of you that helped me
38a63cc2a6e8acd993f36d3776f1434c471c1fbf78e7fbc9f42e6eb613206225
c65c84ed2d146d6e484fa182e8565d39f6641ed24e074bbf239cbb30b022ff3e
faba83ad611cf17ceb2d719cae4467f101a847aebd00b5f17ec598c29e6323bb