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Topic: Avalon ASIC users thread - page 84. (Read 438722 times)

newbie
Activity: 31
Merit: 0
September 01, 2013, 12:57:57 PM
http://i.imgur.com/OlJOgGe.jpg?1


I want to ask which kind of resistor is missing here on the second chip from right?
I've been looking around,but can't finded what is the corect name and parameters of that one.

According to the docs: https://github.com/BitSyncom/avalon-ref/blob/master/PDF/SCH/hash_chip.pdf?raw=true

That is a 60 Ohm @ 100MHz Magnetic Ferrite Chip Bead
newbie
Activity: 43
Merit: 0
September 01, 2013, 11:36:22 AM
Hello all. After some Internet downtime(damn ISPs) and a swift relocation of my batch 3 3module avalon. I have a hard time getting uptime. The ethernet connection is unbelivably slow and disconnects and connects all the time. It took me 2hours to connect it to the WIFI. It was up to about 68gh/s for one hour, and then died. Now im having a hard time acsessing the web interface. Anybody got any idea whats causing this slow/briken connection on the ethernet between my avalon and my ubuntu laptop? thanks.
newbie
Activity: 41
Merit: 0
September 01, 2013, 07:19:33 AM
http://i.imgur.com/OlJOgGe.jpg?1


I want to ask which kind of resistor is missing here on the second chip from right?
I've been looking around,but can't finded what is the corect name and parameters of that one.
member
Activity: 91
Merit: 10
September 01, 2013, 03:18:53 AM
I just had an avalon that was running fine for weeks suddenly stop working Sad

Red/yellow lights are on. The miner starts but it never does any work (hashrate is 0)

Where should I start looking for the problem?

I had one do something similar. It turned out to be a bad USB cable connection inside of the case. The cable that runs from the built-in router to the front of the case makes poor contact with the hub where all of the power and data cables connect. Try pushing the cable to the right or left of the socket. My theory is the vibration of the fans eventually wiggled the cable enough to get it to disconnect. Good luck!
legendary
Activity: 966
Merit: 1000
August 31, 2013, 09:07:24 PM
I just had an avalon that was running fine for weeks suddenly stop working Sad

Red/yellow lights are on. The miner starts but it never does any work (hashrate is 0)

Where should I start looking for the problem?

Start with the power supply.
legendary
Activity: 966
Merit: 1000
August 31, 2013, 09:06:46 PM
A huge bright spark came from inside my avalon twice.

Definitely not good.  What do your match_work_count numbers in Cgminer API Log look like now after a few hours of runtime?  Are they equal or disproportionate?
newbie
Activity: 24
Merit: 0
August 31, 2013, 08:56:52 PM
I just had an avalon that was running fine for weeks suddenly stop working Sad

Red/yellow lights are on. The miner starts but it never does any work (hashrate is 0)

Where should I start looking for the problem?
legendary
Activity: 1112
Merit: 1000
August 31, 2013, 02:46:07 PM
Quote
I noticed the HW rate is higher than the "Accepted" shares.
Accepted is a useless statistic here; look at DiffA.

Error % = HW * 100.0 / (DiffA + HW)

Actually it's easy these days, install the 20130821 firmware from Con and have a look at the Device Hardware% line in Status -> Cgminer API Log:

hero member
Activity: 560
Merit: 517
August 31, 2013, 02:16:49 PM
Quote
I noticed the HW rate is higher than the "Accepted" shares.
Accepted is a useless statistic here; look at DiffA.

Error % = HW * 100.0 / (DiffA + HW)
newbie
Activity: 50
Merit: 0
August 31, 2013, 06:26:29 AM
Any thoughts on why any particular unit might be making a clicking sound occasionally? Can't isolate where the sound is from.. no weird operation.. running better than ever.. thoguhts? Potential PSU problem? ETc..

Check your fans. What else could make clicking sound? That is the only moving part of the box.
sr. member
Activity: 364
Merit: 250
August 30, 2013, 03:34:23 AM
Any thoughts on why any particular unit might be making a clicking sound occasionally? Can't isolate where the sound is from.. no weird operation.. running better than ever.. thoguhts? Potential PSU problem? ETc..
legendary
Activity: 1600
Merit: 1014
August 30, 2013, 03:33:20 AM
What's the hashrate with the wire mod @400 or 460Mhz? I got a 1000W PSU on a 3 Module machine, how far will it get me?


@460Mhz  36Ghs per module.

~144GHs for a 4 module unit.   This consumes about 1700watt at the wall.

3 Modules should get you 108Ghs and you would need a 1200 watt supply at minimum.


Also the wire mod alone will not get you any where near 400mhz.  you need to hardware adjust your voltage up to at least 1.3 volts (im at 1.36v)  and you must do something about cooling!!!!!!

Cooling shouldn't be an issue, mine are already water cooled (see my sig).
However I have to calculate if the increase justifies soldering around on my Avalons - also I have to solder it back one day probably...
28 Ghash more is not little, but I need to buy new PSU's and after all I could just buy some ASICMINER blades for 10btc which will give me more hashrate at less power consumption.
legendary
Activity: 3080
Merit: 1083
August 30, 2013, 03:00:37 AM
I'm not sure if this has already been asked (if so please just ignore my post and my apologies in advance) but with 07-23-13 firmware (latest on the avalon wiki page) I noticed the HW rate is higher than the "Accepted" shares. For example with 4 day uptime I get HW=137438 Accepted=66266

This is with cgminer 3.3.1 which is the stock cgminer that comes with 07-23.

The miner seems to be hashing fine and as far as I can tell there is no degradation in performance at the pool level. So it must be something with the way cgminer 3.3.1 does things I suppose.

I should mention that I use the --avalon-auto flag and it hovers typically around the 340 to 350 MHz mark. Temp is never above 50C for Temp3, Temp2 is 50, Temp1 is 27.
legendary
Activity: 1379
Merit: 1003
nec sine labore
August 29, 2013, 01:26:20 PM
i just upgraded to cgminer 8/21/13 and now 2 of my 3 avalons have yellow flashing lights even though they appear to be hashing just fine.

anyone else notice this and what does it mean?

https://bitcointalksearch.org/topic/m.3004093

spiccioli
member
Activity: 113
Merit: 10
https://www.chynge.net/
August 29, 2013, 01:10:25 PM
What's the hashrate with the wire mod @400 or 460Mhz? I got a 1000W PSU on a 3 Module machine, how far will it get me?


@460Mhz  36Ghs per module.

~144GHs for a 4 module unit.   This consumes about 1700watt at the wall.

3 Modules should get you 108Ghs and you would need a 1200 watt supply at minimum.


Also the wire mod alone will not get you any where near 400mhz.  you need to hardware adjust your voltage up to at least 1.3 volts (im at 1.36v)  and you must do something about cooling!!!!!!
legendary
Activity: 1600
Merit: 1014
August 29, 2013, 12:53:49 PM
What's the hashrate with the wire mod @400 or 460Mhz? I got a 1000W PSU on a 3 Module machine, how far will it get me?
legendary
Activity: 1764
Merit: 1002
August 29, 2013, 12:53:31 PM
i just upgraded to cgminer 8/21/13 and now 2 of my 3 avalons have yellow flashing lights even though they appear to be hashing just fine.

anyone else notice this and what does it mean?

Don't worry about it. It's been mentioned before and said it has something to do with the changes in the timing code in the new firmware.  Mine are the same way and are mining a bit faster than with the 0703 firmware.

yes, it's definitely kicked up the HR. Cheesy
member
Activity: 69
Merit: 10
August 29, 2013, 12:37:43 PM
i just upgraded to cgminer 8/21/13 and now 2 of my 3 avalons have yellow flashing lights even though they appear to be hashing just fine.

anyone else notice this and what does it mean?

Don't worry about it. It's been mentioned before and said it has something to do with the changes in the timing code in the new firmware.  Mine are the same way and are mining a bit faster than with the 0703 firmware.
legendary
Activity: 1764
Merit: 1002
August 29, 2013, 12:35:46 PM
i just upgraded to cgminer 8/21/13 and now 2 of my 3 avalons have yellow flashing lights even though they appear to be hashing just fine.

anyone else notice this and what does it mean?
sr. member
Activity: 294
Merit: 250
August 29, 2013, 04:52:54 AM
question, im sure its been answered a thousand times, but the rejection rate, i see it a bit high now?
a:5929 r:434
but maybe it settles as ive read? running avalon-auto.

346 1800 2280 2400 21 46 46

i'll see in a while if it goes up to 350 as temp is ok, if it settles on a lower rate as previously shown in past of this thread.

4 hours in, and its still on 10% reject. That normal? on b2 3 unit, i now get 70avg instead of 80..
and its not hot, running 342mhz.
im setting --avalon-freq 340-355 to test..

works alot better with std freq 340, and avalon-freq 340-365.. 0.7% rejects.. temp 24 48 49.
Next il try std 350 and 350-375 or 380.
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