Avalon A7 announced

[Steamtyme]

The 16 is an error code, it is just a warning and I don't think there is anything you can do about it. I had it on a machine and after a shutdown for a while it went away on startup.

Here is the link.
https://github.com/Canaan-Creative/avalon7-docs/wiki/AvalonMiner-error-code

[jimmy_007vn]

Is it normal that Avalon 741 restart more often? Mine Avalon restart even when it's at 37 degree Celsius. Thanks
https://drive.google.com/open?id=1X2giHh53t9MwcLljkS2hutdkEeBdH4tG

ReUp for answers

Mine have never restarted automatically, but I’ve not seen them get over 34... usually run 29-31.

Is there anyway we could the miner log to see what the problem caused it restarted. Mine restarted at -2 voltage in every 30 mins average

If you could screenshot the miner Log or copy and paste it to this thread, everyone can have a look at it, and perhaps see your problem

Please take a look and help me out. Thanks all
https://drive.google.com/file/d/1A60Rp9_DdZcUy5slzB7qYso5dEKBunAE/view?usp=sharing
https://drive.google.com/open?id=1hvpYMmcziMPUOIgMC23PK3m7FqZi7CWG

Having compared yours with mine, the only big difference I noticed is that your's ECHU is [16 0 0 0] where mine is [0 0 0 0]. Tried searching what that means, but couldn't find anything, maybe some other member can clarify. Also have you tried running it with a voltage offset of 0? Just curious what it would give then.

I ran it at -2. If i set it at 0, it will restart after 5-10 mins

[jbillk]

It is stable, averaging 8th per unit. This power supply was recommended by the distributor...

specs on cannon website
"≈ 1150W, +0% ~ +15% (with 93% PSU efficiency @ 25 C)"

so 1322W max at 93% efficiency. My PSU is only 90% efficient. But still a little high. May try switching to 240V with this: https://www.newegg.com/Product/Product.aspx?Item=N82E16812120346

When sizing a power supply that is going to be running 24/7, you would be well served to use a power supply that is only supplying 80% of it's rated capacity. The only exception to that rule might be when you are using datacenter grade power supplies (think HP, Dell, IBM, Delta, etc.), and even then I'd be wary running those at more than 90% of rated capacity. If you are using consumer grade power supplies (think Corsair, EVGA, Rosewill, etc.) 80% is a good target level.

Also, the percent efficiency stated by power supply manufacturers is how good their unit is converting the input power to output power. If you have a 90% efficient power supply that means that if 100 Watts comes into the PSU, then ~90 Watts comes out. The conversion efficiency of any given power supply may vary with input voltage. Consult the data sheet for your power supply for more information.

Running any power supply at 100% or more of it's rated power is asking for trouble. And trouble in this case could be damaged equipment or in the worst case, fires from overworked/overloaded PSUs, connectors, and cables.

The evga psu is rated for 1300w at the 12v rail, not the wall. The Avalon wattage at 12v load is calculated at 1069w to 1229W . So it has plenty of capacity for the 741. A couple other reasons why i think this supply  is ideal for this miner.

These PSUs are rated for 1300W continuous not peak...
They are very available, can return or buy a new one at local computer store in one hour.
Manufacturer has 10 year warranty, they will send me a new one if it craps out.
Better re-sale value, as it can be used for computer towers.
Has high end components, with various internal protections.

Just out of curiosity i ran one supply at 240V. Saved 70 watts, and the PSU is running about 8 dec C cooler when compared to 120v.

240v psu is circled

[ZedZedNova]

Is it normal that Avalon 741 restart more often? Mine Avalon restart even when it's at 37 degree Celsius. Thanks
https://drive.google.com/open?id=1X2giHh53t9MwcLljkS2hutdkEeBdH4tG

ReUp for answers

Mine have never restarted automatically, but I’ve not seen them get over 34... usually run 29-31.

Is there anyway we could the miner log to see what the problem caused it restarted. Mine restarted at -2 voltage in every 30 mins average

If you could screenshot the miner Log or copy and paste it to this thread, everyone can have a look at it, and perhaps see your problem

Please take a look and help me out. Thanks all
https://drive.google.com/file/d/1A60Rp9_DdZcUy5slzB7qYso5dEKBunAE/view?usp=sharing
https://drive.google.com/open?id=1hvpYMmcziMPUOIgMC23PK3m7FqZi7CWG

Having compared yours with mine, the only big difference I noticed is that your's ECHU is [16 0 0 0] where mine is [0 0 0 0]. Tried searching what that means, but couldn't find anything, maybe some other member can clarify. Also have you tried running it with a voltage offset of 0? Just curious what it would give then.

I ran it at -2. If i set it at 0, it will restart after 5-10 mins

That really sounds like a power issue to me. Check your PSU(s) and all the cables. Make sure that there are no loose connections.

[philipma1957]

[quote author link=topic=1673843.msg25249745#msg25249745 date=1511702853]

If someone you knew had six 741’s, power supplies for each and the controllers basically a plug in and go setup how much BTC would be a fair trade for them if the deal was done tomorrow?

I know they can be bought new with PSU for around 1k each but it will be months before you get them.

I'd consider paying about 8k for it, off course it also depends on your electricity price, as a higher price would mean you need to pay less for the same hardware to break even
[/quote]


6 units = 48-50th

so  if you got it in 2 days  you would have about 10 days at this  diff or around 0.09334 btc back  in the first 10 days.

if you paid 1 btc    in theory  100 days could or may  earn 0.9334 btc

power used is  8000 watts  or 8 x 24 = 196 kwatts a day  or 6000 kwatts a month  at 10 cents = 600 bucks  about 20  a day so 100 days = 2000 for power

if you mine 2000 days  and diff moves up with price holding you would have 1.38 btc in 200 days  or 1.38 - 4000 for power  if you had 10 cent power

so  1.38 x 9600 = 13,248- 4000 = 9248   after 200 days or break even and gear in hand.

That to me is the best it would do.  so if you had 10 cent power I would say it is okay buy not great.

drop power cost to  8 cents  and  the deal looks better.

raise power cost to 12 cents and the deal is so so .


snap guess.   if this was  s-9's  they use less power but break more

 I would take 5 s-9's  because I will get breakage.

So my guess is 1 btc is max price for 6  that making some money could happen.

I would want to pay less  if the deal was offered to me  say 0.8 btc or 7500 usd whatever is less

[jimmy_007vn]

sigh... too much headache with this miner. My vega rig runs steady and quite. This Avalon keep resetting every 2 hours.

[Elphamyto]

Is it normal that Avalon 741 restart more often? Mine Avalon restart even when it's at 37 degree Celsius. Thanks
https://drive.google.com/open?id=1X2giHh53t9MwcLljkS2hutdkEeBdH4tG

ReUp for answers

Mine have never restarted automatically, but I’ve not seen them get over 34... usually run 29-31.

Is there anyway we could the miner log to see what the problem caused it restarted. Mine restarted at -2 voltage in every 30 mins average

If you could screenshot the miner Log or copy and paste it to this thread, everyone can have a look at it, and perhaps see your problem

Please take a look and help me out. Thanks all
https://drive.google.com/file/d/1A60Rp9_DdZcUy5slzB7qYso5dEKBunAE/view?usp=sharing
https://drive.google.com/open?id=1hvpYMmcziMPUOIgMC23PK3m7FqZi7CWG

Having compared yours with mine, the only big difference I noticed is that your's ECHU is [16 0 0 0] where mine is [0 0 0 0]. Tried searching what that means, but couldn't find anything, maybe some other member can clarify. Also have you tried running it with a voltage offset of 0? Just curious what it would give then.

I ran it at -2. If i set it at 0, it will restart after 5-10 mins

Look at the System Log tab, that might provide some clues. See what's happening around the time the hashrate is dropping to zero. Maybe there is something happening with dhcpd, etc.

[TracerX]

Is it normal that Avalon 741 restart more often? Mine Avalon restart even when it's at 37 degree Celsius. Thanks
https://drive.google.com/open?id=1X2giHh53t9MwcLljkS2hutdkEeBdH4tG

ReUp for answers

Mine have never restarted automatically, but I’ve not seen them get over 34... usually run 29-31.

Is there anyway we could the miner log to see what the problem caused it restarted. Mine restarted at -2 voltage in every 30 mins average

If you could screenshot the miner Log or copy and paste it to this thread, everyone can have a look at it, and perhaps see your problem

Please take a look and help me out. Thanks all
https://drive.google.com/file/d/1A60Rp9_DdZcUy5slzB7qYso5dEKBunAE/view?usp=sharing
https://drive.google.com/open?id=1hvpYMmcziMPUOIgMC23PK3m7FqZi7CWG

Having compared yours with mine, the only big difference I noticed is that your's ECHU is [16 0 0 0] where mine is [0 0 0 0]. Tried searching what that means, but couldn't find anything, maybe some other member can clarify. Also have you tried running it with a voltage offset of 0? Just curious what it would give then.

I ran it at -2. If i set it at 0, it will restart after 5-10 mins

Look at the System Log tab, that might provide some clues. See what's happening around the time the hashrate is dropping to zero. Maybe there is something happening with dhcpd, etc.

The 741 has a watchdog running that will reboot the system ~5 minutes if it hasn't sent work or if the ASIC stops responding or if the cgminer API isn't accessible to the local host.  If the machine reboots on voltage of 0, it's likely that the ASIC is dropping a board (or a row of chips) prompting the watchdog to reboot.  Swap your PSU and see if that helps.

That said, have you made any changes to the API addresses in the cgminer config tab?  That one drove me crazy for a day...  127.0.0.1 must have access to the API, default is "W:", but I'm not sure if it needs write access.

Good luck!

[rs1x]

I'm still not having much luck.

Routes Page:
https://i.imgur.com/c638XiL.png

Can someone confirm that looks like it's close to working.  

I have assigned the RaspPi a static IP address - and that seems to be working okay.  Can't seem to get the Avalon to show in the miner.


Log:
https://i.imgur.com/fShuufX.png

Status Page:
https://i.imgur.com/DSEBdEK.png


I feel like I have to be damn close.

Edit:
This is from system log.  These errors don't look good
https://i.imgur.com/5R9TdUi.png

It's the AUC3, they didn't flash it when they shipped the miner. Contact them for exchange

YOU WERE RIGHT.  I purchased a AUC3 from MINERWAREZ , as soon as i plugged it in, everything started to work as expected.

As someone just mentioned, what a darn headache it was.  I was doing so much troubleshooting only to find out the manufacturer sent me a bad AUC3 device.  Pretty frustrating. 

Have to thank everyone in this thread who tried their best to help.  I will try and hang out here to return the favor now, I have a decent grasp on them.

[jimmy_007vn]

Is it normal that Avalon 741 restart more often? Mine Avalon restart even when it's at 37 degree Celsius. Thanks
https://drive.google.com/open?id=1X2giHh53t9MwcLljkS2hutdkEeBdH4tG

ReUp for answers

Mine have never restarted automatically, but I’ve not seen them get over 34... usually run 29-31.

Is there anyway we could the miner log to see what the problem caused it restarted. Mine restarted at -2 voltage in every 30 mins average

If you could screenshot the miner Log or copy and paste it to this thread, everyone can have a look at it, and perhaps see your problem

Please take a look and help me out. Thanks all
https://drive.google.com/file/d/1A60Rp9_DdZcUy5slzB7qYso5dEKBunAE/view?usp=sharing
https://drive.google.com/open?id=1hvpYMmcziMPUOIgMC23PK3m7FqZi7CWG

Having compared yours with mine, the only big difference I noticed is that your's ECHU is [16 0 0 0] where mine is [0 0 0 0]. Tried searching what that means, but couldn't find anything, maybe some other member can clarify. Also have you tried running it with a voltage offset of 0? Just curious what it would give then.

I ran it at -2. If i set it at 0, it will restart after 5-10 mins

Look at the System Log tab, that might provide some clues. See what's happening around the time the hashrate is dropping to zero. Maybe there is something happening with dhcpd, etc.

The 741 has a watchdog running that will reboot the system ~5 minutes if it hasn't sent work or if the ASIC stops responding or if the cgminer API isn't accessible to the local host.  If the machine reboots on voltage of 0, it's likely that the ASIC is dropping a board (or a row of chips) prompting the watchdog to reboot.  Swap your PSU and see if that helps.

That said, have you made any changes to the API addresses in the cgminer config tab?  That one drove me crazy for a day...  127.0.0.1 must have access to the API, default is "W:", but I'm not sure if it needs write access.

Good luck!

I returned the 2x750W Corsair for 2x750W G2 EVGA. it was stable for 12 hours at -2. the longest running since i got the miner. The moment i switched to 0. it ran for an hours, then restart. Im trying -1 now. will see what happen

[edrich]

Is it normal that Avalon 741 restart more often? Mine Avalon restart even when it's at 37 degree Celsius. Thanks
https://drive.google.com/open?id=1X2giHh53t9MwcLljkS2hutdkEeBdH4tG

ReUp for answers

Mine have never restarted automatically, but I’ve not seen them get over 34... usually run 29-31.

Is there anyway we could the miner log to see what the problem caused it restarted. Mine restarted at -2 voltage in every 30 mins average

If you could screenshot the miner Log or copy and paste it to this thread, everyone can have a look at it, and perhaps see your problem

Please take a look and help me out. Thanks all
https://drive.google.com/file/d/1A60Rp9_DdZcUy5slzB7qYso5dEKBunAE/view?usp=sharing
https://drive.google.com/open?id=1hvpYMmcziMPUOIgMC23PK3m7FqZi7CWG

Having compared yours with mine, the only big difference I noticed is that your's ECHU is [16 0 0 0] where mine is [0 0 0 0]. Tried searching what that means, but couldn't find anything, maybe some other member can clarify. Also have you tried running it with a voltage offset of 0? Just curious what it would give then.

I ran it at -2. If i set it at 0, it will restart after 5-10 mins

Look at the System Log tab, that might provide some clues. See what's happening around the time the hashrate is dropping to zero. Maybe there is something happening with dhcpd, etc.

The 741 has a watchdog running that will reboot the system ~5 minutes if it hasn't sent work or if the ASIC stops responding or if the cgminer API isn't accessible to the local host.  If the machine reboots on voltage of 0, it's likely that the ASIC is dropping a board (or a row of chips) prompting the watchdog to reboot.  Swap your PSU and see if that helps.

That said, have you made any changes to the API addresses in the cgminer config tab?  That one drove me crazy for a day...  127.0.0.1 must have access to the API, default is "W:", but I'm not sure if it needs write access.

Good luck!

I returned the 2x750W Corsair for 2x750W G2 EVGA. it was stable for 12 hours at -2. the longest running since i got the miner. The moment i switched to 0. it ran for an hours, then restart. Im trying -1 now. will see what happen

I had one of mine running with 2x750W Corsair power supplies, and they weren't giving enough power on the 12V rail,which led to them running at less than 7TH and rebooting every few hours. However, after I changed it to 850W PSU's they are now happily running at about 7.2TH. Could you perhaps check what is the wattage on the 12V rail?
Now not sure if you have the same Corsair Power Suplies, but that could be your problem, could you perhaps check what is

[jimmy_007vn]

I used this onehttps://www.bestbuy.com/site/corsair-cx-series-modular-cx750m-750w-atx-power-supply-black/8324202.p?skuId=8324202&ref=212&loc=1&ksid=1d111f93-75e9-45d5-957c-286aa38ccf41&ksprof_id=8&ksaffcode=pg199078&ksdevice=m&lsft=ref:212,loc:2

I thought Avalon only require 1300 W total. I changed to 2x750 EVGA G2. It’s getting better now at -2 and -1. How do you check the wattage of the 12V connection?

[edrich]

I used this onehttps://www.bestbuy.com/site/corsair-cx-series-modular-cx750m-750w-atx-power-supply-black/8324202.p?skuId=8324202&ref=212&loc=1&ksid=1d111f93-75e9-45d5-957c-286aa38ccf41&ksprof_id=8&ksaffcode=pg199078&ksdevice=m&lsft=ref:212,loc:2

I thought Avalon only require 1300 W total. I changed to 2x750 EVGA G2. It’s getting better now at -2 and -1. How do you check the wattage of the 12V connection?

There should be a sticker on the Power Supply saying which wattage each rail gets.

[jimmy_007vn]

I used this onehttps://www.bestbuy.com/site/corsair-cx-series-modular-cx750m-750w-atx-power-supply-black/8324202.p?skuId=8324202&ref=212&loc=1&ksid=1d111f93-75e9-45d5-957c-286aa38ccf41&ksprof_id=8&ksaffcode=pg199078&ksdevice=m&lsft=ref:212,loc:2

I thought Avalon only require 1300 W total. I changed to 2x750 EVGA G2. It’s getting better now at -2 and -1. How do you check the wattage of the 12V connection?

There should be a sticker on the Power Supply saying which wattage each rail gets.

What power supply do you use ?

[goose1072]

I am using six of these two on each miner http://www.ebay.com/itm/hp-512327-B21-511778-001-750W-cs-hot-plug-power-supply-g6-g7-506821-/121586023981?epid=1542955798&hash=item1c4f177e2d:g:avwAAOSwax5Yrfcy

I use these beakout boards http://www.ebay.com/itm/DPS-1200FB-QB-6-Pin-A-Power-Supply-Breakout-Board-Adapter-For-Ethereum-Mining-/202014264431?hash=item2f08fd0c6f:g:XokAAOSwRIRZiaaT

and used these plugs from parallelminer, they make the best cables/plugs http://www.parallelminer.com/product/24-inch-16awg-6-pin-male-to-6-pin-male-pcie-power-cable/

I had made best offers for both of the ebay ones on top and got them for a little cheaper, I also ordered two extra PSU's since they where cheap enough.

I have been running my miners for about 4 months and no issues, the PSU's are warm to the touch and voltage offset to 0.

I found this being the cheapest way to power the Avalon miner for me at 120v.

[goose1072]

Here is my set up:



I use 2 different power distribution boards on my PSU's:





I use two 750 watt psu's per miner with no issues:

This is what it looks like.

[mdude77]

Can the 741s be safely overclocked with the +1 voltage setting in cgminer?

Assuming there is sufficient cooling, which there is this time of year...

M

[philipma1957]

Can the 741s be safely overclocked with the +1 voltage setting in cgminer?

Assuming there is sufficient cooling, which there is this time of year...

M

don't bother  no seems to be able to do so and get better numbers then the 0 setting.


there are some with 20 or 30 units maybe they did get some good +1 miners

[mdude77]

Can the 741s be safely overclocked with the +1 voltage setting in cgminer?

Assuming there is sufficient cooling, which there is this time of year...

M

don't bother  no seems to be able to do so and get better numbers then the 0 setting.


there are some with 20 or 30 units maybe they did get some good +1 miners

Okay.  Well, I've never run at 0.  Only -2.

I switched all mine to +1 about an hour ago and they are all running at 1 TH/s more than before.  Seriously, all are at 8.3 or 8.4.

You're saying 0 does the same?

M

[ConnerM]

Can the 741s be safely overclocked with the +1 voltage setting in cgminer?
Assuming there is sufficient cooling, which there is this time of year...

I've been running our bank of ( 741's at +1 since the end of Sept, no trouble. There is an additional power draw. At +1 the 8 units together draw an additional 3amps between the two 208v circuits they are on. Ambient intake here is below 60 degrees F, so PCB temps are good. The result of 0 vs. +1 across the whole array is around and average of about 60THs at '0' vs. about 62ish for +1.