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1  Bitcoin / Hardware / Re: 7nm Avalon ASIC (A3207) AvalonMiner A9 0.06-0.07 J/GH on: September 14, 2018, 05:00:51 PM
I'm hoping for November, and that the US/China tradewar is over by then.  Otherwise some of us are going to see prices 25% higher than others.
2  Bitcoin / Pools / Re: Best pool rules on: September 12, 2018, 03:39:22 AM
Frequency of payment to miners is also a consideration, while selecting a pool

Not really, since it all works out the same over time.  However you want a pool big enough that you at least get paid weekly.
3  Bitcoin / Mining speculation / Re: My Plan on: September 10, 2018, 05:54:51 PM
Pipe dream...with no chance

Not really.  I have a friend in Kentucky who is also thinking about do this.  They lease the oil rights on their property and get natural gas as a free by-product.  Not an unlimited amount of course, but easily enough to power a 10-15KW generator.

They are thinking of spending the $2K other neighbors have spent to put in a generator to power their horse farm.
4  Bitcoin / Mining speculation / Re: Cheap electricity available, need advice on: August 26, 2018, 06:11:50 PM
When to buy belongs in the speculation thread, nobody knows and bitmain isn't telling.  Best you can do is guesstimate when it will be the most profitable for them to do so.

Cheap power is great - that is about 1/3rd of my cost.  Questions to ask your power company:  How much can you get at that rate.  Large farms use a LOT of power.

Consider the cost of putting up your building, and the wiring cost, which is not trivial.

Are their any zoning concerns due to the noise this building will generate?  Security concerns?

Unlikely anyone would pay you $0.05/kwh to host their machines.  That is $54/month/S9 which is not insignificant.  It is equal to paying $0.079/kwh which is NOT considered cheap power.
5  Bitcoin / Mining speculation / Re: Is ALL mining in China heading towards doom? on: August 24, 2018, 06:10:34 PM
Suspect they want to isolate their country and play it safe - not have crypto possible interfere with their manic currency controls.

However they are perfectly fine with Bitmain and Canaan selling miners to people overseas and bringing cash into the country.
6  Alternate cryptocurrencies / Mining (Altcoins) / Re: (2) of (6) TI 1070s just slowed dow on: August 23, 2018, 09:05:13 PM

Ethos.  Multiple power cycles and reboots prior to posting.
Did you tried to increase the cclock and mclock a little bit just try but still monitor the power draw.
It looks like someone taking your 10% hashrate or it might be other reasons why the hashrate drop by 10%.
Like what will happen to rx400 and rx 500 series.

Quote
Etherum mining hashrate of these series cards will drop by 30% in next couple of months due to DAG Epoch. 4GB cards will be greatly affected by Etherum DAG Epoch. For mining few GB of resource DATA is needed which sould be stored in GPU cache. DAG file size has increased overtime thus lowering the mining hasrate. Amount of block mined is called DAG Epoch. Each time we move to next Epoch DAG file become larger.

Fortunately doing zcash, not Etherum (not a big believer in Etherum in part for the reasons you mentioned).

I did try upgrading to EthOS 1.3.2 just in case there were security issues, but the box is firewalled off with no DNAT access to it - so unlikely its been hacked unless EthOS has been.

Hmmm.  Netstat is showing 2 ESTABLISHED connections, one to my pool, the other to 188.165.195.21:3443, which I'm hoping is the Ethos stat collection site, presuming they have one.

Odd that its only slowing down GPU #2 and GPU #4 (all the cards are EVGA Hybrid's - so water cooled - e.g. no fan issues to worry about (verified by the reported temps)

Just verified:  all cores are running at +200, mem at +700, pwr at 130 - last time I changed any of that was back in May per the configuration file datestamp.
7  Alternate cryptocurrencies / Mining (Altcoins) / Re: (2) of (6) TI 1070s just slowed dow on: August 23, 2018, 07:00:40 PM
Are you using windows 10 and did you update it lately? this is sometimes happening to me if there is software updating that running on the background without notification it might be the cause of the hashrate drop.

Did you try to reboot the rig? try to reboot it may solve your issue.

Ethos.  Multiple power cycles and reboots prior to posting.
8  Alternate cryptocurrencies / Mining (Altcoins) / Re: (2) of (6) TI 1070s just slowed dow on: August 23, 2018, 07:00:06 PM
Was there anything that happened just before? Any software update of any kind?

No... last time I updated Ethos or the mining software was over a month ago.
9  Alternate cryptocurrencies / Mining (Altcoins) / (2) of (6) TI 1070s just slowed dow on: August 23, 2018, 05:53:08 PM
I have a GPU rig that has been running for close to a year now.  Today, (2) of the (6) TI 1070s took a major plunge in effectiveness, dropping from ~500 sols/s to ~300 sols/s.  The other GPUs continue as before:

Code:
   GPU0  50C  85% |  504.3 Sol/s   508.8 Avg   272.7 I/s | 3.92 S/W  131 W |  2.56  100  124
   GPU1  48C  85% |  514.9 Sol/s   506.6 Avg   271.9 I/s | 3.91 S/W  128 W |  2.46  100  135
   GPU2  48C  85% |  339.1 Sol/s   339.4 Avg   176.7 I/s | 2.70 S/W  126 W |  2.25  100  126 +
   GPU3  50C  85% |  502.1 Sol/s   498.9 Avg   267.3 I/s | 3.85 S/W  133 W |  2.26  100  125 ++
   GPU4  49C  85% |  321.1 Sol/s   336.0 Avg   176.0 I/s | 2.72 S/W  119 W |  1.77  100  127
   GPU5  53C  85% |  489.9 Sol/s   490.5 Avg   265.6 I/s | 3.78 S/W  132 W |  3.19  100  131 +
   ============== | 2671.3 Sol/s  2680.2 Avg  1430.2 I/s | 3.48 S/W  771 W | 14.50  100  128

Note GPUs 2 and 4 in the above screenshot.  This represents about a 10% loss in mining efficiency for me.

Any suggestions on how to recover?
10  Bitcoin / Pools / Re: [~200PH] KanoPool kano.is 0.9% fee 6.3 BTC giveaway 🐈 US,UK,JP,NYA,DE,SG on: August 23, 2018, 05:40:56 PM
^^
I opened the email and assumed it was some sort if phishing attempt  glad I already made my mind up to never order from them.

Considering how often there database gets hacked I'd hate to have valuable information about myself there.

Right? No more Bitmain for me...

Swore off of them after I burned the last of my $200 coupons on now worthless L3s (with the coupons, they were very cheap).  Actually losing a few cents a day mining with those now.

In related news, did everyone catch that China is going to IP block another 100+ exchanges from their citizens?  They already banned exchanges within their country, so this will be the Poloniex's of the world going away for them.  Bitcoin must be worth something if they are so afraid of it, but that is sure not going to help the current recovery.
11  Bitcoin / Pools / Re: [~200PH] KanoPool kano.is 0.9% fee 6.3 BTC giveaway 🐈 US,UK,JP,NYA,DE,SG on: August 22, 2018, 07:31:55 PM
Who knows...maybe I'll "find a block".

Definitely a possibility, although not a probability.  Even free S3s burn more power than you can earn running them unless your power is incredibly cheap as well (I haven't run the number, but guessing something like 2 cents /kw would do it.)

S3s are good for working out the kinks like your doing.  But as soon as those are stabilized, you really need to move up S9s or 841s to make anything at all.  Or wait for the A9s due in a few months.
12  Bitcoin / Pools / Re: [~200PH] KanoPool kano.is 0.9% fee 6.3 BTC giveaway 🐈 US,UK,JP,NYA,DE,SG on: August 22, 2018, 04:15:24 AM
40F should be fine for the miner, but the power supplies might give you some problems if you have a power outage and they cool off.  About a third of my APW3++ power supplies won't start if they are below about 50F.  On the other end, about 10% start up fine at -10F.  Rest are in-between.  Fortunately I can use those few to generate enough heat to warm up the rest.
I had not thought about the power supplies!  I guess there is always a hair dryer to kick start them if there are troubles!  Thanks much!
Hmm. Maybe set a heater to keep it 50 in there. Unless there's an outage, it'll never run.

That is basically what I do in the winter:  I have a thermostatically controlled gable fan that kicks on if the cold aisle is below 50F.  It sucks air out of one of my hot aisles and recirculates it.  Given the 10% that come on during our coldest outages, its enough to get things bootstraped.  Still a lot of manual intervention though.  Those PSUs that don't start need to be power cycled to kick in.
13  Bitcoin / Pools / Re: [~200PH] KanoPool kano.is 0.9% fee 6.3 BTC giveaway 🐈 US,UK,JP,NYA,DE,SG on: August 21, 2018, 05:07:02 PM
I am curious if anyone knows what the minimum temperature should be during the winter to keep S9 miners working well?  Is 40F too low?  I ran two last winter at 50F and they seemed to run ok...

40F should be fine for the miner, but the power supplies might give you some problems if you have a power outage and they cool off.  About a third of my APW3++ power supplies won't start if they are below about 50F.  On the other end, about 10% start up fine at -10F.  Rest are in-between.  Fortunately I can use those few to generate enough heat to warm up the rest.
14  Bitcoin / Mining software (miners) / Re: BFGMiner 5.5.0: CPU/GPU/FPGA/ASIC mining software, GBT+Stratum, RPC, Linux/Win64 on: August 19, 2018, 10:44:42 AM
I keep playing with bfgminer 5.5.0 and my antminers, but it does not appear to be stable.  After 10-15 minutes I get a segmentation fault.

Tried 5.4.2 & 5.5.0 via gentoo distribution, and a hand compiled 5.5.0.  All behave the same.

Any suggestions?
Run it in gdb and/or valgrind and report a backtrace.

Will do.  Building GDB now.

Got pulled away from the coin I was working with.  Sorry.

I am trying a new coin and have a new error:

Code:
[2018-08-19 05:47:33] /usr/bin/bfgminer: --coinbase-addr: Invalid address

Invoked using: /usr/bin/bfgminer -S antminer:all -o $POOL -u $WORKER -p $PASS $OPT --coinbase-addr=rM4Z7VR2YjjDs9iC4GcLtwtnwtyW1Lqx7Y

A "getaccountaddress" from the new coin's linux wallet is reporting that address, so I would think it is valid...

Any thoughts?
15  Alternate cryptocurrencies / Mining (Altcoins) / Re: [Awesome Miner] - Powerful Windows GUI to manage and monitor up to 10000 miners on: August 09, 2018, 05:50:16 PM
I'd also be fine with burning extra licenses.  This is in-line with what we discussed several months ago.

Cheers!
16  Bitcoin / Hardware / Re: 7nm Avalon ASIC (A3207) AvalonMiner A9 0.06-0.07 J/GH on: August 07, 2018, 04:31:37 PM
You can get Canaan's products through one of their distributors, like the U.S. based Blokforge, with no MOQ.
I've ordered through them for all my Avalon equipment, and highly recommend them. Great service and
support.

https://blokforge.com/shop/

I 2nd this endorsement.

If you're over in Europe. cryptouniverse is your distributor of choice.
17  Bitcoin / Pools / Re: [4+ EH] Slush Pool (slushpool.com); Overt AsicBoost; World First Mining Pool on: August 02, 2018, 09:42:13 PM
I'd watch the pool hash rate around block find. You'll get your answer there.

Minefarmbuy thank you for your answer. I have read the FAQ about the hash rate and the reward systems. Based on the hash rate block they gave me my rewards. However the thing I can not get an answer is how they calculate Daily Rewards, so I can understand why is such a difference. Pitty I had to change pool and they had a very good monitoring application for iOS.

This is still a PPLNS pool, so your daily reward is based on the number of blocks confirmed (found 100 blocks before) in the previous 24 hours.  That will vary day to day.
18  Bitcoin / Mining support / Re: New S9i whats going on here (blinking light on PSU) on: August 01, 2018, 04:58:40 AM
https://youtu.be/XllSw4WAcq4

1500W PSU on 110v. The guy at parallel miner said this can put out 1500w on 110.

Looks like a power overload to me.  You sure you have them hooked up right to the S9i?  e.g. only one power supply per hash board?
19  Bitcoin / Mining speculation / Re: Trying to Start Mining in College on: August 01, 2018, 02:28:32 AM
And your missing the point on APW3++s: at 1450Watts, you would be pulling 13.2 amps at 110V on wiring system rated for a continuous load of 12 amps (80% of a 15 amp breaker).  And that is before the inefficiency of the step-up-transformer is factored in.

I'll also second the suggestion for an 841 or even a cheaper 821 (slower, but less power as well).  My 821s do about 11.5 TH/sec.

Of course, NOTHING else can be running on whatever circuit your putting these on or you will be popping breakers.
20  Bitcoin / Hardware / Re: 7nm Avalon ASIC (A3207) AvalonMiner A9 0.06-0.07 J/GH on: August 01, 2018, 02:18:00 AM
Interesting to note that 1720 watts is right up against the power limit for running (2) on a 220V 20amp circuit continuouosly. 

20 amps /2 = 10 amps * 80% max = 8 amps * 220V = 1760Watts.

Nice design point!
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