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Where do I find more details about Bithereum and the rules of the airdrop?
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Thanks jk_14!
16c738a74ff2471ee0abd94d73bbdfa191bfebb7b779b345dc6a297c35dcadf9
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Hi jk_14,
I'm trying to run KopiemTu with 2 GTX 1070 FE. Unfortunately every few minutes it switches algo and after few more minutes it restarts.
Also in web interface there is "2 GPUs not OK".
Also tried with only 1 GPU. Same behaviour.
I've tried to lower the power in /root/powerlimit.conf. Same behaviour.
I've noticed that /tmp/failover and /tmp/done files do appear.
Killing monitor seems to stop the algo switching and rebooting.
Any idea how to solve this?
Thanks,
Lastbit
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Lyra2REv2, linux, just compiled:
750 @1202MHz =~3350 (non Ti)
970 @1303MHz =~8530
980Ti = does not validate on CPU
Thanks,
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utc.tumblingblock.com:
~700 "Unconfirmed" coins since days
~80 attempted transfer (confirmed Debit_MP), but they aren't seen anywhere
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Payouts do not work for me
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You should use powered raisers. Currents draw for the video cards on 12V plane on mbd are way too high.
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Good list.
Bitfury is somewhat better than that though, I measured +116W for adding a 150GH/s Bitfury unit to my rig. Gold-rated 1300W PSU at 440W@230V total now so I'd assume about 90% efficiency. Anyway, <0.8J/GH at the wall for Bitfury. Another guy had similar results.
Was this on the reduced speed boards? The reason I ask is if the boards intended for 25 GH/s are getting 21 GH/s then they are essentially underclocked (even if unwillingly) and that will improve efficiency. Was the 116W increase at the wall? Thanks for the thread, D&T. BTW, as I'm sure you know, if voltage of the chips is constant, efficiency is roughly independent of frequency(hashrate). While there is a very slight increase of efficiency at lower hashrate, due to better efficiency of DC/DC and main PS, we are talking of single digit percentages only. Indeed if the voltage can be adjusted, and if you do this properly, efficiency is roughly inverse dependent with the square of frequency(hashrate). For a 10% increase in hashrate you pay a ~33% penalty in power consumption. On 4 modules Avalon, where voltage is fixed, I have ~8.4J/GH@256MHz degrading continuously to ~8.6J/GH@360MHz. I assume efficiency is a little higher at lower frequencies due to better efficiency at lower power of the DC-DC converters and main PS. On the other hand, on a 2x7970 rig, at the wall, including motherboard and HDD power consumption: 465 J/GH (2.15 MH/J) @ nominal voltages (1.175 and 1.112V) = 1300MH/s, 605W 322 J/GH (3.10 MH/J) @ undervolt 0.95V = 1100Mh/s, 355W |
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I've started using this pool, with multiport, a few days ago. I'm hashing with a little more than 8Mh/s. Profit snapshot is showing me around 0.12btc/day, for example right now it's 0.1132btc/24h. Value is more or less confirmed by the amount exchanged at Cryptsy. But dustcoin is showing me that I should get 0.16 btc/day for litecoin, value which is conform to some other miners I have pointed to a litecoin pool.
25% less on multiport compared to mining litecoin only on another pool.
Any ideas?
I noticed this issue and stopped mining here. My post was never responded too, but my guess is it has to do with the fluctuating prices in the altcoins we mine. I'm still waiting for the feature to pick which coins you wanna mine profit wise, but I don't think it's coming anytime soon. I think between the orphans, fast-changing jumping, and fluctuating prices you end up losing instead of winning at this point. A few points. 1) The profit snapshot is just that, a snapshot. If the coins have dropped in value since being mined, the snapshot will show a lower value (even if you were able to sell the coins at a higher value before they dropped). To get prices closest to the value when being mined, use auto withdraw and auto sell. 2) With middlecoin and multipool there is now over 2GH hopping between coins. Middlecoin and many Multipool users sell everything they mine immediately, which normally results in a sharp drop of the coin price, and then a recovery a few hours later as more buy orders come in. Or, sometimes not. 3) With the fast coins like DGC and WDC, I think that the profitability is still not even as high as calculated due to the Multipool/Middlecoin effect. In fact it may be much lower. I'm working on some changes in stratum to help mitigate this, and also when WDC hits 600,000 blocks soon, the changes that the WDC devs made will take effect, and that should dramatically improve the situtation with WDC. My personal view is that 95% of these coins are on a downward spiral to 0 value. Speculating may make you some money in the short term, but long term it's better to mine and sell, mine and sell. First, thanks for the answer. Like the TheFuneral said, orphans, too often commute, and I might add too much stales of some coins, kill all the potential benefits. I have doubts 10 or 15 minutes a day in some coins have much value if at all. |
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I've started using this pool, with multiport, a few days ago. I'm hashing with a little more than 8Mh/s. Profit snapshot is showing me around 0.12btc/day, for example right now it's 0.1132btc/24h. Value is more or less confirmed by the amount exchanged at Cryptsy. But dustcoin is showing me that I should get 0.16 btc/day for litecoin, value which is conform to some other miners I have pointed to a litecoin pool.
25% less on multiport compared to mining litecoin only on another pool.
Any ideas?
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Same problem; can't login. Mining seems to be working, at least @pool1.eu
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I've made some math. If difficulty will continue to rise 20% each retarget from now on, I'll make 85BTC in 6 months. I'll never make the 102BTC I've paid  . What's your opinion? I doubt it is possible for difficulty to keep rising 20% each retarget for 6 months, it must slow down and stop sometime, so Im optimistic It will mean around x15 the actual hash rate. 28nm ASICs enter the scene, it's very possible. It will never stop. It will reach an equilibrium between manufacturing costs, profit of the makers of equipment and an acceptable ROI interval for investors. In bitcoin world for ROI we are now speaking of months, but in economy even a more than 5 years ROI makes sense sometimes. So here there's room for grow of hashing power. Manufacturers will diminish their margins due to competition so another room for grow of hashing power. And finally Moore's law is still valid. ~10nm is expected around 2017. Another room for grow of hashing power. It will never stop in the next years. And there will be hundreds of millions of dollars worth of mining equipment. |
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I've made some math. If difficulty will continue to rise 20% each retarget from now on, I'll make 85BTC in 6 months. I'll never make the 102BTC I've paid . What's your opinion? I'm so sorry for you! You need to blame ASICMiner, BFL and Bitfury for your losses. After all, THEY caused your losses by shipping product. There're no one to blame. I made a bet and until now it doesn't look very good. But it could have been worse. Like receiving nothing. At least I'll recoup at least a part of my money. Competition... it's very good that it appeared. What's not so good it's the total lack of predictability in mining equipment market. It's hard to say you make an investment, it's more like you're gambling And it looks like it will be no room in the future for small players, which is a little bit sad. |
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Here is an adjusted ROI if you were to get a 3 Module Avalon online today. At the present network difficulty and an increase of 19% every 12 days your expected return in BTC is 79 before it becomes unprofitable.   The online document can be found here. It has Avalon, KNC, Bitfury, and BFL top hardware solutions in its estimated projected returns. Thanks for the info. My calculations were about the same. |
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whoa that wire mod looks sick...
do you think w/o an overvolt that more consistent voltage will help HW% errors drop and thus a bit higher clock even at stock voltage? cuz that mod seems simple enough.
From what I have read from others on Burnins board thread they are seeing big changes in performance with just a 10mv difference. a 16awg wire should be good for 10a without much voltage drop. it will be a couple of days before I can finish up on the watercooling stuff before I can fire the boards up and take some measurements. Interesting. Is the existing voltage supply going to be able to deliver enough current? Probably yes. |
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Regarding the size of PSU, I had 3 module Asic running for a week with 750w PSU. After that the PSU died (it was almost new).
Now, I know some people here have been saying that 750W is too small PSU, even for the 3 module unit. Clearly that is the case, I just couldn't believe it. So be mindful of this when choosing PSU's.
750W is OK. From time to time hardware breaks, especially when running near max specs continuously. |
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anyone tried removing the rear panel for batch 1 and lowers temp?
I have removed for batch#3 and lowered temperature by 2C. The presure felt when keeping panel with the hand was pretty substantial. I'm sure that if the slots were larger and beveled on the inside too it would have been better. You might give it a try, it's not even necessary to power down the machine if you're careful and don't mind back panel to lye captive by the power cord. I cringe at the thought of one of those metal nuts bouncing onto the pdu board. Neah, you'll just test PSU's short-circuit protection circuitry  |
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anyone tried removing the rear panel for batch 1 and lowers temp?
I have removed for batch#3 and lowered temperature by 2C. The presure felt when keeping panel with the hand was pretty substantial. I'm sure that if the slots were larger and beveled on the inside too it would have been better. You might give it a try, it's not even necessary to power down the machine if you're careful and don't mind back panel to lye captive by the power cord. |
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One thing over another, I'd say Avalon's hash unit power supply should have no problem in handling +40% more current (~20% overvoltage and overclock versus the "stable" 350MHz. But this would mean ~+70 power which I'm sure Avalon CANNOT handle as it is, at least for batch #3.
Which part of Avalon you think cant handle it, just the PSU? Can always throw nice 1kw PSU's in them =) 3module is doable for sure I would think. Or are you saying something else other than PSU cant handle this much power increase? You can easily install a higher power PS. But cooling is the main problem. |
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It is Avalon clone based on B2 design that I build self.
Congrats! |
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