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Hello, I have the same problem as Zelek Uther mentioned here before. The miner starts hashing and then slowly dies after a few minutes.
After rebooting I can start it again with the same result....after a few minutes it just stops hashing.
Any ideas ?
I still have this issue on one miner. I've tried different SDCards, different firmware (including Debian Desk from a forum user), I have even swapped out the RaspPi. Still have the same issue where cgminer fails with a segmentation fault. I see this by invoking cgminer from the command line. What I'm trialling now is running just one module at a time. I unplugged the PCIe cable from every module except the first one, and it ran fine on one module for 24 hours. Power down, try the same with just module 2... and so on. I run each for at least 24 hours as a test. Still working through this. Then I'll try two modules... then three etc until I can run stable with as many as possible. I've run each module by itself, then combinations of two, then three, and finally have it hashing stable on four modules. So the result of my troubleshooting is that I have to leave one module unplugged (PCIe cable disconnected). What PSU are you running for the five modules? I bought three 1 TH/s units (each had five modules) and originally I had three broken backplane boards which were replaced. I then had the issue of four boards running at full speed with one at 25 - 29 GH/s.. This was fixed by replacing the stock 1000W PSU with a 1250W PSU then putting the miner into 'turbo moderate' - This kicked the final module into life, cleared my segmentation faults and I am hashing at 1 - 1.1 TH/s on two of the units. Still need to solder on a capacitor to one of the replacement miner boards I received (had to ship two back for repairs) as they arrived with broken heatsinks :-( |
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Neptune's arrived about five minutes ago - Batch#1 order paid for on the 26th November. I'll let you guys know how they perform! Even though they are late (very late) I am a bit excited :-D  If it is preconfigured with any pool details I will let everyone know. Coins per 24h at these conditions 0.1121 BTC How much did you spend on it In total 13 BTC at $900 per BTC (inc. shipping / taxes). I've already bought back the 13 BTC at $500, I'm expecting the miner to ROI around 6 months on its own BTC investment but I also enjoy mining and it opens up opportunities for getting some returns on alt's from time to time. |
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Neptune's arrived about five minutes ago - Batch#1 order paid for on the 26th November. I'll let you guys know how they perform! Even though they are late (very late) I am a bit excited :-D If it is preconfigured with any pool details I will let everyone know. What was the shipping weight on your package ? 15 KG |
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Neptune's arrived about five minutes ago - Batch#1 order paid for on the 26th November. I'll let you guys know how they perform! Even though they are late (very late) I am a bit excited :-D If it is preconfigured with any pool details I will let everyone know. |
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My batch #1 order (paid for on 26th November number 12062) has just been delivered! |
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Hello,
Thanks for your message the facility is in the UK near London the address is private for security but Colocation customers can come and visit and members with over 1TH/s on cloud mining can too.
The cost of a diesel generator capable of powering everything on our small scale would massively out way any benefits given the reliability of the grid. The same goes for a gaseous fire suppression system which I think you were talking about. The sever room is built from metal stud work and fire board there's nothing to burn apart from the board in a miner, every power lead is fuse protected and there's 24/7 remotely monitored fire alarm systems.
The Insurance covers the value of the hardware against fire and theft.
We have 24/7 access to resolve any issues currently we are trying to get Uk Power Networks to have more power supplied to the building to increase the total capacity above 6 x 96amp 42u cabinets.
Power is delivered to each rack via 3 surge protected 32amp pdu's balanced across 3 phase. We have spent considerable effort on cooling and security.
And finally yes we have the relevant expertise to run our facility. Many years in IT and mining for over a year now.
Thanks,
Thanks for the quick reply, I dropped you a message earlier through the site too. Depending on what the costs are like I might pop over on Wednesday and take a look assuming you're around. |
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Hit enter too soon  - What are the provisions for backup power, fire suppression and network connectivity to the site? - Do you have insurances to cover the equipment that would be collocated in the facility? - Does the facility have 24x7 access or engineers onsite to resolve issues with miners? Separately.. You say 252u of rackspace, this is around 6 full racks. I also assume that the 'tunnel' in the picture below is just a wall print so what are future expansion options at the facility? 96 Amps of power at 230v is 22KW, how are you delivering this to the rack? Also how is the cooling provisioned to dissipate that much heat? |
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Interesting, would you be able to confirm a few things:
- Where is the data centre located?
- Who is running the DC, do they have relevant DC experience?
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Nice! I'm installing this now |
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I have a burnt pcb too but mine can still work. I fix back in leaving a small gag without touching the heatsink. I suspect that burnt portion is cause by the heatsink. The temp should be around. 48 to 58'c no more than. 59 Put a box fan or household fan right in front of the coincraftdesk where they are sucking the air . It shild be stable when. You got your replacement. Thanks, Bitmine.ch are already sending out a replacement PCB / backplane for the one that is totally burnt out which is a really good turn around (Already received the tracking number from UPS). I'm waiting to hear on the other broken PCB as I don't think the ticket updated last night so have opened a separate ticket. On another note, the final miner out of my order only has four out of five working ASICs and crashes with a segmentation fault after a few minutes. |
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Thought I'd post my experiences of the three Coincraft Desk miners I received today. One of them had a faulty PCB which burnt out as soon as I turned it on (I would advise opening the miners and checking them over for obvious damage, loose connections, etc prior to turning them on): http://s27.postimg.org/myk7v4oxf/WP_20140521_19_02_31_Pro.jpgTicket is open with bitmine.ch about that so we'll see what happens. The others I am going to check over now and then turn them on, I'll post any performances I get into the thread. |
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Good work guys! I'll get this installed tonight, looking forward to your builds Fuzzy too. Minting button  |
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Reserve me 5 licenses please.
I've also dropped you an email about testing this on a 7950 mining rig; I'm a mod on peercointalk.org / primecointalk.org and happy to write up a review.
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Plus I'm also a fan of the PoS features.. I think being able to secure the network without needing the vast amounts of hashing power the Bitcoin network is currently using should be a good thing in the future.
Also Sunny seems to be on it with good ideas for long term strategy and where Peercoin might sit in the crypto-currency world!
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Second this, also a fan of PPC - Moved my ASICs onto PPC in November and pretty much mined PPC exclusively since.
Good community and the PPC/USD value is holding up well!
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Nice! Sorry I can't be there, but should be a good event and good for PPC exposure too.
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Great article! Nice to seem some coverage for PPC and XPM |
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Just to echo some of the other comments on here, I would love to see USD/PPC trading on BTC-E. At the moment PPC is floating only against BTC on your exchange and with the rises in BTC it is making PPC quite a volatile market. Adding in USD would stabilise this as others have mentioned, but more than that there is the potential for BTC-E to earn a lot more USD fees. I'm coming across more people everyday who are looking to trade USD for PPC and at the moment we can only point them to competing exchanges to BTC-E and I would much rather send them to BTC-E. I've personally been using your exchange for about a year trading USD/BTC, USD/LTC and BTC/PPC and it is the best the exchange out there in my opinion. Now that Peercoin is over $20m in market cap with the exchange rate over $1 I think it is time we have some options for trading USD directly into PPC, before the existing exchanges and new Chinese exchanges take this volume. Peercoin isn't just another alt-coin; it is the first coin to implement Proof of Stake alongside Proof of Work and is ASIC friendly giving somewhere for the SHA-256 miners to go once the difficulty on BTC gets too high. It would be great to have an easy to use exchange allowing USD trades to support this. I think we'd also welcome BTC-E starting a thread on www.peercointalk.org if USD/PPC is listed for further discussion and views on improvements. Thanks, nox_ |
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