This is where undervolting comes into play. Less heat = lower fan speeds (usually) = lower power bill
i had all my fans set to 100% constantly last summer. ambient temp in room probably peaked to around 120oF (outside temperature + 10-15oF). this in a room with a sealed off door (foam around it etc), closed vent, etc. i'm sure some of the air escaped via the vent & some spots in the foam, but not a whole lot. one window w/ a ~$150 industrial fan blowing in from the bottom of the window (and then having to block up the other parts of the window so no air escapes out the bottom) & about 6-9 inches to vent out the top of the window. i suppose back then i didnt mind going back and forth as often, so at night i'd switch the 5830's and 5870's to 1.063v (or in a few cases 1.15 or 1.163v) and then during the day they'd mostly be at 0.95v, a couple 5870's couldn't run worth a shit at 0.95v so I left those at 1.063v. the sapphire xtreme 5830's though, you can still get like 260mhash from those at 0.95v, 300mhash at 1.063v. you'd be surprised at how high you can get some of those 5830's and 5870's @ 1.063v. the best 5870 I had ran stable at 960 core @ 1.063v, best 5830 was 940 core. i had a couple of 5830's that could do 800 core @ 0.95v... most of that stuff back then has already been sold, though. i had to start restocking late last year after all these asic delays (but, then, stuff was also really cheap then... like two 5970's for $500 and such) |
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well, i didnt expect to still be running the GPUs past mid-march or so.
the temps won't be 95+ F (maybe one or two days) on a regular basis for another 45 days or so... and i dont expect to be running GPUs anymore by then.
but, uh, if it is still worth my time, then, yeah, i'll mine in the summer. did last summer, too. just set all the 5830 and *5870's to 0.95v and the 5970's to 0.99
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So I tried the current version of p2pool on a single 5.7GHz Jalapeņo with cgminer connecting via stratum. This works out to about 80 diff1 shares per minute. It "works" in a sense of the word, without causing any weird errors or duplicating work that happen with the Avalon but there are huge lags between share submission and responses from p2pool after a while. Watching the CPU usage, I see a spike to 100% of one core whenever a block of transactions comes in and that coincides with the lag to respond to share submission, leading to more stale rejects if that occurs at the wrong time. The CPU in question is a 12 thread 3.4GHz CPU so it is clearly not underpowered. I suspect what happens on the Avalon is simply a grossly exaggerated form of this leading to misbehaviour.
Does a username like ckolivas/2000+10 help? no, because you'd still get the 6 new works every minute the ratio of rejects to accepts would be the same though, it would be nice if everyone over 5ghash or so did 2000 shares, so people at lower rates may actually get something at some point |
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So I tried the current version of p2pool on a single 5.7GHz Jalapeņo with cgminer connecting via stratum. This works out to about 80 diff1 shares per minute. It "works" in a sense of the word, without causing any weird errors or duplicating work that happen with the Avalon but there are huge lags between share submission and responses from p2pool after a while. Watching the CPU usage, I see a spike to 100% of one core whenever a block of transactions comes in and that coincides with the lag to respond to share submission, leading to more stale rejects if that occurs at the wrong time. The CPU in question is a 12 thread 3.4GHz CPU so it is clearly not underpowered. I suspect what happens on the Avalon is simply a grossly exaggerated form of this leading to misbehaviour.
the same thing happens with GPUs while using cgminer (not a cgminer problem, but stratum I would think) i think i commented on that some months ago minerd picks up the new work much quicker, and it is better to use phoenix for p2pool, or not use stratum |
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Exchanges should be started in business friendly countries, not in the US/UK/Poland/Germany
those are business friendly countries. if they weren't, they wouldn't have some of the highest per capita incomes in the world i suspect you're getting privacy laws confused with business friendly |
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more chips than you can shake a stick at
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uh, all to a wallet address that you have stored on an offline usb drive?
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why, yes, i'll pay $3000 for 8ghash instead of $7000 for 250ghash is this for real?  |
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Just checked and I've got screenshots of 6 outgoing 12 incoming, and others for 5, 2 and 1, Incoming peers are other nodes of the p2pool network AFAIK. I also had set the --max conns at 20 myself on 11.2 and maxconnection=20 in Bitcoin.conf because my upload speed was being completely saturated sometimes of the day when bitcoind would connect to 50+ peers, I posted a pic of how much bandwidth I had used daily since starting P2Pool and Bitcoind in server mode randomly, https://bitcointalk.org/index.php?topic=172090.msg1790993#msg1790993I have not set it currently. This is the first time I have not seen incoming nodes after about 24 hours of the node being up. Thanks for the advice. I have restarted the router as I have seen some errors in the routers logs and restarted all the nodes and miners anyway. I'll see what happens. *edit* Thought I would see how much more bandwidth I had used.  24k 554k 19k 351k 13k 440k 69k 458k 42k 612k 19k 485k 313k 616k 991k 86M 854k 64M 262k 7538k 280k 3707k 197k 501k 94k 363k 63k 2022k 139k 1784k 144k 476k 115k 2910k 166k 5264k 96k 6734k 78k 751k 49k 287k 73k 902k 269k 9677k 83k 1670k 32k 684k 87k 711k 98k 571k 100k 988k that's 1s intervals, all bitcoind and p2pool stuff when it's 5MB/s + it's always a block (*well, usually. sometimes it's just a bunch of transactions being sent at once. better - when it spikes to > 20MB/s) 157GB in *30 days is not much.. do you have caps or something? |
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So I had planned to just run an OS right off of a 16GB usb drive instead of forking over extra money, space and power for a big hard drive. I tried probably every tutorial out there on how to get ANY miner set up and going in linux and everything has failed me. I've tried 3 different distros with no luck. Something always goes wrong and I get errors. Either that or the OS stops working right part way through the tutorial. So I thought I'd just go with what I already know, Windows. But apparently you can't install windows to a USB drive. Google searches only bring up how to install windows FROM a usb drive for people with no optical drives. I'm having trouble here. I won't have the money for a HDD for some time. I had planned on this working.
Another thing I thought of was using an old Pata drive. But the mobo doesn't support it. I have a PCI raid controller that accepts IDE so I tried that but there's no option to boot from that drive so windows won't let me install to it.
oh, nm, I see wouldn't matter if you could install windows to it, since bios wont let you boot to it anyway. you should be able to install windows on a 16gb stick try this? http://www.techspot.com/community/topics/how-to-install-and-boot-windows-on-an-external-usb-hard-drive.116114/ |
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catalyst 11.12 will run 5 gpus in windows (7)
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always use powered risers on pci-e x1 slots
other cases would be based on what cards you already have in the system & the quality of the motherboard
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I recently built a new computer, and the motherboard I have is an Asus Sabertooth x79 (Which I think is too smart for its; own good). Anyway, I have two 7970's (Not Crossfire), mining. When you start the miner, it runs flawlessly, but after everything heats up, around 30 minutes, the computer reboots. I have monitored the Asus Tweaker software, and it seems to do it when the motherboard temperature reaches around 60~61 degrees Celsius.. This is why I think the mobo is too smart for its own good.. But regardless, I have looked for a way to change what temp it does this at, or turn it off entirely, through the BIOS and through the Asus Tweaker program. Any help would be greatly appreciated! Thanks!
I had this issue with a power supply with some sort of feature that would shut it down in case of 'power surges' (temporarily, then it would turn itself back on -- these power surges were probably just 1 amp or less jumps, since I was pulling like 12 to 12.5 24/7..)... Maybe once a month for a 4 or 5 month period, til I replaced it. your issue sounds diff though... i have an asus sabertooth x58 and have never had any random reboots. a couple of blue screens from initial testing & setting clock too high but that's about it.. ed: my guess would be the psu, or some other power related issue |
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Q: I have multiple GPUs and although many devices show up, it appears to be
working only on one GPU splitting it up.
Which version of the README is that in? I searched mine (by copying and pasting to open office and using the search command) and it's not in there. If you have the answer to the question that you posted, would you be so kind as to paste the answer to it as well? Thanks again! Yeah, what a ludicrous response. Q: I have multiple GPUs and although many devices show up, it appears to be working only on one GPU splitting it up. A: Your driver setup is failing to properly use the accessory GPUs. Your driver may be configured wrong or you have a driver version that needs a dummy plug on all the GPUs that aren't connected to a monitor. |
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cgminer 2.11.4 and 3.0.0 I get an error GPU1 invalid nonce: HW error on my radeon hd 5870 runs fine under 2.11.3, even looks like it's producing normal hashes on the other 2 versions all the averages look right the 5s and avg values show what both of my cards together produce, it's just reported as HW error instead of accepted on the 5870. Other card is a 7970 if that matters. Running windows 7 x64
I had this issue on p2pool until I set the shares to a specific difficulty. About half were reported as 'hardware errors' on core 1 of a 5970. Cgminer appears to have shittons of issues with combos of 5xxx and 7xxx cards. I'd use something else. |
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Could be just cheaper to buy the coins rather than buying the gpu mining equipment. I just recieved 4 free pc's but after buying graphics cards my payback will probably take 3 months. Thats calling it close expecially if the difficulty rate soars on script mining. I know in a few months sha mining will be too difficult for gpu mining. There is a slight chance that you can buy an avalon batch 4 IF they produce one. but you got to have a lot of bitcoins ready to go because they sell out in hours.
they won't sell out in hours if they're priced the same as the 3rd batch i would have bought one from batch 2, except i missed it. batch 3 (with the pricing), is just a loss |
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"yes" means BTC+NMC (no exception between stratum or getwork is stated) "No" means only BTC p.s. i wonder if all SHA-256 or scrypt coins can be merged together and how  Judging from this cool site there are only 3 coins that can be merged mined with bitcoins. http://dustcoin.com/mining Bringing exactly 7.5% more earnings exchanged into bitcoins. Today. It fluctuates. Some days ago it was 9% and over a week ago only NMC gave 13% more. These coins can be merged mined only because the coinbase is changed. So that the amount of calculations remains the same like only mining bitcoins. But not all alternate coins allow this. Edit: Link added... about a month or two ago it was 2 or 3% total |
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hopefully, i'm fine without tweaking anything, 121 efficiency here, but it still say orphaned 0, is this a problem?
another problem is that the last version of p2pool don't work for me, it say:"error bitcoin version to old, upgrade to 0.5 or newer!", but i have already 0.8.1 version...
btw, i'm mining the same amount of BTC guild for now, i hope i can make more
litecoin? it said the same thing to me when i spent some time with the litecoin p2pool. i just removed the thing about upgrading from the source |
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I made a list of all the publicly available bitcoin p2pool nodes here - http://p2pool-nodes.info/I have included some basic info about each pool - let me know if there's anything else you want to see added. It updated a couple times per day. nice list mr. t's house of pity has been activated as of 21:00 CST (-5 GMT) to increase efficiencies sadly a few ppl with high hashrates are not on public ports ed: and mr. t is sad that one of these people, some CTG thing, overwrote one of mr. t's shares by getting two in a row ed2: or wait, is this 128.218.etc? then just temporarily lost connection =/ |
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yeah, i have had some bizarre stuff occuring also http://nogleg.com:9332/static/graphs.html?Dayor the weekly chart if mon 22nd midnight to 3 am has scrolled off already this has happened on two occasions it isnt a ddos attack because whoever is mining as "that other address" doesnt have 90%+ DOA shares... i was getting 0% ploss and normal latency to host as well i think it may be a problem with stratum |
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