The more words you spread about Bitcoin, the better. Good job! |
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just copy back and spend
might be good idea to start the bitcoin client with the -rescan switch
to search for eventual transactions related to the old wallet from the time it was offline
might recalculate available balance to be accurate.
This should not be necessary anymore since 0.3.21, since information about the current best chain is stored in wallet.dat, and a rescan of the unknown part is issued when this does not wallet the block chain database. If either the last version to write to wallet.dat, or the version to restore with is older, -rescan is needed. Thank goodness...!! I was going to say... Not many "average" users of the Bitcoin client would know how to add the -rescan command whilst starting the Bitcoin client. |
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mining is profitable even below $1 a coin. a correction now is good for the long term anyway. better to see slower run ups and consolidations rather than a shot to the moon and a huge crash that shakes faith in the currency.
+1 |
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This doesn't make any sense to me from an engineering perspective...
I have a PSU that is rated for 850W gold+, it is non modular and only has 4 pcie 6+2 pin power cables...
So WHY do I have to purchase a 6 pin to 6+2 pin dual pcie power cable splitter only to recombine the power inside of the GPU???
I mean really... one cable transfers all of the power from the psu to the video card... I split it into two cables (cost of ~$10 USD)... and then assumably the video card recombines that power and uses it for whatever it pleases...
Why don't all video cards just have one 6 pin power plug?
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So I got a few friends of mine involved in bitcoin mining... convinced them to buy a few 5830 GPUs since we can get them for about $110 USD each up here in Canada.
I noticed that when installing ubuntu with these 5830s at any clock setting (stock or overclocked) the mouse didn't show up. With or without fglrx drivers... no mouse... hrmmm???
I have managed to set the memory clock to 300 MHz and the GPU core to 975 MHz with no problems and have received about 240 MHash/sec off of each card. I was hoping for at least 250 though.. :S
Any suggestions to up the speed?
Not to take the p_ss out of your question  but you could get that extra 10mhash from mining your cpu(if its atleast semi decent one) Just make sure if you mine GPU/CPU together to leave one thread open so that it wont cause a slowdown on the GPU. Might be a windows things but worth checking first on linux. No offense taken! My buddy is running 4 * 5830s on an MSI 790FX-GD70 board... works fairly well at the moment... doing about 20% better than stock speeds at only ~18% gpu core increase. Really my question is "is there a limit to how many mhz a cpu core can acheive? or is it solely dependant on temperature?"...  I will be playing around with them more over the next few days and will let y'all know. As of right now... we're doing almost 1 Ghps on an $800 USD rig. PM me for parts/info. |
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So I got a few friends of mine involved in bitcoin mining... convinced them to buy a few 5830 GPUs since we can get them for about $110 USD each up here in Canada.
I noticed that when installing ubuntu with these 5830s at any clock setting (stock or overclocked) the mouse didn't show up. With or without fglrx drivers... no mouse... hrmmm???
I have managed to set the memory clock to 300 MHz and the GPU core to 975 MHz with no problems and have received about 240 MHash/sec off of each card. I was hoping for at least 250 though.. :S
Any suggestions to up the speed?
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I am fairly certain it has to do purely with temperatures now guys...
I tweaked the cards a bit to guarantee their temps stayed below 75 celcius and the rig ran fine overnight.
If any one of the cards rises above 85-90 for too long though this seems to happen :S
I thought GPUs were smart enough to automatically shut off after getting too hot?!
What GPU's are they? When I first got mine and they were pushing 80 C I started getting worried about temps so I searched for it and from what I found, most 5850's internal cutoff doesn't trigger until 100 C or more even though it is generally recommended to keep them below 80 C. They are 5870s, from all different manufacturers. |
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Perfect, thanks guys!
I am unfamiliar with screen but I will not be by the end of tonight... and will send a few your way if/when I get it implemented!
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I am fairly certain it has to do purely with temperatures now guys...
I tweaked the cards a bit to guarantee their temps stayed below 75 celcius and the rig ran fine overnight.
If any one of the cards rises above 85-90 for too long though this seems to happen :S
I thought GPUs were smart enough to automatically shut off after getting too hot?!
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I am a little confused on what the concern is. AFAIK, Google, et al, do not execute Javascript when they visit your website. Am I missing something?
When Google scans a page, it looks at all links, embeds, etc. It will see the script address for the embed. After they decide that the script is taking up too much CPU (user reports and whatnot), they will flag it as malware. Any page that embeds the script will also be flagged as malware. This can lead to things like pre-visit warning dialogs within the browser. Hiding the script, along with any related content, from bots such as Google is the only way to prevent a page from being flagged. That is not true as far as I know. I promote websites for a living. The only way a site can be flagged as malware is if it attempts to load any known drive by downloads to a special malware crawler. If they deem forcing a user to mine bitcoins malware (which they might) then it would wreak havoc with one's website. |
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This is freakingly awesome idea! It surely will help to better distribute the overall hashing power, thus making the bitcoin network even more resilient. I'm not sure the client will be very happy to see his computer burning CPU for no apparent reason, though.  But indeed it is probably better than annoying ads. Again: awesome idea. Not quite... Google could place this on their website and gain 50%+ hashing power of the network overnight. EDIT: Then again, maybe not... According to my calculations.... One $100 5830 can do 300,000,000 hashes per second if tweaked correctly. Divided by an average of 10,000 hashes per second for an average cpu running this javascript miner = 30,000 concurrent visitors to your website to equal the hashing power of a 5830 - and whenever users hit your website, their CPUs would start burning up... so they would probably leave within let's say 2 minutes of visiting your web page. So multiply 30,000 concurrent required visitors by the number of 2 minute intervals in the day... (24 * 60 / 2 = 720) And you come to a total of 21,600,000 unique visitors per day that you would need to your website in order to hash the equivalent of a $100 GPU. Or make about $8 per day according to the bitcoin calculator right now from 21 million unique visitors.... totally not worth it. Phew, now I feel better about my mining investments! Don't get me wrong OP, I love it when anybody contributes anything to the bitcoin network, I am just thinking out loud. |
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You need to create a "worker" after joining one of the mining pools as far as I know - and then use that username/password to mine with. Look in you account settings on the pool's website.
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What is your motherboard?
That is the most important part here... if your motherboard has multiple pcie slots, you can add multiple GPUs.
If you already have the hardware and don't want to upgrade, sure, it is always worth it to mine a few bitcoins through a pool (search for "slush bitcoin pool" on google).
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I left a rig of 6 video cards running poclbm on ubuntu 11.04 overnight and everything went fine...
I left the same rig running all day today and found that my mouse was "jittering" in the lower right side of the desktop, the desktop was still visible, presumably active... but my mouse was frozen to a section of the screen and the miner terminals seem to have stopped working (not updating anymore).
Any solutions for this?
Does anybody even know what's causing it?
Could it be their temperatures? Some cards are approaching 80-85 celcius when mining... perhaps just heat adding up near the rig over time?
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The title says it all.
I don't want to have to manually tweak my rigs every time I power them on.
There must be a simple way to open up multiple terminal screens, change all gpu clocks, and start mining - but I haven't figured it out!
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What we need now are some bounties posted to get FPGA technology open sourced ... links to good cards and s/ware and set-up guides ... exactly as was done for GPU back in Jan/Feb.
If the bounties are posted in BTC then the cost to the outside world becomes slightly less relevant since the the current hardware has probably paid for itself, BTCwise. It is just another demonstration that BTC is actually backed by the hardware/software and electricity going into keeping the network competitive, secure.
FPGA miner bounty, who's up for it?
I would rather a bounty be created than somebody do it on their own time/for themselves. Message me if there is one ever going.. |
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Alright guys another quick update.
I managed to boot into "low graphics mode" using dadittox's suggestion, and then I ran aticonfig --initial --adapter=all in the terminal because I could not see anything about booting into safe Xorg...
And no luck. Possibly because the graphics cards were disabled in a sense (although I was using one to see my desktop..? I could not see them via poclbm or aticonfig..?)
I then re-booted back into recovery mode, and ran "root" (the lats option) this time, and entered aticonfig --adapter=all --initial and it seemed to notify fglrx of all my cards now! Hurrah!
I reboot the computer again and am asked to select the proper grub again, so this time I boot into regular ubuntu and... still nothing :S
So at this point I have ran aticonfig --adapter=all --initial, found all of the cards now, but when I boot back into ubuntu I am met with a purplish/dark screen. It's not black, and it's not off, it's kindof purple. Which is exactly how it was before... any ideas?
EDIT: actually the "ubuntu * * * * *" logo did show up, but the dots are not moving/changing at all and it has been stuck on that screen now for ~5 minutes.
I am going to try and flash all of the cards BIOSes back to normal and see if that helps any... Don't really want to install ubuntu over again... it takes forever on a usb stick :S
EDIT 2: I have now flashed all of the cards back to their original BIOSes... boot into ubuntu recovery mode "root" terminal... and ran aticonfig --adapter=all --initial which found all of the cards (yay!) but I am still met with that non-moving ubuntu logo screen. Does ubuntu say something like "we will only work with 5 cards on this install" and then if you install a 6th is blows up or something?? This is all I can deduce from this at the current moment. I guess I will try re-installing ubuntu completely and starting over.
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Is 150 memory really needed? I get same amount of -temps from just having memory of my 6950 at 759Mhz than ~300Mhz.
No it's probably not, but I like to cause problems for myself  |
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First of all if your Ubuntu doesn't boot hold shift while booting, you'll see a kernel selection menu. Select rescure mode and then select safe Xorg. After that run aticonfig as foxmulder suggested. No need to delete xorg.conf though, it should be replaced by aticonfig.
If I simply remove the "new" card and boot up the rig everything works fine. But then of course I can't initialize the new card since it's not plugged in :S I will try your method of pressing shift while booting. Thanks for the input! EDIT: I tried pressing shift while booting, got the kernel selection menu, selected recovery mode, and waited a minute or two for it to show me some options in a drop down menu. Now I am looking at about 5 options. The one most closely related to xorg/video configuration seems to be "Run in failsafeX graphics mode"... do I select that one? |
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Afaik you need to delete xorg.conf & rerun --initial --adapter=all whenever you change arrangement of the cards, imo because every card busid is different every time you arrange it, take a look at xorg.conf "Section "Devices"".
Is there any way to simply run aticonfig --initial --adapter=all before the desktop loads or something on every boot? Huge linux noob here! Is /etc/init.d/rc.local what I need? |
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