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You can't. With WMI or RDP the process won't have access to the host GPU.
It is failing to "initialize CUDA" because it isn't seeing any valid GPU.
You will need an alternative form of remote management. ssh, logmein, pcanywhere, etc.
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++AMD Reference 5970 - great card!
This will do stock core / 150 mem @ .95V ~700 mh/s with CGminer
Had it for a couple of months
Asking: $425 + shipping If you ever want to get more realistic about the price let me know. Open offer of $325 |
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commone D&T your going round and round.... I don't think I am, I honestly have no idea what you are talking about anymore or what you are confused by. Given you seem to be a smart guy I think I am being played so I will stop. issue is. powing our rigs with 220. I just wire regular 20amp outlets with 220 and use the supplied power cord for the PSU. ONE LAST TIME. a) that is a code violation b) why? 110V @ 15 = good for 1 rig. 220V @ 20A = good for multiple rigs. 220V @ 30A = good for 50% MORE rigs at not much more cost. if you are plugging 1 rig into the wall you don't need 20A OR 220V. How do you plug in your PSU's to the 220 ? I explained it up thread... twice with both diagrams and pictures and links. I don't really know how to explain it anymore. The OP understood on the first try. |
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and how much would 25 special power supply cords?
I did not even see (not that I looked very hard) cords with 30amp plug -> PSU
No such cable exists because there is no PSU which uses that much power. The cord you are looking for is a C13 to C14. They cost about $1 to $3 in bulk. http://www.monoprice.com/products/subdepartment.asp?c_id=102&cp_id=10228#102280530A outlet -----> 30A PDU (fancy name for powerstrip  ) -----> 6 to 8 rigs 1 outlet for 12 to 14 GH/s If you just want to plug 1 rig into each outlet then you don't need 20A. Plain ole 110V @15A is more than enough to power a single rig.  |
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They do but why would you want 110V?
you dont: my original post: I would only add that you do not need new cords, you can wire regular plugs for 220. Just make sure you mark them very well so you dont plug a fan or a light into them. Not a good idea as it is a code violation, you risk voiding your insurance policy, and open yourself up to liability. Given how cheap the proper outlet compared to the total cost (equipment, lease, cooling) of 24 GH/s farm just use the right outlet. also, I would use a commercial grade 20 amp outlet when wiring for 220. Which is why I said why 20 when 30 is almost as cheap. Then at which point you said 30A 110V doesn't exist. It does but not sure what that has to do with 20A vs 30A on 208V/240V. |
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They do but why would you want 110V?  |
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It's a shame that nVidia cards perform so badly in OpenCL calculations.. Otherwise GTX 680 is overall way better card than HD7970 for example.
Well they are pretty good at OpenCL and even better at pure CUDA but integer math has always been a weak point in NVidia's product line. |
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Are you sure it just isn't slow? I rarely use the GUI client but if you hold the mouse over the blocks icon it should show the block #. If you hover it over the connections icon it should show the # of connections.
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Yeah deals can be found but it is hit or miss. I got 3 5970s for $285, $330, and $400 (including a $100 waterblock). Sadly one of three was bad.  . For the next two weeks I didn't get a single one which wasn't over my limit ($330). Luck and timing plays a role. |
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also, I would use a commercial grade 20 30 amp outlet when wiring for 220.
Most of the cost is labor. Not much difference in outlet, breaker costs when it comes to 20A vs 30A. Just go 30A from the beginning. For safety I would go with locking connectors. NEMA L6-30R outlet and plug.   |
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Unless you have a very clean well, you might gunk up the heat exchangers. I guess I hadn't ever thought of using anything except for a closed-loop recirculated system. A flat plate heat exchanger might not work very well (plates are very close together) but a tubular heat exchanger would likely be fine. They are less efficient (heat transfer vs size) but you can always get a larger one. If you have very hard water you will get mineral build up on the "well side" of heat exchanger but nothing an annual maintenance and cleaning couldn't handle. |
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I am investigating whether water cooling would be cost effective. I will have access to well water in the space, and could run several heat exchangers.....seems very efficient relative to AC.
My only concerns are my lack of experience with waterblocks, and the high capital costs.
Unless you have a very clean well, you might gunk up the heat exchangers. I guess I hadn't ever thought of using anything except for a closed-loop recirculated system. I would recirculate standard coolant throught a submersive heat exchanger in a closed circuit. Problem is the water in the well will heat. Constant fresh water as to be flowing. This solution might not be cost effective in the short term. It also negatively impact ecosystem. Depends on the well. Some wells will be tapped into a slow moving branch of an acquifier meaning any heat load short of a reactor is going to be insignificant. Also "earth" is a decent heat sink. Depending on the depth of the well you have quite a bit of surface area. Pumping the heated water to the bottom of the well is an option. Likely need to do some experimenting. Obviously one could experiment before buying waterblocks. Heat is heat. 23 GH is likely 10KW? 10KW = 34,000 BTU/hr. Simply find a heat source (like propane burner) which can heat water dumping 34,000 BTU/hr into the water loop and you got a good test. No need to even buy a heat exchanger at that point. The best system would be one that has two wells connecting to same water source (pump cold water out of well, pass through heat source, pump into "hot well"). Sadly I can't put a well on my land because if I could I would be looking into it. |
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Very nice setup and thx for the resize. Windows Remote Desktop no likey massive images.
I notice your PSU is "behind" the rig. I have found turning PSU on the side and putting it "beside" the rig helps keep all the heat sources blowing the same way (cool air behind rig, hot air in front of rig). That was a minor thing that helped and it didn't occur to me till I was walking in our datacenter and looked at some servers which have "front mounted PSU". Lightbulb moment.
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come on resize it man or at least use the [ img width=xxx ] tag
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I will take it. I'll send first and let you build some cred (seems unlikely you would try to pull off a 4 BTC scam ) Your signature address good for payment? |
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What if someone bought up all the existing dollars?
I think the Chinese are trying but they forget how good we are at printing. One thing no country can do better than the US is print dollars (oh and sell weapons of mass destruction). |
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Because for every one of those examples a password recovery option is available. People use password recoveries all the time. There is no password recovery for an encrypted wallet. Encrypted wallets by default would be a disaster.
Worse many "casual" users may be confused by the very concept of irrecoverable password. Since almost no services exist that have irrecoverable passwords casual users likely need an education. I would imagine enabling encryption on the 1.0 client would need to be pretty comprehensive. Something more like a wizard explaining that losing password means a complete and irrecoverable loss of funds and that there is no "forgot password" option. It would also be good to: * compare the user's password against a known password list ("your attempted password is already known to attackers please try another one") * give the user a password strength meter with practical strengths ("your password can be guessed in less than 4 days by an attacker with a single computer" * providing a "print out page" for safe keeping (with warnings like store this in a safe, all your funds can be stolen is this document is lost) It would also be a good idea to provide "popup" warnings with frequency and intrusiveness directly related to the balance. Gavin is absolutely correct in pointing out Bitcoin is 0.x. It is 0.x for a reason. |
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Examples usage of setminfee Setting minfee of 0.005 BTC per KB E:\bitcoin\bitcoin-0.6.0rc5+customfee-win32>bitcoind setminfee 0.0005
true
Checking minfee using getmininginfo E:\bitcoin\bitcoin-0.6.0rc5+customfee-win32>bitcoind getmininginfo
{
"blocks" : 173278,
"currentblocksize" : 1000,
"currentblocktx" : 0,
"difficulty" : 1498294.36281651,
"errors" : "",
"generate" : false,
"genproclimit" : -1,
"hashespersec" : 0,
"pooledtx" : 37,
"minfee" : 0.00050000,
"minfeeper" : 1000,
"testnet" : false
}
Checking the memorypool returned by bitcoind (used by p2pool or solominer to generate work) E:\bitcoin\bitcoin-0.6.0rc5+customfee-win32>bitcoind getmemorypool
{
"version" : 1,
"previousblockhash" : "0000000000000223a54ba1689d09a07aac9c172002fee5866b18c
2e52ecf5569",
"transactions" : [
],
"coinbasevalue" : 5000000000,
"coinbaseflags" : "062f503253482f",
"time" : 1332941298,
"mintime" : 1332936934,
"curtime" : 1332941298,
"bits" : "1a0b3287"
} Note tx section is empty. At the time of execution the node has not received any unconfirmed tx with a fee of >= 0.0005 BTC Setting the minfee to 1 satoshi (1E-8 BTC, the smallest unit in Bitcoin) and checking mempool Essentially this includes all paying txs and excludes all non-paying txs. E:\bitcoin\bitcoin-0.6.0rc5+customfee-win32>bitcoind setminfee 0.00000001
true
E:\bitcoin\bitcoin-0.6.0rc5+customfee-win32>bitcoind getmemorypool
{
"version" : 1,
"previousblockhash" : "000000000000087818d53138fbd4256625e37c98a38b6fe8569e56852c92ab70",
"transactions" : [
"0100000004820c6bd1fa106889710348767abb456e5f38b82c3acf570a3c2635480bab6761010000008c493046022100f3cd34b9f81b525
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14104854590bebc0e4b6daccf49084bb9df726c34bc1038f41cfdfc6e1738d84768ee682492c7f05c726dd1e5539bf5ee41233189e5b82295faad798
7f31012aac52affffffff73a1e10e24c7aee9e4d868692cc4249dfb7189dddbeecf3943d24c0badf10757010000008c493046022100e6a8db0114607
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fa4566cf0828a1effffffffbd4e061d000de7688e4de4d7111ddb804de9d2cbd1217748038e296b0c03cc02010000008b483045022100e54f20c2758
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1014104854590bebc0e4b6daccf49084bb9df726c34bc1038f41cfdfc6e1738d84768ee682492c7f05c726dd1e5539bf5ee41233189e5b82295faad7
987f31012aac52afffffffff4a1d363c469b1ff2df888f82a02402accafb01cddc3b00f22299afd5487721b010000008a47304402203ace625c70475
cf2de8f41e3e492c13c4cf459cae42b1c37ba5ae1ad1f18c57f02200c57f4f0fc49be27f3933decb8e22ba89337f1e57a7e38e33642e142515501fa0
14104854590bebc0e4b6daccf49084bb9df726c34bc1038f41cfdfc6e1738d84768ee682492c7f05c726dd1e5539bf5ee41233189e5b82295faad798
7f31012aac52affffffff0249a5a700000000001976a914b31e6898ceb2fe42ab62ee03400ac24cab90be0f88ac00ca9a3b000000001976a914abe03
f415de01d078829249d0abdec8c61466aab88ac00000000",
"0100000001595e7ee07f3d6036f2e28c290e4e5cab0689fc5153217fff0e43e95118862c61000000008b483045022100a2d355c1a460b4f
b7e000d37543ca85172d6f69a3ef084e3218e3970718083e4022027d648435c3f742c215eac0e4e5e16d446c96033d876b3de532160513ad6123d014
104c4506a275655a451fd7d43d9650661d5de7aeffb92101d2d702198a62a7f6b8ede1f8e7e70dfcb2e6d3ab5c29a7b7448fcc5052497998ecd022d6
be8241bbdc0ffffffff02e05d0954000000001976a9145466de9c2c4bbe7346470b1b028156996f151cc188ac406d1b23000000001976a914cf09a8b
3d56b1ae91f9f908ef5a485f12612d1b788ac00000000",
"0100000008986745fd96b4112c018e1cdecfe7f51008026f19822856bee9dbd789192d8b732a0000008b483045022100fa5fa977579fc60
e5a919d7d762cc191683790108c914b2265077a86143ead570220125c386f43d20c67df9d07b41f2ba60c808c747c519f9ce42d1ec7fb39a9eb9e014
10414bf0a8673732d34c20aee6c790a563d4025278ae510ff2ff4e0e2098bd65cd892ec596a7335fb250ecf70dd54a1351214301da2b69bfad4d5f75
65eedfeeb95ffffffffbd67aebc82a410c42183c5cdadb16597bf0f677112693a95ca40905e0c458a1c870000008c493046022100f62b188dac58832
4fd994452939165dbd3e0610f0dba88edc45162cb8adf66f8022100b5b637073059db398f29b566c17da3959866aaf6bc1209743c8dc3dc4ddc5cbf0
1410414bf0a8673732d34c20aee6c790a563d4025278ae510ff2ff4e0e2098bd65cd892ec596a7335fb250ecf70dd54a1351214301da2b69bfad4d5f
7565eedfeeb95ffffffff708c77f212d0f70535aa1ab2a08d45499469d4c5b8c969166d18921e4c7ce36a360000008b4830450221009d41e4dc8095b
bf41cc707dd39b905d918061e9af1c3ebe4be27a1ebc5f5366f02200c3d0fd038a5276d75e7542b50008bf1739f4582b690d98e47609809d95b1a5a0
1410414bf0a8673732d34c20aee6c790a563d4025278ae510ff2ff4e0e2098bd65cd892ec596a7335fb250ecf70dd54a1351214301da2b69bfad4d5f
7565eedfeeb95ffffffff72d37e5d931dd8c379052d702afb25983927055dd4a621aac66901a13bba6a9d2f0000008a47304402206b20c438e2a981c
82385eca99ac00d17bf3893c0b23092a3da9be747347edf4702201712aa42ff4bf37d64298c477b34061713989677c9fe4df0f619331025bcce62014
10414bf0a8673732d34c20aee6c790a563d4025278ae510ff2ff4e0e2098bd65cd892ec596a7335fb250ecf70dd54a1351214301da2b69bfad4d5f75
65eedfeeb95ffffffff80b290fc21ad8b97521fb67961a5983361ce053ba9959ab2188258857edbc215180000008b48304502210085c56958bafe3e8
32aadc2a354f2de76467b60e653a47b964c7eddb0f7344dda0220084d691b196acbbf33d94aec64d044f10f95f5050e58b00fb3309d72d41e3564014
10414bf0a8673732d34c20aee6c790a563d4025278ae510ff2ff4e0e2098bd65cd892ec596a7335fb250ecf70dd54a1351214301da2b69bfad4d5f75
65eedfeeb95ffffffff1053469ea8e4e643fff50eabe8ed92d0c877a4ca7497151304578fdba730425e750000008c493046022100a682b3cfd7aa01c
094aff041fa9e2102de37f76af91fa995cb1c82c644dfb42e022100c365c36ae78c41c318e635ba9c5c267db932a0ae6eaeec878a4dfded21e3bc310
1410414bf0a8673732d34c20aee6c790a563d4025278ae510ff2ff4e0e2098bd65cd892ec596a7335fb250ecf70dd54a1351214301da2b69bfad4d5f
7565eedfeeb95ffffffff682397d21cf100e2e37819a25ddc9421bd35aab8aacbfb77e33ea2e50ded4079130000008c49304602210082767c02c33ee
d79d7afda96cedc03dd6368cb6b2f0ca0480b659d813d8b50ee0221008ab2aaec43210fdaaaeac23adb7d240ecf87c1b1e06149cba805401447e0926
601410414bf0a8673732d34c20aee6c790a563d4025278ae510ff2ff4e0e2098bd65cd892ec596a7335fb250ecf70dd54a1351214301da2b69bfad4d
5f7565eedfeeb95fffffffff3326d4c5c34b116c4af6672e46ac09dabdb039a22e5cc249a2810a343328c343e0000008b4830450220395aa223d95ee
d4d1294ee987f358eb10f7d17310c98fd9f878f4fc84295b330022100e144ccd018f50eb6982ebe568dd6fd850920bd3e915f405c0866937249d7f76
601410414bf0a8673732d34c20aee6c790a563d4025278ae510ff2ff4e0e2098bd65cd892ec596a7335fb250ecf70dd54a1351214301da2b69bfad4d
5f7565eedfeeb95ffffffff0266dc0200000000001976a914f52562ac702bd680e224adced83c83a18db7cead88ac400d380c000000001976a914bbc
dec3fc1e60e61815ce3017ef4628715f995bb88ac00000000",
"010000000199ea376b2eff833fc3e28beceaec19943b241d82803e5628ae15a5332fc016211e0000008c493046022100adf90d9a6875f81
da1777ec4bd3d4c243851807250bbba2a546afcd52c25f39e022100dbea922df2ee0297bc2fd4b336526f92fbb19e5341ada461188599f10e61e58f0
14104b785a383162fb61566fd8931ca81737150616f101f772d51185afa9626f22826e1eb539080d039f0ee1fb27afbbff059b25f67bf3ee48efbbd1
57058bcf8c16cffffffff02a29d0000000000001976a9148c5cfffd4b8b2b5c7491fd8f8bf29078edb9f18f88ac60198501000000001976a91411574
6a81d18e3142141facf9e0e34326c25831e88ac00000000",
"0100000001ded223b8ea4f7ba4586db2e6cf975719e7bd5d36febdabe8629b1c532e978d9a010000006c493046022100ef2467f2c8e806b
eeed1adb9456258f429b1ff97d7728415ff17611e5033d093022100cb22a3aec2a6a83a10e725c2f013a32efbc03d0d4d7ca59c7ef30c4d02b4cbcb0
12102cce9c77c9586f5ba9cf8682a200522b235f0aa3e46c681e7698f1867a47c071fffffffff0220a10700000000001976a914c9eb4dd2f5175a15f
b11a638450dba76396569be88ace02f3808000000001976a9142dbde30815faee5bf221d6688ebad7e12f7b2b1a88ac00000000",
"01000000017703b5bdddfcff918bd2502d13a37fcc41d3741711ba4ceb83a8d05bcb9b6b21010000006b483045022100cfceae940568471
7386c9abe5a6c49f2afaf6d6469a7263124c7435a1fbca46902205a2b75795dddf50c9cbf66b84690dbea29a8a00d797ad366f39ef7968890059e012
102cce9c77c9586f5ba9cf8682a200522b235f0aa3e46c681e7698f1867a47c071fffffffff0220a10700000000001976a914b0af94b8add7c589747
ebf5c8be217cf04fff1d888ac50ea1a05000000001976a9142dbde30815faee5bf221d6688ebad7e12f7b2b1a88ac00000000",
"01000000013e4ddad8766a7d899d60deeb958da585247c801dbfbaa6cb969f645e8cac40c8000000008b483045022100a6a031ab842b8b8
68ec384378016f28ed99224370e478e3e974a64783fba778902201802cbbdae85017805ee2d54870d3422a0b1c7a205466c9343ed4ad27dc8e3a1014
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b2dde17ff86ffffffff02b0e94a07000000001976a91436e284659b13cc4df6a24efa38298321fe3879b088ac20e88d00000000001976a91423d5b12
c9deba304b7773cd5a7de0d55a739852988ac00000000",
"0100000001e908118907b83ad6db5250271070c7253971a2c3b7a47a283953a4640096bc4d000000008c493046022100985506639078d54
456521db3ac08731623de5746645ffa8ad728e10f95e13842022100e73dc34ecb35741d6e88095e74c5aa6312b198d30ee41e6d605f814fdcf381e50
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ae823585193faffffffff026a709a01000000001976a914ec9891bfba0c64a4683a73dca4c1fb2e630145b588ac01000000000000001976a914d01ee
ecf89e7b13082b9e90a1a8c62115465bd3b88ac00000000",
"01000000011ab8482a97a10f046513944e1425e601a296920d469184c8ad937c31043078e0000000008b48304502206f0480265d67e0f0a
7084610f545439b1c35cf1f98e6181d932d1db1238fc2380221008c302b27c3ba22c478dec3feb0fb7c1235be615afa627641a0bfc7ac9d939dfd014
104e9c6e19c370c5246599406629d30af585a22951bad08699b2a164f5213bf4620ca839b84505da72072973af8cc5e133f2b85948dfd553db1a91d4
7da92eed571ffffffff02a04da206000000001976a914cee251fb299a547d29e2d3f8c0475f8c3a8b793688acc0d8a700000000001976a914c347c45
81999a0f2875aa9ddbee9e47236b291e788ac00000000",
"01000000019032628f653fba3273c0124294ec60567c675c35866326b235fbe9bb0179c370000000008a473044022075a988ab396170d17
9872320ad663ca41bd12b1ca5db007ada82e178f9508d4502200c03e286231346e3e5f2cbb4728265d8fd748d74df637a1edd3a32eba0885cf001410
458e0f4cc38664fdf047cc4f59cc2f62768d51d7072a0cb453644da167ea2526612f2d59e66c44ded15b1603a5d4091368ac3e8def80060312f6acf0
1c49d711dffffffff0230a21306000000001976a914539fde3640b31e49096aaab08907461c59e7740988ac20e88d00000000001976a91423d5b12c9
deba304b7773cd5a7de0d55a739852988ac00000000"
],
"coinbasevalue" : 5001450000,
"coinbaseflags" : "062f503253482f",
"time" : 1332941492,
"mintime" : 1332938361,
"curtime" : 1332941492,
"bits" : "1a0b3287"
} Roughly 10% of tx volume includes a fee of some token amount. p2pool works fine with modified bitcoind. I have noticed no errors, changes in payout, increase in stales, or reduction reported hashpower. |
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I still don't understand what the point of them are, even if I won't be using them.
The network has a real tangible cost. Fees pay that cost. Now Satoshi was smart and realized in the beginning the cost of a secure network would be higher than fees can bring in. So that either leaves the network horribly weak and underfunded or fees so excessive nobody wants to use the network. So he created a block subsidy which also solves the problem of initial distribution of coins in a fair manner. Miner total compensation = subsidy + fees. Currently the subsidy is 50 BTC but that declines over time. Eventually the subsidy will be 0 BTC and long before that it will be <1 BTC. Today: Miner Total Compensation = 99.9% subsidy + 0.1% fees Some point in the future: Miner Total Compensation = 50% subsidy + 50% fees Eventually once all coins are mined: Miner Total Compensation = 0% subsidy + 100% fees |
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That is not an accurate statement. Unless proper precautions are taken, a 0/unconfirmed race attack can be successful -- maybe 50% of the time even.
The precautions include configuring the client so that there are no incoming connections allowed and to explicitly have outgoing connections to the top miners. How about we try it as a bet. You say it is 50% successful? Tell you what I will give you 10:1 odds. You should be 500% profitable then right? To break even you only need to be successful 10% of the time. How it works is you try to double spend me. If successful you keep the double spend and I pay you 10:1. If you fail i just keep the funds you failed trying with. You can name the stakes and time. You can keep sending me money until you want to quit or I lose 100 BTC. Let me know when you want to play. I've actually been surprised that there haven't yet been reports of anyone in the marketplace forum or on the #bitcoin-otc marketplace losing their bitcoins received to a double spend race attack yet. It takes really no technical skill -- just use the same wallet in two places and try to spend from the same coin to two different addresses. Eventually one of those times the one seen by the recipient will differ from the one seen by the miner who eventually gets that block. Um you don't think the buyer won't happen to notice the tx go INVALID as soon as his client sees both versions of the double spend? To accomplish a double spend you can't just double spend you must a) send tx A to victim (A) b) send tx B to the the attacker (B). c) complete the actual transaction (in person is going to take at least a minute or two) c1) ensure that tx B is propogated to majority of pools. c2) ensure that tx A isn't propogated to majority of pools. c3) ensures that victim (A) doesn't see double spend B e) get away with item of value before victim detects deception and stops tx. It is possible and yes if you are moving 28 million dollars in bearer bonds you should wait for 6+ confirmations (maybe 144 confirmations) but there is a significant challenge to even a 0-confirm double spend and a face to face tx of low value is low risk from such a complex attack which requires nearly perfect timing. A finney attack in person would require the attacker to a) be able to generate blocks in very short time span "on demand" (i.e. like I said "massive amount of hashing power") b) generate a block and hold it before the tx. c) complete the tx (likely minutes) d) broadcast the held block before the network finds another block. Every 12 seconds the block is held the attacker loses 1 BTC in expected value (due to the chance of another block being found and broadcasted). Finney attack is useful against instant delivery high value irreversable online tx because the attack has a cost to the attacker which is directly related to length of time and value of the tx. Even online one can greatly reduce the effectiveness by simply waiting. The attack has a cost to the attacker of roughly 1 BTC per 12 seconds. Finney attack is hardly applicable for a face to face meeting which may take minutes involving a small sum of money. Attacker's break even point is 5 BTC in value per minute elapsed between time block is created and held and time tx is completed. Trying a Finney attack here means the most likely outcome is the attacker simply loses a block (and 50 BTC). |
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