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122
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Bitcoin / Mining / Re: WTF is this luck (Not an Antpool complaint)
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on: September 28, 2015, 08:57:42 PM
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This is no bad luck. It is done on purpose. (Not submitting shares which do not give a block)
The question is why ? Donation to Antpool maybe ? Or maybe a bug in the mining software ?
What do you mean by done on purpose ? It simply dint won anything and that's all. Mining is gambling. I mean it is impossible to be so unlucky. really impossible (like guessing a private key on first try if you want). So the miner must send only the block solutions and not the others hashes which would have gave him the normal reward in the pool. |
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125
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Bitcoin / Bitcoin Technical Support / Some keys decrypt but not all; not with older version of bitcoin
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on: July 05, 2015, 03:31:44 PM
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Hi, I made today the update to bitcoin 0.10.2.0 from the 0.9.3 version. My wallet is encrypted and I use Ubuntu 14.04. When I entered the passphrase to make a transaction, Bitcoin-Qt 0.10.2 closed and in the log there is : The wallet is probably corrupted: Some keys decrypt but not all. When I type : walletpassphrase mypassphrase 120 It does the same : il closes and shows the same message in the log. Howewer when I start Bitcoin-Qt version 0.9.3 with the same wallet.dat, all works as always and I can do walletpassphrase mypassphrase 120 without problem or create the transaction that I wanted. Is it a bug in the newer version of bitcoin ? If not why does it work with 0.9.3 ? Thank you for your help |
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127
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Bitcoin / Pools / Re: [10000Th] Eligius: 0% Fee BTC, 105% PPS NMC, No registration, CPPSRB
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on: February 05, 2015, 02:34:08 PM
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Why ? Pool profitability for the week indicated in the links are 87,9%, 83,4%, 77,5%, 69,9% 78,4% and 88,4 % Seems like (very) bad luck to me. |
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129
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Bitcoin / Hardware / Re: ANTMINER S5: 1155GH(+OverClock Potential), In Stock $0.25/GH & 0.51W/GH
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on: February 01, 2015, 10:53:42 PM
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Hi guys, After the software mod done for the fan speed of the s4 (see here and here) , here is the s5 fan mod able to change the S5 fan speed by changing software.  This allows to effectively decrease the noise from the s5 AND to decrease the power consumption by a maximum of 10 watts. It should not be used if the temperature is > 70°C. Check that the stop miner when temp is over 80°C box is checked in the configuration page. If this helps you, consider my bitcoin address : 1NfUptoShEtSD2SQV2f45Xr1bTysFnsHiU I have modified the bitmain_spi.ko file into two others binaries which gives differents fan speed. First version with lower fan speed: Download here : https://mega.co.nz/#!MVtHXBKC!VEymK0FxLpuXTl5ZpxnNxlQNKOsp15V0vRy18Vb7dPISecond version with much lower fan speed: it should not be used if the temperature is > 70°C. Check that the stop miner when temp is over 80°C box is checked in the configuration page. Download here : https://mega.co.nz/#!JFNnQALR!3x501jLm1GyzUlDMZ4USWGmDHYCyZKSSiNp4UWRWUnMThe original is here if you need it : https://mega.co.nz/#!1ENCRYIb!pbSf4wXt4nwX_0IYTH1LRh0mZ9_Gw3KgbCel8zyhOjoTo use it : Change 192.168.0.16 with the Ip address of your miner scp bitmain_spi_s5_fan_6.ko root@192.168.0.16:/config/ #Copy the file to the miner then ssh to the miner : ssh root@192.168.0.16then : cp /lib/modules/3.8.13/kernel/drivers/bitmain/bitmain_spi.ko /config/bitmain_spi_original.ko #Makes a backup cp /config/bitmain_spi_s5_fan_6.ko /lib/modules/3.8.13/kernel/drivers/bitmain/bitmain_spi.ko # Copy the new file to the good place cd /etc/init.d/ #Change directories ./cgminer.sh stop # Stop cgminer sleep 1 ./cgminer.sh start # Stop cgminer #Wait 30 secondes Check the web page at 192.168.0.16, you should be able to see the new lower fan speeds If my new binaries help you and you are satisfied, help me by sending some bitcoins to my address: 1NfUptoShEtSD2SQV2f45Xr1bTysFnsHiU Warning: Do nothing you don't understand ; No warranties whatsoever are given by me ; this could not work or be useless ; this could burn your S5 or make it useless ; this could void your warranty with bitmain. |
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132
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Bitcoin / Pools / Re: [10000Th] Eligius: 0% Fee BTC, 105% PPS NMC, No registration, CPPSRB
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on: January 29, 2015, 12:42:58 AM
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I need some help to correctly interpret the pool statistics. To my understanding, the round luck expresses the ratio of spent shares to solve a block. While intuitive as immediate value, it is not suitable for intuitive statistical analyses. Take e.g. the following series of luck values (real ones starting from block 338694): - 137.70%
- 3971.90%
- 18.20%
- 393.70%
Looks not so bad at first sight - makes one think the sub 20% one is well compensated by the lucky ones. But truth is, you need to average over the reciprocal values to get the combined luck of a series, formally: luck(n1..nk) = 1 / [(1/n1 + 1/n2 + ... + 1/nk) / k]For the above example we get the series luck calculated as 1 / [(0.726 + 0.025 + 5.495 + 0.254)/4] = 1 / [6.5/4] = 61.54%If my assumption is correct, then this was a quite bad luck series. Talking variance: shouldn't the average over a longer series be close to 100%? I manually typed the round lucks for the last 100 blocks into a spreadsheet for closer inspection. The averaged luck over this series (covering last ~3 weeks of mining) is 78.74% - which I found shocking low since variance should be leveled out quite well. I disbelieve this number that much that I assume my interpretation is just wrong. Anyone with better understanding willing to comment? @wizkid: are those numbers at http://eligius.st/~wizkid057/newstats/blocks.php available in CSV or JSON format? Thanks After making the math for last 100 blocks : cat Block\ List\ -\ Eligius\ Pool\ Statistics.html |egrep % | awk '{print $8}' | cut -d % -f 1 | cut -d '>' -f 2 | tr -d , | sed 1d | head -n 100 | awk '{SUM+=1/$1} END {print NR/SUM}'78.8334% luck For last 200 : cat Block\ List\ -\ Eligius\ Pool\ Statistics.html |egrep % | awk '{print $8}' | cut -d % -f 1 | cut -d '>' -f 2 | tr -d , | sed 1d | head -n 200 | awk '{SUM+=1/$1} END {print NR/SUM}'82.7441% luck For last 500 : cat Block\ List\ -\ Eligius\ Pool\ Statistics.html |egrep % | awk '{print $8}' | cut -d % -f 1 | cut -d '>' -f 2 | tr -d , | sed 1d | head -n 500 | awk '{SUM+=1/$1} END {print NR/SUM}'90.384% luck For last 1000 : cat Block\ List\ -\ Eligius\ Pool\ Statistics.html |egrep % | awk '{print $8}' | cut -d % -f 1 | cut -d '>' -f 2 | tr -d , | sed 1d | head -n 1000 | awk '{SUM+=1/$1} END {print NR/SUM}'93.1394% luck For last 3000 : cat Block\ List\ -\ Eligius\ Pool\ Statistics.html |egrep % | awk '{print $8}' | cut -d % -f 1 | cut -d '>' -f 2 | tr -d , | sed 1d | head -n 3000 | awk '{SUM+=1/$1} END {print NR/SUM}'94.1135% luck For everything (8870): cat Block\ List\ -\ Eligius\ Pool\ Statistics.html |egrep % | awk '{print $8}' | cut -d % -f 1 | cut -d '>' -f 2 | tr -d , | sed 1d | awk '{SUM+=1/$1} END {print NR/SUM}' luck (The pool is then equivalent for a loyal miner to a 4% fee PPS) Orphan rate is 198/(8870+198) = 2.18% (Quite high if you ask me) The total luck rate for the pool lifetime with orphan is : 95.989*(8870+198)/8870 = 98.13 %Which leaves 1.87 % of withholding hashing power for the pool lifetime assuming it is a long enough time frame (which I think it is) |
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136
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Bitcoin / Hardware / Re: ANTMINER S4 Black Friday Deals 0.409USD/GH/s, FREE International Shipping
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on: December 25, 2014, 12:28:02 PM
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my s4 antminer have just arrived a few hour ago and this is its status . is it ok? [IMG] thank you for everyone who answer my question about money tranfer and bitmain delivery a few day ago  It's not ok. Your diff is not good (64) and your pool won't reward you correctly. You must set the minimal difficulty to 2048 in your pool settings. If your pool doesn't allow that, you have to change the pool for another one (bitminter, BAN, slush, ...) |
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138
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Bitcoin / Hardware / Re: ANTMINER S4 Discussion and Support Thread
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on: November 27, 2014, 02:31:58 PM
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Hi guys, After hard work at trying to understand how the antminers S4 fans works (40 hours of my time) , I have finally been able to change the S4 fan speed by changing software. This allows to effectively decrease the noise from the s4 AND to decrease the power consumption by a maximum of 100 watts (expect 30-50 watts). ... can i ask how to do that ? i have a little linux knowledge and i dont know how to edit ELF file did you do that simple changing the offset 1180 ? or decompile and compile again ?? I first tried to modify cgminer (modify it and cross compile it for arm) but that didn't work because it seems seems cgminer has no control on the fans at all. I then thought that it was in the bitmain_spi.ko binary because it it loaded and needed by cgminer. I dissassembled it (with objdump) (no source available for this one even though I saw GPLv2 in the binary) and tried to understand the changePWM and adjust_PWM_from_temp functions. After rewriting theses functions to C, I understood that I could change a single value and affect the way the fan speed is calculated in changePWM. The dissassembler gives the address of each instruction so I replaced it by lower values with ghex, an hexadecimal editor for linux. And it worked. What is the offset 1180 you are talking about ? The problem I still have is I can't find how to go lower than 2640 or 2520 rpm. |
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139
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Bitcoin / Hardware / Re: ANTMINER S4 Discussion and Support Thread
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on: November 26, 2014, 07:05:44 PM
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Hi guys, After hard work at trying to understand how the antminers S4 fans works (40 hours of my time) , I have finally been able to change the S4 fan speed by changing software. This allows to effectively decrease the noise from the s4 AND to decrease the power consumption by a maximum of 100 watts (expect 30-50 watts). It should not be used if the temperature is > 65°C. Check that the stop miner when temp is over 80°C box is checked in the configuration page. If this helps you, consider my bitcoin address : 1NfUptoShEtSD2SQV2f45Xr1bTysFnsHiU I have modified the bitmain_spi.ko file into two others binaries which gives differents fan speed. First version with lower fan speed: Download here : https://mega.co.nz/#!oEUiwSqQ!_HLU1elXd1YHoNoJDO_FRPrsryGSIrZBzbqTReAp1MgResult :  Second version with much lower fan speed: it should not be used if the temperature is > 65°C. Check that the stop miner when temp is over 80°C box is checked in the configuration page. Download here : https://mega.co.nz/#!UQknnAAT!tAkOkbojWlEkP_NTVB7czJQC3wFs1BD9duK4UWIhJG0Result:  The original is here if you need it : https://mega.co.nz/#!NJtxUToZ!KyTOlad--U1JTddV9sq0XdqBhqygmdIZ0ulV1iLuooATo use it : Change 192.168.0.16 with the Ip address of your miner scp bitmain_spi_fan_6.ko root@192.168.0.16:/config/ #Copy the file to the miner then ssh to the miner : ssh root@192.168.0.16then : cp /lib/modules/3.8.13/kernel/drivers/bitmain/bitmain_spi.ko /config/bitmain_spi_original.ko #Makes a backup cp /config/bitmain_spi_fan_6.ko /lib/modules/3.8.13/kernel/drivers/bitmain/bitmain_spi.ko # Copy the new file to the good place cd /etc/init.d/ #Change directories ./cgminer.sh stop # Stop cgminer sleep 1 ./cgminer.sh start # Stop cgminer #Wait 30 secondes Check the web page at 192.168.0.16, you should be able to see the new lower fan speeds I did not do that for free  ; if my new binaries help you and you are satisfied, help me by sending some bitcoins to my address: 1NfUptoShEtSD2SQV2f45Xr1bTysFnsHiU Warning: Do nothing you don't understand ; No warranties whatsoever are given by me ; this could not work or be useless ; this could burn your S4 or make it useless ; this could void your warranty with bitmain. |
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140
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Bitcoin / Hardware / Re: ANTMINER S4 Discussion and Support Thread
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on: October 27, 2014, 05:58:50 PM
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Hi everyone,
Does anyone have a S4 coupon that they won't use ?
........
All my 200USD coupons expired 2014-09-23 22:28:00~2014-10-25 21:09:00 All right, that's too bad, thanks anyway. I think nobody has any valid coupons for a S4 anymore then  I will try to wait a few days for the value of BTC to go up to make the price of the S4 go down we never know. |
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