Quirlorimbo
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Activity: 89
Merit: 10
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August 06, 2013, 01:04:26 PM |
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i5 2500
4 core @ 11,5 h/s
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turtle83
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![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
August 06, 2013, 01:45:51 PM |
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Last night benchmarked on cc2.8xlarge EC2 instance ( 2 x Intel Xeon E5-2670 processors) got ~35 h/s Thats 16 physical cores, 32 threads
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B.T.Coin
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![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
August 06, 2013, 01:54:59 PM |
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My client is stuck on block 586. I have 6 connections and it thinks it's up to date but block 586 was issued at 14:54:00 and now it's 15:55:00, surely there must be newer blocks? I already tried deleting the blockchain and reloading it but again it stops at 586.
EDIT: That's European times. I'm still stuck at this block, anybody see a higher block?
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A fine is a tax you pay for something you did wrong. A tax is a fine you pay for something you did right.
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stas
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![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
August 06, 2013, 02:02:44 PM |
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same here
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stas
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![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
August 06, 2013, 02:18:15 PM |
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have restarted the client . now it's on block 587
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B.T.Coin
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![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
August 06, 2013, 02:20:03 PM |
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have restarted the client . now it's on block 587
I restarted my computer and got 587 now as well. It was issued at 16:07 so that was a very unlucky hour for all the miners.
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A fine is a tax you pay for something you did wrong. A tax is a fine you pay for something you did right.
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FreeTrade (OP)
Legendary
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Activity: 1456
Merit: 1030
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August 06, 2013, 02:27:34 PM |
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Last night benchmarked on cc2.8xlarge EC2 instance ( 2 x Intel Xeon E5-2670 processors) got ~35 h/s Thats 16 physical cores, 32 threads Thanks - looking at this and the i5, I'm concluding the bottleneck is at L2 Cache - having about 2MB available per thread is ratio to aim for. Now, if my calculations are correct, at current difficulty, 0.00028632, each hash represents about a 1 in a million shot at solving the block. Your EC2 instance is giving about 35*60*60 = 126,000 hashes per hour - you'd expect to solve one block every 8 hours. To calculate the current cost of mining a block, what's the lowest price Amazon does that type of instance for? (I had a look at their pricing, but couldn't work it out)
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RepNet is a reputational social network blockchain for uncensored Twitter/Reddit style discussion. 10% Interest On All Balances. 100% Distributed to Users and Developers.
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stas
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![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
August 06, 2013, 02:29:30 PM |
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looks like this hour is gone be any better:)
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stas
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![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
August 06, 2013, 02:31:06 PM |
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is NOT gone be ![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif)
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stas
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![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
August 06, 2013, 02:47:15 PM |
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looks like it's block per hour now
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FreeTrade (OP)
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August 06, 2013, 03:25:23 PM |
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Some nodes for anyone having trouble connecting
180.183.156.19 79.113.210.220 37.128.134.26 72.23.76.121 192.241.232.80 46.98.142.139 178.74.103.10
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RepNet is a reputational social network blockchain for uncensored Twitter/Reddit style discussion. 10% Interest On All Balances. 100% Distributed to Users and Developers.
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B.T.Coin
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![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
August 06, 2013, 03:26:06 PM |
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looks like it's block per hour now
Yes, it looks like that. I don't know how the difficulty adjustment on this coin is, but it looks as if some miners have stopped and left difficulty high for the miners that are left. We will see if the difficulty will drop in the next hours. I'm adding another 4-core machine later today but that will not make the difference I guess ![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif)
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A fine is a tax you pay for something you did wrong. A tax is a fine you pay for something you did right.
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oroqen
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August 06, 2013, 03:31:59 PM Last edit: August 06, 2013, 03:44:20 PM by oroqen |
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looks like it's block per hour now
block 585 - 10mins, block 586 - 12mins, block 587 - 1 hr, block 588 - 41mins, block 589 - 22mins, block 590 - 9mins. difficulty has fallen in the last hour or 2.
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turtle83
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![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
August 06, 2013, 03:33:54 PM |
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Last night benchmarked on cc2.8xlarge EC2 instance ( 2 x Intel Xeon E5-2670 processors) got ~35 h/s Thats 16 physical cores, 32 threads Thanks - looking at this and the i5, I'm concluding the bottleneck is at L2 Cache - having about 2MB available per thread is ratio to aim for. Now, if my calculations are correct, at current difficulty, 0.00028632, each hash represents about a 1 in a million shot at solving the block. Your EC2 instance is giving about 35*60*60 = 126,000 hashes per hour - you'd expect to solve one block every 8 hours. To calculate the current cost of mining a block, what's the lowest price Amazon does that type of instance for? (I had a look at their pricing, but couldn't work it out) I nuked the instance after an hour... but.. its currently ~$0.253 / hour on spot. note 8 hour is the maximum time taken to try out all possibilities for a single block. A block could be found sooner, other users could find a block in meantime needing a restart... Taking your 8 hour estimate, for EC2 mining to be successful, a single block needs to be worth > $2.024 at current difficulty. Another thing i noticed was while mining, the memory usage for bitcoind was swinging wildly from couple of megs to > 1 GB . Is it possible to allocate memory once and re-use that? I think a lot of time may be wasted in memory allocation and subsequent garbage collection. Is there some documentation about the hashing algorithm used? (Sorry im not fluent in reading c++ code)
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FreeTrade (OP)
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August 06, 2013, 04:03:03 PM |
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I nuked the instance after an hour... but.. its currently ~$0.253 / hour on spot.
note 8 hour is the maximum time taken to try out all possibilities for a single block. A block could be found sooner, other users could find a block in meantime needing a restart...
Taking your 8 hour estimate, for EC2 mining to be successful, a single block needs to be worth > $2.024 at current difficulty.
Sounds right, thanks for the figures. So someone mining on EC2 would have about 8cents per coin production cost. (Note, difficulty seems to be high at the moment.) Another thing i noticed was while mining, the memory usage for bitcoind was swinging wildly from couple of megs to > 1 GB . Is it possible to allocate memory once and re-use that? I think a lot of time may be wasted in memory allocation and subsequent garbage collection.
Yes, that optimization would likely improve hashrate. I'll bet someone has already done it. Is there some documentation about the hashing algorithm used? (Sorry im not fluent in reading c++ code)
Not yet.
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RepNet is a reputational social network blockchain for uncensored Twitter/Reddit style discussion. 10% Interest On All Balances. 100% Distributed to Users and Developers.
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Zyl
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Activity: 33
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August 06, 2013, 06:47:13 PM |
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This coin network is not working because of lack of UPnP support in the compiled release.
For many people, '1 active connection to Bitcoin network' = All orphans
Doing a release without UPnP support is a scam, because like you said, you'll make sure the blockchain stays protected.
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stas
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![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
August 06, 2013, 06:54:53 PM |
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Actually it is working. I have 8 connections to the network. I have mined few blocks since it was lunched. Didn't get any orphans. right, it's not 2000 coins per minute like some other coins ... so because of that it's not working? ![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif)
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B.T.Coin
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![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
August 06, 2013, 06:56:27 PM |
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This coin network is not working because of lack of UPnP support in the compiled release.
For many people, '1 active connection to Bitcoin network' = All orphans
Doing a release without UPnP support is a scam, because like you said, you'll make sure the blockchain stays protected.
Just use the addnodes that are posted in this thread. When I use these I have no problems connecting and I get 7 or 8 connections in a few minutes.
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A fine is a tax you pay for something you did wrong. A tax is a fine you pay for something you did right.
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FreeTrade (OP)
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Activity: 1456
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August 06, 2013, 07:22:12 PM Last edit: August 08, 2013, 12:55:06 PM by FreeTrade |
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Okay, fixed the slow startup problem - here's the link https://docs.google.com/file/d/0B-5Ax5kejTpMTHZnUF80cGlFU1k/edit?usp=sharingYou'll have one more slow startup as it indexes, and after that startup will be . . . you'll be pleasantly surprised. Also I've bundled VanityGen with a .bat file - click on that to create your own open-ended grant award addresses. The last grant awarded only had 253 coins voting for it. Beat that and you'll get a free grant award.
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RepNet is a reputational social network blockchain for uncensored Twitter/Reddit style discussion. 10% Interest On All Balances. 100% Distributed to Users and Developers.
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FreeTrade (OP)
Legendary
Offline
Activity: 1456
Merit: 1030
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![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
August 06, 2013, 07:31:39 PM |
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This coin network is not working because of lack of UPnP support in the compiled release.
I'd like to add this. If anybody has step-by-step instructions on how to compile this library and include on Windows - help would be gratefully accepted.
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RepNet is a reputational social network blockchain for uncensored Twitter/Reddit style discussion. 10% Interest On All Balances. 100% Distributed to Users and Developers.
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