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Thx!

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Thx!

Do you know how much percentage of the network are you representing? 10%?

Which settings are you using for a 1-CPU droplet @DigitalOcean?

Basic settings, on extra large instance (sieve size 1M, sieve percentage 10, round sieve size 30): 4.5k PPS, 550 5-chains/h

Current best tweaked settings (so far), on extra large instance (sieve size 250k, sieve percentage 3, round sieve size 45): 5.7k PPS, 840 5-chains/h

Looking for best 5-chains/h

Lower sieve sizes are better, on extra large instance (sieve percentage 10, round sieve size 30):
- 100k: 6.6k PPS, 660 5-chains/h
- 250k: 5.6k PPS, 650 5-chains/h
- 500k: 4.9k PPS, 650 5-chains/h
- 900k: 4.6k PPS, 600 5-chains/h
- 1.1M: 4.4k PPS, 540 5-chains/h

Lower sieve percentages are better, on extra large instance (sieve size 1M, round sieve size 30):
- 1: 7.1k PPS, 640 5-chains/h
- 2: 6.5k PPS, 600 5-chains/h
- 3: 5.6k PPS, 800 5-chains/h
- 4: 5.2k PPS, 670 5-chains/h
- 5: 5.1k PPS, 610 5-chains/h
- 15: 3.7k PPS, 510 5-chains/h

Higher round sieve sizes are better, on extra large instance (sieve size 1M, sieve percentage 10):
- 20: 4.1k PPS, 440 5-chains/h
- 25: 4.5k PPS, 550 5-chains/h
- 35: 4.4k PPS, 660 5-chains/h
- 40: 4.2k PPS, 730 5-chains/h
- 42: 4.1k PPS, 740 5-chains/h
- 45: 4.0k PPS, 735 5-chains/h
- 50: 3.8k PPS, 500 5-chains/h

Didn't try, the script is almost working out-of-the-box, you also need to "sudo make install" for gmp.

FYI, XPM priming (hp8, Ubuntu Server 13.04 64 bit) on Amazon EC2 with High-CPU On-Demand Instances:
- Medium (1.7 GiB of memory, 5 EC2 Compute Units): ~1,1kPPS
- Extra Large (7 GiB of memory, 20 EC2 Compute Units): ~4.5kPPS

I'm trying to tune the parameters a bit to find optimal settings.

Ok, thank you for your answer, so I might have a problem since I copied the whole directory, and it redownloaded everything... I will investigate further...

Edit: problem found: scp -r MY_SERVER:~/.primecoin ~/.primecoin copied .primecoin into .primecoin leading to .primecoin/.primecoin fixed with: scp -r MY_SERVER:~/.primecoin ~

Does anyone knows where the primechain is stored locally on linux so I can copy it to another computer without redownload it from the network?

I thought copying ~/.primecoin/ would suffice but my primecoind is redownloading the whole primechain, any idea?

Many thanks in advance!

I'm not here to feed the troll, and I don't think what I'll say is implemented for the Unocs website, but technically, hitting a page on unocs.com don't means that the page is on the same server. You can have a frontend and many backends/servers even if you hit the same domain (unocs.com in this case), it can reach several data centers/servers. But, btw, I think you are aware of that.

Come mine the most innovative coin of the year, CPU only for now, GPU mining is coming.

Here are the only options to get in:
- 'Forever alone' solution: Solo mining, diff is little bit high but expect to find some in a month, be patient, and perseverance will pay
- Teamwork and stable solution: Join ypool, the only pool for XPM
- Easy solution: Use cloud based priming services
- Evil solution: Turn on your botnet

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Thx!

For Amazon EC2 instances, you may be considering sudo for the apt-get and the cp commands and maybe more, since you are not root on them.

I heard that ypool isn't profitable, because prime checking by design. The most profitable way to prime is solo mining, but rewards are so rare... Got 2 blocks @1,5k pps during 15 days, it seems that I have good luck.

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Thx!

PM sent

Primecoind is a daemon, basicly that's the node binary, and it is used to connect to other nodes, get the primechain and solo mine primecoins since RPC connections are not implemented in the Primecoin wallet to connect it to pools.

The only pool for primecoins is ypool and it uses jhprimeminer.

Not really, since normally blockchain acceptation is weighted with transactions, the attacker's blockchain contains all the transactions except his own (as a node, you have the ability to rejects transactions).

Yup.

Here is a simplified explanation:
- 2 blockchains: One where you spend it (on the legit blockchain, B1), one where you keep it (on the attacker's one, B2)
- During the attack, you deposit your funds on an exchange and withdraw BTC, LTC, whatever, something different than TRC, these transactions takes place on B1 but not on B2
- You broadcast B2 to reverse TRC transactions you did on B1, this is likely to succeed only if you have more than 51% of the network
- Unfortunately, all the others blockchains didn't reverse the transaction so you still have withdrawn BTC, LTC... and TRC

Time warp attack seems to block difficulty to a low level, so the blocks can be minted at very high speed.

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Thx!

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Thx!

Basicly this is what happens during a 51% attack:
You have to understand that the blockchain contains all the transactions and block are minted on top of it
The attacker build his own blockchain, with his mining speed, he can be faster than the network
Blockchain acceptation is done by consensus by all the nodes, basicly, the longest chain wins
The attacker spend his money on the network chain, but his money remains on his (and longer!)
The attacker broadcasts (release) his chain to all the node, in order to be accepted by them
The longest chain is validated, orphaning the network's chain, reversing his spending
The attacker, sucessfully spent his money (like exchanging TRC in BTC) and keep his money on the newly accepted chain
In this case, I think that he successfully use his minting reward because he doesn't seem to have balance before the attack
This attack seems to give 100% of minted blocks to the attacker

Please tell me if I'm wrong somewhere.

Anything for the third?

Edited my (first) answer, with a slogan