I think it'd be ideal to use a 2D array with the three composite values stored sequentially in memory as single bits each
Probably should be a std::bitset datatype too
+1 |
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At tacotime's suggestion, I'm working on integrating a version ( https://code.google.com/p/primesieve) of a prime-generating table into the code, but I wasn't sure where the big time-waste was in the miner. Is it in the prime table generation, or is it more in the Weave() method? If I'm understanding it correctly, it looks like the vectors of vfCompositeCunningham1, vfCompositeCunningham2, etc are being filled with true/false values around line 553 of prime.cpp: if (((nBiTwinSeq & 1u) == 0))
for (unsigned int nVariableMultiplier = nSolvedMultiplier; nVariableMultiplier < nSieveSize; nVariableMultiplier += nPrime)
vfCompositeCunningham1[nVariableMultiplier] = true; How can we examine this algorithm and hopefully come up with a more optimized version? Could this not be handled by filling a with a prime table? Or is there necessary computation going on there? Disclaimer: I'm not a strong math guy nor am I a strong C++ programmer, but I can at least look at the algorithms. |
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I've hit a few blocks so far, but when I use the getprimespersec command, it shows up as like 3-5 primes per sec. Pretty sure this is wrong, seeing as I'm using an 8350. That and that I've hit a fair number of blocks in the last few hours. Anyone else having issues like that?
That isn't happening for me, but I am also on an i7 3770. What it does suggest is that getprimespersec really isn't related to how fast you're solving blocks. If you've hit a fair number of blocks in the last few hours with 3-5 primes per sec and my i7 hasn't hit a block in 4 hours with an average of 220 primes per sec, something is amiss, or you're just very lucky. |
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Pr1nafupC6nrcRAKBNVq69CvTokzYPSqLj
I'm liking phenixcoin because I think that they have a ton of resources as well as some potential great sites coming out. Exciting times ahead for them, especially with the partnership between phenix, feather, and worldcoin.
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I will sell up to 50 XPM for 1 LTC/5 XPM, or 10 LTC total
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I haven't gotten any blocks in 4 hours. The diff hasn't changed, so I am assuming that people who have optimized their miners are getting the lion's share. I don't know much about miner optimization, but I am going to start poking at the code to see how these optimizations could be made because I suddenly have motivation! LukeJr, do you have any hints for people getting started on where to look or what to look for? Are you running Linux?
Actually, it seems that the diff increases with every block mined. If you list you transactions, you will notice that the diff increased between every block you have mined. Yeah, but it started at 7, and now it's at 7.2, 1.2 days later. However, in my experience, the ability to mine the coin has gone down significantly. I was finding about a block an hour, and now it's been over 4 hours with nothing. I could have been extremely lucky earlier, but I would place my money on the assumption that at least a few people have figured out how to mine this in a more efficient manner. |
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I haven't gotten any blocks in 4 hours. The diff hasn't changed, so I am assuming that people who have optimized their miners are getting the lion's share. I don't know much about miner optimization, but I am going to start poking at the code to see how these optimizations could be made because I suddenly have motivation! LukeJr, do you have any hints for people getting started on where to look or what to look for? Are you running Linux?
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How can I be sure that it's actually mining? Just by all the cores being at 100%, or the debug window, or some other way? Thanks.
it seems like the easiest way is the first one you mentioned, all of the cores at 100% via task manager. You can also go into debug window and type gethashespersec and if it's higher than 0 you're mining. |
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when does gpu mining come out?
Is this something GPUs are good at? It's fundamentally different from hashcracking It really depends on how well the programmer writes it. One thing that is nice about this coin is that it's making people think. You can't just auto/instamine, people with huge rigs don't have an advantage, cloud instances aren't that great for it, and ancient laptops are finding just as many blocks as current processors. This is a far cry from almost every other alt-coin release out there, in that people are messing around with different compiling options trying to optimize it. It seems like this is how a new crypto launch *should* be. I'm proud to say I was there from the beginning  |
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I'm not sure if 1 XPM/0.01BTC is a fair price or not. The supply is quite limited and seems hard for folks to mine-you can't even mine it with EC2 AFAIK. I think I may hold onto mine and not sell any of them; I'm kind of excited to be in on something that looks quite promising in the very beginning.
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Man, if PrimeCoin managed to punish for using cloud instances and server-class CPUs, that's an incredible feat, must have obfuscated it quite well! Curious to see how this develops.  +1 |
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I'm buying primecoins. Name your price and send me a PM.
I'd consider selling but need to wait for 2721 more blocks before I get my first 20 coins. d'oh! |
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So did anyone get 1000, or is 20.29 the only size anyone has gotten?
here are my block sizes (note this is on a samsung i7 notebook mining):  How do you have so much so fast? is i7 really that much more efficient? There is no way that is one i7. Definitely has a couple CPUs mining my question would be, what is the temps of the cores? No idea what the core temps are. I just did "setgenerate true 8" for both my laptop and desktop, and they each have 122 XPM, or around 240. I assumed everyone had a similar experience... |
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gudmunsn, nice haul.
who knows? I have no idea how this currency will do, and what it will be used for. Maybe it's the next bitcoin, maybe not...? |
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So did anyone get 1000, or is 20.29 the only size anyone has gotten?
here are my block sizes (note this is on a samsung i7 notebook mining): |
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I'm looking for the "/roaming/primecoin/primecoin.conf" so I can add "gen=1" for automatic mining when I reboot the PC. Anyone that know how to do this? I can not find that file...
On windows just do a windowskey-r and type %appdata% and hit enter. Then go into theprimecoin folder. |
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I've been mining since launch on a i7 3770k and an i7 3615QM and I've found 4 blocks. It's not impossible, just takes patience I think.
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I'm pulling 141 primes/sec on each my desktop i7 and my laptop i7, so 282 total. Haven't found any blocks yet, but hopeful.
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be careful. These take 3200 blocks to confirm, so that won't happen for another 3129 blocks...don't get scammed!
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gudmunsn
1NvYL4kbRk8Wdf3beg5xzQ8EsGbB1B2eWb
I have been reading up on folks who started with bitcoin in 2012, 2011, 2010 through old forum posts and it is fascinating. I'm glad you got in on the ground floor.
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