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Seconded.
If the whole thing is already public I would like it to be openly discussed... as much as discussing an historical legacy makes sense.
Even better if it could be traced in commits.
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I agree.
7000 series while still very relevant for gaming (especially on budget) have a serious problem: their model number is ... two years old? Maybe even three. Do not buy. Sell asap if you already have one as a new model will be out in a couple of months (actually sooner AFAIK, but availability is a big question).
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What is difference between intensity and xintensity?
You can't use both in the same instance, it will likely default to intensity. xintensity is number of shaders x _value of xintensity_Since an user asked me the very same thing I actually had to look at sgminer again. It turns out there are two formulations which are selected on a per-algorithm basis. glob_thread_count = clState->compute_shaders * ((cgpu->algorithm.xintensity_shift)?(1UL << (cgpu->algorithm.xintensity_shift + cgpu->xintensity)):cgpu->xintensity);
Which means: it's always shaders * something where something is (usually?) the specified xintensity value (I don't remember the actual xintensity_shift values). Otherwise something will be determined as usual intensity, which could be considered 2^x in layman terms. Both formulations allow much finer control than regular intensity. |
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There are some ignorantly constructed mining things which try to use the for humans 'difficulty' number for actual important usage. There be dragons. (Among other things, errors related converting block hashes to 'effective difficulty' have been blamed for miners discarding valid blocks in the past).
...
It is my understanding difficulty is "the number of bits in the resulting hash". This is a very nice and fairly defined number in my opinion.
Thats not correct, nor would it be very useful: if it was a straight leading zero bit check difficulty could only change in huge doubling/halving increments which could not adequately control the rate of blocks.
Yeah, I guess mine is one of those thingies  I'm not sure how could I manage to miss this so long... is it just me or this sounds like I can just memcmp it against hash? I assume the situation at network level is really etter defined in that regard. Between stratum and the pool operators manipulating difficulty multipliers I am very confused. It seems you are assuming that "difficulty" is primative and that things like "target" are calculated from it. In fact, target is primative and it is the compact form of target, called the "bits" field which is changed by the protocol every 2 weeks and is stored in the header of every block. As gmaxwell said, "difficult" is just for the humans. It is the only thing I get from stratum servers (let me tell you I don't have high regard for protocol). I can indeed see some computations I am familiar with. I would probably have to really consolidate this information. |
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CryptoJames what you think about low power and low cost miner?
I'm actually making some test with M7M algo used by Magi Coin with my Raspberry Pi 2, and i've some idea. Chiming in. Yescrypt as employed by GBSTY is basically split in two parts from a performance standpoint (they take about 50% each of CPU time on my system). The first is mathematically intensive and possibly not very nice to map on low-power systems. The second (the wide parallel transform which provides the high GPU and ASIC resistance) takes two memory accesses for each operation, where operation is a simple add. We know from application of ARM processors in big server farms they are competitive when it comes to this kind of operation so I think it's a very nice idea. |
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First, this was conceived as a community coin - with the hope of bringing in development from parent coins. If there is a feature that you want - develop it. If you can't cut code yourself, post the idea here (and perhaps with a bounty?) and maybe someone else will work with you. I'll be happy to pull in any (sane!) changes to the wallet source that others develop. As far as I understand MYR basically sponsored the creation of UIS by having a bounty for a fully aux-mined coin. Maybe worth stressing this. It was born as a technical experiment and lives as community experiment. Just to be clear, I like the idea. |
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Foreword: I'm not truly sure how difficulty works in BTC at network level. This stems mainly from my work at stratum level so I'm not sure it's supposed to be there but this is perhaps the only section in the forum where I have a chance at getting some real solid information.
It is my understanding difficulty is "the number of bits in the resulting hash". This is a very nice and fairly defined number in my opinion.
For some reason I never fully understood however it is often expressed in float, with the ability of represent really big numbers. I think this was due to the better ability of give an idea of how many tests to perform on average to find a solution while the bit count thing would be non linear in nature. It's not like I consider <big number> particularly expressive either.
I assume I miss something with the truediffone constant and the various multiplications leading to the target bits.
Why was the floating number representation preferred?
Further elaborations on the subject are welcome.
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 Anyway, now OP has a budget and wants to go ASIC, I'd call myself out.
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Very cheap for you enthusiasts maybe. For non-enthusiasts a cheap card is 50 bucks. Midrange 80, High-end 100, 120 if we want to go overkill. Not to mention always the same thing: if it's for mining, it's trashing money. If for learning, better to upgrade the whole system.
you can find it for 50 buck even new lol 750ti is very cheap Link please. Here's what I can get for for 50 bucks from my favourite etailer: ASUS nVidia GeForce GT 730 903Mhz 1Gib GDDR3. 64 bit bus. That's sure going to be very similar in performance. No trace of those on amazon.co.uk, but I'm sure I suck at it. |
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I never got any of this Friday 13th thing but the restaurant reservation things sounds much more valuable than most advices on this forum. (meh?)  |
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Very cheap for you enthusiasts maybe. For non-enthusiasts a cheap card is 50 bucks. Midrange 80, High-end 100, 120 if we want to go overkill. Not to mention always the same thing: if it's for mining, it's trashing money. If for learning, better to upgrade the whole system.
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Btw., I'm playing The Talos Principle, very good and interesting logical game. Who loves this genre, go for it.
Emphasis added for you, it should get more buzz. |
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nvida geforce 9200  The 9200 was an absolutely bleak card, even in the age gen 9000 cards were state of the art. It is a low-power, low-cost design, even by integrated GPU standards of the time (I think there was a 9120 which is even smaller). I'd say it's doing an awesome job considering its age! is is ther a way to get more cores running ? if i provide a pic can anyone help me out why does it say gpu 0: It's ok. It's the first GPU in your system, counting from 0. It's not the number of cores. As a side note, many computers equipped with such cards often feature a way more powerful processor. No, you cannot get more cores. em i just waisting my time trying to mine with big small hardware? (corrected that for you). Yes. It's not even worth for learning purposes as the dynamics are screwed. Leaving aside that scrypt is dead for amateurs, you need to get at least 50x more performance. Those cards could be around 75 bucks but I honestly don't suggest to buy one and I don't think you can mount one anyway. |
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the mining works great first 5 minutes, but when they start to rejected after all are rejected, it is as if he stayed without measuring difficulty. Now I'm in mining pool, I can do more tests when you want or need, I subscribe to your git and receipt by email every move   Very interesting. Another suspect I have is the target difficulty calculation might be off. This is another thing I'm going to test. Thank you very much. If you could make it work like you have defined using of GPU/CPU processors, like 20%, 30%, 40%, 50% (so we can use it in game depends of game hardness - to use 20,30,40,50% of processing power) then it will be possible to play games and mine simultaneously. And of course those freshcoins would be in game instantly! It is already possible by intensity! I can play Qbeh-1 at 50+ fps while mining neoscrypt (60+ while not mining)! Simple games are most likely bandwidth bound, no need to save on compute. Besides, just pull down intensity. GPUs have superior threading capabilities. |
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Of course we need to make dedicated software for all platforms...which will not use 100% of CPU/GPU power, but less.
The point I'm trying to get across is that you don't need to dumb down the miner. Both sgminer and M8M work at "full speed" but they give very different results in terms of framerate loss. A future version will implement a work dispatch method taken from games. I expect this to reduce the framerate loss even further. Not that this is a problem now, but game can get some hiccups. Someone is testing the "mod" version of MAX in Supra-fresh. This Mod is not efficient for the moment  , causes many rejections apparently a calculation of the difference that is not supported in MPOS correctly. That's most likely not a problem with MPOS by itself but rather some pools where share difficulty is premultiplied by a pool-specific term. This problem has been signaled multiple times, I attempted to fix it already twice but always seems to come back relating to high hash miners so odds are I cannot reproduce. I have a suspect and I am thinking about a more exhaustive test. Shall this fail to signal mismatches, I will have to mark this as wontfix. In the meanwhile, next version will detect mis-compiled kernels so hopefully we can separate those two problems. I'm even thinking about integrating unit tests in the executable itself so this can be detected before we trash useful work. I have tried it but didn't know to start mining...if max make it right we could award him as community because we could implemeent that miner into games if it is optimized.
First run & configuration. Keep in mind documentation is updated sporadically as I have no point in do so before the system is finalized. |
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I was slacking around and I was thinking about trying this out. I noticed there are only an handful pools. Besides 1GH the others seem to be rather small... either everyone is solo mining this or I'm missing something.
Any news of an open AMD miner BTW? I think this is holding back.
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Yes that is why we will have option mine till play in games Not with sgminer though, that thing kills my framerate. It goes like 60->18 fps, no go. |
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Not directly related to FRESH... but quite related since this is supposed to be gamer oriented and Frangomel asked me about interaction between gaming and mining workloads...
It turns out I can mine FRESH with basically no performance loss while playing a small game. We're talking about going 60->55 fps so that's like WOW.
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Vertcoin is still heavily undervaluated, I believe we will take one day LTCs place. Slowly but firmly.
No way dude! LTC is BTC shadow. I don't want VTC to become like LTC, it sux LOL. As successful as LTC maybe I could understand |
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Have you checked the predicted balance on pool page? Does it even report something for your wallet?
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