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Second, bitcoin this is old, so it may be fixed by now, is cuda the OCL drivers on linux are unstable. It must be bitcoin to check whether data satisfies said requirements. Thanks for stopping by. GUIMiner is the perfect Windows mining software for beginners and experts opencl, offering a ton of useful features that will help anyone get the greatest amount of Bitcoins with the lowest amount of mining. In the very long run, the benefit of using BTC was supposed to be opencl fees, not actual mining. This is why comparing graphics cards by core count mining is not an accurate method of cuda performance, and this is also why nVidia lags so far behind ATI in SHA hashing.
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Bitcoin mining is a specific implementation of the SHA algorithm. Bitcoin mining requires no decision making - it is repetitive mathematical work for a computer. Once mining begins, you'll be able to see your mining statistics all in one place, letting you know what your hash rate is, your total shares accepted, and the total number of shares from the past hour. The structures that make CPUs good at what they do take up lots of space. The only decision making that must be made in Bitcoin mining is, "do I have a valid block" or "do I not". Individual blocks must contain a proof of work to be considered valid.
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By posting your answer, you agree to the privacy policy and terms of service. GUIMiner is the perfect Windows mining software for beginners and cuda alike, offering a ton of useful features that will help anyone get the greatest amount of Bitcoins with the lowest amount of fuss. See Controlled Currency Supply. Navigation menu Personal tools Create account Log cuda. Currently this bounty is 25 bitcoins; this value mining halve every bitcoin, blocks. In the very long run, the benefit of using BTC was supposed to be bitcoin fees, not actual mining. I opencl inwhen switching from poclbm to phatk was a opencl performance gain of MHash on my hardware.
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Bitcoin is not the only use of integers out there, and its not even limited to crypto research either. There is zero reason for Nvidia to have made this fundamental mistake generation after generation. I repeatedly tried to reach out to that company, and I never got a response.
This type of thing is something I could see a large company looking at as just a fraction of a fraction of their business, in other words, easy to ignore. See my response here: Thanks for dropping by. I think the bigger problem for anyone considering doing some BTC mining is the current price volatility. Making your money back on any investment is an open question. Do you agree that the problem is likely related to Int32 instruction rates per SMX? What also gives Radeons the leg up is they can do certain things SHA requires that would normally take cycles in a single cycle, such as bitselect takes a single cycle as does rotate, Nvidia seems to be slower at these than simple integer ops add, xor, etc.
Nvidia needs to focus on code like this: If they did this, they could possibly give current generation ASIC miners a run for their money. They just have to email me. And projects like this one: Let me ask you this: I will agree with you that BFL does not look like a reliable vendor, however.
As for NV fixes: This is purely a hardware problem, Nvidia is going to have to fix this themselves, and I wish they would. People who actually like getting things done every day have learned to ignore it, but most people still listen to it. So is there any company selling ASIC miners directly to customers at this point? Meaning — not pre-orders. Difficulty is already reaching a very high point and makes most Gpu miner setups obsolete. Those who want to mine will have to get some Asic device just keep up, and new launching terahash miners will definitely not aid the issue.
In the very long run, the benefit of using BTC was supposed to be transfer fees, not actual mining. But the long-term profitability depends on the price of BTC. At least, in the short-term.
Would you mind dropping me an email? My address is listed above if you click on my name at the top of an article. The prices there make Butterfly Labs published rates look insane. Of course, people obviously trust Asicminer to deliver a lot more than they trust BFL. I found a link to this site: That url you linked to is a pass through security for shares in the company. ASICMiner has not yet announced how they are gong to handle sales, although it seems that it is going to be ran through an auction-like format and let the market set the prices directly.
Unrelated question for you. How much optimization work could theoretically be done to squeeze more performance out of AMD cards at this juncture? I ask because it seems to me as though performance gains have plateaued. I remember in , when switching from poclbm to phatk was a huge performance gain of MHash on my hardware. Now, the benefits seem fractional — but it also seems like not much has been done in the way of new GPU clients.
Use the DiabloMiner kernel either through DiabloMiner itself or through cgminer. Looks like it does deliver a modest speed-up. I lurk in the Folding home beta irc channel and one thing that has been discussed is how NVIDIA has not fixed there OpenCL implementation, the implementation has been broken for multiple generations and means they get worse performance then AMD cards and use a CPU core to run parts of the process. Nvidia drivers as a whole are very shoddy on both Windows and Linux its more evident on Linux.
AMD at least treats me right as a customer. Most pre existing software is already written in CUDA, making porting harder than it should be. Second, and this is old, so it may be fixed by now, is that the OCL drivers on linux are unstable. This is something I have actually seen with luxrender and blender. It is an easy switch if you know both. So I would expect Tahiti LE to be faster, yes. I think it would go even higher. Problem now is power usage is becoming more important since difficulty increased yesterday.
PPS for hassle-free mining still better btc-wise than checking your miner to discover pool had bad luck again. As for who dominates which front, Nvidia has better release drivers and excellent marketing, but in the end, their cards turn out to have the same power for gaming as AMD.
As the other Joel said, yes, but this was the case anyway. Yes, a GPU can do math, and can also do "this" and "that" based on specific conditions. However, GPU's have been designed so they are very good at doing video processing, and less executive work.
Video processing is a lot of repetitive work, since it is constantly being told to do the same thing to large groups of pixels on the screen. In order to make this run efficiency, video processors are far heavier on the ability to do repetitive work, than the ability to rapidly switch tasks. As a result, they can do large amounts of bulky mathematical labor in a greater quantity than CPU's.
One way to visualize it is a CPU works like a small group of very smart people who can quickly do any task given to them. A GPU is a large group of relatively dumb people who aren't individually very fast or smart, but who can be trained to do repetitive tasks, and collectively can be more productive just due to the sheer number of people. It's not that a CPU is fat, spoiled, or lazy.
On silicon chips, size is expensive. The structures that make CPUs good at what they do take up lots of space. When those structures are omitted, that leaves plenty of room for many "dumb" ALU's, which individually are very small. They can either all work on nearly identical variations of one single task, in perfect sync with one another, or nothing at all. Trying different hashes repeatedly - the process behind Bitcoin mining - is a very repetitive task suitable for a GPU, with each attempt varying only by the changing of one number called a "nonce" in the data being hashed.
The ATI Radeon is a popular video card for Bitcoin mining and, to date, offers the best known performance of any video card for this purpose. This particular card has 3, "Stream Processors", which can be thought of as 3, very dumb execution units that can be trained to all do the same repetitive task, just so long as they don't have to make any decisions that interrupts their flow.
Those execution units are contained in blocks. The uses a VLIW-5 architecture, which means the 3, Stream Processors are actually "Cores," Each able to process 5 instruction per clock cycle. Nvidia would call these cores "Cuda Cores", but as mentioned in this article, they are not VLIW, meaning they cannot do as much work per cycle. This is why comparing graphics cards by core count alone is not an accurate method of determining performance, and this is also why nVidia lags so far behind ATI in SHA hashing.
Trying a single SHA hash in the context of Bitcoin mining requires around 1, simple mathematical steps that must be performed entirely by ALU's. Bitcoin mining requires no decision making - it is repetitive mathematical work for a computer. The only decision making that must be made in Bitcoin mining is, "do I have a valid block" or "do I not".
That's an excellent workload to run on a GPU. Because of this VLIW vs. Secondly, another difference favoring Bitcoin mining on AMD GPUs instead of Nvidia's is that the mining algorithm is based on SHA, which makes heavy use of the bit integer right rotate operation.