A Raspberry Pi is a credit card sized $25 (or $45, for the deluxe option) laptop, designed for educational use. Has anyone attempted running mining software on it? If so, what’s the hashrate like? (evidently the CPU is approximately omschrijving to a P2 300MHz – I know the hashrate will be very low!)
Also, can the GPU be used to mine? What’s the hashrate for that, if it’s bot done.
From the FAQ on the above linked webpagina: “The GPU provides Open GL ES Two.0, hardware-accelerated OpenVG, and 1080p30 H.264 high-profile decode. The GPU is capable of 1Gpixel/s, 1.5Gtexel/s or 24 GFLOPs of general purpose compute and features a bunch of texture filtering and DMA infrastructure. That is, graphics capabilities are toughly omschrijving to Xbox 1 level of vertoning. Overall real world spectacle is something like a 300MHz Pentium Two, only with much, much swankier graphics.”
Note: The price of $25 or $45 excludes a way of powering it (via MicroUSB), a keyboard, a mouse and likely a USB hub. I think you need to provide an SD card too.
The raspberry pi is listed by its processor te the arm section: ARM1176JZ(F)-S. It gets 0.Two Mhash/s when clocked at 800 MHz.
The Raspberry Pi uses the VideoCore IV series of GPU, which to my understanding are either a single or dual core GPU running at or around 700 MHz. Since the primary benefit of GPU mining is that you can run many parallel processes on the hundreds of cores typically found te most GPUs, the single-core nature of the VideoCore GPU undoes most of that benefit.
I don’t have precies numbers, strafgevangenis the necessary skill to compute an estimate, but I can tell you that the [email protected] folks already discussed this and came to the conclusion that an AMD Phenom II X4 940 wasgoed almost Five times spil efficient for their needs spil utilizing both the CPU and GPU of the Raspberry Pi. Since the needs of [email protected] are very similar (but not identical) to Bitcoin’s, it’s very likely not a spread to say that if CPU mining (admittedly with a fairly nice CPU) is 5x more efficient, the Raspberry Pi doesn’t look like a strong contender.
Of course, until wij have solid MH/s and actual at-the-wall wattage numbers it’s very difficult to say if, at scale, a cluster of $35 Raspberry Pis could rival with other setups on initial price or power cost. Personally, I’d guess not.
The one thing I should most likely reaction on is about the difference inbetween OpenGL / OpenGL-ES and OpenCL. Both OpenGL and OpenCl can be used for SHA256d hashing, but OpenCl is used much more frequently.
Where spil GL means Graphics Language and CL stands for Compute Language. GL is for graphics and CL is for mathematical and scientific calculations. While your system may have OpenGL support of some sort, it’s more than likely doesn’t have OpenCL 1 &, Two support for the GP-GPU (VideoCore IV) which would permit you to get okay to medium hash rates. Spil I see to reminisce, the VideoCore IV ter the Pi doesn’t support it te hardware (OpenCL version 1 or Two).
Which means you’d have to rely on those ASIC miners that are connected via the USB port hub or even a dedicated mining equipment that is connected via the UTP network connector (RJ-45 jack / Ethernet).
Well, at least wij’re having a good amount of information / gegevens coming out so the next people that read this will have a good idea on what to do with their RPIs if they want to do any mining.
I will step up and reaction the Raspberry Pi question too. The RPI ter and of itself is not worth using to do virtual currency mining on by itself. However, if you a nice powered USB hub and connect te the ASICs that ass-plug te via the USB ports and download the decent software that can access thesis devices, then you’ve got a descent mining equipment to speak of.
Due to the way ter which the ASICs are designed, they can only do SHA256D and that alone albeit, spectacle vanaf watt is the best way to go. Essentially, all the RPI does is act spil the surrogate for all the ASIC sub units and permanently feeds them gegevens and ferries the gegevens hashes back and forward from their source.
You can’t use Scrypt with thesis USB ASICs at all. You’ll be stuck using the GETWORK protocol until someone can come up with an ASIC that can do both SHA256D and Scrypt.
One last thing, you may have heard of the Stratum protocol vs. the old GETWORK protocol. This can be used with Scrypt or SHA256D algorithms. Stratum helps you get less stale and has even better network voorstelling than the old protocol.
Hope this clears things up like my message above.
I dont think you will find a Pi economic for ‘mining’, ASICs have far higher hashes vanaf watt. However if you waterput a Proof of Stake coin on your Pi you can get excellent ROI depending on the price of the coin and the prize structure.
PoS uses 1 hash vanaf 2nd vanaf UTXO, so even a lowly Pi Zero for $8 can lightly run a PoS coin from a hashing perspective (I stake Pinkcoin on mine). The other consideration with PoS and SBCs is RAM, longer chains need to stream more into RAM (I believe its the chain index), so for chains with overheen a million blocks Id recommend a Pi2 or Three, much overheen Two million you prpbably need to look into an SBC with higher RAM, like a Rock64.
Do you even know what FLOPS are, very first off?
FLOPS stands for FLoating-point OPerations vanaf 2nd. Hashes are calculated via signed integers ter the form of hexadecimal numbers, those numbers are then run through a series of logical operations (You know, AND, OR, Strafgevangenis, XOR, NAND).
FLOPS means absolutely jack when it comes to your processing speed of your Hash Bashing equipment (your crypto-currency mining pc).
ATI cards are known for their single-precision floating point voorstelling overheen Nvidia, that much is true.
ATI also has better signed and unsigned rechtschapen spectacle than Nvidia does too.
ATI has slightly better logical operations vanaf 2nd than Nvidia does.
Now, floating point is screaming prompt on the ATIs spil compared to the Nvidia but it’s too bad it’s not actually being used for SHA256D and Scrypt.
Integers both signed and unsigned actually take less time on the CPU or GP-GPU to calculate and thus much swifter.
The logical operations are the slowest and since you use a combination of both logical and unsigned rechtschapen you get a composite average of the voorstelling inbetween the two and of course the implementation of the mining application.
If it’s done correctly, you should get around 85 to 90% maximum of what your card or embedded system claims it’s capable of doing. Simply waterput, you will never achieve 100% because you have an operating system that is using the card and of course interfacing to the surplus of the system.
While the indicators tell you are getting 100% of the cores, what it’s indeed means is that you are getting 100% of the 85
90% theoretical maximum you can achieve with the hardware you have.