Bitcoin mining xeon phi
Briguy37 3 What mining performance can we roughly expect from the Intel SHA extensions of the upcoming Skylake processor architecture? Let's try to make a rough estimate. Intel's article Intel SHA Extensions gives some details on these instructions as well as sample code. The main feature is the sharnds2 instruction, which performs two rounds of SHA, out of the 64 rounds that are needed to hash one byte block. A Bitcoin header is 80 bytes long, so that's 2 blocks, and because How to tell bitcoind to use more memory and CPU.
It will by default use all CPU cores available. Pieter Wuille 40k 2 76 Running a command line bitcoin CPU miner on ubuntu for slush's pool. I suggest to use one of the updated cpuminer versions which support more than one algorithm. This way you are also set up to mine different coins which use other PoW functions. The most versatile one is tpruvot's fork: For me this one worked out of the box on a recent Ubuntu The syntax is similar to all other cpuminer Your best bet with a GPU is to mine scrypt coins.
If you want the resulting payout to be in bitcoin, try using mining on a multi-pool like middlecoin. That pool automatically chooses the most profitable scrypt-based coin to mine and pays out daily in bitcoin.
I have 4 s pointing at middlecoin and make between. Ed Manet 4. Does CPU mining become efficient as memory requirements increase? Suppose the memory requirements were raised to 4 GB. Tony 5 Is it possible to win the Bitcoin lottery? Yes, it's possible to solo-mine using your PC. The odds are astronomically small, however. You can look up what hash rate your CPU will get here. So every block, you have a 0. You'll find one block every 76, Jimmy Song 6, 8 For Litecoin, if memory size is increased in processing the Scrypt algorithm, for example to kB instead of kB No, it works the opposite.
If you increase memory, which is used by the scrypt to generate a single hash, the time it takes to Optimal Number of Threads. One instance of minerd is all you're going to need. The application also synchronizes with the pool.
So opening more than 1 instance of minerd is just going to cause your network to be used twice for the same information. Also, the operating system has some overhead for running the application. Opening another instance will mean more overhead and thus less Mr Jones 2 How can i set up CPU mining on bfgminer? You can run a miner on a CPU, you just won't generate any measurable revenue. But as an experiment, it's certainly possible to do. I run cgminer on a CPU as an integration test for one of my node.
This is a rough outline of the steps you can go through to install an older, CPU-supported version of cgminer on your computer: Travis Webb 1 2. Mining with a CPU is just not a sensible way to get bitcoins. Basically, you earn bitcoins the same way you earn any other currency.
You earn dollars by finding people who have dollars and offering them products, services, or items in exchange for those dollars. It's the same thing with bitcoins. Find people who have bitcoins and offer them something in Maybe not exactly what you are asking for but CoinLab have a mining pool that intends to use the computing power of their members for jobs other than hashing.
From the Bitcoin talk forum topic: The normal bitcoin client should not use more than a few percentages, if not even zero, from your CPU.
What client are you running? Did you ever enabled the "generate bitcoins" option? I'm not sure if it's in the Bitcoin-Qt client's settings, but you could've enabled it in your bitcoin. Maybe you should post your bitcoin Steven Roose 8, 7 29 Mining computations by the numbers [duplicate]. When mining, you computer creates hashes. These hashes must satisfy a certain condition. All a miner does is trying many many times to find a valid hash for a block.
It is good to know Is mining bad for the CPU? Its mostly the heat And tons and tons of interesting comments on questions, on both the blog and reddit. This latter question is what this post will be about. In terms of mining software, lukMiner will run on them, and will run rather profitably. Once you get both hardware and MPSS stack up, you copy luk-xmr-phi to the card, and run it; so that part is easy.
Now to the tricky question: How to actually build a rig with these cards. The build I used in my original post is a professional, off-the-shelf server from Exxact Corp. I used theirs because I know they had listed this product with Phis in the summer, so had pretty high confidence that would still work. For those interested in more details: The careful reader will have seen that I mentioned ten PCI slots, yet my build uses only eight cards.
Yes, I did fit 10 cards in there, but ran into some issues. And finally, when I did get it to boot the machine became unstable with 10 cards — maybe bec. Here a pic with 10 cards, but again, right now I only run eight. Finally found one of my machines that took that card, and for everybody that wants to replicate, here the specs:. At first, I added this semi-professional Lasko fan:.
Eventually, however, that setup looked a bit shaky even by my standards, so went ahead and scouted for some smaller fans to cool this. Eventually, however, I found some higher-powered fans on ebay see, for example, here for a listing. Oh, and of course: That stuff connected to a 15V molex. With that, the machine is now up and running for three weeks, no issues whatsoever well, had to fix a few issues with hung nicehash connections in the miner, but the hardware works all right.
Anyway — for those that have some of those cards I hope this info will at least open a path to getting them up and running. To learn more about me, look at the "About" page on http: Is it possible to get a xeon phi x coprocessor and vegas running in the same machine? On which part are you getting stuck? Tried all kind of drivers, from amdgpu Looks like the s are not coprocessors, but the main CPUs. Will send a post once I know more…. The first version of the miner was for regular CPUs, but I always wanted to figure out how good the Phi would be for mining, and eventually just sat down when I had a lot of spare time in my sabbatical and did it.
I bought this one:. I agree, they can be used in a 1U rack, I have several mounted in the Dell C You need something more modern with a C or C chipset and bios support for large addresses. As a acknowledgely extreme example: I even recently put two cards into an old pre-sandybridge Xeon system, and it works just fine…. More like a hit and miss situation.
That particular machine has risers with which the cards are then flat on their side, which works just fine in a 1U system. Had the same on some x based system, too. Oh; yeah, fully agree. I do not know for sure. Yes, from the numbers on ark. I can start lukminer and start mining, however, I see a few warnings.
I appreciate if you can help me on those and as well as one or two other things: Is it a generic warning, or intended to be displayed for regular phi systems, or is it also applicable for phi coprocessors as well? Does it make a difference? Or should I just use ? Do you have a more recent example config that I can use as a reference? Well I think I asked a bit much but whenever, or if ever, you have time to answer, I appreciate it.
For centos it does, which is why i changed the output to that. Thanks for your quick response. As per hash rate, from time to time I see H but it usually is around Hish. Your share rate goes above 4. Yep, indeed I was lucky.