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Apr 24, 2013 - Bitcoin Mining on Mac OS X – cgminer & bfgminer. Xcode on App Store. Command Line Tools Next you'll need the Xcode Command Line Tools. Launch Xcode. Cgminer -o -u username -p password. Already downloaded: /Library/Caches/Homebrew/cgminer-3.1.0.tar.gz ==>.

In my previous in this series I introduced two easy-to-use bitcoin miners for OS X:. However, while these miners are relatively easy to install and use, they do not offer the best performance when it comes to hash rates. For that you’ll want to look at cgminer and bfgminer. These are native C miners and, paired with the right kernels, their performance exceeds the other two miners by quite a wide margin.

Bitcoin

Cgminer & bfgminer The project is a fork of the project. Now, I have no dog in this fight, but my understanding is that the teams aren’t on great terms. However, I have had good luck with both tools and have worked with both authors in order to fix a crash (, ) related to multiple GPU’s on OS X and have no complaints whatsoever. Both miners offer similar performance in my experience. Installation 1. Xcode To get started, you will need to install the.

Xcode is a free download from the Apple App Store. Command Line Tools Next you’ll need the Xcode Command Line Tools.

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Launch Xcode and then click the XcodePreferences menu item. Click the Downloads tab and then click Install next to Command Line Tools.

If the text next to Xcode Command Line Tools says Installed, carry on to the next step. Homebrew Next you’ll need to install.

Homebrew is a package manager for OS X that provides a sane way of installing.nix tools, libraries, and their dependencies. It is similar to MacPorts for OS X or apt for Linux. Installing Homebrew is super-easy.

Open up Terminal.app and run the following command (from the Homebrew ): ruby -e '$(curl -fsSL After you install Homebrew, make sure you run the following command (as the installer should instruct you): brew doctor Make sure you address any errors or warnings before proceeding as they may prevent the miners from installing. Miners In my I indicated that it was necessary to compile cgminer and bfgminer from their source code in order to install them on OS X. While that was necessary at the time, after some reading and experimenting with Homebrew I was able to create packages (called with Homebrew) for installing cgminer and bfgminer on OS X 10.8. Once Homebrew is successfully installed, you can run the following commands to install cgminer and bfgminer: brew tap nwoolls/xgminer brew install cgminer or: brew tap nwoolls/xgminer brew install bfgminer If you specify the –HEAD (two dashes) parameter for brew install then the latest source-code will be pulled for the miner from Github rather than using the latest official release. You can visit the Github to view the package contents. If you run into errors installing the above formulas you can try running brew install with the –debug –verbose parameters to find where things went wrong.

Mac

I’d also recommend using brew doctor to diagnose any issues. Usage Both cgminer and bfgminer are command-line utilities. You can either run them without any command line parameters and fill in the prompts for mining pool URL and credentials or you can use the following format to specify your pool: cgminer -o -u username -p password or: bfgminer -o -u password -p password If you have multiple graphics cards you’ll want to use the –no-opencl-binaries parameter with bfgminer to avoid a crash on startup. Propresenter 6 serial number is hereditary. This is not necessary with cgminer as it detects OS X and applies the same workaround automatically. Other notable command line parameters are -I (for intensity) and -k (for kernel).

If you pass in -I d then the miner will use less resources so you can use your PC (think D for Desktop). Passing in -I 9 is a safe value for having the miner use as much of your graphics resources as possible to mine.

Your PC will be much less responsive. Finally, -k lets you specify a kernel. I find on OS X that using -k diablo gives the best performance. So, my command-line using cgminer with the BitMinter pool would look something like this: cgminer -k diablo -o -u usernameworkername -p password -I 9 And for bfgminer: bfgminer -k diablo -o -u usernameworkername -p password -I 9 -no-opencl-binaries Refer to the projects on Github for full documentation of the available command-line parameters.

As you can see from the average in the upper-left of each miner’s output, with cgminer and bfgminer I average 460 Mh/s. Compare that to 400 Mh/s with GUIMiner and 370 Mh/s with BitMinter and you can see why these command-line miners are preferred over their GUI counterparts. Conclusion These are exciting times for crypto currency, whether you’re a geek or a speculator or merely a bystander. And, while OS X is pulling up the rear when it comes to supported OS’s for bitcoin mining, hopefully I’ve demonstrated some viable options for getting your feet wet with mining on OS X. BitMinter is a great option for getting started, as it gives you both a bitcoin mining pool with low fees and ready-to-use mining software.

GUIMiner is a nice option for improved performance and flexibility in mining pool choice. And, if you’ve decided mining is your thing and you want the absolute best performance out of your rig, you can’t go wrong with cgminer or bfgminer. UPDATE #1: Since my original post I’ve had some great help from Bitcoin community member and blogger on how to get binaries such as cgminer and bfgminer packaged in a self-contained way. If you are interested in the shell scripts that make this possible you can check them out on Github.

I have submitted these scripts to the authors of both cgminer and bfgminer so, in the future, we may see official OS X binary distributions. In the meantime, if you’d like to try these out instead of following the instructions above, you can download them from the Releases page. UPDATE #2: Starting with version 3.8 cgminer no longer includes any support for GPU mining, so you will need to use version 3.7.2 of cgminer if you intend to mine using your GPU. Additionally, bfgminer now requires an additional argument in order to enable GPU mining. If you wish to use bfgminer for GPU mining you will need to add the following argument: -S opencl:auto.

↓. first off thank you for the great tutorials for mining LTC and BTC.been consumed the past week figuring it out and still running into errors on osx Lion when trying to install Cgminer and BFGMiner. ↓.

pete Hi, i have a mid 2010 iMac with ATI Radeon HD 5750 1024 MB, running Mac OSX 10.8.3 with 16GB ram i have successfully installed from your brew package as instructed, and i get the same error that i was getting when i compiled cgminer from source. As far as I can tell it is something to do with the OpenCl Framework Library I have – unusually.

I have an older iMac using the same version of OSX, and the same version of XCode at home, and i can get that to run! Uname -a Darwin 12.3.0 Darwin Kernel Version 12.3.0: Sun Jan 6 22:37:10 PST 2013; root:xnu-2050.22.131/RELEASEX8664 x8664 here is the relevant error message: 2013-05-20 15:45:08 Probing for an alive pool 2013-05-20 15:45:09 Error -11: Building Program (clBuildProgram) 2013-05-20 15:45:09:51:16: error: attribute requires exactly 3 arguments attribute((reqdworkgroupsize(WORKSIZE, 1, 1))) ^ 2013-05-20 15:45:09 Failed to init GPU thread 0, disabling device 0 2013-05-20 15:45:09 Restarting the GPU from the menu will not fix this. 2013-05-20 15:45:09 Try restarting BFGMiner. Press enter to continue: Thanks!

↓. thehwood Pete, From reading the error message it sounds like you’re not using all the the “arguments” needed to execute the “attribute” “You can either run them without any command line parameters and fill in the prompts for mining pool URL and credentials or you can use the following format to specify your pool: cgminer -o -u username -p password bfgminer -o -u password -p password If you have multiple graphics cards you’ll want to use the –no-opencl-binaries parameter with bfgminer to avoid a crash on startup. This is not necessary with cgminer as it detects OS X and applies the same workaround automatically.” Either just put in “cgminer” or if you’re using attributes you need “cgminer -o -u -p ”. ↓. Al I read this in the cgminer README: Any thoughts?

Is this reality for OSX? Q: Can I mine with cgminer on a MAC? A: cgminer will compile on OSX, but the performance of GPU mining is compromised due to the opencl implementation on OSX, there is no temperature or fanspeed monitoring, and the cooling design of most MACs, despite having powerful GPUs, will usually not cope with constant usage leading to a high risk of thermal damage. It is highly recommended not to mine on a MAC unless it is to a USB device. ↓. Here are my thoughts. First of all, I have used the same Mac Pro to mine under both Windows and OS X.

There is no speed difference with the Open CL implementations. It is true that there is no temperature monitoring and that you cannot overclock and tweak the GPUs under OS X. If you get into mining and like it, I’d suggest building a dedicated Windows mining rig. As far as the cooling design, it really depends on the model you are using. I have a Mac Pro with a regular case design so that’s not an issue for me. I wouldn’t personally GPU mine on a Mac laptop 24×7. Finally, with ASICs becoming more popular, these can be used on a Mac just like on a Windows PC without any of the above limitations or considerations.

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↓. nOOn Hello Nathan, I thought I had missed some something with the newest installation of cgminer I made, because I got only errors: AMU 0 TIME OUT So I reinstalled my OSX. Nothing better. But 3.3.1 was working! So I finally ended on the main forum talking about Mr. Olivas ‘ program, I found this from himself: “Request from me to anyone having trouble with ICA or AMU devices on linux with the latest cgminer.

Firstly, I’ve written a standalone program, that’s all the necessary code from cgminer (with lots of changes and added code) to test libusb on anyone’s linux It’s here: It has instructions in the top how to compile it. Running it will simply show you if the version of libusb on your linux is problematic but of course only if you have 2 or more ICA or AMUs If anyone does this could they report 4 things in a pastebin or similar link (pastebin is here: ) Report their hardware (e.g. An intel/amd desktop, an RPi, or some other such description) Report their linux verion with uname -srvmpio Report their libusb version e.g. RPM based system: rpm -qva grep libusb APT based system: apt-cache policy libusb-1.0 egrep “^l Install” Pacman system: pacman -Q grep libusb Report their libusb libraries e.g. Maybe something like: ls -las /lib./libusb. /usr/lib./libusb.

and finally the output of running./usbfail You may need to run it a few times – basically what’s of interest is the most common result running it. ↓. Sandy Hi, I followed all the steps and installed cgminer, bfgminer successfully but on running final command cgminer -o stratum+tcp://mine-pool.net:3400 -u idime.1d -p 1d. ButI am getting ‘No device detected!’ with cgminer and ‘NO DEVICE FOUND: press ‘M’ and ‘+’ to add with bfgminer. I am using Macbook Pro with Maverick 10.9.1, Intel i5 processor and Intel HD Graphics 3000 card on it. I can mine successfully with CPUminer but getting ‘No Device found’ with cgminer 3.8.2 /bfgminer 3.10.0.

Please advice! ↓. Bruno Trentini Hello Nate, Thanks for your response: following your advice, I’ll continue to mine litecoins with GPU using bfgminer (and not cgminer). I’m using bfgminer also with some Twinfury to mine bitcoins. I have this problem. I start bfgminer for bitcoin with this line from a shell: bfgminer -S twinfury:all -o stratum+tcp://stratum.bitcoin.cz:3333 -u username -p password and bfgminer for litecoin with this line from another shell: bfgminer –scrypt -o eu.ltcrabbit.com:3333 -u username -p password -S opencl:auto -I 12 -w 64 If I start only bfgminer with the second shell, I see that also the Twinfury units are working. This doesn’t happen if i start the second shell after the first one, but if I fill all the USB ports of my Mac with the Twinfury units, the IO fan goes revving (with the sensation that my Mac is going to blow).

So I have the impression that I’m doing something wrong. Can I tell bfgminer to mine litecoin using only the GPU? And is it possible start both the mining activities with a single line and a single shell? Thanks a lot for your kind attention. Best regards, Bruno.

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Runnig at 100% CPU and GPU load of other computers on pear, this Bitcoin hack tool can generate more then 1BTC per day (720$ as of writing this) with average This hack tool can run on and low end or high end computer. You can either store your wallet locally or store it online. Is an online wallet that is surprisingly simple to set up. Wallets require you to use or download a fairly large blockchain file – about 6GB – so downloading and updating a local wallet may be a non-starter.

Like all wealth storage mediums, keeping your bitcoins “local” is probably a better idea than trusting a web service, but that’s a matter of private preference. There is no preferred wallet type and there are obvious trade-offs to both. Privacy advocates would probably say a local wallet is best.

You can download a local wallet here but make sure you keep a copy of your data backed up. Once you’ve created a wallet, you get an address like this: 1BEkUGADFbrEShQb9Xr4pKPtM8jAyiNQsJ.

This, without the period, is a direct way to send bitcoins to your wallet. Make a note of your address. In Coinbase, the wallet address found under linked accounts.

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