2020. 2. 14. 05:14ㆍ카테고리 없음
Monero (XMR) CPU miner. Contribute to xmrig/xmrig development by creating an account on GitHub. The more people are mining the fewer they get. Mining cryptocurrency is a race that is designed to reward early adopters. YAM is easy to work with for beginners and efficient. It uses 2.5% mining power for the creator of the program to mine XMR. It is a CPU miner. YAM miner gives you 10%-50% more hashing power if you run it as an administrator. Mac OSX users: Click Finder, in the opened screen select Applications. In the uninstall programs window, look for 'CPU Miner' and 'SG Miner', select these entries and click 'Uninstall' or 'Remove'. After uninstalling the potentially unwanted program, scan your computer for any remaining unwanted components or possible malware infections.
I was curious to know the performance of Bitcoin mining on a PowerMac G5. Let me say that if you are mining Bitcoin using a CPU, you're probably doing it wrong, but I like to experiment and had an extra G5 sitting around to test. Mining with GPUs is much faster, costs less to mine per watt and is therefore, more profitable. There are now dedicated Bitcoin mining machines that blow away GPU mining so this too will become a thing of the past.
After searching long and hard, I couldn't actually find any information on mining performance a a G5 or a comprehensive tutorial on how to set it up for maximum performance. This list shows mining performance on G3 and G4 processors, but not a G5 processor. INTERESTED in REAL MINING? Check out my post - or if interested in Buying & Selling Bitcoin and Litecoin,. I'll explain how I got it working in a minute, but first on to the performance numbers. Using CGMiner version 2.11.4 on a PowerMac G5 dual 1.8Ghz computer running Mac OS X 10.5.8 I got performance of only around 800 Khash/s combined between both processors. Even for CPU mining this is terrible.
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I thought there had to be another way to increase performance since one of the features of the PowerPC G4 and G5 architecture was Altivec which is additional instructions built-in to the CPU to provide enhanced graphics performance. The problem was that initially I could only get CGMiner compiled for CPU mining using C and Cryptopp as the hashing algorithms. I figured that if I could enable Altivec, I could get better performance. After a lot of work I figured out how to get Altivec compiled into CGMiner as a supported algorithm and it had a big effect on performance.
With Altivec, the PowerMac G5 was showing performance of close to 2 Mhash/s or more than double the performance under the other algorithms. Again, not great, but on par or slightly better than what I get with an iMac core 2 Duo Intel processor. Here's what I did to get it to work. Prerequisites:. compiler that works on Mac OS X 10.5.8.
I signed up as an Apple developer and downloaded an older version of Xcode developer tools that works with Mac OS X 10.5.8. Xcode includes a compiler and this is required to compile the following software. yasm - download (this is required to get Altivec working). pkg-config - download (this is required to get CGMiner to recognize installed packages when compiling) configure it with -with-internal-glib. libcurl - download (this is required by CGMiner). CGMiner - download (this is required for actual Bitcoin Mining) By default CGMiner doesn't compile with CPU mining support so you have to configure with the flag -enable-cpumining.
Version 3.0 and above of CGMiner source code no longer has CPU mining code so you have to use an older version or you can use BFGMiner as well with same settings. I'm not going to go into all of the configure, make and make install commands, since I don't recommend wasting your time. However, if you are so inclined to get CPU mining working on your PowerMac G5 read through the comments to see if any of the posts can help. I no longer have access to a G5 so personally can't help much. Version of CGMiner What version of CGMiner are you using? Only older versions support CPU Mining and the flag -enable-cpumining must be set.
If that still doesn't work, you may want to try BFGMiner. It requires a special C library that needs to be manually installed. I personally prefer to have everything in /usr/ as opposed to /usr/local or /opt/local when installing the prerequisites. Seems to make the configure/make/make install go easier.
I no longer have access to a G5 machine anymore so not sure what other recommendations I can provide. CGMiner Command to Select Altivec at Runtime Oh, one more thing. When you run cgminer, you'll need to run it with the flag of '-a altivec' or '-a auto' which will benchmark each algorithm and pick the fastest. On a G5, it will be altivec, so best to pick it specifically as sometimes the initial altivec benchmark in automatic mode can be lower than the other algorithms it tries. Lastly, CPU mining has been disabled in version 3.0 and above of CGMiner so you'll need to compile from the 2.X source tree.