- May 30, 2011
After all this bitcoin hype lately and the fact that most clients are made for Linux, no wonder that i have seen several requests on how to run a bitcoin generator under FreeBSD. I’m still not convinced that bitcoins are more than a pyramid scheme, but i decided to check things out and it actually nowdays is quite easy to get a miner running on FreeBSD.
Well get a basic bitcoin generator and wallet running is quite easy:
First upgrade ports (The bitcoind port was recently updated), and then install bitcoind.
# portsnap fetch update
# cd /usr/port/net-p2p/bitcoind
# make install
When the config screen you have a option to enable the GUI or not. Since the port only installs bitcion (The command with GUI) or bitcoind (The command without GUI) you will have to decide which is best for you. I clearly prefer the version without GUI so it can be started in /etc/rc.local and run in the background.
When the install is done you have a bitcoin miner and wallet to run. Play a bit with it, but don’t use it!
Why? Well CPU mining is so slow that it will take for ages to get a bitcoin payout. I’m talking about years!
So instead join a mining pool. A mining pool is a service where serveral miners join forces and split the rewards when they mine a block of coins. In this way you will receive a small portion of the payout in proportion to how much you have contributed towards the block. The downside is that bitcon or bitcoind does not support joining bitcoin pools. So lets install another (Actually more efficient) miner. The one i have experimented with is called minerd and unfortunatly there is no port for it.
So this is what you need to do to get it up and running:
# portsnap fetch update
# cd /usr/ports/devel/jwasm
# make install
# cd /usr/ports/ftp/curl
# make install
Now it is time to download, patch and install minerd:
% wget http://btcmine.com/media/miners/cpuminer-1.0.tar.gz
% tar xvf cpuminer-1.0.tar.gz
% cd cpuminer-1.0
Now some magic to get it running.:
Edit Makefile.in and find the follwing row:
And change it to:
A file missing on FreeBSD is byteswap.h, but since it is just some small static inline functions jsut download it into the current directory:
# wget http://www.arnold.se/byteswap.h
Now we are ready to run configure and compiling the source:
# setennv CFLAGS “-O3 -Wall -msse2”
This should have gone ok with a couple of warnings. Now we can run the miner with the following command:
% ./minerd –algo 4way –threads 2 –url http://mining.bitcoin.cz:8332 –userpass USER.XXX:PASS
(This example is for running against the bitcoin.cz server at http://mining.bitcoin.cz/ and you will need to register before your work will count towards generating bitcoins.)
And please note the –algo switch, there is several sha256 implementations to choose inbetwen. Do a couple of runs and check wich one is fastest on your machine. Now give it some time and you can start seeing the bit-cents rolling on your mining pools statistics page.
Anything strange? Or any questions or feedback? Please drop a comment here and i’ll try to help you out.Это интересно:
Free Bitcoin Miner app updates on Windows 10 Mobile & PC
CPU Miner от Ufasoft, о котором я рассказывал в одной из прошлых статей, довольно хорош и показывает отличную производительность, но мне не удалось запустить его на всех платформах, к примеру на FreeBSD. В этих случаях придет на помощь jgarzik’s cpuminer, который у меня заработал и на Linux, и на FreeBSD, и на Windows.
Если информация покажется интересной, как обычно, не откажусь от вознаграждения на Bitcoin-кошелек 1MZyTawkrLNPmGL41idBrbBn2VNVivAhmB
Исходники можно скачать отсюда — http://yyz.us/bitcoin/cpuminer-1.0.2.tar.gz
Для скачивания, сборки и запуска нужно ввести следующие команды (на примере FreeBSD):
# wget http://yyz.us/bitcoin/cpuminer-1.0.2.tar.gz # tar xf cpuminer-1.0.2.tar.gz # cd cpuminer-1.0.2 # ./configure # make # ./minerd --url http://deepbit.net:8332/ --userpass USERNAME:PASSWORD --algo ALGORITHM
Указываете свой логин USERNAME и пароль PASSWORD на пуле Deepbit.net, а также алгоритм расчета — любой из списка — c, via, cryptopp, cryptopp_asm32. На разных алгоритмах получаются различные вычислительные мощности.
Вот каких результатов удалось достичь на двух ядрах процессора Intel Pentium E2160 @ 1.80GHz:
|via||не заработало (Недопустимая инструкция)|
Похожие статьилучшие автоматические биткоин краны.
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Mining bitcoin listens bitcoin transactions broadcasted through the peer-to-peer network and performs appropriate tasks to process and confirm these transactions. As a lower clock speed limit, the auto-gpu mode checks freebsd GPU card's "normal" clock speed and will not go miner this unless you have manually set a lower speed in the range. By BitCoin Junkie on Jun 11, Being increasingly irrelevant for most users, and a maintenance issue, freebsd is no longer under active development and will not be supported unless someone steps up to help maintain it. It s a decentralized digital miner Why Use Bitcoin.
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User games accept freebsd bitcoin miner in online holders by a business of methodologies, cheque, money order. The argument to the option may be "-" for standard output not advisable with the ncurses UI , any valid positive number for that file descriptor, or a filename. To log share data to a file named "share.
The setting passed to cgminer is used by all GPUs unless separate values are specified. All settings can all be changed within the menu on the fly on a per-GPU basis. There are two "auto" modes in cgminer, --auto-fan and --auto-gpu. These can be used independently of each other and are complementary. Both auto modes are designed to safely change settings while trying to maintain a target temperature. By default this is set to 75 degrees C but can be changed with: The overheat value is set to 85 degrees by default and can be changed with: As a lower clock speed limit, the auto-gpu mode checks the GPU card's "normal" clock speed and will not go below this unless you have manually set a lower speed in the range.
Also, unless a higher clock speed was specified at startup, it will not raise the clockspeed. If the temperature climbs, fanspeed is adjusted and optimised before GPU engine clockspeed is adjusted. If fan speed control is not available or already optimal, then GPU clock speed is only decreased if it goes over the target temperature by the hysteresis amount, which is set to 3 by default and can be changed with: If at any time you manually set an even higher clock speed successfully in cgminer, it will record this value and use it as its new upper limit and the same for low clock speeds and lower limits.
If the temperature goes over the cutoff limit 95 degrees by default , cgminer will completely disable the GPU from mining and it will not be re-enabled unless manually done so.
The cutoff temperature can be changed with: In this example, it will set the memory speed to be Mhz lower than the GPU speed. This is useful for some cards like the which normally don't allow a bigger clock speed difference. When setting values, it is important to realise that even though the driver may report the value was changed successfully, and the new card power profile information contains the values you set it to, that the card itself may refuse to use those settings.
As the performance profile changes dynamically, querying the "current" value on the card can be wrong as well. So when changing values in cgminer, after a pause of 1 second, it will report to you the current values where you should check that your change has taken. An example is that reference cards will accept low memory values but refuse to actually run those lower memory values unless they're within of the engine clock speed.
In that scenario, they usually set their real speed back to their default. Cgminer reports the so-called "safe" range of whatever it is you are modifying when you ask to modify it on the fly.
However, you can change settings to values outside this range. Despite this, the card can easily refuse to accept your changes, or worse, to accept your changes and then silently ignore them. Being very conscious of these possible failures is why cgminer will report back the current values for you to examine how exactly the card has responded.
Even within the reported range of accepted values by the card, it is very easy to crash just about any card, so it cannot use those values to determine what range to set. You have to provide something meaningful manually for cgminer to work with through experimentation. When cgminer starts up, it tries to read off the current profile information for clock and fan speeds and stores these values.
When quitting cgminer, it will then try to restore the original values. Changing settings outside of cgminer while it's running may be reset to the startup cgminer values when cgminer shuts down because of this. Xorg up and running configured for all devices that will mine on linux etc.
It is possible that this will fail for the following reasons: The default will work the vast majority of the time unless you know you have a problem already. To get useful information, start cgminer with just the -n option.
You will get output that looks like this: Advanced Micro Devices, Inc. If devices 1 and 2 were different between Tahiti and Cayman, you could run cgminer with: If you have 2 monitors connected to the first device it would look like this: Older versions of libncurses have a bug to do with refreshing a window after a size change. Upgrading to a new version of curses will fix it.
Can I mine on servers from different networks eg smartcoin and bitcoin at the same time? No, cgminer keeps a database of the block it's working on to ensure it does not work on stale blocks, and having different blocks from two networks would make it invalidate the work from each other.
Can I change the intensity settings individually for each GPU? Yes, pass a list separated by commas such as -I d,4,9,9 Q: Can I put multiple pools in the config file? Yes, check the example. The build fails with gcc is unable to build a binary.
The CPU usage is high. The ATI drivers after Note that later drivers may have an apparent return of high CPU usage. Can you implement feature X? I can, but time is limited, and people who donate are more likely to get their feature requests implemented. My GPU hangs and I have to reboot it to get it going again?
The more aggressively the mining software uses your GPU, the less overclock you will be able to run. You are more likely to hit your limits with cgminer and you will find you may need to overclock your GPU less aggressively.
The software cannot be responsible and make your GPU hang directly. If you simply cannot get it to ever stop hanging, try decreasing the intensity, and if even that fails, try changing to the poclbm kernel with -k poclbm, though you will sacrifice performance. It tries to restart them with a separate thread and if that separate thread dies, it gives up trying to restart any more GPUs.
Work keeps going to my backup pool even though my primary pool hasn't failed? Cgminer checks for conditions where the primary pool is lagging and will pass some work to the backup servers under those conditions. The reason for doing this is to try its absolute best to keep the GPUs working on something useful and not risk idle periods.
You can disable this behaviour with the option --failover-only. Is this a virus? Cgminer is being packaged with other trojan scripts and some antivirus software is falsely accusing cgminer. If you installed cgminer yourself, then you do not have a virus on your computer. Complain to your antivirus software company. They seem to be flagging even source code now from cgminer as viruses, even though text source files can't do anything by themself.
Can you modify the display to include more of one thing in the output and less of another, or can you change the quiet mode or can you add yet another output mode? Everyone will always have their own view of what's important to monitor. The defaults are very sane and I have very little interest in changing this any further.
The defaults are sane and safe. I'm not interested in changing them further. Efficiency simply means how many shares you return for the amount of work you request. It does not correlate with efficient use of your hardware, and is a measure of a combination of hardware speed, block luck, pool design and other factors Q: Most user defined settings lead to worse performance.
4.7 stars, based on 224 comments
bitcoind upstart configuration.
How to set up a bitcoin miner – CoinDesk
From Bitcoin Wiki
CGMiner is an open source ASIC/FPGA miner written in C, cross platform for Linux, Windows and OS X, and including support and binaries for RPi, OpenWrt routers and others.
- 1 Features
- 2 History
- 3 See Also
- 4 External Links
- 5 References
Features are listed here: https://bitcointalk.org/index.php?topic=28402.0
Version 3.8.0 of 10th November 2013 dropped support for scrypt and GPU mining.