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Author Topic: New demonstration CPU miner available  (Read 371860 times)
jgarzik
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April 04, 2012, 02:44:23 AM
 #501

Given that CPU mining support has been discontinued for cgminer, I hope that people will find this fork useful.

Really?

Maybe we should reactive jgarzik/cpuminer then. and start merging pull requests.


Jeff Garzik, bitcoin core dev team and BitPay engineer; opinions are my own, not my employer.
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Each block is stacked on top of the previous one. Adding another block to the top makes all lower blocks more difficult to remove: there is more "weight" above each block. A transaction in a block 6 blocks deep (6 confirmations) will be very difficult to remove.
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pooler
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April 04, 2012, 12:43:03 PM
 #502

Given that CPU mining support has been discontinued for cgminer, I hope that people will find this fork useful.

Really?

I'd say so, judging from this post:

I'd say the votes are pretty conclusive. Thanks everyone for your input. For simplicity I'll be making it a compile time selection for now, default off. This has already been committed to the git tree and will be in the next version. I will no longer be releasing binaries with CPU mining support built in and if it proves innocuous in this fashion, it will be left that way. Should issues arrive, it will be deprecated entirely in a future version.


Maybe we should reactive jgarzik/cpuminer then. and start merging pull requests.

Honestly I don't think this is necessary, since very few people still mine Bitcoin on CPU. In addition, cgminer has never been the only miner with CPU support (there's Ufasoft's miner, for instance).
I also think that, as a core Bitcoin developer, your time would probably be best spent elsewhere.
All this to say: I would be more than happy to take this project over, especially considering that I've rewritten a lot of the old code already. Cheesy

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Gabi
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April 05, 2012, 09:00:56 PM
 #503

Given that CPU mining support has been discontinued for cgminer, I hope that people will find this fork useful.

Really?

Maybe we should reactive jgarzik/cpuminer then. and start merging pull requests.



Seriously, CPU mining is useless
mcorlett
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April 06, 2012, 04:56:28 AM
 #504

Given that CPU mining support has been discontinued for cgminer, I hope that people will find this fork useful.

Really?

Maybe we should reactive jgarzik/cpuminer then. and start merging pull requests.
Seriously, CPU mining is useless
Because the only reason we're here is because of money!

Gabi
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April 07, 2012, 04:25:15 PM
 #505

It's useless even for security purposes.
luicon
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July 29, 2012, 04:28:34 PM
 #506

this program crash when i open it
Gabi
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July 30, 2012, 10:28:14 PM
 #507

Then it work in the correct way: cpu mining today is useless  Cheesy
jgarzik
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July 31, 2012, 01:23:34 AM
 #508


Pull requests for cpuminer are still welcomes.

cpuminer is definitely used on testnet and various other alt-coin scenarios.


Jeff Garzik, bitcoin core dev team and BitPay engineer; opinions are my own, not my employer.
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ssateneth
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July 31, 2012, 07:16:56 AM
 #509


Pull requests for cpuminer are still welcomes.

cpuminer is definitely used on testnet and various other alt-coin scenarios.



And botnets Tongue

dmatthewstewart
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April 30, 2013, 10:19:32 PM
 #510

What other coins can be mined using CPU Miner? I cant seem to find a list anywhere and really cant look through 30 pages of posts

postcd
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June 26, 2013, 10:05:47 AM
 #511

I cant find Linux installation guide for this miner  Embarrassed

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June 26, 2013, 10:07:09 AM
 #512

I cant find Linux installation guide for this miner  Embarrassed
Trust me, you don't need it. Plus, you are better off compiling cgminer with CPU support as it has faster algorithms I believe.

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-ck
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June 26, 2013, 10:15:57 AM
 #513

I cant find Linux installation guide for this miner  Embarrassed
Trust me, you don't need it. Plus, you are better off compiling cgminer with CPU support as it has faster algorithms I believe.
cgminer lost its CPU mining code a long time ago now.

Primary developer/maintainer for cgminer and ckpool/ckproxy.
Pooled mine at kano.is, solo mine at solo.ckpool.org
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Amph
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June 26, 2013, 02:23:26 PM
 #514

ahhhh the good old days..
SirMintALot
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June 27, 2013, 04:06:10 PM
 #515

I cant find Linux installation guide for this miner  Embarrassed
Trust me, you don't need it. Plus, you are better off compiling cgminer with CPU support as it has faster algorithms I believe.
For Litecoin Mining it is still nice and it's easy to compile.

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fulanomengano
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May 21, 2014, 01:09:39 AM
 #516

I started a fork of jgarzik's miner a few months ago. The original goal was to provide an optimized miner for Litecoin, an alternative chain that uses a completely different hashing algorithm from Bitcoin. Over time, however, I have also added a number of new features and bugfixes. You can find a complete list of all important changes in the NEWS file; they include:

  • Optimized work handling, resulting in a much better getwork efficiency.
  • Support for HTTP and SOCKS proxies.
  • Support for many different operating systems and architectures, including big-endian ones. The miner has been reported to build successfully on Linux, FreeBSD, Solaris, Mac OS X and Windows (using mingw).
  • Clear --help output. (Please read it before using the miner!)

Now for the reason I'm writing this here.
Starting with version 2.2 of this fork, I have re-included support for Bitcoin mining, writing a new implementation of the hashing algorithm. This implementation is different in that the single --algo=sha256d option should provide the best performance on all systems.
On K10-based processors (such as the Phenom) this fork is only slightly faster than the old "4way" algorithm, but on all other systems you should notice a significant increase in mining speed. The miner is also capable of using AVX and XOP instructions on CPUs that support them, resulting in an even greater speedup.

Here's a link to the git repository:
https://github.com/pooler/cpuminer
Under the "Downloads" tab you will also find a source tarball and a couple Windows binaries.

I don't know if anybody is still interested in CPU mining. The main reason why I want to maintain this miner is because I enjoy coding; also, I like jgarzik's miner because, unlike many others, it conforms to the KISS design principle.
Given that CPU mining support has been discontinued for cgminer, I hope that people will find this fork useful.
For what is worth, I use your CPU miner, mainly for scrypt, but sometimes for SHA-256 too. I don't care that if it isn't profitable, not doing it mainly for the money. I wish it had some of the nice features that BFG has like dynamic pool handling, API access, log and share files output, etc. I'm actually trying to compile BFGminer with CPU option even though I haven't use C in 20+ years. That's how much I like the idea :-).

FM

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