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Author Topic: [XPM] Working on a GPU miner for Primecoin, new thread :)  (Read 160823 times)
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mtrlt
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August 14, 2013, 04:57:39 PM
 #1

New thread!

Currently the newest version is beta 2. If you are a donator with an old version, just redownload the miner from the link I sent you.

I am working on an OpenCL GPU miner for Primecoin. I fully intend to release it open-source and for free when it's ready.

Progress reports: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

When will it be released?

The closed beta is now running (since 2013-09-02), and the public release will be in a week or two. If you are a donator but didn't get the miner, whine to me and I'll send it to you!

Why should I trust you?

I am the creator of the GPU miner Reaper. I was the first person to show that GPU mining Litecoins (i.e. scrypt) is possible and also a lot more efficient than on the CPU. I've made my own GPU miners for many coins, including Bitcoin, Litecoin and Yacoin, although not all of them have been released to the public. The Primecoin GPU miner will be free and open-source.

I am also a university math student, and I have made my own implementation of the Elliptic Curve Digital Signature Algorithm used by Bitcoin (and all its forks) to make transactions. From scratch. (Yes, that includes my own bignum library.) I know a lot about algebra, prime numbers and such.

Why not CUDA?

CUDA is not cross-platform. It only works on Nvidia cards, but AMD cards are the ones with the best performance. OpenCL works on all GPUs.

What operating systems will the miner support?

Windows and Linux.

How fast is the miner going to be?

Currently it's not really faster than a CPU. It'll be optimized in time, though.

Official development thread at ppcointalk: http://www.ppcointalk.org/index.php?topic=508
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mtrlt
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August 14, 2013, 05:00:26 PM
 #2

So, a new update. I had some problems implementing Barrett reduction, but now I only need a division algorithm and I can finally test and hopefully send the miner out.
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August 14, 2013, 05:05:08 PM
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Good luck,

So, only one or two days should be enough, no?
Have you an estimate of the speed increase?

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August 14, 2013, 05:11:52 PM
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Thanks for the update and fresh thread.
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August 14, 2013, 05:20:25 PM
 #5

Cool, cant wait to see how well this works, however I kinda like being able to mine primes on my cpu and scrypt on my gpus at the same time Wink

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August 14, 2013, 05:20:32 PM
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Good luck,

So, only one or two days should be enough, no?
Yep, but I have plans for the weekend. I'll try to get as much work done as possible before that.

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Have you an estimate of the speed increase?
Not really, no.
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August 14, 2013, 05:24:04 PM
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Yep, but I have plans for the weekend. I'll try to get as much work done as possible before that.

Drinking 75 BTC worth of "champageun"? :p

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August 14, 2013, 05:32:25 PM
 #8

Keep up the good work (not bothered by the delays myself)  Grin

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August 14, 2013, 05:38:11 PM
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I forgot to ask in the other thread: will the miner support multiple GPUs?
Secondly, is this a true "miner" or is it solo-mining client replacement?

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August 14, 2013, 05:39:32 PM
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will the miner support multiple GPUs?
Yes.

Quote
Secondly, is this a true "miner" or is it solo-mining client replacement?
It's a true miner, a fully standalone program.
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August 14, 2013, 05:43:39 PM
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Quote
Secondly, is this a true "miner" or is it solo-mining client replacement?
It's a true miner, a fully standalone program.

So does that mean the requirement for a pool, or simply connecting via RPC?

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August 14, 2013, 06:19:09 PM
 #12

75 BTC man. You made a KILLING.

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August 14, 2013, 06:29:23 PM
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Thanks for the new thread and status update. Here's to hoping we get to see a working gpu miner before September Cheesy

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August 14, 2013, 06:30:53 PM
 #14

Just saw this thread, planning to donate some, is it too late?

Also, will your miner work on Windows? I have only cgminer experience so far.
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August 14, 2013, 06:37:50 PM
 #15


Why not CUDA?

CUDA is not cross-platform. It only works on Nvidia cards, but AMD cards are the ones with the best performance. OpenCL works on all GPUs.


You might want to investigate this some more.  It is very true that AMD (ATI) cards blow Nvidia cards away when doing SHA-256 or scrypt processing, but primecoin uses a VERY different 'hashing' algo.  It is possible that Nvidia may process primes just as well (probably a good topic for a separate thread - any takers?)  I'm far from an expert (or even conversant) on either architecture, but until someone investigates it, it's not fair to make such a statement based on a different problem set. 

Of course, CUDA still is not cross platform, and any miner worth his salt is using AMD cards already, so that is still a valid reason for discounting CUDA. 
mtrlt
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August 14, 2013, 06:59:07 PM
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You might want to investigate this some more.  It is very true that AMD (ATI) cards blow Nvidia cards away when doing SHA-256 or scrypt processing, but primecoin uses a VERY different 'hashing' algo.  It is possible that Nvidia may process primes just as well (probably a good topic for a separate thread - any takers?)  I'm far from an expert (or even conversant) on either architecture, but until someone investigates it, it's not fair to make such a statement based on a different problem set.  

Of course, CUDA still is not cross platform, and any miner worth his salt is using AMD cards already, so that is still a valid reason for discounting CUDA.  

As far as I know, Nvidia cards are faster at floating point operations, which are not used in Primecoin mining.
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August 14, 2013, 07:10:25 PM
 #17

Good luck,

So, only one or two days should be enough, no?
Yep, but I have plans for the weekend. I'll try to get as much work done as possible before that.
Thanks for the update. I know everyone here is glad to get an update for a highly anticipated project like this one. I can't wait to see the working version.

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August 26, 2013, 01:01:43 AM
 #18

New update!!

The GPU primality tester works now! Finally.. Testing the first, very much unoptimized version on testnet, a HD6990 seems to be about 2x as fast as a Phenom x6 1055T. On mainnet, there's still the problem of having too few candidates left after sieving, which leads to GPU underutilization.

I'll write a better update in the morning, it's 4 AM..
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August 31, 2013, 02:51:17 AM
 #19

I'm looking forward to sending the first version to donators this weekend. Let's see how it goes.

Also, thread is now unlocked. I'm sorry I haven't communicated better, I've hit a rough patch in my life, but it'll get better..
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August 31, 2013, 02:58:33 AM
 #20

"Rough patch" : When the coin is no longer worth mining and he has finished crashing the market.

http://coinmarketcap.com/xpm_30.html

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