Topic: [4+ EH] Slush Pool (slushpool.com); Overt AsicBoost; World First Mining Pool - page 758. (Read 4382801 times)

Even if you have different miners for the different cards? GUIMiner didn't even start. When no compatible cards (or drivers) are installed, at least I get an error message. I could run it and mine with the 4850 and a GeForce GTS 240 simultaneously. I ran two miners (tabs) in GUIMiner, it worked perfectly.

Is any one else getting a low payout for block 17987? I seem to have about half the reward of block 17986, even though the rounds where around the same length.

http://i.minus.com/ibk6NQ0ofmvS6v.JPG

Now it's working, with Phoenix and Stratum Proxy!

Sometimes it's obviously just better to do a workaround than trying to get something to work. I wouldn't have thought about that myself.

Thanks!

I think the problem you are having is because you can't mix hardware when mining.  You can run multiples of the same card, but not two completely different cards.  Sometimes even the same model card by different manufacturers is problematic.

Thanks for all the answers

I know my forum name is confusing. I began with an old GeForce card, but I have a friend who works with computers, and I have borrowed other cards from him. Currently, I am running one AMD Radeon HD 6700 series.

The driver is version 12.104.0.0, from the 13-4 installer. I have been switching drivers back and forth because I have been trying to mine on that card simultaneously with a 4850. No matter what I do, I couldn't get that to work, GUIMiner didn't start, it only got a tray icon that soon disappeared. With some drivers other programs crashed. As I said, I have spent at least six hours and twenty reboots on (not) getting it to work. I think I got all other drivers out before installing the one I just mentioned.

I gave up, at least for now, on that and is now only trying to mine with the 6700 series card.

I don't think the problem is in firewalls or routers, as it works with Phoenix, and worked on my other computer. I don't remember if I tried it when I had only the 4850 in this computer.
Also, I don't think BitcoinPool.com supports Stratum, so it can't be the protocol, as I have tried running OpenCL (poclbm) with BCPool and it still doesn't work.

I couldn't get Stratum Proxy to work on my other computer, but I think I'll try it again on this one.

2 things:

1. "Verification failed, check hardware!" tells you that the issue is at your end. I had a similar issue. It was the drivers. My card was a MSI one and I kept getting that until I got the drivers from MSI. The card is also a non-reference design, so I shouldn't have bothered with ATI's latest drivers in the first place.
Yours could be a different issue. But you have to fix that one first before looking at getwork vs stratum etc.

2. Phoenix doesn't support stratum - only getwork.  You can either mine using getwork (bad idea and 10% fee) or run the stratum proxy and connect your miners to the proxy.

DOH! forgot to mention you need to set up an exception in windows firewall so GUIMiner can talk out of the system!
Also get the mining proxy ( pre set to talk to Slush's pool anyway ) and try with server set to 'local host' port 8332.
I'm on XP so i got the warning the first ( and only time )  i started GUIMiner so sorry for totaly forgetting you have to let it talk out of your system.  If you also have a router this is probably one way to do it ( not advised ) is to set that pc as Enable DMZ Host - that pc.  Usually in your router's advanced settings under fire wall.  It is NOT advised as anything can get in that way ( but it works ).

[EDIT]
and last NMC credit for me was the following ( using mining proxy ie Stratum )
17984    2013-05-11 15:33:07    0:16:39    2441538    1    0.00002432    0.00008711    235672    25.50350000
not much, but it all adds up

You get namecoins in stratum protocol? You workers all mining stratum ?

Only time I ever saw that error was when I installed an updated graphics driver.  I ended up rolling back to the previous driver and it went away.  I believe what it is saying is that the share you submitted is not a valid hash which would indeed suggest that the hardware is making a computational error.  But more than likely (and your testing seems to bear it out) the hardware is fine and it is the way the miner is interfacing with the hardware, in other words the driver.

So what hardware and what driver are you using?  Your forum name is for nVidia hardware which you would normally want to use a CUDA miner with, but you are talking about an OpenCL miner which would normally be used for an AMD/ATI card.

I have server set to ' other ', stratum.bitcoin.cz and port 3333, and now I also tried the other two addresses. No difference.
I think the problem is in this end. I'll try to reinstall GUIMiner, but I don't think that it will help. I don't think it is the graphics card or the driver, because Phoenix works. I was running XP on my other computer, this one is 7. Doesn't poclbm-mod (I think it is mod, that comes with the latest GUIMiner) work in Windows 7?

Killing me with 75% of my workers just sitting there unable to mine

with my initial setup i set GIUMiner ( the default tab ) to Slush's for pool and entered in my user name, with the Stratum changes you have 2 options, set up the mining proxy client or set to ' other ' for the server and port 3333

you could try stratum3.bitcoin.cz or stratum2.bitcoin.cz and do not forget your worker username and password as it ' logs in for work '

https://mining.bitcoin.cz/stats/nmc/

I have put up a dedicated mining computer now, and I'm having a lot of problems with it, but I'll take one at a time. I am running GUIMiner
I'm getting this error message:

2013-05-11 16:26:06: Listener for "OpenCL Slush's": stratum.bitcoin.cz:3333 11/05/2013 16:26:06, Verification failed, check hardware! (0:0:Juniper, 2b5342eb)

when I am running an OpenCL miner connected to your pool.

You have said to others having this problem that it is most likely hardware or driver error, but I can run Phoenix (with BitcoinPool.com) without problems. What could it be? I have tried different flags.

PS: I tried running an OpenCL miner on BitcoinPool.com and I get the same problem:

2013-05-11 16:38:50: Listener for "OCL BCPool": bitcoinpool.com:8334 11/05/2013 16:38:50, Verification failed, check hardware! (0:0:Juniper, 74f69135)

I could try the other graphics card (that has other drivers), but please don't ask me to do it today... I have spent at least 6 hours and 20 reboots on trying to get the graphics cards working as I want, but they still don't. Nothing seems to work the way I want it to today.

1) get a namecoin wallet - watch the video and read at the bottom www.youtube.com/watch?v=ezo1t90QLFQ
2) set it up and put the wallet info in to your account to start doing/getting credit https://mining.bitcoin.cz/accounts/profile/
3) keep hashing
4) Profit!

last block i got namecoin credit for was this one
17953    2013-05-09 22:50:11    1:03:04    8451031    2    0.00000422    0.00001584

Well that would be my fault. If there's something I haven't explained well, please post a comment on the blog and I'll do my best to fix the post or add to it or post a primer on it.


I don't mine at the moment, and haven't for more than a year (since my gf complained about the noise of the computational hairdryer in the spare room and gave me an ultimatum). I'm waiting on a batch 2 Avalon at the moment, and when I get it I'll be spreading the love, as suggested by Meni Rosenfeld in this post: https://bitcointalksearch.org/topic/mine-in-multiple-pools-to-reduce-variance-78031 I think cgminer makes that fairly easy.

As to which pools I'll be using, I'm not sure yet. Probably (alphabetic order) BitMinter, Bitparking, BTCGuild, HHTT, Ozcoin,  and Triplemining. Anything using DGM (with setting I like) or PPLNS (with an N that I like). Not Slush's pool, because although I really like the pool and have a lot of respect for Slush and I'm not concerned about losing much due to pool hopping but because I don't want to support a reward method that can be gamed. If that gets changed I'll be adding Slush's pool to the rotation.

For namecoins is needed for mining protocol Getwork - http://api.bitcoin.cz:8332?
I'm not in the stratum namecoins credited.

@organofcorti  Although I haven't read nearly all of your blog posts, nor understood all of the ones I have read, it is obvious that you have spent a good deal of time analyzing pool mining.  I have also seen your posts in other pool threads and seen your analysis of bitminter.  So I am curious, with all of your analysis, where do you mine?  You may have said it before but if you did I missed it.

You haven't addressed any of my points and haven't a proof or hypothesis of your own, so no, I'm not going to start a thread.

We'll just have to agree that you're wrong and leave it at that

I do not want to clutter this thread and do not have much time for arguing. We are both pretty convinced in our statements, so it will not be quick and easy to make a switch in our opinions.
If you insist, please open a new thread for this and give me the link - i will post some personal observations to backup my point, but still afraid we will endup in agreeing to disagree.