A friend of mine had the same problem with his Mac running my miner. It would only work with the 9400M.

After he switched the power saving setting on the Mac to performance mode it was possible to run both the 9400M and the 9600M. The same solution should work for DiabloMiner too, or any OpenCL-miner for that matter.

Hope that helps.

Thanks for the testrun, SteveFL.

I will have performance improved on radeon 4xxx and 5xxx in a few days.

The pool works well with Phoenix. I was just upgrading to the latest bitcoind at the moment you got disconnected. For some reason the old bitcoind took a while to shut down, which caused timeouts in the pool.

Sorry you are not seeing satisfactory speed on your GPUs, guys. I am ordering a Radeon 5870 so I can make sure it runs well on your cards (VLIW5 architecture). I probably begin tweaking for that in a day or two.

Daveid: Glad to hear you like the miner. Today it only shows a 2-second average. I'll be implementing a longer-running average soon - it seems to be a common thing people want.

OCedHrt: I'll have total hash rate displayed very soon. Also better/more statistics are coming soon. But I'm not sure about real time stats, as it would aid pool hoppers. Of course I could switch to score-based payouts instead of proportional, but I'm not sure I like that system. I prefer everything to be as transparent and easy to understand as possible.

Right now you can see how many shares a worker ever produced in total, under "my account". I'm thinking of adding a reset-button and "shares since last reset" as well. That might be a good substitute for "shares submitted for current block" ?

Giving away some bitcoins. Someone told me that's what pool operators are supposed to do.

5% extra payout during beta period. More details at http://forum.bitcoin.org/index.php?topic=27062.0

Make bitcoins at the BitMinter mining pool!

Why you want to join us:

• ASICs supported with variable difficulty and your choice of 1: Stratum, 2: GBT, or 3: getwork with rollntime
  
• Merged mining - get namecoins for free while you make bitcoins
• Fast custom miner, easy to use, requires no installation
• Only 1% mining fee! Additional optional donation can be adjusted after signup.
• We pay income from transaction fees in addition to the freshly minted coins
• Hopper-safe: income is split fairly between users (weighted and shift-based PPLNS)
• Immediate payout upon block confirmation, in addition to hourly payment runs
• Very few stales (meaning more bitcoins)

Joining us takes seconds:

• 1. Fill in the little sign-up form at https://bitminter.com/signup
• 2. Start the miner with "engine start" here or on our website (Java required)
• 3. Experience mining the way it should be

Connect with any miner:
You can click the "engine start" button to launch BitMinter client, our user-friendly alternative, or in case you already have a mining client installed, here's how to connect to BitMinter.

We support all three communication protocols for mining. The old "getwork" protocol is the most primitive. Of the two new mining protocols, GBT (getblocktemplate) is focused on letting miners see (or even modify) the contents of the blocks they are mining, while Stratum is focused on using very little bandwidth.

Connect to stratum+tcp://mint.bitminter.com:3333 (Stratum) or http://mint.bitminter.com:8332 (GBT or getwork). As user name put your BitMinter user name, an underscore, then a worker name, e.g. DrHaribo_FastWorker. In case you have firewall issues, port 5050 (Stratum) and 80 (GBT/getwork) are also available.

Pool backend updated: Faster block change detection. Better cheat protection. Some changes to scale better.

Seems to be running fine.

Regarding source code: The miner, pool backend and web application are all closed source. At least for now. If you prefer open source or a command-line miner, then DiabloMiner seems to me like a good alternative. But all miners should work with the pool.

The hashrate is still quite low. And I still haven't programmed in an estimated hashrate for the pool - but it's coming soon!

Sorry about connection issues. While I was working on the server I lost all connectivity with it. I got things running again as soon as I was able to reconnect.

As for hashing speed of BitMinter: I made a couple optimizations the other day. I can't remember if I put those up on bitminter.com friday or saturday. Then I tested it on radeon 6990 and geforce gtx 580. Both GPUs ran faster on BitMinter than DiabloMiner and Phoenix w/phatk. Although with DiabloMiner the difference was barely 1%. That was on Catalyst 11.6 though. I'll have to try on Catalyst 11.7.

The OpenCL kernel is compiled at runtime so different drivers can definitely make a difference there.

The vectors thing seems a little random. For me manual vectors help a lot on radeon 6990, but makes geforce gtx580 run much slower. The GTX580 usually runs faster with vectors with other miners, though. Must be a weirdness with my kernel.

Cool, OCedHrt, good to hear you are getting good performance. Adding "average speed" to my TODO list - good idea!

And... First block created!

Yes, you really need manual vector handling on AMD. Their auto vectorization isn't very good.

I made some changes to vectors. Appreciate it if you could try again. BFI_INT on and off are different kernels, so might yield different results.

Quick update:

• New statistics page listing generated blocks. Not much to see before we mine some blocks.
• Number of proofs of work delivered by each machine(worker) listed under "my account"
• Mails less likely to be rejected as spam. If you never got your email confirmation link, go to "my account" and enter your email address again.

Now fixed so poclbm works - thanks iopq! (my pool backend wasn't including "error":null in getwork responses - somehow the miners I tested so far didn't mind)

jdebunt: Not sure what the problem is. Do other WebStart programs work on your machine? Here's a quick one to test:

http://www-pw.physics.uiowa.edu/das2/javaPlatformTest.jbf.html

I haven't tested with all miners yet, so I'm not 100% they will all work. Which miner are you using?

Remember that username, workername and password are all case sensitive.

I just tried it with DiabloMiner:

> ./DiabloMiner-Linux.sh -u DrHaribo_Smurf -p MyPassWord -l http://mint.bitminter.com:8332/
[27.06.11 13:52:07] Started                                                 
[27.06.11 13:52:07] Connecting to: http://mint.bitminter.com:8332/           
[27.06.11 13:52:08] Using NVIDIA CUDA OpenCL 1.0 CUDA 4.0.1                 
[27.06.11 13:52:08] Added GeForce 9400 GT (#1) (2 CU, local work size of 512)
mhash 2,7/2,7 | accept: 0 | reject: 0 | hw error: 0

(No, the Smurf is not a kick-ass machine)

OpenID login problems: The easiest way to log in is to click one of the shortcuts instead of typing in your OpenID provider manually. If you have a google or gmail account, just click the little google logo. If you can't see it - turn on javascript. Sorry, no Facebook login yet - I may add that later but since they don't support OpenID it will take some extra work.

Oldminer: The problem you are having with "splash: recv failed" is due to Java not being able to access the server. I should probably add some help pages with solutions for things like that. It may be due to a firewall. For the built-in Windows firewall, I think the first time a Java program tries to access the network, Windows will ask whether to allow it and you just click yes. For other firewalls, things may work differently.

If you need to use a proxy for web access, you can set that up in the Java settings. You can find Java in Control Panel if using Windows. Alternatively, and this works on any operating system, run the command "javaws -viewer". You can run it from the command line on Linux or Mac. Easiest in windows is to hit the start button and type it in there. It opens two windows, just close the "Java Cache Viewer". The other window "Java Control Panel" is where the proxy settings are: under the "General" tab hit the "Network Settings..." button. You can type in your proxy info there. If webpages work in your browser, you may want to just choose "Use browser settings", to let Java access the network the same way.

iopq: Sadly I have not had a chance to test the miner on a Juniper GPU before. It works fine on Cayman and many NVIDIA GPUs. It's weird that the same OpenCL code would compile on some GPUs and not on others. I'll look into it. Would be cool if people who get it running on their GPU could state which GPU they are using and what kind of speed they are getting. You may get slightly higher speed if you hit the button in the lower right of the window, which hides all the fancy gauges so the GPU can focus on actual work.

Sorry guys! Bug fixed in signup code. Also fixed a potential issue with OpenID handling.

Could you try it again? Should be working now..

Great idea, guys, thanks. Pool commission turned off. Original post updated.

The miner is fast too, not just good looking.  It is at least faster than poclbm. But I don't want to make any big claims before I test it more. Which are the fastest miners these days that I should compare it against?

CPU mining not really supported yet, though. I don't have a good implementation of that yet.

Oops, two threads. Use this one instead: https://bitcointalk.org/index.php?topic=27062.0

I wrote everything from scratch, the miner, the mining pool backend and the web application. The only existing bitcoin software I'm using is bitcoind. I haven't modified bitcoind, but if/when I do, I will of course check the license first.

About the pool operator stealing work or charging a higher commission: these are issues with any pool and has nothing to do with the miner. Any miner will send its work to a pool and you just have to hope you get paid. I hope that some users will give my pool a chance and with time I can show that I'm trustworthy, like Slush, Deepbit and other pools have already done. I plan to make statistics available to make everything as transparent as possible. I also have audit logs of every proof-of-work ever submitted to the pool. I could make them available if there is interest in this. Any opinions on this and other security or anti-cheating features would be highly appreciated.

I will look into adding support for HD 3800s, but it will take a while before I can get to it - I have to get some statistics and other things done first of all.

Currently I have 27046 shares accepted and 13 stales. That's 0.048% stale.

On a much slower machine I have 40 shares accepted and 0 stales. Will have to let it run longer before the numbers really say anything.

Two theories as to why this is so low:
1. I'm mining in my new mining pool which is still very small. The biggest pools may take a little longer to notify all users by long polling.
2. My miner software stops work on outdated data immediately when it is notified by long polling. Not sure if all miners do this. If your miner doesn't do this, then slow hardware would generate many stales.

I might consider supporting 3800s. I even have a 3870x2 lying around. But isn't Stream a deprecated and unsupported technology?