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2061  Local / Барахолка / Re: Куплю DVI или HDMI кабель за биткоины on: February 19, 2011, 06:39:51 PM
Как раз на днях покупал пятиметровый DVI-кабель чтобы генерящий комп вынести из комнаты Smiley
Теперь надо метров на 20...
2062  Bitcoin / Bitcoin Discussion / Re: A simple application to backup your wallet in Dropbox and Gmail on: February 19, 2011, 04:52:58 PM
It does bring up a command prompt, but I'm not sure yet how to prevent that from happening in Windows XP.
Just run the script as different user - then console window won't show up.
2063  Bitcoin / Pools / Re: Cooperative mining (>20Ghash/s, join us!) on: February 19, 2011, 08:14:30 AM
I should add this is regarding solo, but should also apply if I'm in a pool as well.
Saving is not needed when you mine solo.
Imagine this as buying lottery tickets in a shop. There is no difference if you continue buying for 10 hours without stops or do this for 5 hours, then leave the shop and come back next day for another 5 hours.

For instance, say I'm 3 days in. If I stop, do I lose those 3 days I've been working at and start all over or do I just pick up off from the 3 days?
Those first 3 days are ALREADY lost because you didn't find anything, so you can't lost them again.

When mining in slush's pool you can lose about 20-40 mins of work if you disconnect in the middle of a round.
In other pools you won't lose anything except for the one share that wasn't sent by you yet.
2064  Bitcoin / Pools / Re: Cooperative mining (>20Ghash/s, join us!) on: February 19, 2011, 06:25:38 AM
I had two workers that I turned off early in the round because it's a warm day and I tend to run a few only during the night.  They had found ~50 and 9 shares prior to turning off.  Looking now, I see their scores were zero (probably decayed to zero after they were offline for ~6 hours).  I turned them both back on just to see what would happen, and found a few proof of works fairly quickly, and the scores went up accordingly.  This seemed to add quite a bit to the estimated reward within a short amount of time (>0.10 BTC)
Cheating will be much more effective with new scoring - you just need to start some ~20 minutes after new block.
2065  Bitcoin / Pools / Re: Cooperative mining (>20Ghash/s, join us!) on: February 18, 2011, 12:05:51 AM
I'm crunching at ~800 Mh/s and everything was fine until this update.
Now 9 blocks already found by pool and i'm getting about 50% of my normal reward, i don't think it's just a random fluctiation - my progress rate was perfectly straight for previous two days.
It was ok to make donations mandatory, it was ok to delay stats by 2 hours and hide everything, but taking 50% off is certainly not ok for me. I can't even guess now if someone got those BTCs instead of me, or they go directly to pool's owner Sad
2066  Bitcoin / Pools / Re: Cooperative mining (>20Ghash/s, join us!) on: February 17, 2011, 11:48:26 AM
slush, would be nice if you implement forcing logoff to all browsers of the user who changes his password.
In a situation when someone's password is compromised, changing it and logging off won't kick the "evil guy" from site.
2067  Bitcoin / Mining software (miners) / Re: python OpenCL bitcoin miner on: February 16, 2011, 11:36:17 AM
Do you know what's changed since poclbm_py2exe_20101126 so the new version doesn't works correctly anymore on slave core of 5970 in Windows ?
Current version works fine on primary core, but after finding first "accepted" share on slave core it starts flooding console with that "check hardware" error. Older, poclbm_py2exe_20101126 version works on both cores...
Yes, I'm aware of this problem. Unfortunately I'm still unable to resolve it. Any help from someone with 5970 on windows will be appreciated. The problem does not exist on Linux, but I can't figure out why it appeared on Windows only after the 20101126 release.[/quote]
What kind of help do you need ?
2068  Other / CPU/GPU Bitcoin mining hardware / Re: GPUs for mining? on: February 15, 2011, 08:17:44 AM
The disadvantages of 5870's are that you can fit less hash/s on a single motherboard and that they are less energy efficient compared to the 5970s.
I doubt about energy efficiency, it's only few percent of difference because in Windows at stock frequency 5970 has only 1.5-1.7 times more hashing power than 5870 and consumes 1.5 times more watts. When you overclock and overvolt 5970 it will take considerably more watts than it's specified <300 W.

5870's default frequency is 850 Mhz and it usually runs fine at 950 without any modifications or special cooling.
5970 is clocked at 725 Mhz and usually needs voltage rising to run faster than 800 Mhz. You'll also need serious PSU and cooling.
2069  Bitcoin / Mining / Re: Setting up my rig for mining. GPU questions. on: February 15, 2011, 08:00:57 AM
What sort of return (block/week) should I expect on the 5870?
11 BTC per day in pool before next difficulty step (expected in 3-5 days). Then 30% less.

Can I run cpu in pool as well without degrading my gpu mining performance?
There is no point in doing so. Overclocking 5870 just a 1-3% will be more noticeable than all your CPU power.
5870 crunches at 320-350 Mh/s depending on core frequency and your CPU will give only 2.4-4.5 Mh/s.
2070  Bitcoin / Mining software (miners) / Re: python OpenCL bitcoin miner on: February 15, 2011, 07:49:15 AM
Hello, m0mchil. Thanks for your miner Smiley

Do you know what's changed since poclbm_py2exe_20101126 so the new version doesn't works correctly anymore on slave core of 5970 in Windows ?
Current version works fine on primary core, but after finding first "accepted" share on slave core it starts flooding console with that "check hardware" error. Older, poclbm_py2exe_20101126 version works on both cores, but it's not as funny as latest one and i think that it uses only 85-90% of the GPU.
2071  Bitcoin / Pools / Re: Cooperative mining (>20Ghash/s, join us!) on: February 15, 2011, 07:44:13 AM
It seems like you took the option to change passwords away too. 
How do I delete my account, or change my password?
Use "forgot my password" to change it.
2072  Bitcoin / Pools / Re: Cooperative mining (>20Ghash/s, join us!) on: February 14, 2011, 12:07:44 PM
In fact, there is a perverse incentive for other miners not in the pool to attack slush's server to increase their payout .... just saying.
Attacking pool will not increase their payout in any way except for lowering difficulty level if people from the pool won't crunch solo.
2073  Bitcoin / Pools / Re: Cooperative mining (>20Ghash/s, join us!) on: February 14, 2011, 06:33:37 AM
This morning i noticed that sum of last rows in "duration" column shows 5 hours more than time passed according to "block found" column. How this can happen ?

One line shows real time and second line shows sum of durations, they are not equal anymore...
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