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Board Exchanges
Re: www.BITSTAMP.net Bitcoin exchange site for USD/BTC
by
TiborB
on 07/01/2014, 18:16:41 UTC
The main page is back.

   T
Post
Topic
Board Pools
Re: [100 TH] Slush's Pool (mining.bitcoin.cz); TX FEES + UserDiff; ASIC tested
by
TiborB
on 02/12/2013, 16:27:38 UTC
Quote from: Humax on December 01, 2013, 11:35:38 AM
21012   2013-12-01 06:42:52   2:36:50   822353445   235376   0.00659462   272440    25.04495605
21011   2013-12-01 04:06:02   0:34:20   181000803     48822   0.00715762   272413    25.11093992
21010   2013-12-01 03:31:42   1:59:40   639039598   171289   0.00651526   272410    25.14099989
21009   2013-12-01 01:32:02   0:04:19   22915150       5768   0.00608615   272399    25.03550690
21008   2013-12-01 01:27:43   0:50:06   265077329    70864   0.00605277   272398    25.02827623
21007   2013-12-01 00:37:37   7:48:38   2147483647    none       none     272385    25.20690867   

Fix this please!

Just to wrap up: this issue has been fixed - I have the impression there was a recalculation with proportional method.
Kudos go to the pool operators.

Regards,
   T
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Board Pools
Re: [100 TH] Slush's Pool (mining.bitcoin.cz); TX FEES + UserDiff; ASIC tested
by
TiborB
on 01/12/2013, 11:10:51 UTC
For some (including me) shares/reward for round 21007 still show 'none'. I have seen recalculations/fixes in the past before the block is confirmed, but currently there are only 11 confirmations left...

21007    2013-12-01 00:37:37    7:48:38    2147483647    none    none    272385    25.20690867    11 confirmations left
This is the block where the total number of shared might have overflowed a 32bit integer - this is only speculation, but the total of shares is shown as exactly 231-1.

After my post on this issue last night and sending a PM within this forum, I was patiently waiting for this to get fixed, but now I have also sent a mail to pool operators and hope they will take action.

Regards,
   T



Post
Topic
Board Pools
Re: [100 TH] Slush's Pool (mining.bitcoin.cz); TX FEES + UserDiff; ASIC tested
by
TiborB
on 01/12/2013, 02:16:34 UTC
Quote from: nybbler905 on December 01, 2013, 02:12:20 AM
21007    2013-12-01 00:37:37    7:48:38    2147483647    none    none    272385    25.20690867    83 confirmations left

What??? i'm trying out block erupter usb sticks and it's fairly consistant until that block... ' none ' when even if i'm sooo slow at just over 1.00 gHash/sec for it to actualy be of value after 7 hours, it should NOT say ' none '

For Perspective...

21009    2013-12-01 01:32:02    0:04:19    22915150    71    0.00007444    272399    25.03550690    97 confirmations left
21008    2013-12-01 01:27:43    0:50:06    265077329    695    0.00006535    272398    25.02827623    96 confirmations left
21007    2013-12-01 00:37:37    7:48:38    2147483647    none    none    272385    25.20690867    83 confirmations left
21006    2013-11-30 16:48:59    0:47:42    251032842    670    0.00005810    272318    25.03404462    16 confirmations left
21005    2013-11-30 16:01:17    0:36:01    189004238    476    0.00006833    272313    25.07062858    11 confirmations left
21004    2013-11-30 15:25:16    2:20:08    739833931    1961    0.00007462    272307    25.18938665    5 confirmations left
21003    2013-11-30 13:05:08    0:57:13    308486793    819    0.00006235    272288    25.25633454    confirmed
21002    2013-11-30 12:07:55    1:07:11    355945193    916    0.00005303    272284    25.04851601    confirmed
21001    2013-11-30 11:00:44    1:03:22    328906191    858    0.00006505    272271    25.01071321    confirmed
21000    2013-11-30 09:57:22    1:17:49    406216337    1069    0.00006336    272260    25.12306089    confirmed
20999    2013-11-30 08:39:33    0:28:41    150222160    398    0.00006666    272255    25.24613312    confirmed
20998    2013-11-30 08:10:52    1:38:52    518634435    1401    0.00006232    272251    25.28002503    confirmed
20997    2013-11-30 06:32:00    0:54:52    287744552    740    0.00006716    272242    25.02774408    confirmed


Reading the two posts immediately before yours might give you some idea about this phenomenon. This seems to be affecting many of us.
Post
Topic
Board Pools
Re: [100 TH] Slush's Pool (mining.bitcoin.cz); TX FEES + UserDiff; ASIC tested
by
TiborB
on 01/12/2013, 01:24:30 UTC
I have the impression something is strange in the way shares are counted (or displayed) for very long rounds at current difficulty. Let us see the data:

block 272385, duration 7:48:38, number of shares: 2147483647
block 272149, duration 7:04:27, number of shares: 2147483647

It is rather improbable, but theoretically possible to get the exact same number of shares for these two rounds.
If you look at the number 2147483647 a bit closer, the situation looks even more suspicious.

2147483647 = 231-1

This should raise an alert to people familiar with programming...
It might be merely an issue of how data is displayed, or it might eventually be rooted in deeper layers which might or might not have other side effects.

Anyone any comment?

Cheers,
   T
Post
Topic
Board Pools
Re: [100 TH] Slush's Pool (mining.bitcoin.cz); TX FEES + UserDiff; ASIC tested
by
TiborB
on 27/11/2013, 15:39:16 UTC
Quote from: TiborB on November 27, 2013, 03:31:46 PM
Hi,

rewards for blocks 271745, 271726 and 271685 were zeroed out just a minute ago for me, wonder if anybody else experiences the same...
I am a bit concerned since 271685 has only 4 confirmations left to mature. I know there was some database migration recently, so I assume this is only a transient issue.
Anyone else?

Cheers,
   T


As I see these blocks have been recalculated by now via proportional rewards (1 score per share), instead of the exponential slush method.
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Topic
Board Pools
Re: [100 TH] Slush's Pool (mining.bitcoin.cz); TX FEES + UserDiff; ASIC tested
by
TiborB
on 27/11/2013, 15:31:46 UTC
Hi,

rewards for blocks 271745, 271726 and 271685 were zeroed out just a minute ago for me, wonder if anybody else experiences the same...
I am a bit concerned since 271685 has only 4 confirmations left to mature. I know there was some database migration recently, so I assume this is only a transient issue.
Anyone else?

Cheers,
   T
Post
Topic
Board Pools
Re: [117Th] Eligius: ASIC, no registration, no fee CPPSRB BTC + 105% PPS NMC, 877 #
by
TiborB
on 14/10/2013, 15:10:03 UTC
Quote from: 600watt on October 14, 2013, 02:55:00 PM
i am new to this so please forgive if my questions are stupid or have been answered 100x before:


1) i have 6 miners (knc-hosted jupiters) running on eligius. when i check their individual speeds

2013/10/14 13:30: default: 578261.67 box21: 554642.53 box16: 578261.67 box17: 560343.7 box23: 612468.7 box22: 548941.36 675 seconds: 3.43e+6  this sums up to:

3430 Gh/s but they are running a total of less than 3200 . why is there a difference ?


2) in "shares rewarded" i get figures like 89,3 (as of last block)  and 91,5 % (estimated total)

why not 100 %  ?

thank you !


Take a look at this: http://eligius.st/~gateway/faq-page - it describes how reward is calculated on this pool and answers your second question (shelved shares).

Hope this helps,
   T
Post
Topic
Board Pools
Re: [97Th] Eligius: ASIC, no registration, no fee CPPSRB BTC + 105% PPS NMC, 877 #
by
TiborB
on 07/10/2013, 22:15:34 UTC
All my rigs got "connection interrupted" and switched to backup pool. Anybody else experiencing the same issue?
(I assume so since the pool total hashrate is dropping quickly...)

Cheers,
   T
Post
Topic
Board Pools
Re: [58Th] Eligius: ASIC, no registration, no fee CPPSRB BTC + 105% PPS NMC, 877 #
by
TiborB
on 07/10/2013, 19:15:26 UTC
Quote from: Rampion on October 07, 2013, 06:43:13 PM
I've been mining at Eligius for the last 3/4 days and I love the interface and the 0% fees, but isn't the variance extremely high?

I believe variance is high for slower minder due to the fact that min pdiff was increased from 1 to 2. At least that is how I explain my observation since it was bumped.

   T
Post
Topic
Board Mining (Altcoins)
Re: Swedish ASIC miner company kncminer.com
by
TiborB
on 08/09/2013, 09:06:32 UTC
Quote from: joae1975 on September 08, 2013, 06:38:13 AM
Quote from: the-skeptic on September 08, 2013, 06:11:34 AM

I also need to purchase a UPS to protect my miners. I was thinking of something like this:
http://www.newegg.com/Product/Product.aspx?Item=N82E16842106116

I like this, thanks!  Battery back up is pretty cool. I wander how well that works.  
I bought this PSU: http://www.newegg.com/Product/Product.aspx?Item=N82E16817171078
It was ~$50 cheaper when I got it.  I think we're driving up the price.

Edit:  APC makes some really good power protection products.  Problem is there are so many and I have no clue how to shop for one.  I may give them a call to see which one would be best for a Jupiter or two.  Also, no need for a battery back up now that I think of it.  If your power goes out, so does your internet.  With KNC products having internal mining software, how would this work?  Does it keep trying to connect to the internet without intervention?  I'm sure these questions can't be answered right away.  So I'm going to wait on this purchase.  Surge protectors are all we should need for now.

that's not right. If your power goes out but both your modem and router are on a UPS as well, why would your internet go out? I am mining with network devices backed by a UPS as well and I do not loose internet during a power outage. At least as long as the UPS can feed the beasts. You will need a beefy server-grade one like a SmartUPS.

Hope this helps,
   T
Post
Topic
Board Pools
Re: [12000 GH/s] Slush's Pool (mining.bitcoin.cz); TX FEES + UserDiff; ASIC tested
by
TiborB
on 04/09/2013, 12:06:43 UTC
Quote from: jarhed on September 04, 2013, 11:41:12 AM
Quote from: aurel57 on September 04, 2013, 09:18:53 AM
On another note, Diff did go up @30% again......

Wha? Poll Diiff or network?
Where's the estimate network Diff rise spreadsheet.......?

Check here for the next estimated diff & other stats: http://www.bitcoincharts.com/bitcoin/

   T
Post
Topic
Board Pools
Re: [12000 GH/s] Slush's Pool (mining.bitcoin.cz); TX FEES + UserDiff; ASIC tested
by
TiborB
on 31/08/2013, 19:27:06 UTC
Quote from: console_cowboy on August 31, 2013, 04:17:45 PM
Quote from: TiborB on August 31, 2013, 03:34:59 PM
Quote from: console_cowboy on August 31, 2013, 03:30:40 PM
Looks like blockchain.info is undergoing maintenance currently. Perhaps that is why blocks are showing up invalid? If Slush is using blockchain.info for verification (as it appears he might be), then this could be causing our invalid block issues.

actually, the first 2 were invalid at a time when blockchain.info was still up.

I wonder what mechanism they are using to pull the data from blockchain.info. If only part of the site was down, say the mechanism that feeds out block information, then it is possible this could have caused an error on the pool. Could also just be Slush's pool having some issues as well. I am very glad this is now fixed though.

Actually, I am rather surprised to see those blocks valid on blockchain.info, then after an outage as orphaned, then later as valid again. What I saw there made me draw premature conclusions...
I would not take if for granted that the pool uses blockchain.info services to decide if a block is valid (on the main chain, not orphaned) or not... AFAIK any bitcoin client can give you that information.
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Topic
Board Pools
Re: [12000 GH/s] Slush's Pool (mining.bitcoin.cz); TX FEES + UserDiff; ASIC tested
by
TiborB
on 31/08/2013, 15:37:26 UTC
Quote from: TiborB on August 31, 2013, 03:33:56 PM
Quote from: visdude on August 31, 2013, 03:21:07 PM
Make that three invalid blocks in a row.

I would guess this is a sign of work being done in the background. I believe these blocks are not invalid but marked as such on the pool level (so they do not interfere with rewards), so the operator has some headroom to fix things. We can confirm this once blockchain.info gets back up again.

Bockchain.info is back. My assumption was wrong, these blocks seem to be orphaned indeed. All 3.
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Topic
Board Pools
Re: [12000 GH/s] Slush's Pool (mining.bitcoin.cz); TX FEES + UserDiff; ASIC tested
by
TiborB
on 31/08/2013, 15:34:59 UTC
Quote from: console_cowboy on August 31, 2013, 03:30:40 PM
Looks like blockchain.info is undergoing maintenance currently. Perhaps that is why blocks are showing up invalid? If Slush is using blockchain.info for verification (as it appears he might be), then this could be causing our invalid block issues.

actually, the first 2 were invalid at a time when blockchain.info was still up.
Post
Topic
Board Pools
Re: [12000 GH/s] Slush's Pool (mining.bitcoin.cz); TX FEES + UserDiff; ASIC tested
by
TiborB
on 31/08/2013, 15:33:56 UTC
Quote from: visdude on August 31, 2013, 03:21:07 PM
Make that three invalid blocks in a row.

I would guess this is a sign of work being done in the background. I believe these blocks are not invalid but marked as such on the pool level (so they do not interfere with rewards), so the operator has some headroom to fix things. We can confirm this once blockchain.info gets back up again.
Post
Topic
Board Pools
Re: [12000 GH/s] Slush's Pool (mining.bitcoin.cz); TX FEES + UserDiff; ASIC tested
by
TiborB
on 31/08/2013, 10:29:38 UTC
Quote from: kabopar on August 31, 2013, 08:14:52 AM
Quote from: visdude on August 31, 2013, 06:30:09 AM
Well, it's back on but I got terribly shorted:

19826    2013-08-31 04:52:18    2:47:25    88406573    21795    0.00167814
Similar situation here

19826    2013-08-31 04:52:18    2:47:25    88406573    4316    0.00044992
Let's hope this will eventually be fixed.

Payout is not happening as usual either  (crossed my payout threshold more than an hour ago,
and it's still there.
Looks like Slush's attention is not on this pool, hope that he's well

+1, seems this is a global issue. 49 confirmations left for the block to mature, so there is still some time to get it fixed.
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Topic
Board Pools
Re: [12000 GH/s] Slush's Pool (mining.bitcoin.cz); TX FEES + UserDiff; ASIC tested
by
TiborB
on 08/08/2013, 05:42:45 UTC
Quote from: omegaflare on August 08, 2013, 12:26:50 AM
Sorry.. does butterflly lab support stratum mining/proxy? Thanks.

This is a rather basic question that does not really belong into this thread. You also failed to provide details on which product you mean. Please check here before posting the next question: http://www.catb.org/~esr/faqs/smart-questions.html

I assume you are not talking about BFL minirig, but other products. They are connected to a computer via USB and you need a mining software on the computer to use them. The mining software communicates with the pool over the network (or with bitcoind when mining solo), and uses the BFL hardware to solve cryptographic tasks. The BFL hardware is not aware of what protocol your software uses, it just crunches numbers as directed by the software. You should check which protocols are supported by the mining software of your choice. You will find that both stratum and getwork are supported by practically all the miners.

Make sure you read up on the topic - you could save yourself some frustration/headache.

Cheers,
   T
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Board Pools
Re: [12000 GH/s] Slush's Pool (mining.bitcoin.cz); TX FEES + UserDiff; ASIC tested
by
TiborB
on 05/08/2013, 12:59:12 UTC
Frankly, it is not irrelevant when you mined. This pool uses a reward calculation method where the value of each share you submit is calculated as a function of time elapsed since the start of the round.

scoreshare = exp(t/C)

where t is round duration in seconds, and C is a constant, currently 200. This means the value of each share is exponentially growing as time goes, so old share have significantly lower value compared to recent shares. If you stop mining while others don't, your part of total pool score for that round will decrease exponentially. This is public information, each pool publishes the method it uses to calculate rewards.  You can read the original post about this reward calculation method here: https://bitcointalk.org/index.php?topic=1976.msg50002#msg50002.

Unfortunately, many do not read before taking decisions and feel unjust afterwards.

Hope the pointer helps to get started,
   T
Post
Topic
Board Pools
Re: [12000 GH/s] Slush's Pool (mining.bitcoin.cz); TX FEES + UserDiff; ASIC tested
by
TiborB
on 31/07/2013, 17:21:04 UTC
Quote from: desired_username on July 31, 2013, 05:20:09 PM
Mining works, website down
website is up again.