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Author Topic: [4+ EH] Slush Pool (slushpool.com); Overt AsicBoost; World First Mining Pool  (Read 4377144 times)
slush
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May 28, 2012, 07:39:59 AM
 #5201

Payouts are still disabled, I came at home too late and it's always better to be fresh while handling with coins. I'm working on fix right now and payouts should be enabled very soon.

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May 28, 2012, 07:56:10 PM
Last edit: May 29, 2012, 06:19:11 AM by slush
 #5202

OK, BTC payouts working again (I just sent batch of all pending payouts), I'm working on NMC now.

Edit: NMC payouts works as well.

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May 30, 2012, 01:20:27 PM
 #5203

Can anyone explain the benefit of DGM over PPLNS?  Pool hopping is also prevented by PPLNS and seems like it would be much easier to implement.  From what I gather, DGM helps 'absorb' a little bit of variation but I would imagine that isn't as big a deal on a larger pool like Slush's. 
PPLNS can work too, but there are a few differences to consider:
1. What most people refer to as PPLNS is the naive variant which isn't completely hopping-proof. There are correct variants but they're slightly harder to implement.
2. PPLNS is potentially more resource-intensive, as it requires a history of shares - DGM only strictly requires keeping track of the score of every miner.
3. DGM can absorb variance, which may or may not be needed or used but it's nice to have the option.
4. In DGM the decay is gradual rather than abrupt, this can be seen as a pro or a con depending on taste.

There's also shift-PPLNS and shift-DGM which work better with a parallel architecture.

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May 31, 2012, 06:43:18 PM
 #5204

There's also shift-PPLNS and shift-DGM which work better with a parallel architecture.

Could you explain how shift-PPLNS and shift-DGM work ? I have seen you use that expression before, but I have never seen you explain it. Are you refering to the version of DGM where the logarithms of the scores are used ?  Using 2 as a logarithm base, addition of exponents would be equivalent to binary shifting.

Can you have distributed DGM with per-node worker scores and "s" variable and then add all the nodes together later ?

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June 01, 2012, 09:09:16 AM
 #5205

I have seen you use that expression before, but I have never seen you explain it.
That's because I was never asked Wink

Shift-PPLNS is a method invented by DrHaribo of BitMinter which I then refined a bit. I've discussed it briefly in this comment as well as section "PPLNS variants" of AoBPMRS.

Shift here refers not to bit-shift, rather to worker shifts. Shares are grouped into shifts, and miners are rewarded for the shares they submitted in last few shifts rather than the last N shares. Since all shares submitted within a shift are equivalent, there's no need to store the individual shares, rather just the total shares submitted per miner per shift (or more accurately the total pB).

By using a gap of 1 shift between work and reward, it also doesn't matter (on average) whether a share is counted as belonging to one shift or the next. So this works in parallel - each pool instance tallies work per shift for the miners connected to it (because of the gap, it is ok to be a little out of sync with the other instances wrt which is the current shift) and then compute rewards after the fact with the summed data.

Shift-DGM is applying the same principles to DGM. I've never actually worked out the details (again, due to lack of interest), but it should work. The idea is that shares will decay only between shifts rather than within a shift, so you can do it in parallel with out-of-sync instances. Within a shift it's a simple tally of the total pB of shares submitted.

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June 01, 2012, 09:12:30 PM
 #5206

My appologies for recent downtime, it was database maintenance (second and final part). Downtime was less than 10 minutes.

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June 01, 2012, 11:03:18 PM
 #5207

My appologies for recent downtime, it was database maintenance (second and final part). Downtime was less than 10 minutes.

Was EXACTLY 10 minutes by my watch. But who is counting?
:p
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June 02, 2012, 02:15:02 PM
 #5208

This is a great pool!
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June 03, 2012, 11:24:44 PM
 #5209

Is there any reason why my machine running cgminer (latest version) has my hash rate @ 760mh/s yet the average over the past few weeks has always been down around 550 on the slush pool page??

has the pool been suffering alot of down time? my end seems ok
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June 03, 2012, 11:28:11 PM
 #5210

The hash rate shown on the account page has been consistently 20-25% below what my miner tells me it is, I never really gave it much thought. One or the other, or both, are wrong.
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June 04, 2012, 03:28:07 PM
 #5211

The hash rate shown on the account page has been consistently 20-25% below what my miner tells me it is, I never really gave it much thought. One or the other, or both, are wrong.

I've never seen that issue myself.  When I add up all my miners, it always equals what I see on my account page.  I use guiminer, not cgminer tho...

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slush
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June 05, 2012, 07:58:59 AM
 #5212

The hash rate shown on the account page has been consistently 20-25% below what my miner tells me it is, I never really gave it much thought. One or the other, or both, are wrong.

Well, that hashrate on the profile page is just an estimation; hashrate given by your miner will be much more exact. Actually as far as you don't see any connection issues in the miner, don't worry. Pool indicates accepted or rejected shares directly in getwork response, so all possible issues should be catched by your miner.

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June 05, 2012, 08:00:48 AM
 #5213

has the pool been suffering alot of down time? my end seems ok

As far as I remember, there were two noticable downtimes in last week, both because database maintenance. First was around 30 minutes, second exactly 10 minutes (crunchyferrett :-P). I don't think those two outages can affect overall hashrate in some significant way.

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June 09, 2012, 02:20:30 PM
 #5214

Slush:

If you get an opportunity, there are two requests for additional details on the website.
1: Can a date/time localization be added?
2: In the statistics page, can an additional field be populated showing the number of shares submitted for past blocks?

Thank you

CrunchyFerrett
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June 11, 2012, 01:52:48 AM
 #5215

I needed some break from work on backends, so today I launched multilanguage support for website. Not all texts are currently translated, especially some emails, but I'll fix it during the time. Currently English, German, Russian and Czech translations are available. If you want pool site in your language and you want help me with it, let me know :-). I'm especially looking for some French or Spanish native speaker...

1: Can a date/time localization be added?

Yes, it's already on my list. However it will come after DGM.

Quote
2: In the statistics page, can an additional field be populated showing the number of shares submitted for past blocks?

Yes, this is part of DGM update which is planned in next days.

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June 11, 2012, 10:47:43 AM
 #5216

Is anyone else having high reject rates after you get a longpoll?
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June 11, 2012, 03:18:06 PM
 #5217

Is anyone else having high reject rates after you get a longpoll?

What does "high" mean? Is you miner connected to LP port? What miner do you use? Please post me a PM.

Edit: I re-checked LP mechanism and everything seems fine. Also all my rigs connected on the pool have pretty low stale ratio (~0.15%).

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June 13, 2012, 03:16:30 AM
 #5218

facebook page for recent updates and news? i hate facebook. i would rather get updates and news here pls

https://www.buytrezor.com?a=55c37b866c11   well sir, I like it!
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June 13, 2012, 08:45:30 AM
 #5219

And if you start using facebook for updates and news, I would like to follow the pool on twitter. Maybe it is possible to open an account there as well. Just a wish  Smiley

Greetings
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June 13, 2012, 02:43:06 PM
 #5220

And if you start using facebook for updates and news, I would like to follow the pool on twitter. Maybe it is possible to open an account there as well. Just a wish  Smiley

Not everyone has (or wants, or is going to set up) Facebook and/or Twitter accounts.

The main source of news for the pool should always be either [1] the pool website itself; or [2] this forum. Sure, FB and Ttr info can be added as a secondary source, but should never marginalize the main ones.
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