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Author Topic: [XPM] [ANN] Primecoin High Performance | HP14 released!  (Read 397586 times)
FoldingTime
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September 15, 2013, 10:15:44 PM
 #2201

What's the CPD you are getting ?
Want to see if the formula used to "predict" blocks has actually any meaning, although variance can be a bitch
HP10 shows 2.13 CPD
Trillium
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September 15, 2013, 10:45:53 PM
 #2202

What's the CPD you are getting ?
Want to see if the formula used to "predict" blocks has actually any meaning, although variance can be a bitch

FWIW I have a total of about 3 chainsperday on HP11 across many machines. At current diff I only see about one block per day or less.

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ivanlabrie
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September 16, 2013, 02:41:00 AM
 #2203

What's the CPD you are getting ?
Want to see if the formula used to "predict" blocks has actually any meaning, although variance can be a bitch

FWIW I have a total of about 3 chainsperday on HP11 across many machines. At current diff I only see about one block per day or less.

Did you try beeeeer.org to compare profitability?
akspa
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September 16, 2013, 03:31:50 AM
 #2204

I'm back to solo mining on my main rig, as it seems that hp11 is finding blocks a bit more steadily than pooled mining (not to mention, beeeeer's miner doesn't seem to generate anything for me).
Trillium
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September 16, 2013, 03:55:01 AM
 #2205

What's the CPD you are getting ?
Want to see if the formula used to "predict" blocks has actually any meaning, although variance can be a bitch

FWIW I have a total of about 3 chainsperday on HP11 across many machines. At current diff I only see about one block per day or less.

Did you try beeeeer.org to compare profitability?

Yes but it seems to pay less than solo. There's an extra problem with beeeeer: it's still underdevelopment. This means regular server downtime (at least while I was using it) which means miners eating power until you check and restart them. Then again that also can happen with solo mining: i've found that network interruptions can cause the software to stop detecting new blocks and it simply sits there at 100% load, but it only does this sometimes.

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FoldingTime
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September 16, 2013, 08:39:14 AM
 #2206

What's the CPD you are getting ?
Want to see if the formula used to "predict" blocks has actually any meaning, although variance can be a bitch
HP10 shows 2.13 CPD
Just upgraded to HP11 and is showing 1.19
ivanlabrie
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September 16, 2013, 10:25:01 AM
 #2207

Mikaelh said HP11 introduced a fix which made CPD look less impressive, but is more accurate. First page....
ReCat
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September 16, 2013, 02:47:43 PM
 #2208

What is this mythical CPD everyone is talking about? I can't find a mention of it on the first page. (CTRL+F ing)

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coin@coin
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September 16, 2013, 03:00:42 PM
 #2209

What is this mythical CPD everyone is talking about? I can't find a mention of it on the first page. (CTRL+F ing)

It's Chains Per Day.  Smiley
cabin
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September 16, 2013, 06:55:32 PM
 #2210

Cool, the BiTwin change is working out for me:

Probable prime chain found for block=5afbda4c541b246958922fa448feb4820025e29025b70af4bd7a869e4e6f9f01!!
  Target: 09.de5a9f
  Chain: TWN09.ffffff
***BLOCK Long chain mined: 9.9999999, 31

That is a lot of 9's though in the fractional part.. just curious if that is some sort of bug, coincidence, or some side effect of bi-twin chains. I think I've seen a few that are all 9's for the fractional part.
Ifaistos
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September 16, 2013, 08:54:13 PM
 #2211

What's the CPD you are getting ?
Want to see if the formula used to "predict" blocks has actually any meaning, although variance can be a bitch
HP10 shows 2.13 CPD
Just upgraded to HP11 and is showing 1.19

with 1.19 that would translate to a block every 6.3 days or around 5 blocks a month
with 2.13 is a block every 3.5 days or 8 blocks a month

The 2nd seems closer to what you actually got, but calculated with current difficulty (.8680)not the difficulty from prev month
Ifaistos
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September 16, 2013, 09:02:31 PM
 #2212

What's the CPD you are getting ?
Want to see if the formula used to "predict" blocks has actually any meaning, although variance can be a bitch

FWIW I have a total of about 3 chainsperday on HP11 across many machines. At current diff I only see about one block per day or less.

That would be about 1 block every 2.5 days per machine or about 12 blocks per month
How many machines are you running? looks like it takes around 5 to get 1 block per day
spoid
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September 16, 2013, 09:38:35 PM
 #2213

is there a thread somewhere where we collect different paramters (sievesize etc) for different CPU models, as it is usually the way with scrypt and sha256 GPU wikis? or is it still every man for himself?

with great beard comes great liver. Reputation Thread: https://bitcointalk.org/index.php?topic=195803.0
Sunny King
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September 16, 2013, 09:48:42 PM
 #2214

Cool, the BiTwin change is working out for me:

Probable prime chain found for block=5afbda4c541b246958922fa448feb4820025e29025b70af4bd7a869e4e6f9f01!!
  Target: 09.de5a9f
  Chain: TWN09.ffffff
***BLOCK Long chain mined: 9.9999999, 31

That is a lot of 9's though in the fractional part.. just curious if that is some sort of bug, coincidence, or some side effect of bi-twin chains. I think I've seen a few that are all 9's for the fractional part.

I have seen those too. It just means the Fermat remainder is small, also evidence that the remainder distribution excluding 1 is still not uniform.
Trillium
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September 16, 2013, 10:35:26 PM
 #2215

What's the CPD you are getting ?
Want to see if the formula used to "predict" blocks has actually any meaning, although variance can be a bitch

FWIW I have a total of about 3 chainsperday on HP11 across many machines. At current diff I only see about one block per day or less.

That would be about 1 block every 2.5 days per machine or about 12 blocks per month
How many machines are you running? looks like it takes around 5 to get 1 block per day

6 machines mine 24/7 the fastest (unfortunately) is just a Core 2 Quad @ 2.93 GHz. I have some rackmount servers that come and go as I repair and test them, but most of those are not very new so are unlikely to exceed 1 CPD.

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Ifaistos
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September 16, 2013, 11:30:41 PM
 #2216

Currently i have 4 machines 1.5, 1, 2 x 0.25 running 24/7 for the last 3 days but no luck
I am building a "largish" litecoin farm with GPU's (working on an pci-e fpga card for litecoin also) and wanted to see if i can use the cpu's of the farm to mine another crypto-coin in parallel.
At the moment my "free-cycles" for going over the details of primecoin miners and looking for optimizations are rather limited but will look into it at first chance.
Trillium
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September 16, 2013, 11:52:49 PM
 #2217

Currently i have 4 machines 1.5, 1, 2 x 0.25 running 24/7 for the last 3 days but no luck
I am building a "largish" litecoin farm with GPU's (working on an pci-e fpga card for litecoin also) and wanted to see if i can use the cpu's of the farm to mine another crypto-coin in parallel.
At the moment my "free-cycles" for going over the details of primecoin miners and looking for optimizations are rather limited but will look into it at first chance.

Even with low process priority I found that primecoin generally reduces system performance possibly due to memory or bus bandwidth limitations. It was limiting my kh/s of my graphics cards as they mined and so I had to give them higher intensities to compensate and get them back up to normal kh/s.

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akspa
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September 17, 2013, 12:56:04 AM
 #2218

is there a thread somewhere where we collect different paramters (sievesize etc) for different CPU models, as it is usually the way with scrypt and sha256 GPU wikis? or is it still every man for himself?

I just created a wiki for this purpose. Feel free to join, and we can all work together to figure out the best settings for all the miners!

Official Announcement Thread: http://www.ppcointalk.org/index.php?topic=511.0

Site: xpmwiki.com
ivanlabrie
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September 17, 2013, 02:06:08 AM
 #2219

is there a thread somewhere where we collect different paramters (sievesize etc) for different CPU models, as it is usually the way with scrypt and sha256 GPU wikis? or is it still every man for himself?

I just created a wiki for this purpose. Feel free to join, and we can all work together to figure out the best settings for all the miners!

Official Announcement Thread: http://www.ppcointalk.org/index.php?topic=511.0

Site: xpmwiki.com

Thanks!
muto
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September 17, 2013, 09:28:38 AM
 #2220

I have a total of about 7 CPD (HP11) crunching. Since about a month ago I'm experiencing much, much lower blockrate. Currently it's about one block per 2-3 days. Wondering who finds all those blocks?

Also I noticed (since day 0) that my machines often find a few blocks in a row (over 1-3 days) and then find nothing for days/weeks. I even had 3 blocks within a few hours a few times. Can anybody confirm, that it is more likely to find a block when a block has been found in the past hours?  I can't believe this is pure luck.
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