Claymore's Dual Ethereum AMD+NVIDIA GPU Miner v15.0 (Windows/Linux)

[jstefanop]

So probability is not the only thing that matters.

Sorry, but your wrong. Probability is all that matters, and regardless what you think or see in the short term does not matter, so your point is not valid. Regardless of whether your solo or pool mining, the def fee wont change hard math. Over time, If you solo mine 100 blocks, 1 block will be missed due to the dev fee on average. If your on the pool your hashrate will be shown 1% less on average.

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[osnwt]

Over time, If you solo mine 100 blocks, 1 block will be missed due to the dev fee on average. If your on the pool your hashrate will be shown 1% less on average.

Yes, and if one has higher hashrate for the remaining 99%, then on the long run one will have more blocks found, say, not 100 but 105. Minus 1.05 lost blocks due to DevFee (1%), and still 103.95 blocks found on average.

[chup]

You quote my comment but what you write is not related with what you have quoted. Please read carefully before looking down on my education.

I'll try to explain my point once more: Losing shares in the 1-2% of pooled mining time is no big deal because the abundance of shares evens out. Losing 1-2% in solo mining can be a big deal because of the variance, unless you have a high hashrate that evens out your average. If the difficulty doesn't change at the end it will even out. Perfect. But difficulty is rising always. So probability is not the only thing that matters. Also if you mine solo, you are hashing blocks, and dev is hashing shares in his time. It is not as simple as it looks.

You're right, I'm quoting only the last post, because I don't like messages with whole conversation quotes. Yes, it would be more efficient from my side to just add @malandante at the beginning of the post. I was not looking down on Your education, I just asked You to repeat something - repetition is mother of study. The advice was in a way of You gaining something. Knowledge, higher hash rate, more ether... You got it wrong.

[navydude]

Does --farm-recheck need to be enabled on this or no?

[clintar2]

Every known stratum version is now supported directly at eth.cncoin.farm. Claymore's miner supported using -esm 0 1 or 2 . Can I get more people testing to verify it works ok for you?

Note: Pool fee will go to 1% after we hit the next block and it pays out.

[elzium]

In your opinion it doesn't matter if I hit a block or not? Then try to mine with your rigs off.

Good point, it doesnt matter if ur rig is running during devfee or is turned off, chances to find block for urself stay the same. So u have all 23 hours and 45 minutes a day for ur own mining and rest of the time is not yours. U give it away for a shovel.

[peoples]

@Claymore

my cards running without fan attached , so i get error

20:38:35:439    20896780        Failed to get fan speed info
20:38:35:439    20896780        Failed to get fan speed info

which is fine. But it seems that this error breaks the temperature read out. Always get zero temperature.

[malandante]

So probability is not the only thing that matters.

Sorry, but your wrong. Probability is all that matters, and regardless what you think or see in the short term does not matter, so your point is not valid. Regardless of whether your solo or pool mining, the def fee wont change hard math. Over time, If you solo mine 100 blocks, 1 block will be missed due to the dev fee on average. If your on the pool your hashrate will be shown 1% less on average.

In the theory it is the only thing that matters but I think there are other things to consider aside from theory.

Let's think about a possible scenario: I mine solo with my 300 mh/s and I should hit one block every 1.5 days. If 1.5 days pass and I didn't hit a block, then I can say I missed a block. This can be due to dev time or just to bad luck, let's say it is due to dev time. Then I need to find a block "within time" the next 99, on average. This means that, if everything goes on average, after 150 days my figures will be correct. What if, by chance, I miss 2 blocks due to dev fee? Then I need luckier times or I will go to 300 days to even out.

When the hashrate is so little as mine, it is possible that you need a lot of time for your figures to even out if you had bad luck. And POW is not forever. Is this a correct thought?

If it is not a wrong thought, then there is a hashrate threshold below which it is dangerous to solo mine with CDM because you risk to not even out in case of bad luck. And then for the real mining, not the theory, probability is not only thing to take into account. Please I insist, I am not a math guy, correct me.

[Claymore]

@Claymore
my cards running without fan attached , so i get error

20:38:35:439    20896780        Failed to get fan speed info
20:38:35:439    20896780        Failed to get fan speed info

which is fine. But it seems that this error breaks the temperature read out. Always get zero temperature.

It is because miner drops any temp/fan related actions if there is any error because it can cause problems in further calculations, for example, miner must know fan speed if you specified temperature management, or if remote control asked it.
It is possible to implement more complex logic, but currently you are the first person that shows me this error. I'm curious about your hardware and cooling.

[malandante]

You quote my comment but what you write is not related with what you have quoted. Please read carefully before looking down on my education.

I'll try to explain my point once more: Losing shares in the 1-2% of pooled mining time is no big deal because the abundance of shares evens out. Losing 1-2% in solo mining can be a big deal because of the variance, unless you have a high hashrate that evens out your average. If the difficulty doesn't change at the end it will even out. Perfect. But difficulty is rising always. So probability is not the only thing that matters. Also if you mine solo, you are hashing blocks, and dev is hashing shares in his time. It is not as simple as it looks.

You're right, I'm quoting only the last post, because I don't like messages with whole conversation quotes. Yes, it would be more efficient from my side to just add @malandante at the beginning of the post. I was not looking down on Your education, I just asked You to repeat something - repetition is mother of study. The advice was in a way of You gaining something. Knowledge, higher hash rate, more ether... You got it wrong.

Thanks for the clarification and sorry for my misunderstanding. Please read the comment to jstefanop's post.

[tlmoscow]

It is possible to implement more complex logic, but currently you are the first person that shows me this error. I'm curious about your hardware and cooling.

Second is here . Same situation, banch of cards without default cooling.

[chup]

Thanks for the clarification and sorry for my misunderstanding. Please read the comment to jstefanop's post.

You're right about threshold hashrate for solo-mining, with very small hashrate and fast difficulty rise. But wrong that it is affected by CDM for more than devfee time percentage.

[navydude]

Just wondering can it be more profitable to solo mine. I have been mining on ethermine.org but its a set payout. It doesnt seem like luck is involved at all. Im still rather new to mining but can someone explain. I have about 260mh so im not sure solo would benefit me either.

[Claymore]

So probability is not the only thing that matters.

Sorry, but your wrong. Probability is all that matters, and regardless what you think or see in the short term does not matter, so your point is not valid. Regardless of whether your solo or pool mining, the def fee wont change hard math. Over time, If you solo mine 100 blocks, 1 block will be missed due to the dev fee on average. If your on the pool your hashrate will be shown 1% less on average.

In the theory it is the only thing that matters but I think there are other things to consider aside from theory.

Let's think about a possible scenario: I mine solo with my 300 mh/s and I should hit one block every 1.5 days. If 1.5 days pass and I didn't hit a block, then I can say I missed a block. This can be due to dev time or just to bad luck, let's say it is due to dev time. Then I need to find a block "within time" the next 99, on average. This means that, if everything goes on average, after 150 days my figures will be correct. What if, by chance, I miss 2 blocks due to dev fee? Then I need luckier times or I will go to 300 days to even out.

When the hashrate is so little as mine, it is possible that you need a lot of time for your figures to even out if you had bad luck. And POW is not forever. Is this a correct thought?

If it is not a wrong thought, then there is a hashrate threshold below which it is dangerous to solo mine with CDM because you risk to not even out in case of bad luck. And then for the real mining, not the theory, probability is not only thing to take into account. Please I insist, I am not a math guy, correct me.

Your point of view is wrong but it seems it's a complex task to prove that to you. I will try one more time.
For example, you mine for one hour with some hashrate. Within this time there is some probability to find a block.
After that, you mine for 59 minutes with the same hashrate. Will you agree that the probability to find a block now is less by 1/60? If you agree, you must also agree that 1% devfee time reduces probabilty to find a block within any time with any hashrate by 1%.
If you don't agree, it means that you think that 1% of time means more than 0.01 of 100% time - I can advice you to read some book about probability theory. Before that, don't even reboot your rig because you will lose all blocks because of missed 1 minute of mining

[Claymore]

It is possible to implement more complex logic, but currently you are the first person that shows me this error. I'm curious about your hardware and cooling.

Second is here . Same situation, banch of cards without default cooling.

Ok, I will improve code so you will be able to see temperature if you specified "-tt 1".

[polylogic]

first of, great miner, i love it

ive tried it with shift and expanse but it didnt work maybe you can add it

today ive run into a problem and im not sure if its app related.
i hope someone here had an idea since google isnt a big help. (ill the search the forums next)

i ran the dual miner for several days on a 5 gpu rig.
no problems.
today i tried to install a 6th GPU, after some minor problems (always check your cable connections twice at least^^)
i managed to get all 6 gpus to show up in my linux terminal.

but when i run ethdcrminer64 it stops right after discovering the pools,
right befor checking the gpus and quits with a german error message
sorry i have no log right now.. i stopped working for today ^^
and by now i forgot the real message xD but it was something "speicher zugriffs fehler, schreibe in datei"
-> memory access failure (writing to file)

ill edit this later with the real error log.


what i didnt do:
i didnt run the env variables:
setx GPU_FORCE_64BIT_PTR 0
setx GPU_MAX_HEAP_SIZE 100
setx GPU_USE_SYNC_OBJECTS 1
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_SINGLE_ALLOC_PERCENT 100
setx CL_DEVICE_MAX_MEM_ALLOC_SIZE 2147483648

maybe max_mem_alloc could have fixxed it.
its too late to try today.
maybe the error is something different and i need some help to figure it out.

rig data:
asrock h61 btc pro
6x r9 380x
8gb ram
usb3 riser
2x 750w quality psu

i also suspect it could have something to do with power..

fyi, asrock h81 btc pro doesnt work with 2 psu (another problem miner argh)
i hope someone has an idea what may cause the trouble and that its only env variables xD, thanks

[osnwt]

I have been mining on ethermine.org but its a set payout. It doesnt seem like luck is involved at all.

A pool has huge hashrate comparing to one miner, the law of large numbers works here (https://en.wikipedia.org/wiki/Law_of_large_numbers). That means less variance in a number of shares found by pool. It finds them so many per hour so you don't see any luck. But mining solo, if your hashrate is little, you may find many blocks in a day and them find nothing in a week.

Also, say, DwarfPool uses HBPPS (hour-based pay per share). It gets some Ethers for an hour, then calcluates number of shares submitted in this hour, and distributes Ethers proportionally to shares of each miner. Payment depends on (1) percent of shares submitted by you (based on total shares per hour and your shares) and (2) number of blocks found (and payments for them).

Ethermine uses PPLNS (pay per last N shares). It calculates moving average of your shares in last hour (60 minutes) and uses this average to distribute Ethers from every block. Since it uses average, your payments are instant (calculated after every block, not in the end of an hour), so you see a smooth stream of payments after the 1st block found since you started. Again, it works for large numbers (hashrates), for small ones you will see how the luck is involved.

[osnwt]

fyi, asrock h81 btc pro doesnt work with 2 psu (another problem miner argh)

Can you explain this in details, I am going to use one server PSU for cards and one PC PSU for H81 BTC Pro just bought. Any issues?

[dagarair]

fyi, asrock h81 btc pro doesnt work with 2 psu (another problem miner argh)

Can you explain this in details, I am going to use one server PSU for cards and one PC PSU for H81 BTC Pro just bought. Any issues?

I have 13 Miners all with that board all with dual power supplies.  It works like a champ!  I have a 1300 that runs 5 cards and a 500 that runs 1 card and the accessories, mb etc the 500 Watt pulls 392 watts dual mining on R9 380 4gb

[peoples]

It is possible to implement more complex logic, but currently you are the first person that shows me this error. I'm curious about your hardware and cooling.

Second is here . Same situation, banch of cards without default cooling.

Ok, I will improve code so you will be able to see temperature if you specified "-tt 1".

Thanks man !