Difficult questions : Mining pool and 2 similar miners --> Same shares ???

[stigo]

Hello,

I didn't find answers to my questions on the web, can you help please :

SUPPOSE there are two antminers S9i ( for example)  mining on a pool

SUPPOSE that the pool sends the same work to these miners and the difficulty is the same for both.

-Will the miners' shares be exactly the same in this case ? (I mean with the same delays and hashes)


Now suppose that the pool REsends the same work to an antminer

-Will the shares be exactly the same as before ? (I mean with the same delays and hashes)


Thanks

[kano]

Simple answers:
The pool wont send the same work to two different miners.

They'll each have a different ID in the coinbase sig data.

When using a proxy with only one connection to a pool, but the proxy is providing work to multiple miners, the proxy also supplies a different coinbase sig to each miner.

Edit: firstly read here: https://kano.is/index.php?k=minedet
Then also read the other Help pages on my pool.

[stigo]

The pool wont send the same work to two different miners.

They'll each have a different ID in the coinbase sig data.

When using a proxy with only one connection to a pool, but the proxy is providing work to multiple miners, the proxy also supplies a different coinbase sig to each miner.

I know that the pool will not send the same work , but lets suppose it's the case ...

But you said each miner has ID on coinbase sig data ...is it a unique ID for each miner ? if i sell my miner to Mr x . when he mines with it on the same pool , will the mineer keep the same ID ?

[kano]

...
But you said each miner has ID on coinbase sig data ...is it a unique ID for each miner ? and the pool has it ?

a different ID

Which of course the only way for the pool to do that is if the pool knows the ID

[stigo]

...
But you said each miner has ID on coinbase sig data ...is it a unique ID for each miner ? and the pool has it ?

a different ID

Which of course the only way for the pool to do that is if the pool knows the ID

ok

 if i sell my miner to Mr x .
when Mr x mines with it on the same pool , will the miner keep the same ID ?
who create this ID ?

[NotFuzzyWarm]

It is not a hardware ID. It is an ID generated by the pool when a miner connects to it.

[kano]

In simple terms, that are obvious:
A miner connects to a pool.
The pool chooses an ID for the miner.
The pool provides work to the miner.
If the miner ever disconnects and reconnects, it will get a new ID.

[stigo]

Yes I understand this . Just I was confused by the first reply .

That's logical : pool creates ID for each miner connected on the pool for simply know who is who ...

But this is not my initial question ...


I mean if the pool send the same work ( It's a supposition ) to similar miners ( same ref and same firmware) . Will their shares be equal ( same hashes and same delays between hashes ) ?

And if the miner receives the same work as before , will the share be exactly the same as before ?

[NotFuzzyWarm]

The pool will NOT send the same work... If it does then there is something seriously wrong with their software...

[kano]

.. and even more relevant, the pool luck will take a massive obvious dive.

To be blunt, I've no idea why anyone would waste so much time on the question that's answered in my first post.
Assuming all pool software developers are idiots seems like a pointless assumption in the first place, but my first reply answers that anyway.

Simple answers:
The pool wont send the same work to two different miners.

They'll each have a different ID in the coinbase sig data.
...

... and no matter how hard you stare at two miners in front of you, they are indeed two different miners.

[stigo]

The pool will NOT send the same work... If it does then there is something seriously wrong with their software...

I know that ...

So let suppose that there are 2 solo miners .
They started mining at the same time with the same hardware /firmware.

Will their share be equal ( or quasi equal with more than 99% similarities on hashes results and delays between hashes) ?

[kano]

The pool will NOT send the same work... If it does then there is something seriously wrong with their software...

I know that ...

So let suppose that there are 2 solo miners .

They started mining at the same time with the same hardware .

Doesn't matter if it's the same hardware, the same network cable, the same air flowing through them, or even the same colour paint on the walls.
It has nothing to do with it.

Will their share be equal ( or quasi equal with more than 99% similarities on hashes results and delays between hashes) ?

It only matters that the work is not exactly equal.
Nothing else.

[stigo]

.. and even more relevant, the pool luck will take a massive obvious dive.

To be blunt, I've no idea why anyone would waste so much time on the question that's answered in my first post.
Assuming all pool software developers are idiots seems like a pointless assumption in the first place, but my first reply answers that anyway.

Simple answers:
The pool wont send the same work to two different miners.

They'll each have a different ID in the coinbase sig data.
...

... and no matter how hard you stare at two miners in front of you, they are indeed two different miners.

Thank you for the reply but it doesn't answer the question ...

[stigo]

The pool will NOT send the same work... If it does then there is something seriously wrong with their software...

I know that ...

So let suppose that there are 2 solo miners .

They started mining at the same time with the same hardware .

Doesn't matter if it's the same hardware, the same network cable, the same air flowing through them, or even the same colour paint on the walls.
It has nothing to do with it.

Will their share be equal ( or quasi equal with more than 99% similarities on hashes results and delays between hashes) ?

It only matters that the work is not exactly equal.
Nothing else.

Ok ok , I understand , so the same "probleme" as for a pool. Bitcoin network will not send the same work EDIT( no, bitcoin network doest not send work like pool !)
Thanks , so the answer to the initial question is not here ...

[kano]

...
Thank you for the reply but it doesn't answer the question ...

So is your question:
How many pools were coded by idiots and are losing money because they don't send different work to two different miners?

Sorry I don't know the answer to that.

Note, this section of the forum is called

Bitcoin Forum > Bitcoin > Mining > Pools

[NotFuzzyWarm]

Thank you for the reply but it doesn't answer the question

Yes it does. The question is a non-existent case that will never occur.

[stigo]

Thank you for the reply but it doesn't answer the question

Yes it does. The question is a non-existent case that will never occur.

I used on my first question the word: "suppose" that  ...

[kano]

If instead your question isn't pool related. and you want to know how mining software that does solo mining, avoids the problem of generating the same work, when you run two solo miners, then you need to ask that in the "Mining Software" section here:
https://bitcointalk.org/index.php?board=42.0

[stigo]

If instead your question isn't pool related. and you want to know how mining software that does solo mining, avoids the problem of generating the same work, when you run two solo miners, then you need to ask that in the "Mining Software" section here:
https://bitcointalk.org/index.php?board=42.0

Ok thank you I will ask there too

But it's related to pools also .