[ANN] profit switching auto-exchanging pool - www.middlecoin.com

[turner3d]

I was having the "SICK" issue on my R9 290s quite a bit due to my settings. I was running the engine @ 1000 and the memory @ 1500 - the rig would run for about 2 hours before one of the cards would get sick. I backed the engine speed down to 985, and not only did the frequent crashes go away, I actually gained about 6 kh (from 856 per card to 862).

[jam3zs]

Soooo I noticed it said "SICK" (R9 290) a few mins ago and thought it was weird that i had never noticed it.
Then a few mins later I saw the temp drop so i checked again and now it says "DEAD".
A full restart of the rig seems to have it back running but I don't know what would have caused it? Anyone seen this before?

Either:

1) Too high overclock.
2) Too high heat.
3) Too high intensity.
4) GPU is dying.

Soooo I noticed it said "SICK" (R9 290) a few mins ago and thought it was weird that i had never noticed it.
Then a few mins later I saw the temp drop so i checked again and now it says "DEAD".
A full restart of the rig seems to have it back running but I don't know what would have caused it? Anyone seen this before?

Did you overclocked your GPU ?
This happen to me when the card voltage is too low compared to my overclocking.

It also happens around 2-3 times a month for no reason.

Well this is the config for that particular card:

Code:

 
 -I 20 \
 -w 512 \
 --gpu-threads 1 \
 --thread-concurrency 32765 \
 --gpu-engine 990 \
 --gpu-memclock 1500 \
 --gpu-powertune 11 \
 --gpu-vddc 1.025 \
 --device 3 \
 --remove-disabled \
 --temp-cutoff 99 \
 --temp-overheat 95 \
 --temp-target 85 \
 --auto-fan \
 --gpu-fan 50-85

It doesnt give any HW errors like this.
It does run hot but all 290's run hot (85c - 90c, although I have seen it go over 95c once before).
It's got it's own psu to it's self.

Hope it's not on the way out, not had it long lol.

[ratty]

Use a program like CGWatcher that restarts it if it gets marked as "dead" or doesn't submit any shares in X minutes. It can also reboot the computer if a restart fails to fix it.

[Judgment]

jam3zs you should increase voltage or lower engine, simple as that.

Btw, we have reached moon it seems 

http://middlecoin2.s3-website-us-west-2.amazonaws.com/

[SimonG]

jam3zs you should increase voltage or lower engine, simple as that.

Btw, we have reached moon it seems  

http://middlecoin2.s3-website-us-west-2.amazonaws.com/

Doesn't matter when I've lost 100 $ today.

And also remember that since BTC value has fallen today some people will think we have earned more money compared to previous days but thats not the case.

[pindis]

jam3zs you should increase voltage or lower engine, simple as that.

Btw, we have reached moon it seems 

http://middlecoin2.s3-website-us-west-2.amazonaws.com/

Doesn't matter when I've lost 100 $ today.

Then wait it out. it's gonna reach that soon again (Probably, if not i'm fucked too )

[jam3zs]

fuck!! 5 mins later and it's dead again!

I think i will bring the gpu engine down and it needs a new psu anyway, the one it got is some random shitty old one i found laying around.

Just weird that it's only just started doing it.

[ButterBread]

I'm still trying to figure out why some people had such a low payout from last Saturday, so I made a nice comparison :



As you can see, all miners have more or less the same hashrate. Yet they have a very different payout and remaining balances (for the immature/unechanged balances).

Some observations I made :

1)
It looks like the pool is using the unexchanged balance as a multiplier, i.e. to play with. The only ones having a decent payout or the miners that had a lot of unexchanged carried over from the day before (miners 2, 5 and 6). Note that the actual unexchanged balance remained the same at the end of the day. Don't know what to think of that..

2)
Some miners had part of their unexchanged balance changed to their balance just before the payout whilst others hadn't (miner 1 vs. miner 0). What gives?

3)
Miner 3 is a nice example of a miner that basically started the day with a clean slate. Yet it got a better deal than miner 0, even though its hash rate is lower. Huh?

As you may have guessed, miner 0 is me.. I changed from EU to US about halfway through Saturday as was recommended by the pool operator in this thread at the time.


I really don't understand what was going on last Saturday, but judging from the above comparison it doesn't look right to me.

I am worried that there are bugs in the system that are costing some miners their due payout. Also, if the pool is using the unexchanged balance as monopoly money to increase profits, fine - but why isn't this the same for everyone?

---

I've also tried to relate the graph for the pool as a whole to the individual miners. Somehow I would expect them to be very similar except for the scale :



Yet they do not look similar at all, except for the miners that got a 'regular' payout.

Anyone want to share his/her insights?

[hodger]

The bug we had, where we got 1% extra rejects that said "duplicate share" has been resolved.

Awesomes....

[ellave]

I'm still trying to figure out why some people had such a low payout from last Saturday, so I made a nice comparison :



As you can see, all miners have more or less the same hashrate. Yet they have a very different payout and remaining balances (for the immature/unechanged balances).

Some observations I made :

1)
It looks like the pool is using the unexchanged balance as a multiplier, i.e. to play with. The only ones having a decent payout or the miners that had a lot of unexchanged carried over from the day before (miners 2, 5 and 6). Note that the actual unexchanged balance remained the same at the end of the day. Don't know what to think of that..

2)
Some miners had part of their unexchanged balance changed to their balance just before the payout whilst others hadn't (miner 1 vs. miner 0). What gives?

3)
Miner 3 is a nice example of a miner that basically started the day with a clean slate. Yet it got a better deal than miner 0, even though its hash rate is lower. Huh?

As you may have guessed, miner 0 is me.. I changed from EU to US about halfway through Saturday as was recommended by the pool operator in this thread at the time.


I really don't understand what was going on last Saturday, but judging from the above comparison it doesn't look right to me.

I am worried that there are bugs in the system that are costing some miners their due payout. Also, if the pool is using the unexchanged balance as monopoly money to increase profits, fine - but why isn't this the same for everyone?

---

I've also tried to relate the graph for the pool as a whole to the individual miners. Somehow I would expect them to be very similar except for the scale :



Yet they do not look similar at all, except for the miners that got a 'regular' payout.

Anyone want to share his/her insights?

Very interesting analysis would be good to hear some expert opinions

[JCviggen]

It's difficult to extrapolate much real info, because we don't know who was mining on which server, and at which point in the day did some of them switch from eu to us or vice versa. Some people use failover others load-balance. These things make a difference that is not detectible via hashrate alone.
Certainly when I heard EU was switching to straight LTC I would have moved my rigs if I had access to them. I had a terrible payout by staying EU. Other differences appear mostly a case of unexchanged balance being exchanged, or not, which is not an issue over a longer time period anyway.


H2O clearly does not feel like giving much info so all we can do is guess, pretty futile really. If we find a better place to mine we'll leave. For the time being, here we are.

[chilin_dude]

Butter bread, look at where the unexchanged STARTED the day for miner 2,5,6 that got the good payouts. For those 3 the unexchanged started and finished the same or lower than the day.

Now look at your miner, miner 0, you started with near 0 and ended up with near 0.3. So you need to add taht 0.3 to your 0.32 you got paid out (since it will get paid at a later date). That makes 0.62
0.62 is pretty similar to miners 2,5,6 you refer to.

[ilic]

You people (luckily a minority) that start accusing H20 of stealing etc etc coz you have one bad payday sicken me.

When times are good you all love Middlecoin, then on the odd occasion we get a shitty payout you start bitching and moaning like the world is gonna end.

if you think you can do a better job do it yourself.  If not, mine with Middlecoin and shut the hell up.

If i see another "i could have made more mining LTC on my own" comment i'm gonna scream!

[envy2010]

Butter bread, look at where the unexchanged STARTED the day for miner 2,5,6 that got the good payouts. For those 3 the unexchanged started and finished the same or lower than the day.

Now look at your miner, miner 0, you started with near 0 and ended up with near 0.3. So you need to add taht 0.3 to your 0.32 you got paid out (since it will get paid at a later date). That makes 0.62
0.62 is pretty similar to miners 2,5,6 you refer to.

Pretty much what chillin' said. You need to add up the immature, unexchanged, and balance at the beginning and end of each day, and compare.

Also, this analysis is fundamentally flawed because mining is time-dependent. Run the miners on 6 new addresses for several days (STARTING AT THE SAME TIME) and compare those graphs. That would tell you a lot more.

[envy2010]

fuck!! 5 mins later and it's dead again!

I think i will bring the gpu engine down and it needs a new psu anyway, the one it got is some random shitty old one i found laying around.

Just weird that it's only just started doing it.

You absolutely need a solid PSU, power issues cause endless frustrations. Once you know your PSU is good, try upping the voltage, lowering the clocks (and maybe different drivers) until it stops dying.

[hardergamer]

fuck!! 5 mins later and it's dead again!

I think i will bring the gpu engine down and it needs a new psu anyway, the one it got is some random shitty old one i found laying around.

Just weird that it's only just started doing it.

You absolutely need a solid PSU, power issues cause endless frustrations. Once you know your PSU is good, try upping the voltage, lowering the clocks (and maybe different drivers) until it stops dying.

I agree, dont use a cheep psu with that card!!, you could end up blowing the mboard/card/cpu 

[s4ndm4ns]

The bug we had, where we got 1% extra rejects that said "duplicate share" has been resolved.

Does it mean that its ok to go --no-submit-stale again?

[ButterBread]

You people (luckily a minority) that start accusing H20 of stealing etc etc coz you have one bad payday sicken me.

When times are good you all love Middlecoin, then on the odd occasion we get a shitty payout you start bitching and moaning like the world is gonna end.

if you think you can do a better job do it yourself.  If not, mine with Middlepool and shut the hell up.

If i see another "i could have made more mining LTC on my own" comment i'm gonna scream!

Huh? I hope that wasn't directed at me, I haven't accused anyone of stealing. Nor am I "bitching and moaning like the world is gonna end". Nor did I state that I think I can do a better job myself.

And middlepool? I though we were talking about middlecoin.

Middlepool, the pool were you got-a shut the hell up-a

[ilic]

fuck!! 5 mins later and it's dead again!

I think i will bring the gpu engine down and it needs a new psu anyway, the one it got is some random shitty old one i found laying around.

Just weird that it's only just started doing it.

You absolutely need a solid PSU, power issues cause endless frustrations. Once you know your PSU is good, try upping the voltage, lowering the clocks (and maybe different drivers) until it stops dying.

I agree, dont use a cheep psu with that card!!, you could end up blowing the mboard/card/cpu 

with a decent PSU you'll be able to lower the voltage more too.  I get the Sick/Dead miner occasionaly when i push voltages too low.

[ilic]

You people (luckily a minority) that start accusing H20 of stealing etc etc coz you have one bad payday sicken me.

When times are good you all love Middlecoin, then on the odd occasion we get a shitty payout you start bitching and moaning like the world is gonna end.

if you think you can do a better job do it yourself.  If not, mine with Middlepool and shut the hell up.

If i see another "i could have made more mining LTC on my own" comment i'm gonna scream!

Huh? I hope that wasn't directed at me, I haven't accused anyone of stealing. Nor am I "bitching and moaning like the world is gonna end". Nor did I state that I think I can do a better job myself.

And middlepool? I though we were talking about middlecoin.

Middlepool, the pool were you got-a shut the hell up-a

no not directed at you, mainly 1 poster who accuses h20 of stealing!

I too am interested in why payouts were lower, i just think some peoples reactions and comments are a bit harsh.  Sometimes we win, sometimes we lose, i'm confident H20 can do a better job than me choosing what coins to mine so i'll stick with him.

*edited my post, i meant middlecoin not middlepool, just a typo...