Topic: Claymore's Dual Ethereum AMD+NVIDIA GPU Miner v15.0 (Windows/Linux) - page 1249. (Read 6590757 times)

Hi
I'm pool operator of miningpoolhub.

Why does Claymore miner disconnects often from miningpoolhub ethereum?

Original eth-proxy works well on miningpoolhub and claymore is saying that it is compatible with eth-proxy.
I don't know actually what the problem is, but this is very weird behaviour.

MiningPoolHub ethereum uses vardiff and starts from quite low diff.
Maybe this is the main difference between other pools.


I don't know what the problem is in Claymore miner due to closed source.
Please fix some bug inside.

Ok, never mind I think, I just found this comment between the 165 pages of posts in this topic 
from Claymore himself


So I guess it is not yet in the 4.7 release

L.

Hi,

I'm a newby user, and a small user (only 1 machine, with 1 GPU at the moment, going to expand with a 2nd more powerful GPU soon)
AMD R9 380, giving me a steady 20-21Mh/s for ETH and 310-318 Mh/s for DCR

I've a question about dual mining:

I'm mining ETH on miningpoolhub.com and DCR on decredpool.org

I wanted to switch DCR mining to nicehash, but then most of the shares are rejected?
does anyone have an idea why this happens, what I can do about it?

I looked around the forum, but could not find more info on this subject immediately


Thanks

L

How to specify allcoins -1 option in epools.txt file?
I would like to mine it as reserve pool... so don't want to turn it on globally in config.txt..

And.. i know it was answered but:
How to turn on email-notification in epools.txt for such pools like dwarfpool:

Where ethminer command is:
ethminer.exe -G -F http://exp-us.dwarfpool.com:81/YOUR_WALLET/YOUR_WORKER/EMAIL
POOL: exp-eu.dwarfpool.com:8008, WALLET: 0MYETHADRESS123etc8/Worker, PSW: email??, ESM: ? and then?
It works without specify ESM but gives me only 70 and few percent of hashrate which should be...






Thanks!

I've been mining on us1.ethermine.org:4444 for a while with no problems...

The 8Pin PCIE connector is rated for 150W each. That is reason for the 7990 rated 375W = 150+150+75.

+3v and +3v will not short.  The issue is not the power, it's drawing that much power thru connectors, traces, pad, etc that were designed for less current.  It's important to keep paths in the circuit insulated from one another.  These paths were designed and rated, intended for the load.  This is why there is a max specified load, the components, pathways, connectors, traces, pads, etc all have an intend range.

A short circuit occurs when positive finds a straight path to ground.  If there were no other paths or traces nearby, a larger than intend load could only act as a fuse, zip and the connection is gone. 
In reality, there are plenty of pathways on a circuit board. They are really really close to each other.  So, what happens... the extra load causes excessive heat, lowering resistance until an actual short occurs between positive and negative. Positive straight path to ground.

The picture, you see the middle pin above the two +3v pins?  It is the -12v.  Usually, the ground is far away from the positive in a lot of plugs.  Had the -12v been by the +12 in this case, there would have been a much larger arc blast.  See, the -12v on this plug was the heat that lowered resistance, melting and the the +3v lanes had a path straight to ground. 

+3v to +3v would do nothing.  +3v straight to negative....you see the result

Interesting argument for the extra ground, though shouldnt it be 3/2 * 75W = 112.5W for the 8PIN?

Btw I have just finished new calc section for this merge mine: http://www.whattomine.com/eth_dcr
Will add the new mystery coin as well when released.

Sorry!!

Now, please excuse me if this was already mentioned, as I just did a quick look at last few pages, but there is something I don't understand about this incident.

The pins burned on that pic are +3.3V/Ground (ATX 24pin, pins 2,3). How could RX 480 possibly draw so much 3.3V from PCIe to burn the ATX pin? The biggest draw measured on that line was 5W (PCper), with others pointing even lower values (2.5W during benchmark).

EDIT: Also https://youtu.be/ZjAlrGzHAkI?t=773

Ya we stray a bit ot from time to time.  On the pcie. Reason the 8 pin can deliver more is the extra ground.  If you have had a pcie burn it's usually the ground side.  Since one wire is used to sense voltage and the other two are ground.  That coupled with the fact most psu come with 3 hot wires in the 6 pin pcie. So it can technically feed more thru the 12+ then the ground can return.  Yes there is some burnt off as heat but most comes back down the return. And if that isn't the same as the 12+  then you have meltdown.  Seen this many times now and that's the best I came up with as to why the 8 pin can deliver so much more and doesnt add anything more other than two more grounds and another voltage sensor.

Best regards
d57heinz

Its hard to stay on topic   We'll just have to wait until Claymore brings us that new sacrifice for the gods (new dual coin to mine).  Other than that, i'd love to mine on etherminer, but the damn 4444 port is not working.  anybody have any ideas for me, i didnt really try anything special yet.   etherpool works fine, but I'd rather have ethermine.

OK two things the person with the burned mobo due to RX 480 stop cross threading!  This thread is about the Claymore Dual Miner and the RX 480 discussion is for that thread!  Now what I want to know and which is of most importance is this latest released affected by the DOS attack that is affecting mining speeds?  Right now they are telling those to go back to the geth 1.4.7 right now until a new version is released that fixes the DOS vulnerability.   Someone really seems to be trying to kill off Ethereum.

6 Pin PCIE power connectors are rated at 75W, but they can hold much more power, up to 150W, widely used in bitcoin mining.

It doesnt make any sense that 6PIN cant deliver more than 75W.
Suddenly 2 extra cables give 75W more?
Also it seems the 2 extra cables are ground only, check the image:


For me it rather makes sense that some hardware on 480 is routing too much power from PCI-E, while it should just get much more from the 6PIN.

Honestly I have never mined with powered risers... I am using MSI boards with EPS12V (8PIN), maybe that saves my boards
The usual molex ones with basic resistor look so crappy to me that I am afraid to use them
The usb ones look decent, but you say they are not that good?
Any good boards besides Asrock H81/61 Pro Btc that you can recommend? (to handle extra PCI-E power)

If you use the motherboards such as Asrock H81/61 Pro Btc, which has extra onboard molex connectors, you are fine.

I've had mine running for 3 days now maybe I should get powered risers just in case I get 85mhs on average with 2 480's and 1 390 without a problem but if I get the powered risers I should be extra safe.

my bad, Nanos are 8pins, 390s use 8+6pins

But Nano's are reference design 8pin pcie. Are there boards with 6 pin only?

According to the H81 Pro BTC manual, the powered molex are used for SLI/XFIRE and there 2 connectors on the mobo.

If I power up the mobo without the molex connected onto the mobo, upon bootup there will be a BIOS screen flash to remind you to connect the molex.