Open Source ZEC (ZCash) GPU Miner AMD & NVidia (up to 45 sol/s on RX480)

[Ed173]

Hi all

My first post... i am a newbie. New to mining, new to linux, new to pretty much everything  
So i spent the last days reading everything there is about zcash mining and did some testing and trying.
Now i got the 0.2.3 client up and running in Ubuntu 16.04 with a steady 38 sols/s for a single FX480 8GB
(planning to add more GPU later)

Pool mining is working fine for me and very stable. Auto-payout is working flawless, already received 3 payments.
This pool is awesome!
I'd like to take this opportunity to thank eXtremal for all the hard work!!!

one question (could not find this anywhere):
When you transfer funds from t-addr to z-addr, there is a 0.0001 transaction fee that goes to the zcash folks.
Does this fee also apply to pay out from the pool to my t-addr?
(cause if that is the case, it would be ridiculous to set payout to 0.001 and loose 10% every time)

Cheers and happy mining to all!

[espressodelisi]

how to run zcashgpuclient with log output?
i try run 
nohup ./zcashgpuclient &
but nohup.out was empty ((

I am using screen on ubuntu. Screen is easier to manage for me.

[liomojo1]

Why https://github.com/zcminer-dev/zcminer/ with Linux Z-cash miner doesn't work? Any suggestions?

zcminer
A CUDA Equihash / ZCash miner miner with developer fee

Features
Currently running at ~50 Sols/s on a slightly overclocked GTX 1070
Supporting Pascal, Maxwell & Kepler GPUs
This miner is still in a very early state and will probably not run stable. Using a script to periodically restart the miner might be a good idea...

repository is disabled

I have copy this

Anndd did you try it is it working that well , if it is will you or the author share it?

[hackmyl1fe]

Does anyone know how to deal with GPUs crashing?

Im using screen right now on ubuntu to run the miner, but everynow an then one of the GPUs will crash.
I tried redirecting the output to a file, and parsing it to check if a GPU crashed but the file is empty?
Another option would be to restart the miner every x seconds, but im not sure its the best option.

Also did anyone manage to get 2 instances running on Nvidia cards?

[isamamin]

Does anyone know how to deal with GPUs crashing?

Im using screen right now on ubuntu to run the miner, but everynow an then one of the GPUs will crash.
I tried redirecting the output to a file, and parsing it to check if a GPU crashed but the file is empty?
Another option would be to restart the miner every x seconds, but im not sure its the best option.

Also did anyone manage to get 2 instances running on Nvidia cards?

try older version and report here what will happen, almost crashing related to gpu  - power - driver etc..
copy the result  here....

[Dmitry.Vastov]

can i mine on my amd processor?

[vlsmk16]

how to run zcashgpuclient with log output?
i try run 
nohup ./zcashgpuclient &
but nohup.out was empty ((

I am using screen on ubuntu. Screen is easier to manage for me.

do you have log file in this case when use screen?
i need log file to monitoring and restarting if crashing

[mikegi]

Hi,

Currently mining with two NVIDIA GPUs... a 970 and a 750Ti. ( ./zcashgpuclient_silentarmy )

I guess that the miner starts 2 threads per GPU for collecting the results.

The 970 works fine (GPU0,1)  but the 750Ti  (GPU2,3) it seems can't handle 2 threads....

[GPU 0] T=-1C A=-1% sols=10.723
[GPU 1] T=-1C A=-1% sols=10.151
[GPU 2] crashed!
[GPU 3] T=-1C A=-1% sols=8.748


When starting the miner, the behaviour of the 750Ti is intermittent.  If it doesn't mine, usually, stopping and starting the miner will fix the problem, and it will mine as GPU2 or GPU3

Here the 750Ti doesn't mine at all.

Code:

<info> OpenCL: alloc 8 bytes
<info> OpenCL: alloc 872415232 bytes
<info> OpenCL: alloc 872415232 bytes
<info> OpenCL: alloc 4098008 bytes
Hash tables will use 1744.8 MB
threads: 8192, work size: 256
ZCash GPU miner thread 1 started
<info> OpenCL: alloc 8 bytes
<info> OpenCL: alloc 872415232 bytes
<info> OpenCL: alloc 872415232 bytes
<info> OpenCL: alloc 4098008 bytes
Hash tables will use 1744.8 MB
threads: 512, work size: 256
ZCash GPU miner thread 2 started
<info> OpenCL: alloc 8 bytes
<info> OpenCL: alloc 872415232 bytes
<info> OpenCL: alloc 872415232 bytes
<info> OpenCL: alloc 4098008 bytes
Hash tables will use 1744.8 MB
threads: 512, work size: 256
Connecting to frontend: coinsforall.io:6668 ...
ZCash GPU miner thread 3 started
Connecting to bitcoin: coinsforall.io:60200 ...
Connecting to signals: coinsforall.io:60201 ...
Work received: height=3881 diff=15066596 latency=447ms
OpenCL error: -4 at
/home/zecminer/git/xpmclient/zcash/zcashgpuclient_silent.cpp:250
OpenCL error: -4 at
/home/zecminer/git/xpmclient/zcash/zcashgpuclient_silent.cpp:250
OpenCL error: -4 at
/home/zecminer/git/xpmclient/zcash/zcashgpuclient_silent.cpp:559
OpenCL error: -4 at
/home/zecminer/git/xpmclient/zcash/zcashgpuclient_silent.cpp:559

Here, it mines well (with one thread, ~8 sol/s is acceptable I think)

Code:

 threads: 8192, work size: 256
ZCash GPU miner thread 1 started
<info> OpenCL: alloc 8 bytes
<info> OpenCL: alloc 872415232 bytes
<info> OpenCL: alloc 872415232 bytes
<info> OpenCL: alloc 4098008 bytes
Hash tables will use 1744.8 MB
threads: 512, work size: 256
ZCash GPU miner thread 2 started
<info> OpenCL: alloc 8 bytes
<info> OpenCL: alloc 872415232 bytes
<info> OpenCL: alloc 872415232 bytes
<info> OpenCL: alloc 4098008 bytes
Hash tables will use 1744.8 MB
threads: 512, work size: 256
Connecting to frontend: coinsforall.io:6668 ...
ZCash GPU miner thread 3 started
Connecting to bitcoin: coinsforall.io:60200 ...
Connecting to signals: coinsforall.io:60201 ...
Work received: height=3881 diff=15066596 latency=688ms
OpenCL error: -4 at
/home/zecminer/git/xpmclient/zcash/zcashgpuclient_silent.cpp:250
OpenCL error: -4 at
/home/zecminer/git/xpmclient/zcash/zcashgpuclient_silent.cpp:559

I fiddled with the threads and work size and it seems that "threads: 512, work size: 256" for the 750Ti works well.

Any ideas for better settings or if it would be possibly to set the number of threads used for a GPU?

I'm mining here now because this was the first pool software I could get working well with Linux.  
The pool seems to be working well enough (probably no more hiccups than other pools) and  
paying out, so for the time being, I will continue mining here. The "Minimal Payout" adjustment works for me.  

It would be nice to see more statistics about the pool and a description of the payout scheme. Transparency
would increase the amount of trust from the miners. 4% pool fee is maybe a but higher than usual, but being
able to compare performance with other pools would be nice and could justify the fee.

What would be nice to see in terms of stats would be:
- count of shares per miner
- shares per block or round

I'd also like to say that so far, I am satisfied with the results from this pool. Initially I was a bit wary about
using pool since the software is unique to this (ZEC) pool.

[eXtremal]

You can try http://coinsforall.io/distr/zcashclient-0.2.4.zip - connection lost handling rewrited in this version.

[Hydromine]

Looks like Version 0.2.4 crashes after startup with

   Assertion failed: rc == 0 || zmq_errno () == ETERM, file zsockopt.c, line 976

on machines having the previous host/port error now...

[isamamin]

You can try http://coinsforall.io/distr/zcashclient-0.2.4.zip - connection lost handling rewrited in this version.

is it new ?
------
by the way eXtremal, i'm still mining just i changed my exchange  wallet - keep your good working!
t1aGAsUM8q6fv37hg8rnezxoMxGwCr6aDNv

[wtfonly16]

im glad ur all still mining on this crap scam pool, using a pool restricted miner that mines at half the hashrate vs real ones

hahahhaha

[isamamin]

i'm not see any scam yet, all hash seem normal - for me!

[huynhthanhwuang]

Please fix error for "zcashgpuclient_silentarmy.exe" when run it on window 10 64bit.

[espressodelisi]

how to run zcashgpuclient with log output?
i try run 
nohup ./zcashgpuclient &
but nohup.out was empty ((

I am using screen on ubuntu. Screen is easier to manage for me.

do you have log file in this case when use screen?
i need log file to monitoring and restarting if crashing

I open a new screen with name miner with this command:

screen -S miner

Start the miner and detach the screen leaving it running in the background by pressing ctrl a and d.

When i want to see the miner i reattach the screen with this command:

screen -r miner

And see the lates output. I did not needed to see a log because all the errors are in the last lines of output.

[BitLeafClover]

I'm failing super hard here. Can anyone please provide me with the directory to my Z Address wallet.dat file in Linux? Much thanks!

Also remember when in your home file folder, to hit ( CTL + H ) to see the .zcash folder as it is hidden. I'm not in my Ubuntu right now, so not sure where its hiding....  your wallet.dat

Aha! The Crtl + H helped me find a wallet.dat in Home/.zcash/testnet3. Thank you! Not sure tho - is this the testnet wallet or my main net Z + T wallet? There's only one wallet.dat file, but I have 1 Z addy and 1 T addy. I feel like there'd normally be 2 wallet.dats, no?

[eestimees]

I found the solution , just remove put instancese for silent army from 2 to 1 and it starts working!!!!!!!!!!!!!

unbelivable! Thank you! that helped! Got 0.2.3 working now

#
Which error you got before? The can't connect?

yes, can't connect error.. but now feels like 0.2.0 is faster on 380 cards

[110110101]

You can try http://coinsforall.io/distr/zcashclient-0.2.4.zip - connection lost handling rewrited in this version.

Thanks eXtremal, seems to be working just fine on my Win7 box. Appreciate your efforts!

[morfeuz]

This is my first post.

First of all, big thanks to eXTremal.

I don't know the zcash protocol very well, i'm more used to mining ether coins, but, is anyone else finding it a bit odd that coinsforall.io pool has not found a block in the last 4+ hours? We were averaging a bit more than 1 block per hour before.

I realize that finding blocks is also a matter of luck etc etc. But with our hashing power IMO it should normalize block discovery time a bit.

Did any major new pool enter the scene? To the more experienced miners, what is your opinion?

[Okawari]

Im having issues running the software! Im on my laptop (Alienware MX11 R2) and it has two GPU's, an Intel one and Nvidia GeForce GT 335M. When I click to run the software it opens the command line and it closes quickly. Can anyone help me on this?
Thanks