Claymore’s Dual Ethereum AMD+NVIDIA GPU Miner v12.0 (Windows)

[James Bond]

**Claymore's Dual Ethereum + Decred/Siacoin/Lbry/Pascal/Blake2s/Keccak AMD+NVIDIA GPU Miner.**
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**Latest version is v12.0:**

- zero devfee for all 2GB and 3GB cards in all operating systems.
- reduced devfee for dual mode, now it is 1%, same as for ETH-only mode.
- a bit reduced required GPU memory (both AMD and NVIDIA) so you can mine ETH a bit longer on cards that don't have enough memory.
- added version for CUDA 10.0, it is a bit faster for latest 20xx NVIDIA cards.
- a few minor bug fixes and improvements.

**LINKS:**

MEGA: https://mega.nz/#!7LImmQJJ!Djbk_B66VwoZJbLvQzs501-1rH3H7vcPlSPm3XdXEc0


**TESTED NVIDIA DRIVERS (other versions are untested, they can be worse or better):**
9xx cards in Windows 7 x64: just use latest/recent drivers from Nvidia website (for example, 368.81). Note that latest 372.54 is slower than 368.81.
9xx cards in Windows 10 x64: you have to use old drivers (for example, 352.xx) and miner built for cuda6.5.
10xx cards in Windows 7 x64: just use latest 372.54 drivers from Nvidia website.
10xx cards in Windows 10 x64: just use latest 372.54 drivers from Nvidia website, note that you must have Win10 Anniversary update.


**FEATURES:**

- Supports new "dual mining" mode: mining both Ethereum and Decred/Siacoin/Lbry/Pascal at the same time, with no impact on Ethereum mining speed. Ethereum-only mining mode is supported as well.
- Effective Ethereum mining speed is higher by 3-5% because of a completely different miner code - much less invalid and outdated shares, higher GPU load, optimized OpenCL code, optimized assembler kernels.
- Supports both AMD and nVidia cards, even mixed.
- No DAG files.
- Supports all Stratum versions for Ethereum: can be used directly without any proxies with all pools that support eth-proxy, qtminer or miner-proxy.
- Supports Ethereum and Siacoin solo mining.
- Supports both HTTP and Stratum for Decred.
- Supports both HTTP and Stratum for Siacoin.
- Supports Stratum for Lbry, Pascal, Blake2s, Keccak.
- Supports failover.
- Displays detailed mining information and hashrate for every card.
- Supports remote monitoring and management.
- Supports GPU selection, built-in GPU overclocking features and temperature management.
- Supports Ethereum forks (Expanse, etc).
- Windows and Linux versions.


**This version is POOL/SOLO for Ethereum, POOL for Decred, POOL/SOLO for Siacoin, POOL for Lbry, POOL for Pascal, POOL for Blake2s, POOL for Keccak.**

For old AMD cards, Catalyst (Crimson) 15.12 is required for best performance and compatibility.
For AMD 4xx/5xx cards (Polaris) you can use any recent drivers.
For AMD cards, set the following environment variables, especially if you have 2...4GB cards:

GPU_FORCE_64BIT_PTR 0
GPU_MAX_HEAP_SIZE 100
GPU_USE_SYNC_OBJECTS 1
GPU_MAX_ALLOC_PERCENT 100
GPU_SINGLE_ALLOC_PERCENT 100

For multi-GPU systems, set Virtual Memory size in Windows at least 16 GB (better more):
"Computer Properties / Advanced System Settings / Performance / Advanced / Virtual Memory".

This miner is free-to-use, however, current developer fee is 1%, every hour the miner mines for 36 seconds for developer.
For all 2GB cards and 3GB cards devfee is 0%, so on these cards you can mine all ETH forks without devfee, this miner is completely free in this case.
If some cards are 2...3GB and some >3GB, 2...3GB cards still mine for you during devfee time, only cards that have more than 3GB memory will be used for devfee mining. Miner displays appropriate messages during startup.
Second coin (Decred/Siacoin/Lbry/Pascal/Blake2s/Keccak) is mined without developer fee.
So the developer fee is 0...1%, if you don't agree with the dev fee - don't use this miner, or use "-nofee" option.
Attempts to cheat and remove dev fee will cause a bit slower mining speed (same as "-nofee 1") though miner will show same hashrate.
Miner cannot just stop if cheat is detected because creators of cheats would know that the cheat does not work and they would find new tricks. If miner does not show any errors or slowdowns, they are happy.

This version is for recent AMD videocards only: 7xxx, 2xx and 3xx, 2GB or more. Recent nVidia videocards are supported as well.

There are builds for Windows x64 and for Linux x64 (tested on Ubuntu 14.04). No 32-bit support.

**CONFIGURATION FILE**

You can use "config.txt" file instead of specifying options in command line.
If there are not any command line options, miner will check "config.txt" file for options.
If there is only one option in the command line, it must be configuration file name.
If there are two or more options in the command line, miner will take all options from the command line, not from configuration file.
Place one option per line, if first character of a line is ";" or "#", this line will be ignored.
You can also use environment variables in "epools.txt" and "config.txt" files. For example, define "WORKER" environment variable and use it as "%WORKER%" in config.txt or in epools.txt.


**REMOTE MONITORING/MANAGEMENT**

Miner supports remote monitoring/management via JSON protocol over raw TCP/IP sockets. You can also get recent console text lines via HTTP.
Start "EthMan.exe" from "Remote management" subfolder (Windows version only).
Check built-in help for more information. "API.txt" file contains more details about protocol.


**TROUBLESHOOTING**

1. Install Catalyst v15.12 for old AMD cards; for Fury, Polaris and Vega cards use latest blockchain drivers.
2. Disable overclocking.
3. Set environment variables as described above.
4. Set Virtual Memory 16 GB or more.
5. Reboot computer.
6. Check hardware, risers.
7. Set some timeout in .bat file before starting miner at system startup (30sec or even a minute), and try "-ethi 4" to check if it is more stable. It can help if miner is not stable on some system.


**FAQ**

- Miner works too slowly when I mine ETH/ETC but works fine when I mine some ETH fork.
Check if you enabled "Compute Mode" in AMD drivers, also you can press "y" key to turn on "Compute Mode" in AMD drivers for all cards (Windows only).

- I cannot mine ETH/ETC with Nvidia 3GB card in Windows 10.
Windows 10 internally allocates about 20% of GPU memory so applications can use only 80% of GPU memory. Use Windows 7 or Linux.

- I see 0% devfee for all 2GB and 3GB cards, my rig has some 3GB cards and some 6GB cards, how is the fee calculated in this case?
During devfee mining 3GB cards still mine for you. How does it work? Miner creates second connection for devfee mining, main connection still works and 3GB cards still find shares for it.
You can see these shares in the log file, all devfee shares contain "Devfee:" string, normal shares don't contain this string and 3GB cards can find them during devfee mining as well.
Note that devfee mining takes only 36 seconds per hour so it can take many hours to find normal shares during devfee mining.


- What command option X means?
Read "Readme!!!.txt", "COMMAND LINE OPTIONS" section.


- Windows 10 marks miner as a virus.
Read "Readme!!!.txt", "KNOWN ISSUES" section.

- Can miner stop overheated GPU?
Yes, see "-tstop" option.


- How to mine Decred or Sia ONLY with this Ethereum Dual miner?
No way. It is Ethereum miner with extra bonus coins. To mine extra coins only use other miners.

- Why Ethereum hashrate in Dual mode is higher than in Single mode?
Hardware feature, accept it as an extra bonus.

- Is 15.12 driver mandatory?
Usually latest drivers work well. But there are some reports of people where they don't. So 15.12 is recommended.

- Will newer drivers have higher/lower hashrate?
Usually no, but it depends... Check for yourself.

- Why miner on Linux with stock card settings gives a bit lower hashrate than on Windows?
This probably is the difference in time calculations on both platforms. In reality the accepted hashrate is usually the same.

- Why -cclock/-mclock options do not work?
Sometimes they do not work. Use Afterburner or Trixx on Windows, atitweak and other tools on Linux instead.

- Why my GPU is 10C hotter in Dual mode?
This is a price for the extra work done. It also consumes more power, so make sure your PSU has sufficient power.

- Can the temperature be lowered?
Yes, see "-tt", "-dcri", "-ttdcr", "-li", "-ttli" options.

- How can I undervolt my cards on Linux?
Usually only by flashing modified GPU BIOS. Unfortunately, no standard way of doing so.

- I see only one card via Remote Desktop Connection.
It's a problem of RDC, use TeamViewer or some other remote access software. Or try to use latest version of the miner.

- I see only one card instead of two in temperature management info.
Disable CrossFire, don't use Remote Desktop Connection. Or try to use latest version of the miner.

- Miner works in ETH-only mode but crashes in dual mode.
Dual mode requires more power, so make sure PSU power is enough and check GPU clocks if you OC'ed them.

- Error "server: bind failed with error".
Specify "-mport 0" option.

- How can I get stats from miner as EthMan does?
Check API.txt file for json protocol details.

- I cannot mine Ethereum with 2GB card.
Yes, you cannot mine Ethereum or Ethereum Classic with 2GB cards anymore. But you can mine other Ethereum forks.

- I mine ETH fork on my 2GB cards. For devfee miner tries to mine ETH and it fails because ETH cannot be mined on 2GB cards.
- Use "-allcoins exp -allpools 1" options.

- Sometimes miner cannot connect to devfee mining server at first attempt, does it cause longer devfee mining?
No, during these connection attempts miner still mines for you.


- How many cards are supported?
Miner supports up to 32 GPUs.