t-rex

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ERROR: Can’t start miner, cuda exception in [check_if_cuda_really_exists, 248], invalid argument

April 20, 2021May 13, 2023
Crypto, Mining, Ubuntu

I just rebooted my miner, had not run any updates, had not run anything, just rebooted my miner, tried turning t-rex back on, and received the following error: ERROR: Can’t start miner, cuda exception in [check_if_cuda_really_exists, 248], invalid argument

To fix this I had to perform the following
Login to the miner
Type:
sudo bash
apt-get update
apt-get upgrade
y
ubuntu-drivers devices
Check to see if the 450 driver is available:

vendor : NVIDIA Corporation
model : GP102 [GeForce GTX 1080 Ti]
driver : nvidia-driver-390 – distro non-free
driver : nvidia-driver-460-server – distro non-free
driver : nvidia-driver-450-server – distro non-free
driver : nvidia-driver-460 – distro non-free recommended
driver : nvidia-driver-418-server – distro non-free
driver : nvidia-driver-450 – distro non-free
driver : xserver-xorg-video-nouveau – distro free builtin

Now run the following command
apt purge nvidia-driver-460-server
y
apt install nvidia-driver-450-server
y
reboot

Once your miner comes back online, you can now run t-rex fine.

The hardware that I used in this guide:
Gigabyte AORUS GeForce GTX 1080 Ti (QTY 6):
https://amzn.to/2JqvXC8

Motherboard (QTY 1):
https://amzn.to/2JqGJZ7

CPU (QTY 1):
https://amzn.to/3qevp2X

Memory (QTY 1):
https://amzn.to/2JqHn8Z

Hard Drive (QTY 1):
https://amzn.to/3lic3X5

Risers (QTY 6):
https://amzn.to/33rIgVE

Power Supplies (QTY 2):
https://amzn.to/3fTRpLR

Add2PSU (QTY 1):
https://amzn.to/39s4URY

Power Switch (QTY 1):
https://amzn.to/3ljmNVk

INCREASE ETH / ETC MINING BY 50% IN 2021 USING OHGODANETHLARGEMENTPILL-R2

December 22, 2020May 13, 2023
Crypto, Mining, Ubuntu

If you are still using an NVidia 1080 Ti card, and are trying to compete with the 2080s and 3090s these days, you need to up your hash game. There has been a tool around for the past 2 years to help with this. It is specifically designed for teh 1080 Ti cards, and has increased my hashes in the area of 50% per card. I wanted to preserve the software on github, so I created my own fork of it. The fork will not be updated, or worked on by me. It is just there so we all have a place to draw from in the long run.

For my setup, I am running Ubuntu 20.04.01, headless, and an Nvidia 1080ti. My miner is T-Rex with the setup from this guide:
https://tacticalware.com/ubuntu-20-04-etc-mining-after-epoch-390-november-2020/

Back to the guide

On your miner, open a terminal
sudo bash
cd /tacticalware
git clone https://github.com/tacticalware/ETHlargementPill.git
mv ETHlargementPill/ ohgod
cd ohgod
chmod +x OhGodAnETHlargementPill-r2
screen ./OhGodAnETHlargementPill-r2

You will see the following message:

Your system is now capable of running at 50% greater speed.

Since you used screen you can close this connection and it will still run.
To reconnect to this screen you can resume it by opening a terminal again
Typing sudo bash
Then screen -r

All that is left is to start up your mining software, configure it to mine ETH or ETC and start mining.

Enjoy the extra hashes!

The hardware that I used in this guide:
Gigabyte AORUS GeForce GTX 1080 Ti (QTY 6):
https://amzn.to/2JqvXC8

Motherboard (QTY 1):
https://amzn.to/2JqGJZ7

CPU (QTY 1):
https://amzn.to/3qevp2X

Memory (QTY 1):
https://amzn.to/2JqHn8Z

Hard Drive (QTY 1):
https://amzn.to/3lic3X5

Risers (QTY 6):
https://amzn.to/33rIgVE

Power Supplies (QTY 2):
https://amzn.to/3fTRpLR

Add2PSU (QTY 1):
https://amzn.to/39s4URY

Power Switch (QTY 1):
https://amzn.to/3ljmNVk

UBUNTU 20.04, ETC MINING, AFTER EPOCH 390 [NOVEMBER 2020]

November 27, 2020May 13, 2023
Crypto, Mining

This is a quick guide on how to use T-Rex on your Ubuntu 20.04 mining rig to allow your NVidia 1080 Ti cards to run after the epoch. Ethereum Classic has a hardform at Epoch 390 which should fall on or around November 28th 2020. To keep mining afterwards you will have to update your miner to one that supports the new fork. For this, I have chosen to switch over to T-Rex.

On the rig
Open a Terminal
sudo bash
Enter your password
mkdir /tacticalware
cd /tacticalware

If you have Cuda 10 installed, download the following, otherwise find the one for your Cuda version
wget https://github.com/trexminer/T-Rex/releases/download/0.18.11/t-rex-0.18.11-linux-cuda10.0.tar.gz
Once it is downloaded
tar -zxvf t-rex-0.18.11-linux-cuda10.0.tar.gz
cp ETC-2miners.sh tacticalware.sh
nano tacticalware.sh

Now modify the contents of the file. I suggest replacing the mining site, and wallet address. My file looks like this:
./t-rex -a ethash –coin etc -o stratum+tcp://us1-etc.ethermine.org:4444 -u 0xb2bc70cD85e20c96c8967CAECcE20a238ee9950D -w tacticalware –fork-at etchash=epoch:390

Note that there is a double dash before –coin and –fork. Sometimes your browser will show them as a double dash, sometimes it shows as a single long dash. they are double dashes

Save the file
Exit
Now you can launch it by running
./tacticalware.sh

It will begin to mine. To monitor it you can do it through a web browser. Simply look for the address when the miner begins

The address will look something like this, and be displayed right when you begin mining
ubuntu t-rex

When you browse to that site you will see something that looks like this:

t-rex

That’t It. You are mining successfully. Thanks for reading

The hardware that I used in this guide:
Gigabyte AORUS GeForce GTX 1080 Ti (QTY 6):
https://amzn.to/2JqvXC8

Motherboard (QTY 1):
https://amzn.to/2JqGJZ7

CPU (QTY 1):
https://amzn.to/3qevp2X

Memory (QTY 1):
https://amzn.to/2JqHn8Z

Hard Drive (QTY 1):
https://amzn.to/3lic3X5

Risers (QTY 6):
https://amzn.to/33rIgVE

Power Supplies (QTY 2):
https://amzn.to/3fTRpLR

Add2PSU (QTY 1):
https://amzn.to/39s4URY

Power Switch (QTY 1):
https://amzn.to/3ljmNVk

WINDOWS 10 MINING ETC AFTER EPOCH 390 [NOVEMBER 2020]

November 27, 2020May 13, 2023
Crypto, Mining, Windows 10

This is a quick guide on how to use T-Rex on your Windows 10 computer to allow your NVidia 1080 Ti cards to run after the epoch. Ethereum Classic has a hardform at Epoch 390 which should fall on or around November 28th 2020. To keep mining afterwards you will have to update your miner to one that supports the new fork. For this, I have chosen to switch over to T-Rex.

On my Windows computer:
Open a web browser
Navigate to
https://github.com/trexminer/T-Rex/releases

Download
https://github.com/trexminer/T-Rex/releases/download/0.18.11/t-rex-0.18.11-win-cuda10.0.zip

Unzip t-rex-0.18.11….

Your Antivirus will probably send you a warning, so you will have to create an exception for it.

Now right click on the .bat file you want to run. For me, I will be mining ETC, so I will right click on ETC-2miners.bat

Once the file is open, I will save it as Tacticalware.bat

Next you will want to change the mining pool to whichever one you use. I use ethermine

You will want to modify the wallet address that shows in the file, and replace it with your wallet address

At the end of the changes, my file looks like this:
t-rex.exe -a ethash –coin etc -o stratum+tcp://us1-etc.ethermine.org:4444 -u 0xb2bc70cD85e20c96c8967CAECcE20a238ee9950D -w tacticalware –fork-at etchash=epoch:390

pause

Save the file, and then run it. You can monitor the progress by navigating watching your hashes on the ethermine site, or navigate to the local t-rex site that is created on your computer.