twobombs

Dealing with the Linux OOM Killer at the program level

Do this in cases when you dont want to change the os-level settings, but only want to disable the OOM killer for a single process. This is useful when youre on a shared machine/server.

The OOM killer uses the process level metric called oom_score_adj to decide if/when to kill a process. This file is present in /proc/$pid/oom_score_adj. The oom_score_adj can vary from -1000 to 1000, by default it is 0.

You can add a large negative score to this file to reduce the probability of your process getting picked and terminated by OOM killer. When you set it to -1000, it can use 100% memory and still avoid getting terminated by OOM killer.

twobombs

!dream "a dendritic monster emerging from the ocean, sea waves, vray, 55mm" -n 5


!dream "a wormy dendritic monster emerging from the ocean, sea waves, vray, 55mm" -n 5



!dream "furry friendly monster, photorealistic, colored, unreal engine, vray, 55mm" -n 9

twobombs

# First of all a big thank you for Dan Strano and all the maintainers of the Qrack repository at the Unitary Fund
# Without their constant effort, focus and guidance all of ThereminQ and its endeavours would simply not exist.
# Please pay their sites a visit https://github.com/unitaryfund/qrack https://unitary.fund/ and join us on discord

# after the install of Qrack ( https://gist.github.com/twobombs/c93f9bbf2afe98d795372d024d6b30d7 )
# and reading the best practices Guide ( https://gist.github.com/twobombs/eee53194f7c3e00332b555bad0ae2ade )
# it is time to run the scripts that are avaliable for it on ThereminQ

# fetch the thereminq repo to get the scripts
git clone https://github.com/twobombs/thereminq.git

twobombs

# First of all a big thank your for Dan Strano and all the maintainers of the Qrack repository at the Unitary Fund
# Without their constant effort, focus and guidance all of ThereminQ and its endeavours would simply not exist.
# Please pay their sites a visit https://github.com/unitaryfund/qrack https://unitary.fund/ and join them on discord

After the installation of the Qrack system this Gist is about the recommended practices of running Qrack 
This part has no required runnable code, but I would like to help you here how to help Qrack tell the system you have running

Qrack is instructed by export variables and command line variables. The right mix will help Qrack perform best.

An example of a script is here ( taken from https://github.com/twobombs/thereminq/blob/master/runscripts/run-tcc-dense-cube-multi )

twobombs

# First of all a big thank your for Dan Strano and all the maintainers of the Qrack repository at the Unitary Fund
# Without their constant effort, focus and guidance all of ThereminQ and its endeavours would simply not exist.
# Please pay their sites a visit https://github.com/unitaryfund/qrack https://unitary.fund/ and join them on discord

# Download Ubuntu 22.04 server https://ubuntu.com/download/server
# Put iso file on prepared USB stick https://www.ventoy.net/en/download.html
# Boot and install Ubuntu 22.04 server on target machine ( RAID setup optional )

# Required software install
apt-get -y install -y wget curl cmake build-essential git software-properties-common ocl-icd-opencl-dev pkg-config libglvnd-dev clinfo oclgrind python-setuptools python3-setuptools dkms build-essential cmake openssh-server vim-common time opencl-headers libfreetype6-dev autotools-dev libicu-dev libbz2-dev libboost-all-dev

twobombs

Minimum requirements:
- ES/Kibana + vQbit node in k3s: 4 cores and 4 GB RAM, 40 GB storage 
- ES/Kibana + vQbit node + Rancher 2 on Docker: 4 cores, 8GB RAM, 60 GB Storage

Advice:
- Install Rancher 2 on a separate controller node with at least 2 cores, 2 GB RAM and 20Gb Storage
- Deploy nodes with K3s/K3d (CPU) and/or Docker (GPU instances)
- Separate ES/Kibana stack from vQbit workloads 
- Set resource limits on the same node when sharing workloads or use separate nodes

twobombs

docker run -d --net host --pid host --userns host --cap-add audit_control \
    -e DOCKER_CONTENT_TRUST=$DOCKER_CONTENT_TRUST \
    -v /etc:/etc \
    -v /usr/bin/docker-containerd:/usr/bin/docker-containerd \
    -v /usr/bin/docker-runc:/usr/bin/docker-runc \
    -v /usr/lib/systemd:/usr/lib/systemd \
    -v /var/lib:/var/lib \
    -v /var/run/docker.sock:/var/run/docker.sock \
    --label docker_bench_security \
    docker/docker-bench-security

twobombs

#
# Name: nginx-tls.conf
# Auth: Gavin Lloyd <gavinhungry@gmail.com>
# Desc: Nginx SSL/TLS configuration for "A+" Qualys SSL Labs rating
#
# Enables SPDY, PFS, HSTS and OCSP stapling. Configuration options not related
# to SSL/TLS are omitted here.
#
# Example: https://www.ssllabs.com/ssltest/analyze.html?d=gavinhungry.io
#