Welcome to Dungeon-Wiki

This wiki will contain information about various aspects of the Dungeon Cluster and tips and tricks for its users.

Quick start

After setting up ssh:

ssh monster3 # (1)
mkdir Projects # (2)
cd Projects
git clone <url> # (3)
cd <repo> # (4)
spack env activate default # (5)
cmake -B build -S . # (6)
cmake --build build
./build/bin/myExecutable # (7)

1. Or any other node you want to work on. (monster1, monster2, monster3, monster4, dungeonkeeper)
2. Create a directory to store your projects. It helps to keep your home directory clean.
3. Clone the repository you want to work on.
4. Change into the repository directory. It has the same name as the repository.
5. Activate the default environment. This will load the following modules:
   • cuda@12.1.1+allow-unsupported-compilers+dev
   • htop+hwloc+unicode
   • neovim@stable
   • ninja
   • gcc@12+piclibs+graphite
   • doxygen+graphviz+ipo generator=ninja
   • cmake@3.26.3~ncurses All compiled with gcc@13.
6. Configure the project with cmake. This will create a build directory and generate the build files.
7. Build the project.

Dos and Don'ts

• Dos

  ---

  • Read this wiki.
  • Ask questions.
  • Use /scratch for IO/filesystem operations.
  • Use this cluster for debugging and development or special use cases not possible on Mogon.
  • Use dungeonkeeper for downloading or heavy IO operations on /share or /home or for installing packages with spack.
  • Delete your stuff when you are done.
  • If your job needs a lot of resources or IO, delay its execution to off-peak hours. You can use

    sleep $((($(date -f - +%s- <<<21:30$' tomorrow\nnow')0)%86400)) && ./my_program
    

    to delay the execution of your program to 21:30. Use a terminal multiplexer in this case.
  • Use independent spack environments.

• Don'ts

  ---

  • Use /home, /cluster, or /share for IO-heavy operations.
  • Use MS-Teams for technical questions.
  • Use Dungeon for use cases also possible on Mogon.
  • Pin spack packages versions, when not necessary.
  • Use SSH keys without a passphrase.
  • Use RSA keys for SSH.