Usage at CERN - riga/law GitHub Wiki
law
on lxplus (CC7)
Setup Plain setup
Method 1: Load from afs.
source /afs/cern.ch/user/m/mrieger/public/law_sw/setup.sh
which luigi
# /afs/cern.ch/user/m/mrieger/public/law_sw/luigi/bin/luigi
which law
# /afs/cern.ch/user/m/mrieger/public/law_sw/law/bin/law
Method 2: Install via pip
pip install --user six luigi law
# make sure to update your PATH and PYHTONPATH
export PATH="$HOME/.local/bin:$PATH"
export PYTHONPATH="$HOME/.local/lib/python2.7/site-packages:$PYTHONPATH"
which luigi
# $HOME/.local/bin/luigi
which law
# $HOME/.local/bin/law
Setup with CMSSW
The setup with CMSSW is identical to the plain setup without CMSSW shown above.
root://
files
Remote If you plan to use law's remote file targets (which are build ontop of GFAL2 python-bindings) with XRootD support, make sure to update your GFAL plugins via:
source "$(law location)/contrib/cms/scripts/setup_gfal_plugins.sh" <path_to_new_gfal_plugin_dir>
In a CMSSW environment, all gfal plugins appear to work except for the XRootD plugin (libgfal_plugin_xrootd.so
). The command above creates a new directory, symlinks the working gfal plugins from your system into it, downloads a custom compiled XRootD plugin, and exports the directory as GFAL_PLUGIN_DIR
. This was tested with SCRAM_ARCH=slc{6,7}_amd64_gcc{630,700}
and CMSSW 9/10.
Command-line auto completion
bash
source "$( law completion )"
zsh
zsh is able to load and evaluate bash completion scripts via bashcompinit
. In order for bashcompinit
to work, you should run compinstall
to enable completion scripts:
autoload -Uz compinstall && compinstall
After following the instructions, these lines should be present in your ~/.zshrc:
# The following lines were added by compinstall
zstyle :compinstall filename '~/.zshrc'
autoload -Uz compinit
compinit
# End of lines added by compinstall
If this is the case, just source the law completion script (which internally enables bashcompinit) and you're good to go:
source "$( law completion )"