========= desiconda

Introduction

This package contains scripts for installing conda and all compiled dependencies needed by the spectroscopic pipeline.

Quick start installation

To install desiconda, start with a terminal where you have not configured a different desiconda / desi_environment, then::

# set target
prefix=/global/common/software/desi/users/${USER}/desiconda
mkdir -p ${prefix}

local_copy=/global/cfs/cdirs/desi/users/${USER}/desiconda
git clone https://github.com/desihub/desiconda ${local_copy}
cd ${local_copy}

unset PYTHONPATH
export DCONDAVERSION=$(date '+%Y%m%d')-2.0.1.dev
PREFIX=${prefix} ./install.sh |& tee install.log

To load this version of desiconda::

module use ${prefix}/${DCONDAVERSION}/modulefiles
module load desiconda

Then install a suite of desispec, desiutil, etc. modules::

source scripts/bootstrap-desi.sh

After that you can module load desiutil etc.

Example

Imagine you wanted to install a set of dependencies for DESI software on a cluster (rather than manually getting all the dependencies in place). You plan on installing desiconda in your home directory (${HOME}/software/desi) and you want to have the custom string "my-desiconda" associated with your installation.

You git-cloned desiconda using::

git clone https://github.com/desihub/desiconda /path-to-git-clone/desiconda

You also put all the commands for dependencies you want to install and customizations in the "conf/mypkgs-pkgs.sh" and "conf/myenv-env.sh" files you created (based on the existing conf/default-pkgs.sh and conf/nersc-env.sh), respectively.

This install.sh script, in the top-level directory, will create the environment and install the dependencies and module files. When you run this script, it will download many MB of binary and source packages, extract files, and compile things. It will do this in your current working directory. Also the output will be very long, so pipe it to a log file::

$> DCONDAVERSION=my-desiconda PREFIX=$HOME/software/desi CONF=myenv PKGS=mypkgs /path-to-git-clone/desiconda2/install.sh 2>&1 | tee log

If everything worked, then you can see your new desiconda install with::

$> module use $HOME/software/desi/desiconda/$dcondaversion/modulefiles
$> module avail desiconda

And you can load it with::

$> module load desiconda/$dcondaversion

Configuration

If environment and package files (conf/[envtag]-env.sh and conf/[pkgtag]-pkgs.sh) for your use case already exists in the "conf" directory, then just use them. Otherwise, create or edit files in the "conf" subdirectory that are named after the environment and set of packages you wish to create and install. See existing files conf/default-env.sh and conf/default-pkgs.shfor spectroscopic pipeline dependencies on cori.

For ${NERSC_HOST} == "datatran" installs use::

PREFIX=${prefix} PKGS=datatran install.sh

as in the example above.

Contents of installation

The installation directory (assuming the installation script was called with ${DCONDAVERSION} and ${PREFIX}) will contain directories and files::

${PREFIX}/desiconda/${DCONDAVERSION}/conda
${PREFIX}/desiconda/${DCONDAVERSION}/aux
${PREFIX}/desiconda/${DCONDAVERSION}/modulefiles/desiconda/$DCONDAVERSION
${PREFIX}/desiconda/${DCONDAVERSION}/modulefiles/desiconda/.version_$DCONDAVERSION

desihub / desiconda