Muse

Introduction

As Mu2e approaches data-taking there will be many more ntuples, calibration procedures, and analysis code developed. Including this user code in the main Offline repo will be unwieldy and hard to maintain. The main Offline repo should remain minimal, including only what is needed for simulation and reconstruction jobs, for simple maintenance and faster builds. Code for calibration, ntuple, and analysis code, maintained and used by individuals and small groups should be stored in a smaller repos controlled by the appropriate group. These smaller repos could be standalone contain modules and utilities that depend on code and functionality in other small repos, or in Offline. To make this work, we need a system to build the smaller repos against an existing Offline build, or together with the Offline, sharing include files, fcl, and cross-linking. The system should support common use cases and be flexible. The Muse system is a set of scripts developed inside Mu2e that provides this functionality. It is a UPS product containing a set of scripts and support for scons code build at the core.

In this page we will use Ana1 and Ana2 as examples of smaller, non-Offline code repos. WorkDir will represent the path to a user project area on /mu2e/app, or possible other disk where you can build code. AnaDir will represent an area where analysis files are kept : scripts, root scripts, ntuples, histograms, and notes. If the user's work is mostly concerned with code development and commits, then it may be conveneient to use WorkDir as AnaDir, or, if the works is mostly using a statis build, then they may be different. Or there may be several versions of AnaDir, or AnaDir's with different goals, all using the same WorkDir.

Quick Start

Always required:

 setup mu2e
 setup muse

When building on mu2egpvm01-06, use "-j 4", when building on mu2ebuild01, use "-j 20", see Machines. See GitHubWorkflow for more details on using git. See #mgit for more information on using partial checkout (building only parts of Offline).

Build Offline

Not expecting to commit files back to the Offline repo:

 cd WorkDir
 git clone https://github.com/Mu2e/Offline
    or
 
 muse setup
 muse build -j 20

Build Offline developer

Expecting to commit files back to the Offline repo:

 cd WorkDir
 git clone https://github.com/Mu2e/Offline

git clone git@github.com:<your GitHub username>/Offline

 muse setup

 muse build -j 20

Returning later

To re-setup, later, in another process

 cd WorkDir
 muse setup

or

 cd AnaDir
 muse setup WorkDir

Setup options

git clone https://github.com/<their GitHub user name>/Offline
cd Offline

The following is a recipe for testing building Offline with the Tutorial repo, as an example.

 setup mu2e
 setup muse
  < cd to a working dir >
 git clone https://github.com/Mu2e/Offline
 git clone https://github.com/Mu2e/Tutorial
 muse -h
 muse setup
 muse build -j 20 >& b_00.log
 mu2e -n 10 -c Offline/Validation/fcl/ceSimReco.fcl
 mu2e -s mcs.owner.val-ceSimReco.dsconf.seq.art \
    -c Tutorial/DataExploration/fcl/Ex01.fcl

  < in the same working dir, but in a second window>
 muse setup -q debug
 muse status
 muse build -j 20 >& d_00.log
 mu2e -s mcs.owner.val-ceSimReco.dsconf.seq.art \
    -c Tutorial/DataExploration/fcl/Ex02.fcl

An example of a backing release

 setup mu2e
 setup muse
  < cd to a working dir that will be the backing build >
 git clone https://github.com/Mu2e/Offline
 muse setup
 muse build -j 20 >& b_00.log

  < *in a new process* cd to a working dir that will link to the backing build >

 setup mu2e
 setup muse
 git clone https://github.com/Mu2e/Tutorial
 muse link /path/backing_working_dir/Offline
 muse setup
 muse build -j 20 >& b_00.log
 mu2e -n 10 -c Offline/Validation/fcl/ceSimReco.fcl
 mu2e -s mcs.owner.val-ceSimReco.dsconf.seq.art \
    -c Tutorial/DataExploration/fcl/Ex02.fcl

Example of a partial Offline build using "mgit" the muse version of pgit

setup mu2e
setup muse
cd <a working dir>
  ... establish a backing build
muse link

Recent published releases:
Recent CI builds
2021-03-12 21:45 master/43ebbdfe
2021-03-12 12:44 master/c2409d93

muse link master/43ebbdfe
   ... establish partial code checkout
        include your github username to setup an origin remote (requires authentication)
mgit init rlcee
cd Offline
mgit add HelloWorld
sed -i 's/From/From '$USER'/' HelloWorld/src/HelloWorld_module.cc

git remote -v
git status

cd ..

muse setup
muse build -j 20 --mu2eCompactPrint
mu2e -c HelloWorld/test/hello.fcl

Example of jobs submission

  .. in any Muse build
muse tarball
Tarball: /mu2e/data/users/rlc/museTarball/tmp.BqvJOks3xI/Code.tar.bz2

mu2eprodsys ... \
  --code /mu2e/data/users/rlc/museTarball/tmp.BqvJOks3xI/Code.tar.bz2