KinKal

Local KinKal development with Muse

Under development morning of Aug 3, 2023

Introduction

This section describes how to do simultaneous development of KinKal and Offline. Because KinKal uses a different build system than does Offline, you need to take a few additional steps when you start. Once you have taken these steps "muse build" will first build KinKal and install it into a local UPS area; it will then build Offline using the local UPS area as the source for finding KinKal.

This writeup assumes that you have a basic knowledge of UPS and of Muse; in particular you should understand what a Muse envset is and how to use it. Normally you will choose the envset recommended by Offline and this example is written assuming that's what you want to do. If you are new to this work and you need to use a different envset, your mentor will tell you which one to use. Section #Using An Alternate envset describes how the workflow must be changed in order to use a different envset.

Initial build

1. In a clean shell, create a Muse workDir and cd there

   mkdir 'myworkdir'
   cd 'myworkdir'
   

2. clone KinKal into the Muse workdir as your would normally. Add the Mu2e KinKal repo as a remote and checkout the main branch of the Mu2e KinKal remote.

   git clone git@github.com:<your GitHub username>/KinKal
   cd KinKal
   git remote add -f mu2e https://github.com/KFTrack/KinKal
   git checkout -b work_branch mu2e/main
   cd ..
   

3. Clone your fork of Offline into the muse workdir as you would normally. Add the Mu2e Offline repo as a remote and checkout the main branch of the Mu2e Offline remote. If you need other muse-aware repos (Production, TrkAna, ...) for your workflow, you can add them too

   git clone git@github.com:<your GitHub username>/Offline
   cd Offline
   git remote add -f mu2e https://github.com/Mu2e/Offline
   git checkout -b work_branch mu2e/master
   cd ..
   # Optional: repeat the above pattern for any of Production, TrkAna ...
   

4. Setup the Mu2e development environment

   setup mu2e
   setup codetools
   

5. Choose a UPS version number for your local build of KinKal. The number will have no meaning outside of your muse working directory so you can use any number that is not already in use. Choosing version 9.9.9 is likely to be safe for a long time to come. The version number must have 3 dot separated fields.
6. Build KinKal; create a local ups directory and install the build of KinKal into that UPS area.

   kk2ups -v "9.9.9" -b -i -m "" -j 8
   

   On mu2ebuild01 you may increase 8 to 24. This command will build both the profile and debug versions of KinKal. The option -m with an empty string tells Kkk2ups to choose the version of root that matches the default for building Offline. See section #Using An Alternate envset for when you should provide a non-empty string.

7. If everything worked correctly, the output of this command will end with

   Begin install.
   Begin install of prof version.
   Begin install of debug version.
   KinKal_to_UPS/build completed with status 0
   

8. Look at the files created by kk2ups:

   ls artexternals/KinKal/
   

   This will produce the output:

   v09_09_09  v09_09_09.version
   

   Also do

   ls artexternals/KinKal/v09_09_09
   

   This will produce output similar to:

   include  slf7.x86_64.debug.e20.p3915  slf7.x86_64.e20.p3915.prof  source  ups
   

   As Mu2e Offline evolves to newer versions of g++ and python, the qualifiers e20 and p3915 will change.

9. Look at Offline/.muse to find the name of the default envset for building Offline. In these instructions we will call that pxyz. Make a local muse subdirectory and make a copy of pxyz inside of it.

   mkdir muse
   cd muse
   cp /cvmfs/mu2e.opensciencegrid.org/DataFiles/Muse/pxyz unnn
   

   where unnn is the name of your copy envset, for example u046

10. Edit the envset unnn to make two changes
    1. Find the line that sets up KinKal and replace the version number with v09_09_09

          setup KinKal v09_09_09  -q +${MUSE_BUILD}:+${MUSE_COMPILER_E}:+${MUSE_PYTHON}'
          

    2. Add the following line after the last setup command:

        export MUSE_PREBUILD="kk2ups -v \"9.9.9\" -b -i -j 24" 

       This line is not the same as the command given in step 6; it omits the -m argument. When muse executes this command a version of root will already be setup in your environment. kk2ups will use that version of root.

11. cd back to the muse working directory and setup muse using the envset you just created

    cd ..
    muse setup -q unnn

12. Build Offline and any other repos that you cloned in step 3; if anything has changed in KinKal since the last build, this command will also rebuild KinKal and reinstall it in the local artexternals.

    muse build -j 8 

    On mu2ebuild01 you may increase 8 to 24.
13. Now you can edit files in any of KinKal, Offline and any other locally cloned repos. When you want to rebuild you can do so with a single command:

    muse build -j 8 

    On mu2ebuild01 you may increase 8 to 24.

About kk2ups

1. The command kk2ups is short for "KinKal to UPS" and is found in codetools. The command you issued in step 6 will
   1. (-b) build the existing checkout in the local clone of KinKal
   2. (-i) if necessary, create a local directory named artexternals, configure it as a UPS repositor
   3. (-i) copy the build of KinKal into artexternals/KinKal/v09_09_09 and configure it as a UPS product.
2. The full syntax of the kk2ups option -m is: -m "args", where args is will be given as arguments to muse setup. For example to request envset pabc

   kk2ups -v "9.9.9" -b -i -m "-q pabc" -j 8
   

   Internally kk2ups looks up the version of root that is chosen by "muse setup $args" and uses that version of root to build KinKal. In step 6, args is an empty string, which tells kk2ups to use the default envset. Because you have a clone of Offline in your Muse working area, the default envset is that specified by Offline/.muse.

3. kk2ups has an online help feature:

   kk2ups -?
   

4. To learn more about kk2ups you can read https://github.com/Mu2e/codetools/blob/main/KinKal_to_UPS/README.md.

Using An Alternate envset

If you need to use an alternative envset, you need to modify two steps in the above procedure. In this example, the alternate envset is named pabc:

• In step 6, supply the alternate envset as the value of the -m argument to kk2ups

  kk2ups -v "9.9.9" -b -i -m "-q pabc" -j 8
  

• In step 10.1, make a copy of the alternate envset

  mkdir muse
  cd muse
  cp /cvmfs/mu2e.opensciencegrid.org/DataFiles/Muse/pabc unnn
  

Be sure to use the same envset in both places.

Rebuilding KinKal

In earlier versions of this workflow there were explicit steps required to rebuild KinKal when needed. These steps are now done automatically/

Returning to the area

If you want to restart work in a new shell, follow these steps:

cd 'workdir'
setup mu2e
setup codetools
muse setup -q unnn

where unnn is the envset you created during the initial build.

Adding debug build

Due to the way that UPS works, it is not possible to work on both prof and debug builds in the same shell. You need to do each in a separate shell.

To add a debug build to an existing prof build, start a clean shell and:

cd 'myworkdir'
setup mu2e
setup codetools
muse setup -q unnn:debug
muse build -j 8

On mu2ebuild01 you may change the 8 to 24.

This will make a debug build of KinKal and install in it the local artexternals. Then it will build Offline and any other repos you cloned in step 3.

What if you update Offline?

If you update the version of Offline in your working area the first step is to compare the old and new versions of Offline to see if the envset specified in Offline/.muse has changed. If it has not changed, there are no additional steps and you can proceed as described in #Returning to the area.

If it has changed, do the folllowing in a clean shell. In this example the new envset is named pdef.

1. Setup the environment:

   cd 'myworkdir'
   setup mu2e
   setup codetools
   

2. Choose a new version number for the UPS version of KinKal, say 9.9.8. and repeat step 6

kk2ups -v "9.9.9" -b -i -m "" -j 8

There is no need to specify the new envset because kk2ups will pick it up from Offline/.muse.

3. Choose a new name for your modified envset, say u047.
4. Repeat steps 9 and 10 the new envset name, pdef, the new KinKal version 9.9.8 and the new modifed envset name u047
5. In step 11 use u047 instead of u046.

   Original Notes

   To develop new code in KinKal and call it in Offline you will need to define your own version of KinKal and install it in your own private extension to UPS. You need to do some initial setup in a throwaway shell:

   • create a Muse workDir and cd there
   • checkout your fork of Offline in the muse workdir as you would normally
   • checkout your fork of KinKal in the muse workdir .The KinKal development model is the same as Offline: start with the head of main, create your own branch, develop and commit to that, and make a PR to KinKal when your development is ready.
   • checkout tag v0.1.4 of KinKal_to_UPS
   • build KinKal according to the instructions in README. make sure to run the test (make test)
   • create the directory 'artexternals' in the muse workdir
   • execute 'muse setup -q (prof, debug) depending on what you want. Note you can have both builds in the same workdir, but any given shell can be only one or the other.
   • invoke KinKal_to_UPS/build -v your_version -i -b -j10, where your_version is whatever version you want (it is temporary). I have this command saved in a script /mu2e/app/users/brownd/KFTrack/install_KinKal.sh
   • define a user envset in the ./muse directory. mine is /mu2e/app/users/brownd/KFTrack/muse/u002 The name is unimportant. Edit that so it refers to your_version of KinKal

   Then, close that shell. From then on, you can work with KinKal and/or Offline in this muse workdir with the following commands:

   • create a new shell, and cd to your muse workdir
   • exectue 'export PRODUCTS=${PWD}/artexternals:${PRODUCTS}' This tells UPS to look for KinKal in your local install
   • execute 'muse setup -q (prof, debug) your_envset'

   (I have these defined as /mu2e/app/users/brownd/KFTrack/setup_prof.sh and setup_debug.sh in my area)'

   • Any time you change KinKal rebuild and rerun the tests, and then rerun install_KinKal.sh
   • Any time you change Mu2eKinKal (or after changing and rebuilding KinKal as above) rebuild Offline using 'muse build'

   Second version: Local KinKal development with Muse

   Initial build

   To develop new code in KinKal for new use cases in Offline you will need to checkout KinKal and install it in your own private extension to UPS. You need to do some initial setup in a throwaway shell:

   • create a Muse workDir and cd there
   • setup Muse. This puts a root and other products in the environment, which the KinKal build will use

   mkdir 'myworkdir'
   cd 'myworkdir'
   

   • checkout your fork of Offline in the muse workdir as you would normally. Add the main mu2e repo as a remote. If you need other muse-aware repos (Production, TrkAna, ...) for your workflow, you can add them too

   git clone git@github.com:<your GitHub username>/Offline
   cd Offline
   git remote add -f mu2e https://github.com/Mu2e/Offline
   git checkout -b work_branch mu2e/master
   cd ..
   (git clone git@github.com:<your GitHub username>/TrkAna.git)
   

   • create a fork of KinKal in GitHub (if you don't already have one). In a browser, go to the KinKal GitHub page, then under the 'fork' menu select 'Create a new fork'. You must be logged in to your GitHub account.
   • checkout your fork of KinKal in the muse workdir .The KinKal development model is the same as Offline: start with the head of main, create your own branch, develop and commit to that, and make a PR to KinKal when your development is ready. Start with the current version of KinKal

   git clone git@github.com:<your GitHub username>/KinKal
   cd KinKal
   git remote add -f mu2e https://github.com/KFTrack/KinKal
   git checkout -b work_branch mu2e/$KINKAL_VERSION
   cd ..
   

   • build KinKal according to the instructions in README. You can build either a profile (optimized)

   or debug. If you want both, just repeat this step. mkdir build_profile (or build_debug) cd build_profile (or build_debug) cmake ../KinKal -DCMAKE_BUILD_TYPE=Release (or Debug) make -j 20 make test cd ..

   • checkout KinKal_to_UPS, and use it to make your build of KinKal visible to Offline through UPS.

   git clone https://github.com/Mu2e/KinKal_to_UPS
   mkdir artexternals
   rsync -aur /cvmfs/mu2e.opensciencegrid.org/artexternals/.upsfiles artexternals/
   

   • install your build of KinKal in artexternals. You must assign a tag to your build; the value is arbitrary, but it shouldn't correspond to an actual tag. Below a dummy is used.

   KinKal_to_UPS/build -v v9.9.9 -i -d artexternals
   

   • create an envset that points to your local UPS version of KinKal. Start with a copy of the current Offline envset.
   • edit the copy so that it references your local version of KinKal. IE replace the tag in the line 'setup -B KinKal v00_01_06 -q +${MUSE_BUILD}:+${MUSE_COMPILER_E}:+${MUSE_PYTHON}' with your tag (v09_09_09)

   mkdir muse
   cp $MUSE_ENVSET_DIR/$MUSE_ENVSET muse/u999
   vim muse/u999
   ...
   

   At this point, KinKal is built and UPS-installed locally, but the current setup of Offline still points to the old version of KinKal. To get Offline to use your new version of KinKal you need a new shell. Close your existing shell, and start a new one, then cd back to your work directory. Note you only need to do this when setting up a new work directory; the following commands are needed for all subsequent use of this workdir

   • close your current shell
   • create a new shell, and cd to your muse workdir.
   • Tell UPS where to look find your local version of KinKal
   • setup muse, specifying the envset you created, which points to your local KinKal installation

   exit (closes the current shell)
   ssh 'myuser'@mu2egpvm04.fnal.gov
   cd 'myworkdir'
   setup mu2e
   export PRODUCTS=${PWD}/artexternals:${PRODUCTS}
   muse setup -q u999
   

   • Now build Offline (and any other muse-aware repos you've cloned)

   muse build -j 20

   Rebuilding KinKal

   Once you have a stock build of Offline and KinKal, you can can develop both code sets coherently.

   • edit KinKal as needed
   • edit Offline as needed to exploit new KinKal features
   • rebuild KinKal and update the installation
   • rebuild Offline

   (edit KinKal/*/*)
   (edit Offline/*/*)
   cd build_profile
   make -j 20
   make test
   cd ..
   KinKal_to_UPS/build -v v9.9.9 -i -d artexternals
   muse build
   

   Returning to the area

   • to return in a new shell and simply run the code you've already edited and built, you only need to repeat the setups:

   cd 'workdir'
   setup mu2e
   export PRODUCTS=${PWD}/artexternals:${PRODUCTS}
   muse setup -q u999
   

   Adding debug build

   An environment can only be setup once, so for an process, you must choose one or the other. The steps all follow form the prof build

   • setups. Setup muse in debug. Since you don't have the new KinKal in debug, you can setup root by setting up the published versions

   setup mu2e
   cd 'workdir'
   muse setup -q debug
   

   • build debug KinKal using the same fake version as for prof

   mkdir build_debug
   cd build_debug
   cmake ../KinKal  -DCMAKE_BUILD_TYPE=Debug
   make -j 20
   make test
   cd ..
   KinKal_to_UPS/build -v v9.9.9 -i -d artexternals
   

   • now that the debug version of the local KinKal product is available, you need to setup in a new shell to get the full environment

   exit
   ssh 'myuser@mu2egpvm04.fnal.gov'
   cd 'workdir'
   setup mu2e
   export PRODUCTS=${PWD}/artexternals:${PRODUCTS}
   muse setup -q u999:debug
   muse build
   

   What if you update Offline?

   If you update the version of Offline in your working area:

   1. Compare the old and new versions of Offline to see if the version or qualifiers of root have changed.
   2. If they have not, you are done with this section. If they have, then you need to do the following:
   3. Make a new build of KinKal using the modified root and install it in your local artexternals directory.
      1. Hint: you may wish to investigate the -s versionSuffix option in KinKal_to_UPS.
      2. Hint: remember to start a new login session
   4. Follow the instructions in Muse#Maintaining_a_Customized_Setup to update your local muse/uNNN file to select your new build of KinKal.