This code corresponds to an implementation of the tapered All-Silicon Tracker design described here into the Fun4All framework.

Getting Started

1. The code was originally ran inside a Singularity container, which can be found here: https://github.com/sPHENIX-Collaboration/Singularity One needs to run ./updatebuild.sh and follow the steps in the README of that repo.

2. The code needs to built and installed with Fun4All, as outlined here: https://wiki.bnl.gov/sPHENIX/index.php/Example_of_using_DST_nodes. References to for this repository mean g4lblvtx/src/, where one should see the autogen.sh file. Create a build and install directory (I suggest in the same directory that holds this repo) and follow the instructions under the "Building a package" section from the link.

The main steps are:

mkdir build
cd build
/global/path/to/g4lblvtx/source/autogen.sh --prefix=$MYINSTALL
make -j 4
make install
source /global/path/to/Singularity/cvmfs/sphenix.sdcc.bnl.gov/x8664_sl7/opt/sphenix/core/bin/sphenix_setup.sh -n
export MYINSTALL=/global/path/to/Singularity/install
source /global/path/to/Singularity/cvmfs/sphenix.sdcc.bnl.gov/x8664_sl7/opt/sphenix/core/bin/setup_local.sh $MYINSTALL

Running a batch job on Cori

From outside the container:

1. cd cori_batch.
2. Edit the run_shared.sh script (see instructions below).
3. Run sbatch run_shared.sh

Editing the run_shared.sh script

Edit the following lines:

1. #SBATCH --time=1:00:00 -> Approximate time that running a job will take. A higher value ensures that your job is not stopped because it is taking too long. A lower value ensures that your job starts running sooner.
2. #SBATCH --array=0-999 -> This means the output will be split into 1000 output root files.
3. shifter ./AllSi_shifter.sh $SLURM_ARRAY_TASK_ID 100 -> The important parameter to keep in mind here is the number at the end of the line. This is the number of events per root split.

Checking the status of your job:

1. On your internet browser, go to: https://my.nersc.gov/.
2. Login using your Nersc credentials.
3. Go to the tab Cori Queues.