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/******************************************************************************
 *   Copyright (C) 2019 GSI Helmholtzzentrum für Schwerionenforschung GmbH    *
 *   Copyright (C) 2019-2024 Members of R3B Collaboration                     *
 *                                                                            *
 *             This software is distributed under the terms of the            *
 *                 GNU General Public Licence (GPL) version 3,                *
 *                    copied verbatim in the file "LICENSE".                  *
 *                                                                            *
 * In applying this license GSI does not waive the privileges and immunities  *
 * granted to it by virtue of its status as an Intergovernmental Organization *

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namespace ROOT::Internal::RDF
{
    std::string GetBranchOrLeafTypeName(TTree& t, const std::string& colName);
}

class InputRootFiles
{
  public:
    InputRootFiles(std::string_view tree_name) { data_ = std::make_unique<TChain>(tree_name.data()); }
    void add_filename(std::string_view filename)

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Apptainer container setup for GSI servers

This instruction explains how to setup a working environment for GSI servers (lustre.hpc.gsi.de nodes). The setup is involved with multiple programs, such as TMux, zsh, apptainer and ssh. A similar setup can should also be achievable using alternatives, like bash and screen.

Important

The server address lustre.hpc.gsi.de contains multiple nodes. Starting a ssh session with this address could be led to a different node, therefore, losing all tmux sessions from the last login. Users should start a ssh session with a specific node address. In the following example, dslustre01.hpc.gsi.de is used as an example.

Step 1: SSH configuration

In the local machine (either your personal computer or a terminal), you should have already created the ssh public and private key. By default, your ssh configuration folder should be ~/.ssh. Open the file config in the folder (create one if config file doesn't exist)

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Usage

Example:

point_branches = {
    "NeulandPoints.fTime": "float",
    "NeulandPoints.fDetectorID": "int32",
    "NeulandPoints.fELoss": "float64",
    "NeulandPoints.fX": "float64",
 "NeulandPoints.fY": "float64",

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Modern C++ with modules

Synopsis

main.cpp:

import std;

auto main() -> int
{
   const auto values = std::vector{1, 2, 3};

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Installation

Conan can be installed via pip, or any python package manager, such as miniforge3:

conda install conan

Main documentation site: https://docs.conan.io/2/

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void digitization() // Function name must be exactly the same as the filename (without extension part)
{
    TStopwatch timer;
    timer.Start();

    FairLogger::GetLogger()->SetLogScreenLevel("info"); // change the log level to "debug", "info", "warn", "error"

    FairRunAna run;
    run.SetSource(new FairFileSource("test.simu.root")); // Here specify the full path to the input simulated data.
    run.SetSink(new FairRootFileSink("test.digi.root")); // Here specify the full path to the output digitized data.