WP 1.7 Scheduler tests

Experiments with asynchronous scheduler for event-processing framework using oneTBB and C++20 coroutines.

Getting started

Requirements:

• CMake 3.24 or higher
• C++20 compatible compiler
• CUDA 12.4 or higher
• Patatrack standalone version
• Boost 1.78 or higher

The project will automatically fetch and build other dependencies:

• traccc
• oneTBB

To build the project, clone the repository and run the following commands:

Patatrack_ROOT=<path_to_pixeltrack_standalone> cmake -S . -B build
cmake --build build

Then run the executables:

The simple test:

build/bin/schedule_simple

or the traccc test:

The data should be downloaded (once) in the build tree by running build/_deps/traccc-src/data/traccc_data_get_files.sh This will download the data in-place in the script's directory. Then run the test:

TRACCC_TEST_DATA_DIR=build/_deps/traccc-src/data/ ./build/bin/schedule_traccc

The download instructions for the traccc data are in the traccc readme

git clone https://github.com/acts-project/traccc.git
./traccc/data/traccc_data_get_files.sh

Traccc 101

Traccc is a framework agnostic algorithm. Gaudi is the framework (services, algorithms tools, orchestrator), based on TBB Athena is a framework based on Gaudi, but re-implements parts of it.

Gaudi modules

States see wp1.7-scheduler-tests/src/AlgExecState.hpp (suspened is a new addition)

Dependencies

• Each algo defined data dependency (like in CMS)
• Sequencers are algos or modules that can have sub-algo or sub-modules that express additional non-data dependency
  • Sometimes data dependency is not fully expressed
  • Sequencers also express filtering

Here only data dependency. In Gaudi statuses are different depending we wait for data or non data dependency.