For Run 3, ATLAS redesigned its offline software, Athena, so that the
main workflows run completely multithreaded. The resulting substantial
reduction in the overall memory requirements allows for better use
of machines with many cores. This talk will discuss the performance
achieved by the multithreaded reconstruction as well as the process
of migrating the large ATLAS code base and tools and techniques
that were useful in debugging threading-related problems.
|Consider for long presentation||No|