14-18 October 2013
Amsterdam, Beurs van Berlage
Europe/Amsterdam timezone

Stitched Together: Transitioning CMS to a Hierarchical Threaded Framework

14 Oct 2013, 17:25
Berlagezaal (Amsterdam, Beurs van Berlage)


Amsterdam, Beurs van Berlage

Oral presentation to parallel session Event Processing, Simulation and Analysis Event Processing, Simulation and Analysis


Elizabeth Sexton-Kennedy (Fermi National Accelerator Lab. (US))


Modern computing hardware is transitioning from using a single high frequency complicated computing core to many lower frequency simpler cores. As part of that transition, hardware manufacturers are urging developers to exploit concurrency in their programs via operating system threads. We will present CMS' effort to evolve our single threaded framework into a highly concurrent framework. We will outline the design of the new framework and how the design was constrained by the initial single threaded design. Then we will discuss the tools we have used to identify and correct thread unsafe user code. Finally we will end with a description of the coding patterns we found useful when converting code to being thread safe.

Primary author

Dr Christopher Jones (Fermi National Accelerator Lab. (US))


Elizabeth Sexton-Kennedy (Fermi National Accelerator Lab. (US))

Presentation Materials