Need Help with TTreeProcessorMT: Increasing Number of Threads Beyond 7

[Wile_E_Coyote]

Simple way to test/prove EnableImplicitMT performance

TL;DR I’m not too surprised you don’t see a great scaling with your setup. The motivation is probably a mix of several of the potential issues I mention below. This write-up should provide some indication of how to get nicer results by cleaning up the benchmark. Reading from NFS, running with more threads than the number of physical cores, measuring the full runtime of the application which includes just-in-time-compilation and other overheads, and depending on the CPU configuration (CPU thrott…