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When ROOT doesn't have IMT enabled, it will fall back to single-thread computation.
It integrates well into tbb scheduling. If ROOT runs with other tbb things in the same process, one can configure the number of threads that ROOT uses.
It listens to ROOT::EnableImplicitMT(N)
When done, the feature should be announced in release notes and documentation.
Is your feature request related to a problem? Please describe.
The problem is only speed. :-)
Describe the solution you'd like
Use
TExecutor
to parallelise for loops in RooFit. Currently, you have to use something likeAlternatively, one can fill a vector with something like
pair<size_t, size_t>(begin, end)
, and run this in parallel using TExecutor.Describe alternatives you've considered
#7873
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