Describe the bug Running TGraph.Fit() with EnableImplicitMT() produces results that are not reproducible run-to-run. Expected behavior I expect that running TGraph.Fit() on the identical data, should produce identical results, regardless of enabled multithreading (if run correctly). To Reproduce …

Hi @FoxWise Thanks for reporting this issue on the ROOT forum! Adding @Danilo and @jonas in the loop who can help with this. Cheers, Aaron

See also this GitHub issue for the follow-up discussion: TGraph.Fit() usage with EnableImplicitMT() produces inconsistent results opened 07:24PM - 02 Jan 26 UTC (UTC) closed 09:00AM - 07 Jan 26 UTC (UTC) …

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TGraph.Fit() usage with EnableImplicitMT(). Is TGraph.Fit() thread-safe?

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bug, rdataframe

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