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Good question. I avoid atomics, so I might not be the best person to comment on this, but it seems that the amount of computational work you're doing in a single step is insufficient for performance ...

If you have jobs[0] and jobs[1] on the same cache line (64 bytes on x86-64 platforms), then false sharing may be an issue. You may want to ensure that each element of the jobs array is on its own ...

It may be helpful if you could provide a minimal reproducible example of the problem, which includes a function main and all #include directives, as well as the exact input required to reproduce the ...

Thanks for the answer. I'm not quite sure of the benefit of workers "pulling", since I'd still have to choose a chunk length per-job (I immediately know the total work length before ...