Do you use the parallel statement at all as described in the manual? Or only a plain spawn? See
[https://nim-lang.org/docs/manual.html#parallel-spawn](https://nim-lang.org/docs/manual.html#parallel-spawn) You may also need a FlowVar. I did test parallel once for calculation of a convex hull, see [https://forum.nim-lang.org/t/483/2](https://forum.nim-lang.org/t/483/2) Was not really fast at that time, but I think that is fixed already.
