[infogulch]

That's not true. If you look at the comparisons, the cpu time taken by C is actually more than rust, and the cpu load looks about even. Note the C version uses:

    #pragma omp parallel sections

[gigatexal]

Ahh dang I didn't know you could do compiler run parallelism.

[gens]

>.. and the cpu load looks about even.

318% is 20% bigger then 265%.

[infogulch]

And 5.30s is about 20% faster than 6.46s. We're just throwing around numbers now.

My point was that the cpu load is "about even" compared to if the C version was single-threaded, in which case it would look more like 200-300% bigger cpu load instead of merely 20%.