Improving dot product for standard multidimensional D arrays

[jmh530]

On Tuesday, 3 March 2020 at 10:25:27 UTC, maarten van damme wrote:
> it is difficult to write an efficient matrix matrix 
> multiplication in any language. If you want a fair comparison, 
> implement your naive method in python and compare those timings.
> [snip]

And of course there's going to be a big slowdown in using native 
python. Numpy basically calls blas in the background. A naive C 
implementation might be another comparison.