Improving dot product for standard multidimensional D arrays
p.shkadzko at gmail.com
Mon Mar 2 18:17:05 UTC 2020
On Monday, 2 March 2020 at 15:00:56 UTC, jmh530 wrote:
> On Monday, 2 March 2020 at 13:35:15 UTC, p.shkadzko wrote:
> Thanks. I don't have time right now to review this thoroughly.
> My recollection is that the dot product of two matrices is
> actually matrix multiplication, correct? It generally makes
> sense to defer to other people's implementation of this. I
> recommend trying lubeck's version against numpy. It uses a
> blas/lapack implementation. mir-glas, I believe, also has a
> Also, I'm not sure if the fastmath attribute would do anything
> here, but something worth looking into.
Yes, this it is a sum of multiplications between elements of two
matrices or a scalar product in case of vectors. This is not
simple element-wise multiplication that I did in earlier
I tested @fastmath and @optmath for toIdx function and that
didn't change anyting.
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