(j3.2006) What do typical processors do?

[Steve Lionel]

I would absolutely use *GEMM from an optimized library and not assume the
compiler will recognize that particular paradigm. A good library, such as
Intel MKL, can make use of parallelism as well as processor-specific
instruction sets. *GEMM, in particular, gets LOTS of attention from library
developers.

Steve

On Tue, Jul 18, 2017 at 7:00 PM, Van Snyder <Van.Snyder at jpl.nasa.gov> wrote:

> Should I expect a processor to optimize
>
>   C = matmul ( A, conjg(transpose(B)) )
>
> without making two or three temps, or should I write a matmul that has
> options to do that, or use *GEMM?
>


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