Re: Calling conventions (particularly 32-bit ARM)

Stephen Fuld <sfuld@alumni.cmu.edu.invalid> schrieb:

Has Lapack (and the other old style Fortran numeric
code that Waldek mentioned) lost its/their importance as a major user of
CPU cycles?

>
It's less than it used to be in the days when supercomputers
roamed the computer centers, but for these applications where
it matters, it can be significant.
>

Or do these subroutines consume so many CPU cycles that the
overhead of the large number of parameters is lost in the noise?

>
If you have many small matrices to multiply, startup overhead
can be quite significant.  Not on a 2000*2000 matrix, though.
>

Or is
there some other explanation for Mitch not considering their importance?

>
I think eight arguments, passed by reference in registers, is not
too bad.