[cfe-dev] Clang build of ATLAS (and speed comparison)

[Miles Bader]

Vincent Habchi <vince at macports.org> writes:
> As a preliminary report, here is what spits out the ATLAS built-in
> benchmark (‘make time’) after a compilation with the -Oz
> flag. Reference stands for an installation presumably with GCC4.x on
> Linux (Clint, could you elaborate on this?).

"gcc 4.x" is absurdly vague though -- gcc has changed hugely between 4.0
and 4.7.  You also have no idea how the reference build was done.

It seems much more reasonable to just build the benchmarks with a
suitably recent version of gcc (4.6 probably) yourself.

-miles

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