Re: forall and do loop
- From: Tobias Burnus <burnus@xxxxxxxx>
- Date: Fri, 27 Jul 2007 05:33:37 -0700
On Jul 27, 11:55 am, highegg <high...@xxxxxxxxx> wrote:
Commercial compilers (Intel, EkoPath) even offer the possibility to
use the profiling information for subsequent optimizations, which is
potentially very powerful approach.
GCC has the same - does this make GCC a commercial compiler? ;-)
GCC has the options: -fprofile-generate and -fprofile-use.
Depending on the program, performance might be gained or lost. For the
current gfortran 4.3 and the Polyhedron test suite, see
http://physik.fu-berlin.de/~tburnus/gcc-trunk/benchmark/#rt
As one test gets 24% slower, the few per cent gains for the other
tests average out (in the geometric mean).
(I filled a bugreport about it, #32913.)
Tobias
.
- Follow-Ups:
- Re: forall and do loop
- From: highegg
- Re: forall and do loop
- References:
- forall and do loop
- From: aeroguy
- Re: forall and do loop
- From: glen herrmannsfeldt
- Re: forall and do loop
- From: aeroguy
- Re: forall and do loop
- From: highegg
- Re: forall and do loop
- From: aeroguy
- Re: forall and do loop
- From: highegg
- forall and do loop
- Prev by Date: Re: forall and do loop
- Next by Date: Re: forall and do loop
- Previous by thread: Re: forall and do loop
- Next by thread: Re: forall and do loop
- Index(es):
Relevant Pages
|
