------- Comment #1 from linuxl4 at sohu dot com 2009-07-15 15:49 -------
My server is an atom330/gentoo
gfortran -v
GNU Fortran (GCC) 4.5.0 20090715 (experimental)
Copyright (C) 2009 Free Software Foundation, Inc.
gfortran 1.f90; time ./a.out
4.28173363E+09
real 120m30.599s
user 120m29.164s
sys 0m0.464s
ifort 1.f90; time ./a.out
4.3692155E+09
real 2m56.217s
user 2m55.871s
sys 0m0.352s
if I call the functions(sin,cos,tan) from intel's libimf.so, then
gfortran 1.f90 -limf
4.31716608E+09
real 6m39.177s
user 6m38.289s
sys 0m0.512s
--
linuxl4 at sohu dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|this fortran program is too |this fortran program is too
|slow |slow
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40766
