libacml from AMD is also a good candidate to try: http://www.ualberta.ca/AICT/RESEARCH/LinuxClusters/doc/acml350/Linking_002fWindows.html
David On Thu, Jan 19, 2012 at 2:59 AM, Richard Guenther <richard.guent...@gmail.com> wrote: > On Thu, Jan 19, 2012 at 7:37 AM, Marc Glisse <marc.gli...@inria.fr> wrote: >> On Wed, 18 Jan 2012, willus.com wrote: >> >>> For those who might be interested, I've recently benchmarked gcc 4.6.3 >>> (and 3.4.2) vs. Intel v11 and Microsoft (in Windows 7) here: >>> >>> http://willus.com/ccomp_benchmark2.shtml >> >> >> http://en.wikipedia.org/wiki/Microsoft_Windows_SDK#64-bit_development >> >> For the math functions, this is normally more a libc feature, so you might >> get very different results on different OS. Then again, by using >> -ffast-math, you allow the math functions to return any random value, so I >> can think of ways to make it even faster ;-) > > Also for math functions you can simply substitute the Intel compilers one > (GCC uses the Microsoft ones) by linking against libimf. You can also make > use of their vectorized variants from GCC by specifying -mveclibabi=svml > and link against libimf (the GCC autovectorizer will then use the routines > from the Intel compiler math library). That makes a huge difference for > code using functions from math.h. > > Richard. > >> -- >> Marc Glisse
