[ODE] SIMD ODE code?

[Thomas Yeh]

I used -mmmx -msse2 -msse -mfpmath=sse
I guess I should try -march=pentium4.

Tom
On Wed, 1 Feb 2006, Rodrigo Hernandez wrote:

>
> There is none that I know off, at least not an official one yet.
>
> dVector3 is defined as float[4], and I added the "--with-arch="
> parameter to configure in prevision for SIMD optimization, but
> nothing more is there.
>
> a good starting point towards SIMD integration would be modifying the
> macros in odemath.h to use SIMD intrinsic functions or inline asm and
> defining dVector3 and dVector4 as __attribute__ ((aligned (16))).
>
> Also, what flags are you using? in for a Pentium 4 you'd want to use
> -march=pentium4 |-mfpmat=sse and maybe throw in -malign-double.
> |
> Thomas Yeh wrote:
>
> >Is there a SIMD optimized version of ODE somewhere?
> >
> >When I compile ODE with the SIMD and MMX flags turned on for gcc, the
> >binaries generated seem to run slower on the P4 than the normal release
> >compilation.
> >
> >
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>