Hi there, I think I found one of the reasons why Cycles is slower on CPU when compiled with MSVC. The compiler flags are not quite right here. We use:
/arch:sse2 /fp:fast to compile the cpu kernel. We should tell the compiler to use intrinsics and favor faster binaries with: /arch:sse2 /fp:fast /Oi /Ot This gives a slight speedup on my dev machine, I had no time to do a in depth test yet but I will ;) I have 3 test Systems ready and will file a complete report until Saturday. /Jürgen _______________________________________________ Bf-committers mailing list [email protected] http://lists.blender.org/mailman/listinfo/bf-committers
