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SSE

Subject: SSE
From: Joe Lake <email@hidden>
Date: Thu, 15 May 2008 00:42:21 +0000 (UTC)

hello all,

I have a vst written for windows that I'm building on os x. the vst is extremely processor intensive and uses the sse vector math functions define in xmmintrin.h. I didn't have to change any of this code to get it to build on os x.

my computer is a 2GHZ core duo with 2GB RAM which boots both tiger and windows xp. I'm testing the vst in max/msp. on windows it uses 34% of the cpu, but on os x it uses 100% of the cpu.

can anyone think of any reasons this would be happening? is it possible that the _mm_etc functions are not actually using the SIMD hardware on os x? my project compiles fine regardless of whether I pass -msse to the compiler. does anyone else have any experience using these extensions?

thanks a lot!

Joe
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