Re: SSE
Re: SSE
- Subject: Re: SSE
- From: Joe Lake <email@hidden>
- Date: Thu, 15 May 2008 13:55:26 +0000 (UTC)
the code uses a lot of functions like _mm_load_ps and _mm_set_ps1, which I
haven't seen in any of apple's guides. is it possible that these are
necessary on windows but superfluous on macs (because of compiler
differences or something)? sorry if this is a dumb question.
Joe
On Thu, 15 May 2008, tahome izwah wrote:
Did you check your Xcode project settings to use the SSE extensions?
Do you set some specific options to treat underflow conditions?
--th
2008/5/15 Joe Lake <email@hidden>:
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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| References: | |
| | >SSE (From: Joe Lake <email@hidden>) |
| | >Re: SSE (From: "tahome izwah" <email@hidden>) |