Using SSE in c# is it possible?

Question

I was reading a question about c# code optimization and one solution was to use c++ with SSE. Is it possible to do SSE directly from a c# program?

Answer 1

Filip is correct. I have another, older post showing a similar, but more detailed example. I have actually run this code, and modified it myself to prove to myself that it works. I am contemplating using this technique in a project I am working and is why I am out looking to see what may be new since this is a bit old. As the author implies, you can write any function you wish in C++, compile it, then copy the bytes into your C#.

http://blogs.msdn.com/b/devinj/archive/2005/07/12/438323.aspx

I would add that Joe's CLI C++ class is a good idea as well, however, I don't think the sse compiler flag and the /clr flag are compatible on the same project. I just verified that: have to write your high perf code in a separate project to use the SSE (/arch:sse or /arch:sse2) compiler flag as /clr is incomatible. To do anything much more complex than do simple arithmetic on a few inputs, I think this is the best approach.