I am curious about performance of Java numerical algorithms, say for example matrix matrix double precis开发者_JS百科ion multiplication, using the latest JIT machines as compared for example to hand t
I\'m benchmarking some SSE code (multiplying 4 floats by 4 floats) against traditional C code doing the same thing. I think my benchmark code must be incorrect in some way because it seems to say that
What\'s the best way ( sse2 ) to reduce a _m128 ( 4 words a b c d) to one word? I want the low part of each _m128 components: