Re: [gmx-users] AVX2 SIMD intrinsics speed boost

2013-07-12 Thread Erik Lindahl
Hi, We will have AVX2 acceleration ready for general usage before the end of July (together with some other goodies), and it will be markedly faster, but until it's ready and tested to give correct results we can't say anything about the final performance. However, in general AVX2 will have th

[gmx-users] AVX2 SIMD intrinsics speed boost

2013-07-11 Thread Bin Liu
Hi all, If my understanding is correct, GROMACS parallelization and acceleration page indicates AVX2 SIMD intrinsics can offer a speed boost on a Haswell CPU. I was wondering how much performance gain we can expect from it. In another word, what's the approximate speed increase if we run a simulat