Add the build for runtime dispatch for AVX, AVX2 instruction set (#26125)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/26125
We already had some optimization implementation using AVX2 for improve the quantized kernel performance. In this diff, we want to enable the runtime dispatch.
Test Plan:
Sandcastle build and test
Also test with a python binary calling into vectorized op.
torch.__config__.show()
PyTorch built with:
- GCC 4.2
- clang 8.0.20181009
- Intel(R) Math Kernel Library Version 2017.0.3 Product Build 20170413 for Intel(R) 64 architecture applications
- Intel(R) MKL-DNN v0.18.1 (Git Hash N/A)
- OpenMP 1
- **CPU capability usage: AVX2**
- Build settings:
Reviewed By: jamesr66a
Differential Revision: D17337251
fbshipit-source-id: 8e22d10011a12a4eaf54cea3485353eb1811d828
