floraachy/OpenBLAS
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Initial support for SkylakeX / AVX512

Browse Source 
This patch adds the basic infrastructure for adding the SkylakeX (Intel Skylake server)
target. The SkylakeX target will use the AVX512 (AVX512VL level) instruction set,
which brings 2 basic things:
1) 512 bit wide SIMD (2x width of AVX2)
2) 32 SIMD registers (2x the number on AVX2)

This initial patch only contains a trivial transofrmation of the Haswell SGEMM kernel
to AVX512VL; more will follow later but this patch aims to get the infrastructure
in place for this "later".

Full performance tuning has not been done yet; with more registers and wider SIMD
it's in theory possible to retune the kernels but even without that there's an
interesting enough performance increase (30-40% range) with just this change.
This commit is contained in:
Arjan van de Ven
2018-06-03 07:24:29 +00:00
parent 36c4523d85
commit 99c7bba8e4
57 changed files with 7034 additions and 47 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
kernel/x86_64/saxpy.c
View File

@@ -31,7 +31,7 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#if defined(NEHALEM)
#include "saxpy_microk_nehalem-2.c"
#elif defined(HASWELL) || defined(ZEN)
#elif defined(HASWELL) || defined(ZEN) || defined (SKYLAKEX)
#include "saxpy_microk_haswell-2.c"
#elif defined(SANDYBRIDGE)
#include "saxpy_microk_sandy-2.c"