Add 64-bit new machine (intel-skylake-64) with -march=skylake
and avx2 instruction-set set up.
We do see a qemu-usermode failure at build time, on setup of
avx2 instruction-set as QEMU does not support AVX instruction
set.
Check this:
https://bugs.launchpad.net/qemu/+bug/1818075
So to bypass this issue disabling qemu-usermode for intel-skylake-64
machine.
Due to above limitation and in order to not affecting existing
machines, this new machine is being proposed to add.
A quick performance comparision between intel-corei7-64 vs intel-skylake-64 machines
Measurements are in time, taken by the benchmark tests. Less is better.
Test/Benchmark intel-corei7-64 intel-skylake-64
(1) CppPerformanceBenchmarks (Test: Math Library)
(1st) 5m 15.70s 4m 36.39s
(2nd) 5m 16.37s 4m 36.51s
(3rd) 5m 15.54s 4m 37.80s
CppPerformanceBenchmarks is a set of C++ compiler performance benchmarks.
(2) AOBench
(1st) 0m 35.07s 0m 28.74s
(2nd) 0m 34.90s 0m 28.72s
(3rd) 0m 34.85s 0m 28.89s
AOBench is a lightweight ambient occlusion renderer, written in C. The
test profile is using a size of 2048 x 2048.
(3) C-Ray
(1st) 320 seconds 232 seconds
(2nd) 320 seconds 232 seconds
(3rd) 321 seconds 232 seconds
C-Ray, a simple raytracer designed to test the floating-point CPU performance.
For this patch, 'bitbake world' gets successfully built with latest poky master.
Signed-off-by: Naveen Saini <naveen.kumar.saini@intel.com>
Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>
