Commit Graph

4 Commits

Author SHA1 Message Date
Naveen Saini
423820afb6 intel-skylake-64: use tune-x86-64-v3.inc
tune-x86-64-v3.inc uses x86-64 v3 level of instruction set.
x86-64-v3: (close to Haswell) AVX, AVX2, BMI1, BMI2, F16C, FMA, LZCNT, MOVBE, XSAVE

Signed-off-by: Naveen Saini <naveen.kumar.saini@intel.com>
Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>
2023-01-04 10:55:28 +08:00
Anuj Mittal
e67676976b Manually move some overrides to new syntax
Some of these were missed when using the script and were noticed when
building intel-skylake-64 and tiny images  which had started failing.

Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>
2021-08-06 15:51:53 +08:00
Naveen Saini
04510bfabd conf: add new machine intel-skylake-64
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>
2019-08-21 12:30:01 +08:00
California Sullivan
9e417c71d0 recipes-kernel/linux: add meta-intel-compat-kernel.inc file
These are common settings for any meta-intel compatible kernel. It sets
things like COMPATIBLE_MACHINE, default module autoload settings, the
correct KMACHINE for the chosen MACHINE, and adds any KERNEL_FEATURES
that have been added to KERNEL_FEATURES_INTEL_COMMON.

Signed-off-by: California Sullivan <california.l.sullivan@intel.com>
2018-04-06 12:07:49 -07:00