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| author | Zhang, Jun <jun.zhang@intel.com> | 2023-09-22 23:56:37 +0800 |
|---|---|---|
| committer | liuhongt <hongtao.liu@intel.com> | 2023-10-12 12:47:17 +0800 |
| commit | e1e127de18dbee47b88fa0ce74a1c7f4d658dc68 (patch) | |
| tree | f0d8d505d9b76802e6068f9bb25f99b0383b2934 /libgomp/env.c | |
| parent | 6a3302a41a6bbae706a7b688c446fe60383322fc (diff) | |
| download | gcc-e1e127de18dbee47b88fa0ce74a1c7f4d658dc68.zip gcc-e1e127de18dbee47b88fa0ce74a1c7f4d658dc68.tar.gz gcc-e1e127de18dbee47b88fa0ce74a1c7f4d658dc68.tar.bz2 | |
x86: set spincount 1 for x86 hybrid platform
By test, we find in hybrid platform spincount 1 is better.
Use '-march=native -Ofast -funroll-loops -flto',
results as follows:
spec2017 speed RPL ADL
657.xz_s 0.00% 0.50%
603.bwaves_s 10.90% 26.20%
607.cactuBSSN_s 5.50% 72.50%
619.lbm_s 2.40% 2.50%
621.wrf_s -7.70% 2.40%
627.cam4_s 0.50% 0.70%
628.pop2_s 48.20% 153.00%
638.imagick_s -0.10% 0.20%
644.nab_s 2.30% 1.40%
649.fotonik3d_s 8.00% 13.80%
654.roms_s 1.20% 1.10%
Geomean-int 0.00% 0.50%
Geomean-fp 6.30% 21.10%
Geomean-all 5.70% 19.10%
omp2012 RPL ADL
350.md -1.81% -1.75%
351.bwaves 7.72% 12.50%
352.nab 14.63% 19.71%
357.bt331 -0.20% 1.77%
358.botsalgn 0.00% 0.00%
359.botsspar 0.00% 0.65%
360.ilbdc 0.00% 0.25%
362.fma3d 2.66% -0.51%
363.swim 10.44% 0.00%
367.imagick 0.00% 0.12%
370.mgrid331 2.49% 25.56%
371.applu331 1.06% 4.22%
372.smithwa 0.74% 3.34%
376.kdtree 10.67% 16.03%
GEOMEAN 3.34% 5.53%
include/ChangeLog:
PR target/109812
* spincount.h: New file.
libgomp/ChangeLog:
* env.c (initialize_env): Use do_adjust_default_spincount.
* config/linux/x86/spincount.h: New file.
Diffstat (limited to 'libgomp/env.c')
| -rw-r--r-- | libgomp/env.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/libgomp/env.c b/libgomp/env.c index a21adb3..d058043 100644 --- a/libgomp/env.c +++ b/libgomp/env.c @@ -61,6 +61,7 @@ #include "secure_getenv.h" #include "environ.h" +#include "spincount.h" /* Default values of ICVs according to the OpenMP standard, except for default-device-var. */ @@ -2431,7 +2432,10 @@ initialize_env (void) if (wait_policy > 0) gomp_spin_count_var = 30000000000LL; else if (wait_policy < 0) - gomp_spin_count_var = 300000LL; + { + gomp_spin_count_var = 300000LL; + do_adjust_default_spincount (); + } } /* gomp_throttled_spin_count_var is used when there are more libgomp managed threads than available CPUs. Use very short spinning. */ |