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Machine Info

Fields

hardware None
os_version None

Parameters

cpu Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Address sizes: 48 bits physical, 48 bits virtual
Byte Order: Little Endian
CPU(s): 128
On-line CPU(s) list: 0-127
Vendor ID: AuthenticAMD
Model name: AMD EPYC 7702 64-Core Processor
CPU family: 23
Model: 49
Thread(s) per core: 2
Core(s) per socket: 64
Socket(s): 1
Stepping: 0
Frequency boost: enabled
CPU max MHz: 2000.0000
CPU min MHz: 1500.0000
BogoMIPS: 3992.40
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid aperfmperf rapl pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb cat_l3 cdp_l3 hw_pstate ssbd mba ibrs ibpb stibp vmmcall fsgsbase bmi1 avx2 smep bmi2 cqm rdt_a rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local clzero irperf xsaveerptr rdpru wbnoinvd amd_ppin arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic v_vmsave_vmload vgif v_spec_ctrl umip rdpid overflow_recov succor smca
Virtualization: AMD-V
L1d cache: 2 MiB (64 instances)
L1i cache: 2 MiB (64 instances)
L2 cache: 32 MiB (64 instances)
L3 cache: 256 MiB (16 instances)
NUMA node(s): 1
NUMA node0 CPU(s): 0-127
Vulnerability Itlb multihit: Not affected
Vulnerability L1tf: Not affected
Vulnerability Mds: Not affected
Vulnerability Meltdown: Not affected
Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl
Vulnerability Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization
Vulnerability Spectre v2: Mitigation; Full AMD retpoline, IBPB conditional, IBRS_FW, STIBP conditional, RSB filling
Vulnerability Srbds: Not affected
Vulnerability Tsx async abort: Not affected
memory MemTotal: 263689112 kB
Run Info

Fields

NameValue

Parameters

NameValue
as GNU assembler (GNU Binutils; openSUSE Tumbleweed) 2.34.0.20200325-1
Copyright (C) 2020 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or later.
This program has absolutely no warranty.
This assembler was configured for a target of `x86_64-suse-linux'.
gcc gcc (GCC) 11.0.0 20200905 (experimental) bec05c98b94f22e70187b2d0e0c9ea6d51865aef
Copyright (C) 2020 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
git_revision bec05c98b94f22e70187b2d0e0c9ea6d51865aef
glibc GNU C Library (GNU libc) stable release version 2.31 (git 0a8262a1b2).
Copyright (C) 2020 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
Configured for x86_64-suse-linux.
Compiled by GNU CC version 10.1.1 20200625 [revision c91e43e9363bd119a695d64505f96539fa451bf2].
libc ABIs: UNIQUE IFUNC ABSOLUTE
For bug reporting instructions, please see:
<http://bugs.opensuse.org>.
glibc_location /lib64/libc.so.6
ld GNU ld (GNU Binutils; openSUSE Tumbleweed) 2.34.0.20200325-1
options None
reason None
uname Linux benzen 5.7.9-1-default #1 SMP Thu Jul 16 09:40:08 UTC 2020 (a010166) x86_64 x86_64 x86_64 GNU/Linux
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benzen.gcc-trunk.Ofast test results

Run Order Start Time Duration
Current 1599264980000.bec05c98b94f22e70187b2d0e0c9ea6d51865aef 2020-09-05T08:37:43.460463 0:01:32.837933
Previous 1599242192000.f923c40f9baba19e58f65afa7e5572f08cee93ff 2020-09-04T21:47:43.061940 0:01:29.407001
Baseline 1572221826000.75b6f9367845fc92fd4ebbc8d7b9156e044a9fc8 2019-10-28T07:00:49.454426 0:01:29.472364

Tests Summary

Status Group # # (B)
Performance Regressions 2 9
Performance Improvements 1 13
Added Tests 3 3
Unchanged Tests 264 245
Total Tests 270

Run-Over-Run Changes Detail

Performance Regressions - compile_time Δ Previous Current σ Δ (B) σ (B)
random/pr36439.cpp 3.43% 33.442 34.591 - 4.31% -
random/pr12392.cpp 2.88% 35.589 36.612 - -5.78% -

Performance Improvements - compile_time Δ Previous Current σ Δ (B) σ (B)
random/pr29433.cpp -2.26% 4.186 4.091 - 3.66% -

Added Tests - size
random/empty.C/elf/sections/text
random/empty.c/elf/sections/text
random/pr29433.cpp/elf/sections/text

Run-Over-Baseline Changes Detail

Performance Regressions - compile_time Δ (B) Baseline Current σ (B) Δ σ
random/pr28071.c 7.33% 68.825 73.872 - 0.62% -
random/pr36439.cpp 4.31% 33.160 34.591 - 3.43% -
random/pr29433.cpp 3.66% 3.947 4.091 - -2.26% -

Performance Regressions - mem_bytes Δ (B) Baseline Current σ (B) Δ σ
random/pr39326.c 90.65% 575.34 MB 1.07 GB - 0.01% -
random/pr29433.cpp 14.00% 330.88 MB 377.20 MB - 0.00% -
random/empty.C 4.84% 17.34 MB 18.18 MB - 0.00% -
random/empty.c 4.69% 16.24 MB 17.00 MB - 0.00% -
random/pr36291.cpp 4.21% 480.34 MB 500.56 MB - 0.04% -
random/pr12850.cpp 4.05% 569.88 MB 592.97 MB - 0.00% -

Performance Improvements - compile_time Δ (B) Baseline Current σ (B) Δ σ
random/pr60243.c -27.16% 117.203 85.376 - 1.25% -
random/pr26854-2.c -7.62% 57.018 52.675 - 0.44% -
random/pr12392.cpp -5.78% 38.857 36.612 - 2.88% -
random/pr36291.cpp -4.81% 29.982 28.539 - -1.47% -
random/pr12850.cpp -3.58% 41.140 39.667 - -0.57% -
random/pr70614.c -2.69% 1.435 1.396 - -0.35% -

Performance Improvements - mem_bytes Δ (B) Baseline Current σ (B) Δ σ
random/pr12392.cpp -8.25% 908.87 MB 833.91 MB - 0.03% -
random/pr28071.c -6.53% 1.32 GB 1.23 GB - 0.00% -
random/pr60243.c -4.86% 2.10 GB 2.00 GB - 0.00% -
random/pr26854-2.c -3.07% 1.45 GB 1.40 GB - -0.00% -

Performance Improvements - size Δ (B) Baseline Current σ (B) Δ σ
random/pr39326.c/elf -17.38% 964.91 KB 797.25 KB - 0.00% -
random/pr39326.c/elf/sections/text -6.29% 339.86 KB 318.49 KB - 0.00% -
random/pr12392.cpp/elf/sections/text -2.06% 411.00 KB 402.54 KB - 0.00% -

Added Tests - size
random/empty.C/elf/sections/text
random/empty.c/elf/sections/text
random/pr29433.cpp/elf/sections/text

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