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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) 2.35.1.20201112-1
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) 8.4.1 20210418 9a37e78d854a90c43685ca06870d86e36f8fa4b4
Copyright (C) 2018 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 9a37e78d854a90c43685ca06870d86e36f8fa4b4
glibc GNU C Library (GNU libc) release release version 2.32 (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 10.2.1 20201202 [revision e563687cf9d3d1278f45aaebd03e0f66531076c9].
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) 2.35.1.20201112-1
options None
reason None
uname Linux benzen 5.10.7-1-default #1 SMP Wed Jan 13 06:08:43 UTC 2021 (1c33a89) x86_64 x86_64 x86_64 GNU/Linux
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benzen.gcc-8.O_g test results

Run Order Start Time Duration
Current 1618705079000.9a37e78d854a90c43685ca06870d86e36f8fa4b4 2021-04-19T02:14:22.396206 0:01:28.668626
Previous 1598487458000.7edec20c8f9a97b3c036158212b76211b7fe42df 2020-08-27T20:54:33.951837 0:01:25.655671
Baseline 1578183366000.7daeb907afcd409b116b388a2c2cfba005f5623c 2020-01-05T03:02:54.069530 0:01:25.626977

Tests Summary

Status Group # # (B)
Performance Regressions 4 2
Performance Improvements 6 6
Added Tests 3 3
Unchanged Tests 275 277
Total Tests 288

Run-Over-Run Changes Detail

Performance Regressions - compile_time Δ Previous Current σ Δ (B) σ (B)
random/pr12392.cpp 5.11% 45.560 47.888 - 2.96% -
random/pr69609.c 2.76% 41.552 42.700 - -1.95% -
random/pr36439.cpp 2.49% 23.400 23.983 - 0.82% -
random/pr12850.cpp 2.03% 43.783 44.670 - 1.82% -

Performance Improvements - compile_time Δ Previous Current σ Δ (B) σ (B)
random/pr70614.c -42.56% 1.092 0.627 - -42.84% -
random/pr26854-2.c -20.68% 18.787 14.902 - -24.13% -
random/pr38518.c -9.69% 9.578 8.650 - -11.71% -
random/pr36291.cpp -5.24% 20.013 18.963 - -10.04% -
random/pr29433.cpp -4.51% 14.959 14.284 - -6.25% -
random/pr39326.c -4.41% 130.854 125.090 - -1.29% -

Added Tests - size
random/empty.C/elf/sections/text
random/empty.c/elf/sections/text
random/pr36439.cpp/elf/sections/text

Run-Over-Baseline Changes Detail

Performance Regressions - compile_time Δ (B) Baseline Current σ (B) Δ σ
random/pr12392.cpp 2.96% 46.510 47.888 - 5.11% -

Performance Regressions - mem_bytes Δ (B) Baseline Current σ (B) Δ σ
random/empty.C 3.31% 17.13 MB 17.70 MB - 0.71% -

Performance Improvements - compile_time Δ (B) Baseline Current σ (B) Δ σ
random/pr70614.c -42.84% 1.097 0.627 - -42.56% -
random/pr26854-2.c -24.13% 19.642 14.902 - -20.68% -
random/pr38518.c -11.71% 9.797 8.650 - -9.69% -
random/pr36262.c -11.44% 9.727 8.614 - -0.23% -
random/pr36291.cpp -10.04% 21.080 18.963 - -5.24% -
random/pr29433.cpp -6.25% 15.236 14.284 - -4.51% -

Added Tests - size
random/empty.C/elf/sections/text
random/empty.c/elf/sections/text
random/pr36439.cpp/elf/sections/text

Report Time: 0.08s