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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
Byte Order: Little Endian
Address sizes: 48 bits physical, 48 bits virtual
CPU(s): 128
On-line CPU(s) list: 0-127
Thread(s) per core: 2
Core(s) per socket: 64
Socket(s): 1
NUMA node(s): 1
Vendor ID: AuthenticAMD
CPU family: 23
Model: 49
Model name: AMD EPYC 7702 64-Core Processor
Stepping: 0
Frequency boost: enabled
CPU MHz: 1497.211
CPU max MHz: 2000.0000
CPU min MHz: 1500.0000
BogoMIPS: 3992.84
Virtualization: AMD-V
L1d cache: 2 MiB
L1i cache: 2 MiB
L2 cache: 32 MiB
L3 cache: 256 MiB
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 and seccomp
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
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 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 umip rdpid overflow_recov succor smca
memory MemTotal: 263696144 kB
Run Info

Fields

NameValue

Parameters

NameValue
as GNU assembler (GNU Binutils; openSUSE Tumbleweed) 2.32.0.20190909-8
Copyright (C) 2019 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 20200515 (experimental) cda6396a1b6e6bba2a3b0847931567c3458f2184
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 cda6396a1b6e6bba2a3b0847931567c3458f2184
glibc GNU C Library (GNU libc) stable release version 2.30 (git 0a8262a1b2).
Copyright (C) 2019 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 9.2.1 20190903 [gcc-9-branch revision 275330].
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) 2.32.0.20190909-8
options None
reason None
uname Linux benzen 5.3.6-1-default #1 SMP Sun Oct 13 07:19:36 UTC 2019 (519ea7b) x86_64 x86_64 x86_64 GNU/Linux
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benzen.gcc-trunk.Ofast test results

Run Order Start Time Duration
Current 1589566017000.cda6396a1b6e6bba2a3b0847931567c3458f2184 2020-05-15T21:45:16.120288 0:01:28.726339
Previous 1589415382000.f806a768e1400ec1115c3a52b1e207bb71b4ad45 2020-05-14T07:28:58.322937 0:01:31.136661
Baseline 1572221826000.75b6f9367845fc92fd4ebbc8d7b9156e044a9fc8 2019-10-28T07:00:49.454426 0:01:29.472364

Tests Summary

Status Group # # (B)
Performance Regressions 4 7
Performance Improvements 5 12
Added Tests 3 3
Unchanged Tests 258 248
Total Tests 270

Run-Over-Run Changes Detail

Performance Regressions - compile_time Δ Previous Current σ Δ (B) σ (B)
random/pr12850.cpp 5.71% 39.542 41.798 - 1.60% -

Performance Regressions - mem_bytes Δ Previous Current σ Δ (B) σ (B)
random/pr70614.c 4.71% 60.28 MB 63.12 MB - 1.08% -
random/pr26854-2.c 2.14% 1.38 GB 1.41 GB - -2.88% -
random/pr36498.cpp 2.11% 347.16 MB 354.49 MB - -0.85% -

Performance Improvements - compile_time Δ Previous Current σ Δ (B) σ (B)
random/pr36439.cpp -6.02% 35.441 33.307 - 0.44% -
random/pr26854-2.c -5.81% 59.221 55.782 - -2.17% -
random/pr36291.cpp -3.08% 29.899 28.977 - -3.35% -
random/pr39326.c -2.01% 104.747 102.644 - -1.92% -

Performance Improvements - size Δ Previous Current σ Δ (B) σ (B)
random/pr26854-2.c/elf/sections/text -2.87% 328.15 KB 318.74 KB - -1.53% -

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 7.91% 68.825 74.271 - 0.32% -
random/pr36262.c 4.34% 33.635 35.096 - -0.34% -
random/pr38518.c 2.78% 33.910 34.853 - 0.33% -
random/pr70614.c 2.45% 1.435 1.470 - -0.59% -

Performance Regressions - mem_bytes Δ (B) Baseline Current σ (B) Δ σ
random/empty.C 6.44% 17.34 MB 18.46 MB - 1.37% -
random/empty.c 2.89% 16.24 MB 16.71 MB - 1.95% -
random/pr12850.cpp 2.27% 569.88 MB 582.83 MB - -0.05% -

Performance Improvements - compile_time Δ (B) Baseline Current σ (B) Δ σ
random/pr60243.c -28.30% 117.203 84.039 - 0.13% -
random/pr29433.cpp -19.33% 3.947 3.184 - -0.33% -
random/pr12392.cpp -5.46% 38.857 36.736 - -0.11% -
random/pr36498.cpp -4.21% 16.283 15.597 - -0.76% -
random/pr36291.cpp -3.35% 29.982 28.977 - -3.08% -
random/pr26854-2.c -2.17% 57.018 55.782 - -5.81% -

Performance Improvements - mem_bytes Δ (B) Baseline Current σ (B) Δ σ
random/pr12392.cpp -8.35% 908.87 MB 833.01 MB - 0.05% -
random/pr28071.c -6.57% 1.32 GB 1.23 GB - 0.11% -
random/pr60243.c -3.34% 2.10 GB 2.03 GB - 0.03% -
random/pr26854-2.c -2.88% 1.45 GB 1.41 GB - 2.14% -
random/pr36262.c -2.33% 2.88 GB 2.81 GB - 0.01% -
random/pr38518.c -2.21% 2.88 GB 2.81 GB - 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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