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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: 1496.816
CPU max MHz: 2000.0000
CPU min MHz: 1500.0000
BogoMIPS: 3992.68
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: 263695408 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 20201208 (experimental) e844c04e35ca2fe9ee2f758a720dd37cbe81e7ef
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 e844c04e35ca2fe9ee2f758a720dd37cbe81e7ef
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 1607417059000.e844c04e35ca2fe9ee2f758a720dd37cbe81e7ef 2020-12-08T11:28:26.641344 0:01:35.291189
Previous 1607300182000.0e49145550fe1284dc56e8e02ba1720c4f737a74 2020-12-07T04:31:00.835063 0:01:35.517904
Baseline 1572221826000.75b6f9367845fc92fd4ebbc8d7b9156e044a9fc8 2019-10-28T07:00:49.454426 0:01:29.472364

Tests Summary

Status Group # # (B)
Performance Regressions 2 14
Performance Improvements 1 11
Added Tests 3 3
Unchanged Tests 264 242
Total Tests 270

Run-Over-Run Changes Detail

Performance Regressions - size Δ Previous Current σ Δ (B) σ (B)
random/pr12850.cpp/elf/sections/text 103.13% 64.79 KB 131.60 KB - 44.21% -
random/pr12850.cpp/elf 3.00% 3.37 MB 3.47 MB - 0.68% -

Performance Improvements - compile_time Δ Previous Current σ Δ (B) σ (B)
random/pr26854-2.c -4.44% 54.576 52.155 - -8.53% -

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/pr12392.cpp 52.37% 38.857 59.206 - -1.51% -
random/pr36439.cpp 7.71% 33.160 35.718 - 0.04% -
random/pr12850.cpp 2.91% 41.140 42.338 - 1.26% -

Performance Regressions - mem_bytes Δ (B) Baseline Current σ (B) Δ σ
random/pr39326.c 142.26% 575.34 MB 1.36 GB - 0.02% -
random/pr29433.cpp 13.27% 330.88 MB 374.79 MB - 0.25% -
random/pr12392.cpp 12.87% 908.87 MB 1.00 GB - -0.01% -
random/empty.C 6.69% 17.34 MB 18.50 MB - -1.00% -
random/empty.c 6.23% 16.24 MB 17.25 MB - -1.08% -
random/pr12850.cpp 4.24% 569.88 MB 594.06 MB - 0.55% -
random/pr36291.cpp 3.55% 480.34 MB 497.39 MB - 0.10% -

Performance Regressions - size Δ (B) Baseline Current σ (B) Δ σ
random/pr12850.cpp/elf/sections/text 44.21% 91.26 KB 131.60 KB - 103.13% -
random/pr26854-2.c/elf/sections/text 18.70% 323.69 KB 384.22 KB - 0.00% -
random/pr36439.cpp/elf/sections/text 5.05% 123.36 KB 129.59 KB - 0.00% -
random/pr26854-2.c/elf 4.88% 975.05 KB 1022.68 KB - 0.00% -

Performance Improvements - compile_time Δ (B) Baseline Current σ (B) Δ σ
random/pr70614.c -43.51% 1.435 0.811 - -2.18% -
random/pr39326.c -32.55% 104.650 70.589 - -1.02% -
random/pr60243.c -16.62% 117.203 97.726 - -0.51% -
random/pr29433.cpp -14.10% 3.947 3.390 - 0.12% -
random/pr26854-2.c -8.53% 57.018 52.155 - -4.44% -
random/pr36291.cpp -2.64% 29.982 29.190 - 0.05% -

Performance Improvements - mem_bytes Δ (B) Baseline Current σ (B) Δ σ
random/pr26854-2.c -19.58% 1.45 GB 1.17 GB - -0.04% -
random/pr60243.c -7.75% 2.10 GB 1.94 GB - 0.01% -

Performance Improvements - size Δ (B) Baseline Current σ (B) Δ σ
random/pr39326.c/elf -25.44% 964.91 KB 719.43 KB - 0.00% -
random/pr39326.c/elf/sections/text -8.46% 339.86 KB 311.11 KB - 0.00% -
random/pr12392.cpp/elf/sections/text -2.10% 411.00 KB 402.37 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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