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Machine Info

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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: 3992.35
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 Mmio stale data: Not affected
Vulnerability Retbleed: Mitigation; untrained return thunk; SMT enabled with STIBP protection
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; Retpolines, IBPB conditional, STIBP always-on, RSB filling, PBRSB-eIBRS Not affected
Vulnerability Srbds: Not affected
Vulnerability Tsx async abort: Not affected
memory MemTotal: 263696376 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 20200902 (experimental) e1a4a8a03f700744c59e5b5e562fee0c33859c2c
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 e1a4a8a03f700744c59e5b5e562fee0c33859c2c
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 1599005785000.e1a4a8a03f700744c59e5b5e562fee0c33859c2c 2020-09-02T08:10:52.553733 0:01:31.874926
Previous 1598082381000.fc34d04b075244e2ff4ca66079e2128c0cde026c 2020-08-22T15:49:32.026657 0:01:32.664524
Baseline 1572221826000.75b6f9367845fc92fd4ebbc8d7b9156e044a9fc8 2019-10-28T07:00:49.454426 0:01:29.472364

Tests Summary

Status Group # # (B)
Performance Regressions 3 8
Performance Improvements 5 15
Added Tests 3 3
Unchanged Tests 259 244
Total Tests 270

Run-Over-Run Changes Detail

Performance Regressions - compile_time Δ Previous Current σ Δ (B) σ (B)
random/pr36262.c 6.16% 31.419 33.355 - -0.83% -
random/pr36291.cpp 3.42% 28.407 29.377 - -2.02% -

Performance Regressions - mem_bytes Δ Previous Current σ Δ (B) σ (B)
random/pr39326.c 85.67% 590.70 MB 1.07 GB - 90.62% -

Performance Improvements - compile_time Δ Previous Current σ Δ (B) σ (B)
random/pr39326.c -2.52% 108.643 105.909 - 1.20% -

Performance Improvements - mem_bytes Δ Previous Current σ Δ (B) σ (B)
random/empty.C -3.05% 18.44 MB 17.88 MB - 3.06% -
random/pr70614.c -2.75% 61.48 MB 59.79 MB - -4.26% -

Performance Improvements - size Δ Previous Current σ Δ (B) σ (B)
random/pr39326.c/elf -17.15% 962.27 KB 797.25 KB - -17.38% -
random/pr39326.c/elf/sections/text -6.49% 340.58 KB 318.49 KB - -6.29% -

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/pr29433.cpp 6.11% 3.947 4.188 - 0.18% -
random/pr28071.c 5.28% 68.825 72.459 - 0.18% -

Performance Regressions - mem_bytes Δ (B) Baseline Current σ (B) Δ σ
random/pr39326.c 90.62% 575.34 MB 1.07 GB - 85.67% -
random/pr29433.cpp 14.00% 330.88 MB 377.22 MB - -0.00% -
random/empty.c 4.23% 16.24 MB 16.93 MB - 0.72% -
random/pr12850.cpp 4.09% 569.88 MB 593.20 MB - 0.12% -
random/pr36291.cpp 3.78% 480.34 MB 498.50 MB - -0.02% -
random/empty.C 3.06% 17.34 MB 17.88 MB - -3.05% -

Performance Improvements - compile_time Δ (B) Baseline Current σ (B) Δ σ
random/pr60243.c -28.42% 117.203 83.898 - 0.12% -
random/pr12392.cpp -8.86% 38.857 35.414 - -0.78% -
random/pr26854-2.c -8.21% 57.018 52.336 - 0.33% -
random/pr36498.cpp -4.02% 16.283 15.629 - 0.16% -
random/pr12850.cpp -3.27% 41.140 39.796 - 0.03% -
random/pr70614.c -3.02% 1.435 1.392 - -0.04% -
random/pr36291.cpp -2.02% 29.982 29.377 - 3.42% -

Performance Improvements - mem_bytes Δ (B) Baseline Current σ (B) Δ σ
random/pr12392.cpp -8.22% 908.87 MB 834.21 MB - -0.07% -
random/pr28071.c -6.52% 1.32 GB 1.23 GB - -0.01% -
random/pr60243.c -4.87% 2.10 GB 2.00 GB - -1.51% -
random/pr70614.c -4.26% 62.45 MB 59.79 MB - -2.75% -
random/pr26854-2.c -3.07% 1.45 GB 1.41 GB - -0.02% -

Performance Improvements - size Δ (B) Baseline Current σ (B) Δ σ
random/pr39326.c/elf -17.38% 964.91 KB 797.25 KB - -17.15% -
random/pr39326.c/elf/sections/text -6.29% 339.86 KB 318.49 KB - -6.49% -
random/pr12392.cpp/elf/sections/text -2.06% 411.00 KB 402.54 KB - -0.02% -

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

Report Time: 0.15s