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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) 2.35.1.20201112-1
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) 11.0.0 20210129 (experimental) 91a95ad2ae0e0f2fa953fafe55ff2ec32c8277d5
Copyright (C) 2021 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 91a95ad2ae0e0f2fa953fafe55ff2ec32c8277d5
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-trunk.Ofast test results

Run Order Start Time Duration
Current 1611941699000.91a95ad2ae0e0f2fa953fafe55ff2ec32c8277d5 2021-01-29T20:45:11.555603 0:01:36.301615
Previous 1611894575000.f8f5388c9e94d4324c31d82b335fa138518e3171 2021-01-29T09:50:33.692356 0:01:35.704919
Baseline 1572221826000.75b6f9367845fc92fd4ebbc8d7b9156e044a9fc8 2019-10-28T07:00:49.454426 0:01:29.472364

Tests Summary

Status Group # # (B)
Performance Regressions 0 17
Performance Improvements 7 19
Added Tests 3 3
Unchanged Tests 260 231
Total Tests 270

Run-Over-Run Changes Detail

Performance Improvements - compile_time Δ Previous Current σ Δ (B) σ (B)
random/pr12392.cpp -38.73% 58.805 36.032 - -7.27% -
random/pr36262.c -4.36% 34.214 32.722 - -2.71% -
random/pr38518.c -3.96% 34.071 32.721 - -3.51% -

Performance Improvements - mem_bytes Δ Previous Current σ Δ (B) σ (B)
random/pr36262.c -60.20% 2.94 GB 1.17 GB - -59.36% -
random/pr38518.c -60.17% 2.94 GB 1.17 GB - -59.28% -
random/pr26854-2.c -24.16% 1.46 GB 1.11 GB - -23.53% -
random/pr12392.cpp -9.91% 878.44 MB 791.38 MB - -12.93% -

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 117.37% 68.825 149.603 - 0.59% -
random/pr36439.cpp 7.58% 33.160 35.674 - -0.23% -
random/pr12850.cpp 2.67% 41.140 42.238 - -0.13% -

Performance Regressions - mem_bytes Δ (B) Baseline Current σ (B) Δ σ
random/pr39326.c 128.08% 575.34 MB 1.28 GB - 0.10% -
random/pr28071.c 98.44% 1.32 GB 2.61 GB - 0.00% -
random/pr29433.cpp 13.50% 330.88 MB 375.55 MB - -0.11% -
random/empty.C 8.69% 17.34 MB 18.85 MB - 0.00% -
random/empty.c 6.01% 16.24 MB 17.21 MB - 0.00% -
random/pr12850.cpp 4.66% 569.88 MB 596.46 MB - 0.20% -
random/pr36291.cpp 4.38% 480.34 MB 501.38 MB - 0.00% -

Performance Regressions - size Δ (B) Baseline Current σ (B) Δ σ
random/pr12850.cpp/elf/sections/text 43.90% 91.26 KB 131.32 KB - 0.00% -
random/pr36262.c/elf 7.40% 511.09 KB 548.92 KB - 0.04% -
random/pr38518.c/elf 7.40% 511.09 KB 548.92 KB - 0.04% -
random/pr26854-2.c/elf/sections/text 7.17% 323.69 KB 346.90 KB - 0.00% -
random/pr36262.c/elf/sections/text 7.14% 489.02 KB 523.94 KB - 0.05% -
random/pr38518.c/elf/sections/text 7.14% 489.02 KB 523.94 KB - 0.05% -
random/pr36439.cpp/elf/sections/text 5.14% 123.36 KB 129.70 KB - 0.00% -

Performance Improvements - compile_time Δ (B) Baseline Current σ (B) Δ σ
random/pr70614.c -43.79% 1.435 0.806 - -0.53% -
random/pr60243.c -16.72% 117.203 97.609 - -0.38% -
random/pr29433.cpp -14.42% 3.947 3.377 - -0.79% -
random/pr26854-2.c -8.78% 57.018 52.013 - -1.79% -
random/pr12392.cpp -7.27% 38.857 36.032 - -38.73% -
random/pr39326.c -6.81% 104.650 97.525 - -1.03% -
random/pr38518.c -3.51% 33.910 32.721 - -3.96% -
random/pr36291.cpp -3.15% 29.982 29.038 - -0.32% -
random/pr36262.c -2.71% 33.635 32.722 - -4.36% -

Performance Improvements - mem_bytes Δ (B) Baseline Current σ (B) Δ σ
random/pr36262.c -59.36% 2.88 GB 1.17 GB - -60.20% -
random/pr38518.c -59.28% 2.88 GB 1.17 GB - -60.17% -
random/pr26854-2.c -23.53% 1.45 GB 1.11 GB - -24.16% -
random/pr12392.cpp -12.93% 908.87 MB 791.38 MB - -9.91% -
random/pr60243.c -7.42% 2.10 GB 1.94 GB - 0.00% -

Performance Improvements - size Δ (B) Baseline Current σ (B) Δ σ
random/pr39326.c/elf -28.26% 964.91 KB 692.19 KB - 0.00% -
random/pr39326.c/elf/sections/text -8.90% 339.86 KB 309.61 KB - 0.00% -
random/pr28071.c/elf/sections/text -4.26% 810.08 KB 775.57 KB - 0.00% -
random/pr28071.c/elf -2.89% 1.28 MB 1.24 MB - 0.00% -
random/pr12392.cpp/elf/sections/text -2.03% 411.00 KB 402.65 KB - 0.00% -

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
mem_bytes (bytes)
Name Current %
random/empty.C 18.85 MB -
random/empty.c 17.21 MB -
random/pr12392.cpp 791.38 MB -9.91%
random/pr12850.cpp 596.46 MB -
random/pr26854-2.c 1.11 GB -24.16%
random/pr28071.c 2.61 GB -
random/pr29433.cpp 375.55 MB -
random/pr36262.c 1.17 GB -60.20%
random/pr36291.cpp 501.38 MB -
random/pr36439.cpp 449.77 MB -
random/pr38518.c 1.17 GB -60.17%
random/pr39326.c 1.28 GB -
random/pr60243.c 1.94 GB -
random/pr70614.c 61.52 MB -
Geometric Mean 436.38 MB -14.72%