GCC -O2 Regression

Intel Xeon Silver 4216 testing with a TYAN S7100AG2NR (V4.02 BIOS) and ASPEED on Debian 10 via the Phoronix Test Suite.

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Result
Identifier
Performance Per
Dollar
Date
Run
  Test
  Duration
GCC 11.0.0 20200727
July 27 2020
  26 Minutes
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GCC -O2 RegressionOpenBenchmarking.orgPhoronix Test SuiteIntel Xeon Silver 4216 @ 3.20GHz (16 Cores / 32 Threads)TYAN S7100AG2NR (V4.02 BIOS)Intel Sky Lake-E DMI3 Registers24GB240GB Corsair Force MP500ASPEEDRealtek ALC8922 x Intel I350Debian 104.19.0-9-amd64 (x86_64)GNOME Shell 3.30.2X ServerGCC 11.0.0 20200727ext41024x768ProcessorMotherboardChipsetMemoryDiskGraphicsAudioNetworkOSKernelDesktopDisplay ServerCompilerFile-SystemScreen ResolutionGCC -O2 Regression BenchmarksSystem Logs- CXXFLAGS=-O2 CFLAGS=-O2- --disable-multilib --enable-checking=release- Scaling Governor: intel_pstate powersave - CPU Microcode: 0x500002c- itlb_multihit: KVM: Mitigation of Split huge pages + l1tf: Not affected + mds: Not affected + meltdown: Not affected + spec_store_bypass: Mitigation of SSB disabled via prctl and seccomp + spectre_v1: Mitigation of usercopy/swapgs barriers and __user pointer sanitization + spectre_v2: Mitigation of Enhanced IBRS IBPB: conditional RSB filling + srbds: Not affected + tsx_async_abort: Mitigation of TSX disabled

GCC -O2 Regressionscimark2: Compositescimark2: Monte Carloscimark2: Fast Fourier Transformscimark2: Sparse Matrix Multiplyscimark2: Dense LU Matrix Factorizationscimark2: Jacobi Successive Over-Relaxationtscp: AI Chess Performancejohn-the-ripper: Blowfishjohn-the-ripper: MD5graphics-magick: Enhancedgraphics-magick: HWB Color Spacex265: H.265 1080p Video Encodingcoremark: CoreMark Size 666 - Iterations Per Secondhimeno: Poisson Pressure Solverstockfish: Total Timeencode-flac: WAV To FLACnginx: Static Web Page ServingGCC 11.0.0 202007271467.19674.65477.292278.142985.83920.06972419186791771333244124434.33413969.5486972861.8184253381452013.04635589.93OpenBenchmarking.org

SciMark

This test runs the ANSI C version of SciMark 2.0, which is a benchmark for scientific and numerical computing developed by programmers at the National Institute of Standards and Technology. This test is made up of Fast Foruier Transform, Jacobi Successive Over-relaxation, Monte Carlo, Sparse Matrix Multiply, and dense LU matrix factorization benchmarks. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: CompositeGCC 11.0.0 2020072730060090012001500SE +/- 0.76, N = 31467.191. (CC) gcc options: -O2 -lm

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Monte CarloGCC 11.0.0 20200727150300450600750SE +/- 0.77, N = 3674.651. (CC) gcc options: -O2 -lm

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Fast Fourier TransformGCC 11.0.0 20200727100200300400500SE +/- 0.54, N = 3477.291. (CC) gcc options: -O2 -lm

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Sparse Matrix MultiplyGCC 11.0.0 202007275001000150020002500SE +/- 0.22, N = 32278.141. (CC) gcc options: -O2 -lm

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Dense LU Matrix FactorizationGCC 11.0.0 202007276001200180024003000SE +/- 3.25, N = 32985.831. (CC) gcc options: -O2 -lm

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Jacobi Successive Over-RelaxationGCC 11.0.0 202007272004006008001000SE +/- 1.38, N = 3920.061. (CC) gcc options: -O2 -lm

TSCP

This is a performance test of TSCP, Tom Kerrigan's Simple Chess Program, which has a built-in performance benchmark. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgNodes Per Second, More Is BetterTSCP 1.81AI Chess PerformanceGCC 11.0.0 20200727200K400K600K800K1000KSE +/- 420.58, N = 59724191. (CC) gcc options: -O2 -O3 -march=native

John The Ripper

This is a benchmark of John The Ripper, which is a password cracker. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgReal C/S, More Is BetterJohn The Ripper 1.9.0-jumbo-1Test: BlowfishGCC 11.0.0 202007274K8K12K16K20KSE +/- 35.69, N = 3186791. (CC) gcc options: -m64 -lssl -lcrypto -fopenmp -lgmp -pthread -lm -lz -ldl -lcrypt -lbz2

OpenBenchmarking.orgReal C/S, More Is BetterJohn The Ripper 1.9.0-jumbo-1Test: MD5GCC 11.0.0 20200727400K800K1200K1600K2000KSE +/- 3179.80, N = 317713331. (CC) gcc options: -m64 -lssl -lcrypto -fopenmp -lgmp -pthread -lm -lz -ldl -lcrypt -lbz2

GraphicsMagick

This is a test of GraphicsMagick with its OpenMP implementation that performs various imaging tests on a sample 6000x4000 pixel JPEG image. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.33Operation: EnhancedGCC 11.0.0 20200727501001502002502441. (CC) gcc options: -fopenmp -O2 -pthread -ljbig -ltiff -lfreetype -ljpeg -lXext -lX11 -llzma -lbz2 -lxml2 -lz -lm -lpthread

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.33Operation: HWB Color SpaceGCC 11.0.0 2020072730060090012001500SE +/- 6.17, N = 312441. (CC) gcc options: -fopenmp -O2 -pthread -ljbig -ltiff -lfreetype -ljpeg -lXext -lX11 -llzma -lbz2 -lxml2 -lz -lm -lpthread

x265

This is a simple test of the x265 encoder run on the CPU with a sample 1080p video file. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgFrames Per Second, More Is Betterx265 3.1.2H.265 1080p Video EncodingGCC 11.0.0 20200727816243240SE +/- 0.19, N = 334.331. (CXX) g++ options: -O2 -O3 -rdynamic -lpthread -lrt -ldl -lnuma

Coremark

This is a test of EEMBC CoreMark processor benchmark. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgIterations/Sec, More Is BetterCoremark 1.0CoreMark Size 666 - Iterations Per SecondGCC 11.0.0 2020072790K180K270K360K450KSE +/- 2874.84, N = 3413969.551. (CC) gcc options: -O2 -lrt" -lrt

Himeno Benchmark

The Himeno benchmark is a linear solver of pressure Poisson using a point-Jacobi method. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgMFLOPS, More Is BetterHimeno Benchmark 3.0Poisson Pressure SolverGCC 11.0.0 202007276001200180024003000SE +/- 0.27, N = 32861.821. (CC) gcc options: -O3 -O2 -mavx2

Stockfish

This is a test of Stockfish, an advanced C++11 chess benchmark that can scale up to 128 CPU cores. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgNodes Per Second, More Is BetterStockfish 9Total TimeGCC 11.0.0 202007277M14M21M28M35MSE +/- 322219.29, N = 3338145201. (CXX) g++ options: -m64 -lpthread -O2 -fno-exceptions -std=c++11 -pedantic -O3 -msse -msse3 -mpopcnt -flto

FLAC Audio Encoding

This test times how long it takes to encode a sample WAV file to FLAC format five times. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgSeconds, Fewer Is BetterFLAC Audio Encoding 1.3.2WAV To FLACGCC 11.0.0 202007273691215SE +/- 0.07, N = 513.051. (CXX) g++ options: -O2 -fvisibility=hidden -lm

NGINX Benchmark

This is a test of ab, which is the Apache Benchmark program running against nginx. This test profile measures how many requests per second a given system can sustain when carrying out 2,000,000 requests with 500 requests being carried out concurrently. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgRequests Per Second, More Is BetterNGINX Benchmark 1.9.9Static Web Page ServingGCC 11.0.0 202007278K16K24K32K40KSE +/- 175.34, N = 335589.931. (CC) gcc options: -lpthread -lcrypt -lcrypto -lz -O3 -march=native -O2