GCC8 C-ray regression

C-ray Performance regression on Cortex-A53

Compare your own system(s) to this result file with the Phoronix Test Suite by running the command: phoronix-test-suite benchmark 1704298-RI-CRAYREGRE13
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GCC 7.1 baseline
April 29 2017
 
GCC 8
April 29 2017
 
GCC 8 A57
April 29 2017
 
GCC 8 basic flags
April 29 2017
 
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GCC 7.1 baseline

Processor: Unknown @ 1.54GHz (4 Cores), Motherboard: Amlogic, Memory: 2048MB, Disk: 16GB NCard + 32GB 00000, Graphics: OSD

OS: Ubuntu 16.04, Kernel: 3.14.79-vegas95 (aarch64), Compiler: GCC 7.0.1 20170414 + Clang 3.8.0-2ubuntu4 + LLVM 3.8.0, File-System: ext4, Screen Resolution: 1280x1440

Compiler Notes: --build=aarch64-linux-gnu --disable-bootstrap --disable-browser-plugin --disable-libquadmath --disable-werror --enable-checking=release --enable-clocale=gnu --enable-gnu-unique-object --enable-languages=c,c++,fortran --enable-libstdcxx-time=yes --enable-multiarch --enable-nls --enable-plugin --enable-shared --enable-threads=posix --host=aarch64-linux-gnu --target=aarch64-linux-gnu --with-arch-directory=aarch64 --with-default-libstdcxx-abi=new
Processor Notes: Scaling Governor: meson_cpufreq performance

GCC 8

Compiler Notes: --build=aarch64-linux-gnu --build=aarch64-linux-gnu --disable-bootstrap --disable-bootstrap --disable-browser-plugin --disable-browser-plugin --disable-libquadmath --disable-libquadmath --disable-werror --disable-werror --enable-checking=release --enable-checking=release --enable-clocale=gnu --enable-clocale=gnu --enable-fix-cortex-a53-843419 --enable-fix-cortex-a53-843419 --enable-gnu-unique-object --enable-gnu-unique-object --enable-languages=c,c++,fortran --enable-languages=c,c++,fortran --enable-libstdcxx-time=yes --enable-libstdcxx-time=yes --enable-multiarch --enable-multiarch --enable-nls --enable-nls --enable-plugin --enable-plugin --enable-shared --enable-shared --enable-threads=posix --enable-threads=posix --host=aarch64-linux-gnu --host=aarch64-linux-gnu --target=aarch64-linux-gnu --target=aarch64-linux-gnu --with-arch-directory=aarch64 --with-arch-directory=aarch64 --with-default-libstdcxx-abi=new --with-default-libstdcxx-abi=new
Processor Notes: Scaling Governor: meson_cpufreq performance

GCC 8 A57

GCC 8 basic flags

OS: Ubuntu 16.04, Kernel: 3.14.79-vegas95 (aarch64), Compiler: GCC 8.0.0 20170429 + Clang 3.8.0-2ubuntu4 + LLVM 3.8.0, File-System: ext4, Screen Resolution: 1280x1440

GCC8 C-ray regressionOpenBenchmarking.orgPhoronix Test SuiteUnknown @ 1.54GHz (4 Cores)Amlogic2048MB16GB NCard + 32GB 00000OSDUbuntu 16.043.14.79-vegas95 (aarch64)GCC 7.0.1 20170414 + Clang 3.8.0-2ubuntu4 + LLVM 3.8.0GCC 8.0.0 20170429 + Clang 3.8.0-2ubuntu4 + LLVM 3.8.0ext41280x1440ProcessorMotherboardMemoryDiskGraphicsOSKernelCompilersFile-SystemScreen ResolutionGCC8 C-ray Regression BenchmarksSystem Logs- GCC 7.1 baseline: --build=aarch64-linux-gnu --disable-bootstrap --disable-browser-plugin --disable-libquadmath --disable-werror --enable-checking=release --enable-clocale=gnu --enable-gnu-unique-object --enable-languages=c,c++,fortran --enable-libstdcxx-time=yes --enable-multiarch --enable-nls --enable-plugin --enable-shared --enable-threads=posix --host=aarch64-linux-gnu --target=aarch64-linux-gnu --with-arch-directory=aarch64 --with-default-libstdcxx-abi=new - GCC 8: --build=aarch64-linux-gnu --build=aarch64-linux-gnu --disable-bootstrap --disable-bootstrap --disable-browser-plugin --disable-browser-plugin --disable-libquadmath --disable-libquadmath --disable-werror --disable-werror --enable-checking=release --enable-checking=release --enable-clocale=gnu --enable-clocale=gnu --enable-fix-cortex-a53-843419 --enable-fix-cortex-a53-843419 --enable-gnu-unique-object --enable-gnu-unique-object --enable-languages=c,c++,fortran --enable-languages=c,c++,fortran --enable-libstdcxx-time=yes --enable-libstdcxx-time=yes --enable-multiarch --enable-multiarch --enable-nls --enable-nls --enable-plugin --enable-plugin --enable-shared --enable-shared --enable-threads=posix --enable-threads=posix --host=aarch64-linux-gnu --host=aarch64-linux-gnu --target=aarch64-linux-gnu --target=aarch64-linux-gnu --with-arch-directory=aarch64 --with-arch-directory=aarch64 --with-default-libstdcxx-abi=new --with-default-libstdcxx-abi=new - GCC 8 A57: --build=aarch64-linux-gnu --build=aarch64-linux-gnu --disable-bootstrap --disable-bootstrap --disable-browser-plugin --disable-browser-plugin --disable-libquadmath --disable-libquadmath --disable-werror --disable-werror --enable-checking=release --enable-checking=release --enable-clocale=gnu --enable-clocale=gnu --enable-fix-cortex-a53-843419 --enable-fix-cortex-a53-843419 --enable-gnu-unique-object --enable-gnu-unique-object --enable-languages=c,c++,fortran --enable-languages=c,c++,fortran --enable-libstdcxx-time=yes --enable-libstdcxx-time=yes --enable-multiarch --enable-multiarch --enable-nls --enable-nls --enable-plugin --enable-plugin --enable-shared --enable-shared --enable-threads=posix --enable-threads=posix --host=aarch64-linux-gnu --host=aarch64-linux-gnu --target=aarch64-linux-gnu --target=aarch64-linux-gnu --with-arch-directory=aarch64 --with-arch-directory=aarch64 --with-default-libstdcxx-abi=new --with-default-libstdcxx-abi=new - GCC 8 basic flags: --build=aarch64-linux-gnu --build=aarch64-linux-gnu --disable-bootstrap --disable-bootstrap --disable-browser-plugin --disable-browser-plugin --disable-libquadmath --disable-libquadmath --disable-werror --disable-werror --enable-checking=release --enable-checking=release --enable-clocale=gnu --enable-clocale=gnu --enable-fix-cortex-a53-843419 --enable-fix-cortex-a53-843419 --enable-gnu-unique-object --enable-gnu-unique-object --enable-languages=c,c++,fortran --enable-languages=c,c++,fortran --enable-libstdcxx-time=yes --enable-libstdcxx-time=yes --enable-multiarch --enable-multiarch --enable-nls --enable-nls --enable-plugin --enable-plugin --enable-shared --enable-shared --enable-threads=posix --enable-threads=posix --host=aarch64-linux-gnu --host=aarch64-linux-gnu --target=aarch64-linux-gnu --target=aarch64-linux-gnu --with-arch-directory=aarch64 --with-arch-directory=aarch64 --with-default-libstdcxx-abi=new --with-default-libstdcxx-abi=new - Scaling Governor: meson_cpufreq performance

C-Ray

This is a test of C-Ray, a simple raytracer designed to test the floating-point CPU performance. This test is multi-threaded (16 threads per core), will shoot 8 rays per pixel for anti-aliasing, and will generate a 1600 x 1200 image. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgSeconds, Fewer Is BetterC-Ray 1.1Total TimeGCC 7.1 baselineGCC 8GCC 8 A57GCC 8 basic flags4080120160200SE +/- 0.97, N = 3SE +/- 0.07, N = 3SE +/- 2.11, N = 6SE +/- 2.62, N = 6145.75157.90158.45166.43-mcpu=cortex-a53 -fomit-frame-pointer -fipa-pta -march=armv8-a+crc -ftree-vectorize -frename-registers-mcpu=cortex-a53 -fomit-frame-pointer -fipa-pta -march=armv8-a+crc -ftree-vectorize -frename-registers-mcpu=cortex-a57 -fomit-frame-pointer -fipa-pta -march=armv8-a+crc -ftree-vectorize-mcpu=cortex-a531. (CC) gcc options: -lm -lpthread -O3 -Ofast
OpenBenchmarking.orgSeconds, Fewer Is BetterC-Ray 1.1Total TimeGCC 7.1 baselineGCC 8GCC 8 A57GCC 8 basic flags306090120150Min: 144.76 / Avg: 145.75 / Max: 147.68Min: 157.77 / Avg: 157.9 / Max: 157.97Min: 154.73 / Avg: 158.45 / Max: 168.06Min: 161.28 / Avg: 166.43 / Max: 174.691. (CC) gcc options: -lm -lpthread -O3 -Ofast

GCC 7.1 baseline

Processor: Unknown @ 1.54GHz (4 Cores), Motherboard: Amlogic, Memory: 2048MB, Disk: 16GB NCard + 32GB 00000, Graphics: OSD

OS: Ubuntu 16.04, Kernel: 3.14.79-vegas95 (aarch64), Compiler: GCC 7.0.1 20170414 + Clang 3.8.0-2ubuntu4 + LLVM 3.8.0, File-System: ext4, Screen Resolution: 1280x1440

Compiler Notes: --build=aarch64-linux-gnu --disable-bootstrap --disable-browser-plugin --disable-libquadmath --disable-werror --enable-checking=release --enable-clocale=gnu --enable-gnu-unique-object --enable-languages=c,c++,fortran --enable-libstdcxx-time=yes --enable-multiarch --enable-nls --enable-plugin --enable-shared --enable-threads=posix --host=aarch64-linux-gnu --target=aarch64-linux-gnu --with-arch-directory=aarch64 --with-default-libstdcxx-abi=new
Processor Notes: Scaling Governor: meson_cpufreq performance

Testing initiated at 29 April 2017 19:21 by user odroid.

GCC 8

Compiler Notes: --build=aarch64-linux-gnu --build=aarch64-linux-gnu --disable-bootstrap --disable-bootstrap --disable-browser-plugin --disable-browser-plugin --disable-libquadmath --disable-libquadmath --disable-werror --disable-werror --enable-checking=release --enable-checking=release --enable-clocale=gnu --enable-clocale=gnu --enable-fix-cortex-a53-843419 --enable-fix-cortex-a53-843419 --enable-gnu-unique-object --enable-gnu-unique-object --enable-languages=c,c++,fortran --enable-languages=c,c++,fortran --enable-libstdcxx-time=yes --enable-libstdcxx-time=yes --enable-multiarch --enable-multiarch --enable-nls --enable-nls --enable-plugin --enable-plugin --enable-shared --enable-shared --enable-threads=posix --enable-threads=posix --host=aarch64-linux-gnu --host=aarch64-linux-gnu --target=aarch64-linux-gnu --target=aarch64-linux-gnu --with-arch-directory=aarch64 --with-arch-directory=aarch64 --with-default-libstdcxx-abi=new --with-default-libstdcxx-abi=new
Processor Notes: Scaling Governor: meson_cpufreq performance

Testing initiated at 29 April 2017 19:32 by user odroid.

GCC 8 A57

Compiler Notes: --build=aarch64-linux-gnu --build=aarch64-linux-gnu --disable-bootstrap --disable-bootstrap --disable-browser-plugin --disable-browser-plugin --disable-libquadmath --disable-libquadmath --disable-werror --disable-werror --enable-checking=release --enable-checking=release --enable-clocale=gnu --enable-clocale=gnu --enable-fix-cortex-a53-843419 --enable-fix-cortex-a53-843419 --enable-gnu-unique-object --enable-gnu-unique-object --enable-languages=c,c++,fortran --enable-languages=c,c++,fortran --enable-libstdcxx-time=yes --enable-libstdcxx-time=yes --enable-multiarch --enable-multiarch --enable-nls --enable-nls --enable-plugin --enable-plugin --enable-shared --enable-shared --enable-threads=posix --enable-threads=posix --host=aarch64-linux-gnu --host=aarch64-linux-gnu --target=aarch64-linux-gnu --target=aarch64-linux-gnu --with-arch-directory=aarch64 --with-arch-directory=aarch64 --with-default-libstdcxx-abi=new --with-default-libstdcxx-abi=new
Processor Notes: Scaling Governor: meson_cpufreq performance

Testing initiated at 29 April 2017 19:45 by user odroid.

GCC 8 basic flags

Processor: Unknown @ 1.54GHz (4 Cores), Motherboard: Amlogic, Memory: 2048MB, Disk: 16GB NCard + 32GB 00000, Graphics: OSD

OS: Ubuntu 16.04, Kernel: 3.14.79-vegas95 (aarch64), Compiler: GCC 8.0.0 20170429 + Clang 3.8.0-2ubuntu4 + LLVM 3.8.0, File-System: ext4, Screen Resolution: 1280x1440

Compiler Notes: --build=aarch64-linux-gnu --build=aarch64-linux-gnu --disable-bootstrap --disable-bootstrap --disable-browser-plugin --disable-browser-plugin --disable-libquadmath --disable-libquadmath --disable-werror --disable-werror --enable-checking=release --enable-checking=release --enable-clocale=gnu --enable-clocale=gnu --enable-fix-cortex-a53-843419 --enable-fix-cortex-a53-843419 --enable-gnu-unique-object --enable-gnu-unique-object --enable-languages=c,c++,fortran --enable-languages=c,c++,fortran --enable-libstdcxx-time=yes --enable-libstdcxx-time=yes --enable-multiarch --enable-multiarch --enable-nls --enable-nls --enable-plugin --enable-plugin --enable-shared --enable-shared --enable-threads=posix --enable-threads=posix --host=aarch64-linux-gnu --host=aarch64-linux-gnu --target=aarch64-linux-gnu --target=aarch64-linux-gnu --with-arch-directory=aarch64 --with-arch-directory=aarch64 --with-default-libstdcxx-abi=new --with-default-libstdcxx-abi=new
Processor Notes: Scaling Governor: meson_cpufreq performance

Testing initiated at 29 April 2017 21:33 by user odroid.