-Ofast -flto

ARMv8 Neoverse-V1 testing on Ubuntu 20.04 via the Phoronix Test Suite.

HTML result view exported from: https://openbenchmarking.org/result/2308095-NE-OFASTFLTO07.

-Ofast -fltoProcessorMotherboardChipsetMemoryDiskNetworkOSKernelVulkanCompilerFile-System-Ofast -fltoARMv8 Neoverse-V1 (32 Cores)Amazon EC2 c7g.8xlarge (1.0 BIOS)Amazon Device 020062GB550GB Amazon Elastic Block StoreAmazon ElasticUbuntu 20.045.15.0-1040-aws (aarch64)1.1.182GCC 11.4.0 + Clang 18.0.0 + LLVM 18.0.0ext4OpenBenchmarking.org- Transparent Huge Pages: madvise- --build=aarch64-linux-gnu --disable-libquadmath --disable-libquadmath-support --disable-werror --enable-bootstrap --enable-checking=release --enable-clocale=gnu --enable-default-pie --enable-fix-cortex-a53-843419 --enable-gnu-unique-object --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++,m2 --enable-libphobos-checking=release --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-link-serialization=2 --enable-multiarch --enable-nls --enable-objc-gc=auto --enable-plugin --enable-shared --enable-threads=posix --host=aarch64-linux-gnu --program-prefix=aarch64-linux-gnu- --target=aarch64-linux-gnu --with-build-config=bootstrap-lto-lean --with-default-libstdcxx-abi=new --with-gcc-major-version-only --with-target-system-zlib=auto -v - itlb_multihit: Not affected + l1tf: Not affected + mds: Not affected + meltdown: Not affected + mmio_stale_data: Not affected + retbleed: Not affected + spec_store_bypass: Mitigation of SSB disabled via prctl + spectre_v1: Mitigation of __user pointer sanitization + spectre_v2: Mitigation of CSV2 BHB + srbds: Not affected + tsx_async_abort: Not affected

-Ofast -fltogromacs: MPI CPU - water_GMX50_bareStandard Deviation-Ofast -flto2.3180.37%OpenBenchmarking.org

GROMACS

Implementation: MPI CPU - Input: water_GMX50_bare

OpenBenchmarking.orgNs Per Day, More Is BetterGROMACS 2023Implementation: MPI CPU - Input: water_GMX50_bare-Ofast -flto0.52161.04321.56482.08642.608SE +/- 0.005, N = 32.3181. (CXX) g++ options: -Ofast -flto -pthread

Phoronix Test Suite v10.8.5