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Global Metrics

Metricr0r1r2r3
Total Time (s)21.1021.1421.1921.19
Max (Thread Active Time) (s)21.0621.1020.8420.89
Average Active Time (s)21.0521.0820.2520.26
Activity Ratio (%)99.999.995.895.8
Average number of active threads63.82463.82261.16061.181
Affinity Stability (%)100.0100.099.999.9
Time in analyzed loops (%)36.936.686.686.4
Time in analyzed innermost loops (%)5.265.0049.449.2
Time in user code (%)83.183.286.686.4
Compilation Options Score (%)75.075.0100100
Array Access Efficiency (%)62.562.599.599.5
Potential Speedups
Perfect Flow Complexity1.001.001.001.00
Perfect OpenMP/MPI/Pthread/TBB1.051.051.041.04
Perfect OpenMP/MPI/Pthread/TBB + Perfect Load Distribution1.201.201.181.19
No Scalar IntegerPotential Speedup1.331.331.151.15
Nb Loops to get 80%1122
FP VectorisedPotential Speedup1.201.201.961.96
Nb Loops to get 80%2277
Fully VectorisedPotential Speedup1.321.322.612.59
Nb Loops to get 80%2277
Only FP ArithmeticPotential Speedup1.121.121.121.12
Nb Loops to get 80%1111

Cumulated Speedup If No Scalar Integer

Cumulated Speedup If FP Vectorized

Cumulated Speedup If Fully Vectorized

Cumulated Speedup If Only FP Arithmetic

Loop Based Profiles

Innermost / Single Loops

Inbetween Loops

Outermost Loops

Cumulated Coverage With All Loops

Innermost Loop Based Profiles

Coverage

Count

Application Categorization

Time

Coverage

Compilation Options

Source ObjectIssue
▼md-gcc-Ofast–
▼simulation.cpp–
○-mcpu=native is missing.

Path Count Profiles

Coverage

Count

Low Iteration Count Profiles

Coverage

Count

Average Number of Active Threads

Run 1 - Neoverse GCC Ofast - Base version (@64 threads)

Run 2 - Neoverse GCC Ofast - Code Optimisations version (@64 threads)

Run 3 - Neoverse ACFL Ofast - Base version (@64 threads)

Run 4 - Neoverse ACFL Ofast - Code Optimisations version (@64 threads)

Experiment Summaries

r0r1r2r3
Experiment NameMD Scalability Graviton 3 2-64 threads runs | Version : gcc-OfastMD Scalability Graviton 3 2-64 threads runs - Code Optimisations version | Version : gcc-OfastMD Scalability Graviton 3 2-64 threads runs | Version : acfl-OfastMD Scalability Graviton 3 2-64 threads runs - Code Optimisations version | Version : acfl-Ofast
Application./bin/md-gcc-Ofastsame as r0./bin/md-acfl-Ofastsame as r2
Timestamp2025-08-20 12:20:532025-08-25 10:56:122025-08-20 13:13:352025-08-25 11:13:16
Experiment TypeOpenMP; same as r0same as r0same as r0
Machineip-172-31-18-66same as r0same as r0same as r0
Architectureaarch64same as r0same as r0same as r0
Micro ArchitectureARM_NEOVERSE_V1same as r0same as r0same as r0
Model Name
Cache Size
Number of Cores
Maximal Frequency0 GHzsame as r0same as r0same as r0
OS VersionLinux 6.14.0-1010-aws #10~24.04.1-Ubuntu SMP Fri Jul 18 20:39:43 UTC 2025same as r0same as r0same as r0
Architecture used during static analysisaarch64same as r0same as r0same as r0
Micro Architecture used during static analysisARM_NEOVERSE_V1same as r0same as r0same as r0
Compilation Options md-gcc-Ofast: GNU C++17 14.2.0 -mlittle-endian -mabi=lp64 -g -Ofast -std=c++17 -fopenmp -funroll-loops same as r0md-acfl-Ofast: Arm C/C++/Fortran Compiler version 24.10.1 (build number 4) (based on LLVM 19.1.0) /opt/arm/arm-linux-compiler-24.10.1_Ubuntu-20.04/llvm-bin/clang-19 --driver-mode=g++ -std=c++17 -fopenmp -D USE_OPENMP -Wall -Werror -Wextra -Ofast -grecord-command-line -funroll-loops -g -I include -march=native -mcpu=native -c simulation.cpp -o simulation.o GNU C17 14.2.0 -mlittle-endian -mabi=lp64 -g -g -g -O2 -O2 -O2 -fbuilding-libgcc -fno-stack-protector -fPIC md-acfl-Ofast: Arm C/C++/Fortran Compiler version 24.10.1 (build number 4) (based on LLVM 19.1.0) /opt/arm/arm-linux-compiler-24.10.1_Ubuntu-20.04/llvm-bin/clang-19 --driver-mode=g++ -std=c++17 -D COMPUTE_FORCES_OPTIMS -Wall -Werror -Wextra -Ofast -grecord-command-line -funroll-loops -g -I include -march=native -mcpu=native -fopenmp -D USE_OPENMP -c simulation.cpp -o simulation.o GNU C17 14.2.0 -mlittle-endian -mabi=lp64 -g -g -g -O2 -O2 -O2 -fbuilding-libgcc -fno-stack-protector -fPIC
Number of processes observed1same as r0same as r0same as r0
Number of threads observed64same as r0same as r0same as r0
Frequency DriverNAsame as r0same as r0same as r0
Frequency GovernorNAsame as r0same as r0same as r0
Huge Pagesmadvisesame as r0same as r0same as r0
Hyperthreadingoffsame as r0same as r0same as r0
Number of sockets1same as r0same as r0same as r0
Number of cores per socket64same as r0same as r0same as r0
MAQAO version2025.1.2same as r0same as r0same as r0
MAQAO build3c12046452d68b38e394be5cd9e057265a89bbcf::20250812-175904same as r0same as r0same as r0
CommentsMolecular Dynamics AWS Graviton 3 (Neoverse V1 CPU), 2-64 threads runsMolecular Dynamics - CODE OPTS version - AWS Graviton 3 (Neoverse V1 CPU), 2-64 threads runssame as r0same as r1
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