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Global Metrics

Metricr0r1r2r3r4r5
Total Time (s)23.1422.2821.1021.6821.8721.19
Max (Thread Active Time) (s)23.0922.2421.0621.3921.5220.84
Average Active Time (s)23.0822.2221.0520.7020.9020.25
Activity Ratio (%)99.999.999.995.795.895.8
Average number of active threads63.82763.82963.82461.13261.17961.160
Affinity Stability (%)100.0100.0100.099.999.999.9
Time in analyzed loops (%)41.039.436.986.486.686.6
Time in analyzed innermost loops (%)4.885.005.2647.246.849.4
Time in user code (%)83.283.183.186.486.686.6
Compilation Options Score (%)62.575.075.0100100100
Array Access Efficiency (%)62.562.562.599.499.499.5
Potential Speedups
Perfect Flow Complexity1.001.001.001.001.001.00
Perfect OpenMP/MPI/Pthread/TBB1.041.041.051.041.031.04
Perfect OpenMP/MPI/Pthread/TBB + Perfect Load Distribution1.201.201.201.191.181.18
No Scalar IntegerPotential Speedup1.441.401.331.381.391.15
Nb Loops to get 80%111112
FP VectorisedPotential Speedup1.261.251.201.991.991.96
Nb Loops to get 80%112777
Fully VectorisedPotential Speedup1.281.261.322.212.222.61
Nb Loops to get 80%222777
Only FP ArithmeticPotential Speedup1.011.011.121.011.011.12
Nb Loops to get 80%331331

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-O2–
▼vector.tcc–
○-O3 or -Ofast is missing.
○-mcpu=native is missing.
▼simulation.cpp–
○-O3 or -Ofast is missing.
○-mcpu=native is missing.
▼particle.cpp–
○-O3 or -Ofast is missing.
○-mcpu=native is missing.

Path Count Profiles

Coverage

Count

Low Iteration Count Profiles

Coverage

Count

Average Number of Active Threads

Run 1 - Neoverse GCC O2

Run 2 - Neoverse GCC O3

Run 3 - Neoverse GCC Ofast

Run 4 - Neoverse ACFL O2

Run 5 - Neoverse ACFL O3

Run 6 - Neoverse ACFL Ofast

Experiment Summaries

r0r1r2r3r4r5
Experiment NameMD Scalability Graviton 3 2-64 threads runs | Version : gcc-O2MD Scalability Graviton 3 2-64 threads runs | Version : gcc-O3MD Scalability Graviton 3 2-64 threads runs | Version : gcc-OfastMD Scalability Graviton 3 2-64 threads runs | Version : acfl-O2MD Scalability Graviton 3 2-64 threads runs | Version : acfl-O3MD Scalability Graviton 3 2-64 threads runs | Version : acfl-Ofast
Application./bin/md-gcc-O2./bin/md-gcc-O3./bin/md-gcc-Ofast./bin/md-acfl-O2./bin/md-acfl-O3./bin/md-acfl-Ofast
Timestamp2025-08-20 11:43:402025-08-20 12:02:392025-08-20 12:20:532025-08-20 12:37:592025-08-20 12:55:412025-08-20 13:13:35
Experiment TypeOpenMP; same as r0same as r0same as r0same as r0same as r0
Machineip-172-31-18-66same as r0same as r0same as r0same as r0same as r0
Architectureaarch64same as r0same as r0same as r0same as r0same as r0
Micro ArchitectureARM_NEOVERSE_V1same as r0same as r0same as r0same as r0same as r0
Model Name
Cache Size
Number of Cores
Maximal Frequency0 GHzsame as r0same as r0same 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 r0same as r0same as r0
Architecture used during static analysisaarch64same as r0same as r0same as r0same as r0same as r0
Micro Architecture used during static analysisARM_NEOVERSE_V1same as r0same as r0same as r0same as r0same as r0
Compilation Options md-gcc-O2: GNU C++17 14.2.0 -mlittle-endian -mabi=lp64 -g -O2 -std=c++17 -fopenmp -funroll-loops md-gcc-O3: GNU C++17 14.2.0 -mlittle-endian -mabi=lp64 -g -O3 -std=c++17 -fopenmp -funroll-loops md-gcc-Ofast: GNU C++17 14.2.0 -mlittle-endian -mabi=lp64 -g -Ofast -std=c++17 -fopenmp -funroll-loops md-acfl-O2: 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 -O2 -grecord-command-line -funroll-loops -g -I include -march=native -mcpu=native -c simulation.cpp -o simulation.o 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 -O2 -grecord-command-line -funroll-loops -g -I include -march=native -mcpu=native -c main.cpp -o main.o md-acfl-O3: 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 -O3 -grecord-command-line -funroll-loops -g -I include -march=native -mcpu=native -c simulation.cpp -o simulation.o 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 -O3 -grecord-command-line -funroll-loops -g -I include -march=native -mcpu=native -c main.cpp -o main.o 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 -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
Number of processes observed1same as r0same as r0same as r0same as r0same as r0
Number of threads observed64same as r0same as r0same as r0same as r0same as r0
Frequency DriverNAsame as r0same as r0same as r0same as r0same as r0
Frequency GovernorNAsame as r0same as r0same as r0same as r0same as r0
Huge Pagesmadvisesame as r0same as r0same as r0same as r0same as r0
Hyperthreadingoffsame as r0same as r0same as r0same as r0same as r0
Number of sockets1same as r0same as r0same as r0same as r0same as r0
Number of cores per socket64same as r0same as r0same as r0same as r0same as r0
MAQAO version2025.1.2same as r0same as r0same as r0same as r0same as r0
MAQAO build3c12046452d68b38e394be5cd9e057265a89bbcf::20250812-175904same as r0same as r0same as r0same as r0same as r0
CommentsMolecular Dynamics AWS Graviton 3 (Neoverse V1 CPU), 2-64 threads runssame as r0same as r0same as r0same as r0same as r0
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