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Global Metrics

Metricr0r1r2r3r4r5
Total Time (s)43.7243.3142.3343.4743.6342.65
Max (Thread Active Time) (s)1.491.321.521.531.631.41
Average Active Time (s)1.311.201.421.271.391.15
Activity Ratio (%)2.992.7747.32.913.1837.6
Average number of active threads2.8702.6543.2222.7953.0502.584
Affinity Stability (%)5.625.3382.35.956.2382.1
GFLOPS6.8934.4276.1938.8338.4809.119
Time in analyzed loops (%)37.640.345.046.943.148.5
Time in analyzed innermost loops (%)34.937.544.746.542.71.51
Time in user code (%)37.640.345.046.943.148.5
Compilation Options Score (%)37.550.050.0100100100
Array Access Efficiency (%)Not Available099.699.899.7Not Available
Potential Speedups
Perfect Flow ComplexityNot Available1.001.001.001.00Not Available
Perfect OpenMP/MPI/Pthread/TBB1.801.741.581.281.351.18
Perfect OpenMP/MPI/Pthread/TBB + Perfect Load Distribution3.032.742.382.572.722.53
No Scalar IntegerPotential Speedup1.251.271.131.001.001.19
Nb Loops to get 80%111111
FP VectorisedPotential Speedup1.131.141.001.171.141.00
Nb Loops to get 80%111111
Fully VectorisedPotential Speedup1.081.091.031.161.131.06
Nb Loops to get 80%221111
Only FP ArithmeticPotential Speedup1.191.211.131.001.001.19
Nb Loops to get 80%111111

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
▼kmeans-gcc-O2–
▼main.cpp–
○-O3 or -Ofast is missing.
○-mcpu=native is missing.
○-funroll-loops is missing.

Path Count Profiles

Coverage

Count

Low Iteration Count Profiles

Coverage

Count

Average Number of Active Threads

Run 1 - Neoverse V2 GCC O2

Run 2 - Neoverse V2 GCC O3

Run 3 - Neoverse V2 GCC Ofast

Run 4 - Neoverse V2 ACFL O2

Run 5 - Neoverse V2 ACFL O3

Run 6 - Neoverse V2 ACFL Ofast

Experiment Summaries

r0r1r2r3r4r5
Experiment NameK-Means scalability gcc-O2 100000000K-Means scalability gcc-O3 100000000K-Means scalability gcc-Ofast 100000000K-Means scalability acfl-O2 100000000K-Means scalability acfl-O3 100000000K-Means scalability acfl-Ofast 100000000
Application./kmeans/kmeans-gcc-O2./kmeans/kmeans-gcc-O3./kmeans/kmeans-gcc-Ofast./kmeans/kmeans-acfl-O2./kmeans/kmeans-acfl-O3./kmeans/kmeans-acfl-Ofast
Timestamp2025-08-07 16:45:152025-08-07 16:56:022025-08-07 17:06:442025-08-07 16:12:042025-08-07 16:23:182025-08-07 16:34:30
Experiment TypeOpenMP; same as r0same as r0same as r0same as r0same as r0
Machineip-172-31-47-249.ec2.internalsame as r0same as r0same as r0same as r0same as r0
Architectureaarch64same as r0same as r0same as r0same as r0same as r0
Micro ArchitectureARM_NEOVERSE_V2same 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 6.1.109-118.189.amzn2023.aarch64 #1 SMP Tue Sep 10 08:58:40 UTC 2024same 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_V2same as r0same as r0same as r0same as r0same as r0
Compilation Options kmeans-gcc-O2: GNU C++14 14.2.0 -mlittle-endian -mabi=lp64 -g -O2 -std=c++14 -fno-omit-frame-pointer -fopenmp kmeans-gcc-O3: GNU C++14 14.2.0 -mlittle-endian -mabi=lp64 -g -O3 -std=c++14 -fno-omit-frame-pointer -fopenmp kmeans-gcc-Ofast: GNU C++14 14.2.0 -mlittle-endian -mabi=lp64 -g -Ofast -std=c++14 -fno-omit-frame-pointer -fopenmp kmeans-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_AmazonLinux-2023/llvm-bin/clang-19 --driver-mode=g++ -I . -MMD -MP -Wall -std=c++14 -g -fno-omit-frame-pointer -fopenmp -O2 -grecord-command-line -march=native -mcpu=native -c -o main.o main.cpp kmeans-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_AmazonLinux-2023/llvm-bin/clang-19 --driver-mode=g++ -I . -MMD -MP -Wall -std=c++14 -g -fno-omit-frame-pointer -fopenmp -O3 -grecord-command-line -march=native -mcpu=native -c -o main.o main.cpp kmeans-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_AmazonLinux-2023/llvm-bin/clang-19 --driver-mode=g++ -I . -MMD -MP -Wall -std=c++14 -g -fno-omit-frame-pointer -fopenmp -Ofast -grecord-command-line -march=native -mcpu=native -c -o main.o main.cpp 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 observed96same 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 socket96same 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 build7076967d3502a2d74409cf402702d5c5c2847726::20250729-175200same as r0same as r0same as r0same as r0same as r0
CommentsAWS Graviton 4 (Neoverse V2) CPU, 1-96 threads runssame as r0same as r0same as r0same as r0same as r0
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