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Global Metrics

Metricr0r1r2r3r4r5
Total Time (s)62.3262.3966.1364.0063.6164.39
Max (Thread Active Time) (s)12.1412.2716.0613.8013.2714.13
Average Active Time (s)11.2511.6614.9011.8811.3612.43
Activity Ratio (%)49.150.555.948.247.149.6
Average number of active threads17.33517.94321.62717.82417.15018.532
Affinity Stability (%)97.798.298.197.897.897.9
GFLOPS51.91055.17641.04551.47051.50449.818
Time in analyzed loops (%)47.051.639.752.951.650.2
Time in analyzed innermost loops (%)43.247.639.552.451.26.52
Time in user code (%)47.051.639.852.951.650.2
Compilation Options Score (%)37.550.050.0100100100
Array Access Efficiency (%)25.025.088.294.796.740.0
Potential Speedups
Perfect Flow Complexity1.001.001.001.001.001.00
Perfect OpenMP/MPI/Pthread/TBB1.581.701.651.251.291.40
Perfect OpenMP/MPI/Pthread/TBB + Perfect Load Distribution2.292.042.712.202.262.27
No Scalar IntegerPotential Speedup1.431.481.131.021.011.20
Nb Loops to get 80%112111
FP VectorisedPotential Speedup1.211.221.011.211.211.01
Nb Loops to get 80%111111
Fully VectorisedPotential Speedup1.141.161.061.231.211.10
Nb Loops to get 80%232112
Only FP ArithmeticPotential Speedup1.341.391.151.031.021.22
Nb Loops to get 80%112112

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 250 iterations

Run 2 - Neoverse V2 GCC O3 250 iterations

Run 3 - Neoverse V2 GCC Ofast 250 iterations

Run 4 - Neoverse V2 ACFL O2 250 iterations

Run 5 - Neoverse V2 ACFL O3 250 iterations

Run 6 - Neoverse V2 ACFL Ofast 250 iterations

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
Timestamp2025-09-04 13:10:062025-09-04 13:11:172025-09-04 13:12:282025-09-04 13:13:422025-09-04 13:14:542025-09-04 13:16:06
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
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 build318b0d90fe5654671df7f82670f45ecac5401a28::20250903-182309same as r0same as r0same as r0same as r0same as r0
CommentsK-MEANS Base AWS Graviton 4 (Neoverse V2) CPU, 96 threads run, 250 iterationssame as r0same as r0same as r0same as r0same as r0
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