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Global Metrics

Metricr0r1r2r3r4r5
Total Time (s)85.1283.4287.9683.3483.5482.60
Max (Thread Active Time) (s)22.1921.2325.6520.3920.8119.39
Average Active Time (s)21.6120.6225.1819.4019.4318.54
Activity Ratio (%)74.573.477.268.968.668.0
Average number of active threads16.24715.82218.32514.90014.88614.368
Affinity Stability (%)96.496.396.896.396.396.2
GFLOPS4.0520.3162.6203.1943.1110.324
Time in analyzed loops (%)72.875.880.981.580.980.2
Time in analyzed innermost loops (%)66.869.580.180.880.36.36
Time in user code (%)72.875.880.881.580.980.2
Compilation Options Score (%)37.550.050.0100100100
Array Access Efficiency (%)25.025.095.395.095.340.0
Potential Speedups
Perfect Flow Complexity1.001.001.001.001.001.00
Perfect OpenMP/MPI/Pthread/TBB1.121.111.071.021.051.03
Perfect OpenMP/MPI/Pthread/TBB + Perfect Load Distribution1.411.361.261.291.321.30
No Scalar IntegerPotential Speedup1.851.931.291.031.021.37
Nb Loops to get 80%111111
FP VectorisedPotential Speedup1.531.581.271.541.541.34
Nb Loops to get 80%111111
Fully VectorisedPotential Speedup2.432.592.092.642.612.56
Nb Loops to get 80%221211
Only FP ArithmeticPotential Speedup1.641.681.311.041.041.40
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 V1 GCC O2 Base code version (@ 64 threads, 250 iters)

Run 2 - Neoverse V1 GCC O3 Base code version (@ 64 threads, 250 iters)

Run 3 - Neoverse V1 GCC Ofast Base code version (@ 64 threads, 250 iters)

Run 4 - Neoverse V1 ACFL O2 Base code version (@ 64 threads, 250 iters)

Run 5 - Neoverse V1 ACFL O3 Base code version (@ 64 threads, 250 iters)

Run 6 - Neoverse V1 ACFL Ofast Base code version (@ 64 threads, 250 iters)

Experiment Summaries

r0r1r2r3r4r5
Experiment NameK-Means single gcc-O2 100000000K-Means scalability gcc-O3 100000000K-Means single gcc-Ofast 100000000K-Means single acfl-O2 100000000K-Means single 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
Timestamp2025-09-05 12:55:352025-08-18 12:00:222025-09-05 12:57:042025-09-05 12:58:352025-09-05 13:00:022025-08-18 12:01:49
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 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_Ubuntu-20.04/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_Ubuntu-20.04/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_Ubuntu-20.04/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 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 build318b0d90fe5654671df7f82670f45ecac5401a28::20250903-1823093c12046452d68b38e394be5cd9e057265a89bbcf::20250812-175904same as r0same as r0same as r0same as r1
CommentsK-MEANS Base AWS Graviton 3 (Neoverse V1) CPU, 64 threads run, 250 iterationsK-MEANS SOA AWS Graviton 3 (Neoverse V1) CPU, 64 threads run, 250 iterationssame as r0same as r0same as r0same as r1
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