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Global Metrics

Metricr0r1r2r3r4r5r6r7
Total Time (s)163.4086.7347.7928.4618.8113.9812.4011.60
Max (Thread Active Time) (s)163.1186.5347.6828.4018.7313.9112.3311.52
Average Active Time (s)163.1181.9940.5820.4110.175.143.422.57
Activity Ratio (%)99.894.584.971.754.136.827.622.2
Average number of active threads0.9981.8913.3975.7388.65011.75613.25114.172
Affinity Stability (%)100.099.799.398.898.097.296.896.5
GFLOPS5.38610.14817.13429.90742.32659.93965.93869.302
Time in analyzed loops (%)100.0100.0100.0100.099.999.999.899.8
Time in analyzed innermost loops (%)88.188.388.688.788.688.388.588.5
Time in user code (%)100100.0100.0100.099.999.999.899.8
Compilation Options Score (%)62.562.562.562.562.562.562.562.5
Array Access Efficiency (%)34.134.033.633.633.633.933.633.6
Potential Speedups
Perfect Flow Complexity1.001.001.001.001.001.001.001.00
Perfect OpenMP/MPI/Pthread/TBB1.001.001.001.001.001.001.001.00
Perfect OpenMP/MPI/Pthread/TBB + Perfect Load Distribution1.001.061.181.391.842.713.614.50
Scalability - Gap1.001.061.171.391.842.743.644.54
No Scalar IntegerPotential Speedup1.061.061.061.061.061.061.061.06
Nb Loops to get 80%22222222
FP VectorisedPotential Speedup1.581.581.591.591.591.581.581.58
Nb Loops to get 80%11111111
Fully VectorisedPotential Speedup4.964.964.954.954.944.944.914.91
Nb Loops to get 80%33333333
Only FP ArithmeticPotential Speedup1.081.081.081.081.081.081.081.08
Nb Loops to get 80%22222222

Scalability Speedup

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-Ofast-soa–
▼main_soa.cpp–
○-O3 or -Ofast is missing.
○-funroll-loops is missing.

Path Count Profiles

Coverage

Count

Low Iteration Count Profiles

Coverage

Count

Average Number of Active Threads

Run 1 - run_1_thread

Run 2 - run_2_threads

Run 3 - run_4_threads

Run 4 - run_8_threads

Run 5 - run_16_threads

Run 6 - run_32_threads

Run 7 - run_48_threads

Run 8 - run_64_threads

Experiment Summaries

r0r1r2r3r4r5r6r7
Experiment NameK-Means scalability gcc-Ofast-soa 100000000K-Means scalability gcc-Ofast-soa 100000000K-Means scalability gcc-Ofast-soa 100000000K-Means scalability gcc-Ofast-soa 100000000K-Means scalability gcc-Ofast-soa 100000000K-Means scalability gcc-Ofast-soa 100000000K-Means scalability gcc-Ofast-soa 100000000K-Means scalability gcc-Ofast-soa 100000000
Application./kmeans/kmeans-gcc-Ofast-soasame as r0same as r0same as r0same as r0same as r0same as r0same as r0
Timestamp2025-07-07 11:15:38same as r0same as r0same as r0same as r0same as r0same as r0same as r0
Experiment TypeSequentialOpenMP; same as r1same as r1same as r1same as r1same as r1same as r1
Machineip-172-31-18-66same as r0same as r0same as r0same as r0same as r0same as r0same as r0
Architectureaarch64same as r0same as r0same as r0same as r0same as r0same as r0same as r0
Micro ArchitectureARM_NEOVERSE_V1same as r0same as r0same 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 r0same as r0same as r0
OS VersionLinux 6.8.0-1030-aws #32-Ubuntu SMP Wed May 28 19:33:40 UTC 2025same as r0same as r0same as r0same as r0same as r0same as r0same as r0
Architecture used during static analysisaarch64same as r0same as r0same 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 r0same as r0same as r0
Compilation Options kmeans-gcc-Ofast-soa: GNU C++14 14.2.0 -mlittle-endian -mabi=lp64 -mcpu=neoverse-v1+sm4+crc+aes+sha3 -g -Ofast -std=c++14 -fno-omit-frame-pointer -fopenmp GNU C17 14.2.0 -mlittle-endian -mabi=lp64 -g -g -g -O2 -O2 -O2 -fbuilding-libgcc -fno-stack-protector -fPIC same as r0same as r0same as r0same as r0same as r0same as r0same as r0
Number of processes observed1same as r0same as r0same as r0same as r0same as r0same as r0same as r0
Number of threads observed124816324864
Frequency DriverNAsame as r0same as r0same as r0same as r0same as r0same as r0same as r0
Frequency GovernorNAsame as r0same as r0same as r0same as r0same as r0same as r0same as r0
Huge Pagesmadvisesame as r0same as r0same as r0same as r0same as r0same as r0same as r0
Hyperthreadingoffsame as r0same as r0same as r0same as r0same as r0same as r0same as r0
Number of sockets1same as r0same as r0same as r0same as r0same as r0same as r0same as r0
Number of cores per socket64same as r0same as r0same as r0same as r0same as r0same as r0same as r0
MAQAO version2025.1.1same as r0same as r0same as r0same as r0same as r0same as r0same as r0
MAQAO buildd6222087d529d549c11e227a1cd513200c205d3a::20250704-175912same as r0same as r0same as r0same as r0same as r0same as r0same as r0
CommentsAWS Graviton 3 (Neoverse V1) CPU, 1-64 threads runssame as r0same as r0same as r0same as r0same as r0same as r0same as r0
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