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- r0: run_1_thread
- r1: run_2_threads
- r2: run_4_threads
- r3: run_8_threads
- r4: run_16_threads
- r5: run_32_threads
- r6: run_64_threads
- r7: run_96_threads
Metric | r0 | r1 | r2 | r3 | r4 | r5 | r6 | r7 |
---|
Total Time (s) | 86.34 | 47.77 | 23.48 | 12.42 | 6.63 | 3.42 | 1.76 | 2.16 |
Max (Thread Active Time) (s) | 78.72 | 43.31 | 21.49 | 11.36 | 6.06 | 3.13 | 1.34 | 1.07 |
Average Active Time (s) | 78.72 | 43.20 | 21.30 | 11.20 | 5.92 | 3.06 | 1.31 | 1.00 |
Activity Ratio (%) | 91.2 | 90.4 | 90.8 | 90.2 | 89.5 | 89.5 | 74.7 | 46.7 |
Average number of active threads | 0.912 | 1.809 | 3.630 | 7.216 | 14.303 | 28.560 | 47.502 | 44.543 |
Affinity Stability (%) | 99.6 | 99.5 | 99.5 | 99.4 | 99.2 | 98.7 | 97.7 | 97.6 |
GFLOPS | 4.236 | 8.198 | 16.073 | 30.920 | 59.380 | 120.819 | 214.349 | 105.928 |
Time in analyzed loops (%) | 100.0 | 97.6 | 95.0 | 91.5 | 88.4 | 90.2 | 93.4 | 48.1 |
Time in analyzed innermost loops (%) | 98.9 | 96.3 | 93.9 | 90.4 | 87.4 | 89.1 | 92.4 | 47.6 |
Time in user code (%) | 100 | 97.6 | 95.0 | 91.5 | 88.4 | 90.2 | 93.4 | 48.1 |
Compilation Options Score (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
Array Access Efficiency (%) | 99.7 | 99.7 | 99.7 | 99.7 | 99.7 | 99.7 | 99.7 | 99.7 |
|
Potential Speedups |  |
Perfect Flow Complexity | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
Perfect OpenMP/MPI/Pthread/TBB | 1.00 | 1.02 | 1.00 | 1.01 | 1.02 | 1.00 | 1.02 | 1.89 |
Perfect OpenMP/MPI/Pthread/TBB + Perfect Load Distribution | 1.00 | 1.03 | 1.06 | 1.11 | 1.16 | 1.14 | 1.10 | 2.22 |
Scalability - Gap | 1.00 | 1.11 | 1.09 | 1.15 | 1.23 | 1.27 | 1.31 | 2.40 |
No Scalar Integer | Potential Speedup | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
FP Vectorised | Potential Speedup | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
Fully Vectorised | Potential Speedup | 1.18 | 1.17 | 1.17 | 1.16 | 1.15 | 1.15 | 1.15 | 1.07 |
Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
Only FP Arithmetic | Potential Speedup | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
Source Object | Issue |
▼kmeans-acfl-O3-all– | |
▼main.cpp– | |
○ | |
Source Object | Issue |
▼kmeans-acfl-O3-all– | |
▼main.cpp– | |
○ | |
Source Object | Issue |
▼kmeans-acfl-O3-all– | |
▼main.cpp– | |
○ | |
Source Object | Issue |
▼kmeans-acfl-O3-all– | |
▼main.cpp– | |
○ | |
Source Object | Issue |
▼kmeans-acfl-O3-all– | |
▼main.cpp– | |
○ | |
Source Object | Issue |
▼kmeans-acfl-O3-all– | |
▼main.cpp– | |
○ | |
Source Object | Issue |
▼kmeans-acfl-O3-all– | |
▼main.cpp– | |
○ | |
Source Object | Issue |
▼kmeans-acfl-O3-all– | |
▼main.cpp– | |
○ | |
| r0 | r1 | r2 | r3 | r4 | r5 | r6 | r7 |
Experiment Name | K-Means scalability acfl-O3-all 100000000 | K-Means scalability acfl-O3-all 100000000 | K-Means scalability acfl-O3-all 100000000 | K-Means scalability acfl-O3-all 100000000 | K-Means scalability acfl-O3-all 100000000 | K-Means scalability acfl-O3-all 100000000 | K-Means scalability acfl-O3-all 100000000 | K-Means scalability acfl-O3-all 100000000 |
Application | ./kmeans/kmeans-acfl-O3-all | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Timestamp | 2025-07-17 11:10:29 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Experiment Type | Sequential | OpenMP; | same as r1 | same as r1 | same as r1 | same as r1 | same as r1 | same as r1 |
Machine | ip-172-31-47-249.ec2.internal | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Architecture | aarch64 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Micro Architecture | ARM_NEOVERSE_V2 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Model Name | | | | | | | | |
Cache Size | | | | | | | | |
Number of Cores | | | | | | | | |
Maximal Frequency | 0 GHz | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
OS Version | Linux 6.1.109-118.189.amzn2023.aarch64 #1 SMP Tue Sep 10 08:58:40 UTC 2024 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Architecture used during static analysis | aarch64 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Micro Architecture used during static analysis | ARM_NEOVERSE_V2 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Compilation Options |
kmeans-acfl-O3-all: 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 -march=native -std=c++14 -g -fno-omit-frame-pointer -fopenmp -O3 -funroll-loops -ffast-math -grecord-command-line -c -o main.o main.cpp | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Number of processes observed | 1 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Number of threads observed | 1 | 2 | 4 | 8 | 16 | 32 | 64 | 96 |
Frequency Driver | NA | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Frequency Governor | NA | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Huge Pages | madvise | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Hyperthreading | off | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Number of sockets | 1 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Number of cores per socket | 96 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
MAQAO version | 2025.1.1 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
MAQAO build | 2302fb4b01f3b07cccb215042f4e5c7e9fcc3718::20250717-122749 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Comments | AWS Graviton 4 (Neoverse V2) CPU, 1-96 threads runs | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |