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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
| Metric | r0 | r1 | r2 | r3 | r4 | r5 | r6 |
|---|
| Total Time (s) | 187.19 | 122.35 | 90.05 | 73.89 | 65.16 | 60.94 | 59.04 |
| Max (Thread Active Time) (s) | 125.96 | 63.74 | 32.58 | 16.60 | 8.44 | 4.49 | 2.04 |
| Average Active Time (s) | 125.96 | 63.74 | 32.57 | 16.59 | 8.43 | 4.48 | 2.00 |
| Activity Ratio (%) | 67.3 | 52.1 | 36.2 | 22.4 | 12.9 | 7.35 | 3.39 |
| Average number of active threads | 0.673 | 1.042 | 1.447 | 1.796 | 2.069 | 2.351 | 2.166 |
| Affinity Stability (%) | 69.7 | 53.9 | 37.5 | 23.3 | 13.4 | 7.67 | 4.49 |
| GFLOPS | 69.4 E-3 | 67.0 E-3 | 76.7 E-3 | 0.109 | 0.166 | 0.300 | 0.622 |
| Time in analyzed loops (%) | 100.0 | 98.7 | 96.5 | 94.9 | 93.4 | 88.4 | 76.2 |
| Time in analyzed innermost loops (%) | 91.0 | 90.0 | 87.8 | 86.5 | 85.3 | 80.7 | 70.1 |
| Time in user code (%) | 100 | 98.7 | 96.5 | 94.9 | 93.4 | 88.4 | 76.3 |
| Compilation Options Score (%) | 50.0 | 50.0 | 50.0 | 50.0 | 50.0 | 50.0 | 50.0 |
| Array Access Efficiency (%) | Not Available | Not Available | Not Available | Not Available | Not Available | Not Available | 100 |
|
| Potential Speedups |  |
| Perfect Flow Complexity | Not Available | Not Available | Not Available | Not Available | Not Available | Not Available | 1.00 |
| Perfect OpenMP/MPI/Pthread/TBB | 1.00 | 1.00 | 1.00 | 1.00 | 1.01 | 1.01 | 1.06 |
| Perfect OpenMP/MPI/Pthread/TBB + Perfect Load Distribution | 1.00 | 1.01 | 1.04 | 1.05 | 1.07 | 1.13 | 1.34 |
| Scalability - Gap | 1.00 | 1.31 | 1.92 | 3.16 | 5.57 | 10.42 | 20.18 |
| No Scalar Integer | Potential Speedup | 2.90 | 2.83 | 2.71 | 2.63 | 2.56 | 2.30 | 1.82 |
| Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| FP Vectorised | Potential Speedup | 2.05 | 2.02 | 1.97 | 1.94 | 1.91 | 1.79 | 1.54 |
| Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Fully Vectorised | Potential Speedup | 5.33 | 5.04 | 4.62 | 4.33 | 4.07 | 3.35 | 2.26 |
| Nb Loops to get 80% | 2 | 2 | 2 | 2 | 2 | 2 | 1 |
| Only FP Arithmetic | Potential Speedup | 2.11 | 2.09 | 2.03 | 2.00 | 1.96 | 1.84 | 1.57 |
| Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Source Object | Issue |
| ▼kmeans-gcc-O3– | |
| ▼main.cpp– | |
| ○ | -mcpu=native is missing. |
| ○ | -funroll-loops is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-O3– | |
| ▼main.cpp– | |
| ○ | -mcpu=native is missing. |
| ○ | -funroll-loops is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-O3– | |
| ▼main.cpp– | |
| ○ | -mcpu=native is missing. |
| ○ | -funroll-loops is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-O3– | |
| ▼main.cpp– | |
| ○ | -mcpu=native is missing. |
| ○ | -funroll-loops is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-O3– | |
| ▼main.cpp– | |
| ○ | -mcpu=native is missing. |
| ○ | -funroll-loops is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-O3– | |
| ▼main.cpp– | |
| ○ | -mcpu=native is missing. |
| ○ | -funroll-loops is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-O3– | |
| ▼main.cpp– | |
| ○ | -mcpu=native is missing. |
| ○ | -funroll-loops is missing. |
| r0 | r1 | r2 | r3 | r4 | r5 | r6 |
| Experiment Name | K-Means scalability gcc-O3 100000000 | K-Means scalability gcc-O3 100000000 | K-Means scalability gcc-O3 100000000 | K-Means scalability gcc-O3 100000000 | K-Means scalability gcc-O3 100000000 | K-Means scalability gcc-O3 100000000 | K-Means scalability gcc-O3 100000000 |
| Application | ./kmeans/kmeans-gcc-O3 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| Timestamp | 2025-08-07 13:19:23 | 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 |
| Machine | ip-172-31-18-66 | 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 |
| Micro Architecture | ARM_NEOVERSE_V1 | 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 |
| OS Version | Linux 6.14.0-1010-aws #10~24.04.1-Ubuntu SMP Fri Jul 18 20:39:43 UTC 2025 | 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 |
| Micro Architecture used during static analysis | ARM_NEOVERSE_V1 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| Compilation Options |
kmeans-gcc-O3: GNU C++14 14.2.0 -mlittle-endian -mabi=lp64 -g -O3 -std=c++14 -fno-omit-frame-pointer -fopenmp | 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 |
| Number of threads observed | 1 | 2 | 4 | 8 | 16 | 32 | 64 |
| Frequency Driver | NA | 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 |
| Huge Pages | madvise | 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 |
| Number of sockets | 1 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| Number of cores per socket | 64 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| MAQAO version | 2025.1.2 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| MAQAO build | 7076967d3502a2d74409cf402702d5c5c2847726::20250729-175200 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| Comments | K-MEANS SOA AWS Graviton 3 (Neoverse V1) CPU, 1-64 threads runs | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |