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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_48_threads
- r7: run_64_threads
| Metric | r0 | r1 | r2 | r3 | r4 | r5 | r6 | r7 |
|---|
| Total Time (s) | 102.90 | 56.08 | 32.62 | 20.97 | 15.17 | 12.25 | 11.28 | 10.85 |
| Max (Thread Active Time) (s) | 102.61 | 55.89 | 32.51 | 20.89 | 15.11 | 12.19 | 11.21 | 10.78 |
| Average Active Time (s) | 102.61 | 51.33 | 25.68 | 12.85 | 6.44 | 3.23 | 2.16 | 1.63 |
| Activity Ratio (%) | 99.7 | 91.5 | 78.7 | 61.3 | 42.5 | 26.4 | 19.2 | 15.0 |
| Average number of active threads | 0.997 | 1.831 | 3.149 | 4.904 | 6.792 | 8.439 | 9.197 | 9.593 |
| Affinity Stability (%) | 100.0 | 99.6 | 99.0 | 98.4 | 97.5 | 96.8 | 96.4 | 96.2 |
| GFLOPS | 27.2 E-3 | 55.6 E-3 | 99.3 E-3 | 0.200 | 0.358 | 0.500 | 0.560 | 0.590 |
| Time in analyzed loops (%) | 100.0 | 100.0 | 100.0 | 100.0 | 99.9 | 99.8 | 99.8 | 99.7 |
| Time in analyzed innermost loops (%) | 97.3 | 97.4 | 97.4 | 97.3 | 97.2 | 97.2 | 97.2 | 96.9 |
| Time in user code (%) | 100 | 100 | 100.0 | 100.0 | 99.9 | 99.8 | 99.8 | 99.7 |
| Compilation Options Score (%) | 75.0 | 75.0 | 75.0 | 75.0 | 75.0 | 75.0 | 75.0 | 75.0 |
| Array Access Efficiency (%) | 25.0 | 25.0 | 25.0 | 25.0 | 25.0 | 25.0 | 25.0 | 25.0 |
|
| 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 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Perfect OpenMP + MPI + Pthread + Perfect Load Distribution | 1.00 | 1.09 | 1.27 | 1.63 | 2.35 | 3.78 | 5.20 | 6.65 |
| Scalability - Gap | 1.00 | 1.09 | 1.27 | 1.63 | 2.36 | 3.81 | 5.26 | 6.75 |
| No Scalar Integer | Potential Speedup | 3.06 | 3.06 | 3.06 | 3.06 | 3.05 | 3.04 | 3.04 | 3.02 |
| Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| FP Vectorised | Potential Speedup | 2.03 | 2.03 | 2.03 | 2.03 | 2.03 | 2.03 | 2.03 | 2.02 |
| Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Fully Vectorised | Potential Speedup | 5.13 | 5.13 | 5.12 | 5.12 | 5.11 | 5.09 | 5.08 | 5.06 |
| Nb Loops to get 80% | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Only FP Arithmetic | Potential Speedup | 2.32 | 2.32 | 2.32 | 2.32 | 2.32 | 2.32 | 2.32 | 2.31 |
| Nb Loops to get 80% | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Source Object | Issue |
| ▼kmeans-gcc-O3-vectorize– | |
| ▼main.cpp– | |
| ○ | -funroll-loops is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-O3-vectorize– | |
| ▼main.cpp– | |
| ○ | -funroll-loops is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-O3-vectorize– | |
| ▼main.cpp– | |
| ○ | -funroll-loops is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-O3-vectorize– | |
| ▼main.cpp– | |
| ○ | -funroll-loops is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-O3-vectorize– | |
| ▼main.cpp– | |
| ○ | -funroll-loops is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-O3-vectorize– | |
| ▼main.cpp– | |
| ○ | -funroll-loops is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-O3-vectorize– | |
| ▼main.cpp– | |
| ○ | -funroll-loops is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-O3-vectorize– | |
| ▼main.cpp– | |
| ○ | -funroll-loops is missing. |
| r0 | r1 | r2 | r3 | r4 | r5 | r6 | r7 |
| Experiment Name | K-Means scalability gcc-O3-vectorize 100000000 | K-Means scalability gcc-O3-vectorize 100000000 | K-Means scalability gcc-O3-vectorize 100000000 | K-Means scalability gcc-O3-vectorize 100000000 | K-Means scalability gcc-O3-vectorize 100000000 | K-Means scalability gcc-O3-vectorize 100000000 | K-Means scalability gcc-O3-vectorize 100000000 | K-Means scalability gcc-O3-vectorize 100000000 |
| Application | ./kmeans/kmeans-gcc-O3-vectorize | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| Timestamp | 2025-06-25 08:06:39 | 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-172-31-18-66 | 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_V1 | 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 6.8.0-1029-aws #31-Ubuntu SMP Wed Apr 23 18:20:04 UTC 2025 | 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_V1 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| Compilation Options |
kmeans-gcc-O3-vectorize: GNU C++14 14.2.0 -mlittle-endian -mabi=lp64 -mcpu=neoverse-v1+sm4+crc+aes+sha3 -g -O3 -std=c++14 -fno-omit-frame-pointer -fopenmp -ftree-vectorize | 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 | 48 | 64 |
| 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 | 64 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| MAQAO version | 2025.1.0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| MAQAO build | 1aa2a9a471b050a74c235cc16bddac6cbccb0136::20250625-092903 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| Comments | 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 | same as r0 |