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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) | 162.02 | 87.86 | 50.17 | 29.86 | 19.91 | 14.99 | 13.48 | 12.71 |
| Max (Thread Active Time) (s) | 161.80 | 86.95 | 49.29 | 29.42 | 19.55 | 14.66 | 13.16 | 12.43 |
| Average Active Time (s) | 161.80 | 82.29 | 42.26 | 20.89 | 10.67 | 5.62 | 4.07 | 3.28 |
| Activity Ratio (%) | 99.9 | 93.7 | 84.2 | 69.9 | 53.6 | 37.5 | 30.2 | 25.8 |
| Average number of active threads | 0.999 | 1.873 | 3.369 | 5.595 | 8.575 | 11.988 | 14.479 | 16.501 |
| Affinity Stability (%) | 100.0 | 99.8 | 99.4 | 98.7 | 98.0 | 97.3 | 97.0 | 96.8 |
| GFLOPS | 0.679 | 1.275 | 2.296 | 3.819 | 5.869 | 8.266 | 10.013 | 11.485 |
| Time in analyzed loops (%) | 100.0 | 100.0 | 100.0 | 100.0 | 99.9 | 99.9 | 99.9 | 99.8 |
| Time in analyzed innermost loops (%) | 98.8 | 98.6 | 98.4 | 98.7 | 98.5 | 98.5 | 98.3 | 98.2 |
| Time in user code (%) | 100 | 100 | 100.0 | 100.0 | 100.0 | 99.9 | 99.8 | 99.8 |
| Compilation Options Score (%) | 62.5 | 62.5 | 62.5 | 62.5 | 62.5 | 62.5 | 62.5 | 62.5 |
| Array Access Efficiency (%) | 95.1 | 95.0 | 95.1 | 95.2 | 95.2 | 95.4 | 95.6 | 95.9 |
|
| 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 | 1.06 | 1.17 | 1.41 | 1.83 | 2.61 | 3.24 | 3.80 |
| Scalability - Gap | 1.00 | 1.08 | 1.24 | 1.47 | 1.97 | 2.96 | 3.99 | 5.02 |
| No Scalar Integer | Potential Speedup | 1.39 | 1.39 | 1.39 | 1.39 | 1.39 | 1.39 | 1.38 | 1.38 |
| Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| FP Vectorised | Potential Speedup | 1.35 | 1.35 | 1.35 | 1.35 | 1.35 | 1.35 | 1.35 | 1.35 |
| Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Fully Vectorised | Potential Speedup | 4.04 | 4.04 | 4.04 | 4.04 | 4.04 | 4.03 | 4.02 | 4.02 |
| Nb Loops to get 80% | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Only FP Arithmetic | Potential Speedup | 1.42 | 1.41 | 1.41 | 1.41 | 1.41 | 1.41 | 1.41 | 1.40 |
| Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Source Object | Issue |
| ▼kmeans-gcc-Ofast– | |
| ▼main.cpp– | |
| ○ | -O3 or -Ofast is missing. |
| ○ | -funroll-loops is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-Ofast– | |
| ▼main.cpp– | |
| ○ | -O3 or -Ofast is missing. |
| ○ | -funroll-loops is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-Ofast– | |
| ▼main.cpp– | |
| ○ | -O3 or -Ofast is missing. |
| ○ | -funroll-loops is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-Ofast– | |
| ▼main.cpp– | |
| ○ | -O3 or -Ofast is missing. |
| ○ | -funroll-loops is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-Ofast– | |
| ▼main.cpp– | |
| ○ | -O3 or -Ofast is missing. |
| ○ | -funroll-loops is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-Ofast– | |
| ▼main.cpp– | |
| ○ | -O3 or -Ofast is missing. |
| ○ | -funroll-loops is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-Ofast– | |
| ▼main.cpp– | |
| ○ | -O3 or -Ofast is missing. |
| ○ | -funroll-loops is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-Ofast– | |
| ▼main.cpp– | |
| ○ | -O3 or -Ofast is missing. |
| ○ | -funroll-loops is missing. |
| r0 | r1 | r2 | r3 | r4 | r5 | r6 | r7 |
| Experiment Name | K-Means scalability gcc-Ofast 100000000 | K-Means scalability gcc-Ofast 100000000 | K-Means scalability gcc-Ofast 100000000 | K-Means scalability gcc-Ofast 100000000 | K-Means scalability gcc-Ofast 100000000 | K-Means scalability gcc-Ofast 100000000 | K-Means scalability gcc-Ofast 100000000 | K-Means scalability gcc-Ofast 100000000 |
| Application | ./kmeans/kmeans-gcc-Ofast | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| Timestamp | 2025-06-18 15:35:50 | 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 5.15.0-1084-aws #91~20.04.1-Ubuntu SMP Fri May 2 07:00:04 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-Ofast: GNU C++14 14.2.0 -mlittle-endian -mabi=lp64 -mcpu=neoverse-v1+sm4+crc+aes+sha3+nossbs -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 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 | 5a08e15f7093c6a53f62c4cc8eb132dbb633c400::20250616-180837 | 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 |