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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) | 100.86 | 54.94 | 32.11 | 21.91 | 15.59 | 12.25 | 11.25 | 10.74 |
| Max (Thread Active Time) (s) | 100.61 | 54.76 | 31.89 | 20.70 | 14.95 | 12.19 | 11.18 | 10.66 |
| Average Active Time (s) | 100.61 | 50.31 | 25.19 | 12.91 | 6.40 | 3.23 | 2.16 | 1.62 |
| Activity Ratio (%) | 99.7 | 91.6 | 78.5 | 58.9 | 41.0 | 26.4 | 19.2 | 15.1 |
| Average number of active threads | 0.997 | 1.831 | 3.138 | 4.714 | 6.565 | 8.430 | 9.224 | 9.637 |
| Affinity Stability (%) | 100.0 | 99.6 | 99.0 | 98.2 | 97.4 | 96.7 | 96.4 | 96.2 |
| GFLOPS | 21.7 E-3 | 42.8 E-3 | 92.0 E-3 | 0.248 | 0.361 | 0.355 | 0.469 | 0.551 |
| Time in analyzed loops (%) | 100.0 | 100.0 | 100.0 | 100.0 | 99.9 | 99.8 | 99.7 | 99.6 |
| Time in analyzed innermost loops (%) | 94.2 | 94.1 | 94.0 | 92.0 | 93.0 | 92.1 | 91.9 | 92.4 |
| Time in user code (%) | 100 | 100.0 | 100.0 | 100.0 | 99.9 | 99.8 | 99.7 | 99.6 |
| Compilation Options Score (%) | 87.5 | 87.5 | 87.5 | 87.5 | 87.5 | 87.5 | 87.5 | 87.5 |
| Array Access Efficiency (%) | 41.7 | 41.7 | 41.7 | 41.7 | 41.7 | 41.7 | 41.7 | 41.7 |
|
| Potential Speedups |  |
| Perfect Flow Complexity | 2.93 | 2.92 | 2.91 | 2.78 | 2.84 | 2.80 | 2.79 | 2.81 |
| 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 | 1.60 | 2.34 | 3.78 | 5.18 | 6.61 |
| Scalability - Gap | 1.00 | 1.09 | 1.27 | 1.74 | 2.47 | 3.89 | 5.36 | 6.82 |
| No Scalar Integer | Potential Speedup | 3.27 | 3.27 | 3.27 | 3.28 | 3.26 | 3.27 | 3.27 | 3.25 |
| Nb Loops to get 80% | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| FP Vectorised | Potential Speedup | 1.48 | 1.48 | 1.48 | 1.49 | 1.48 | 1.49 | 1.49 | 1.48 |
| Nb Loops to get 80% | 1 | 1 | 1 | 2 | 1 | 2 | 2 | 1 |
| Fully Vectorised | Potential Speedup | 4.41 | 4.41 | 4.40 | 4.42 | 4.40 | 4.39 | 4.38 | 4.36 |
| Nb Loops to get 80% | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| Only FP Arithmetic | Potential Speedup | 1.63 | 1.63 | 1.63 | 1.64 | 1.64 | 1.64 | 1.64 | 1.63 |
| Nb Loops to get 80% | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Source Object | Issue |
| ▼kmeans-gcc-O3-all– | |
| ▼main.cpp– | |
| ○ | -O3 or -Ofast is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-O3-all– | |
| ▼main.cpp– | |
| ○ | -O3 or -Ofast is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-O3-all– | |
| ▼main.cpp– | |
| ○ | -O3 or -Ofast is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-O3-all– | |
| ▼main.cpp– | |
| ○ | -O3 or -Ofast is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-O3-all– | |
| ▼main.cpp– | |
| ○ | -O3 or -Ofast is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-O3-all– | |
| ▼main.cpp– | |
| ○ | -O3 or -Ofast is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-O3-all– | |
| ▼main.cpp– | |
| ○ | -O3 or -Ofast is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-O3-all– | |
| ▼main.cpp– | |
| ○ | -O3 or -Ofast is missing. |
| r0 | r1 | r2 | r3 | r4 | r5 | r6 | r7 |
| Experiment Name | K-Means scalability gcc-O3-all 100000000 | K-Means scalability gcc-O3-all 100000000 | K-Means scalability gcc-O3-all 100000000 | K-Means scalability gcc-O3-all 100000000 | K-Means scalability gcc-O3-all 100000000 | K-Means scalability gcc-O3-all 100000000 | K-Means scalability gcc-O3-all 100000000 | K-Means scalability gcc-O3-all 100000000 |
| Application | ./kmeans/kmeans-gcc-O3-all | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| Timestamp | 2025-06-25 08:11:28 | 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-all: 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 -funroll-loops -ffast-math 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 | 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 |