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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) | 108.71 | 59.49 | 34.41 | 21.98 | 15.82 | 12.77 | 11.87 | 11.47 |
Max (Thread Active Time) (s) | 108.47 | 59.14 | 34.30 | 21.92 | 15.77 | 12.73 | 11.81 | 11.37 |
Average Active Time (s) | 108.47 | 54.62 | 27.36 | 13.80 | 7.05 | 3.72 | 2.68 | 2.20 |
Activity Ratio (%) | 99.8 | 91.8 | 79.5 | 62.8 | 44.5 | 29.2 | 22.6 | 19.2 |
Average number of active threads | 0.998 | 1.836 | 3.180 | 5.021 | 7.125 | 9.328 | 10.846 | 12.263 |
Affinity Stability (%) | 100.0 | 99.6 | 99.1 | 98.4 | 97.6 | 96.9 | 96.6 | 96.5 |
GFLOPS | 0.675 | 1.243 | 2.158 | 3.417 | 4.873 | 6.443 | 7.515 | 8.754 |
Time in analyzed loops (%) | 100.0 | 100.0 | 100.0 | 100.0 | 99.9 | 99.9 | 99.8 | 99.7 |
Time in analyzed innermost loops (%) | 14.6 | 14.6 | 14.4 | 14.4 | 14.1 | 13.8 | 13.2 | 12.7 |
Time in user code (%) | 100 | 100.0 | 100.0 | 100.0 | 99.9 | 99.9 | 99.8 | 99.7 |
Compilation Options Score (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
Array Access Efficiency (%) | 41.7 | 41.7 | 41.7 | 41.7 | 41.7 | 41.7 | 41.7 | 41.7 |
|
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 | 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 | 1.08 | 1.25 | 1.59 | 2.24 | 3.42 | 4.41 | 5.19 |
Scalability - Gap | 1.00 | 1.09 | 1.27 | 1.62 | 2.33 | 3.76 | 5.24 | 6.76 |
No Scalar Integer | Potential Speedup | 3.18 | 3.18 | 3.18 | 3.18 | 3.19 | 3.20 | 3.21 | 3.23 |
Nb Loops to get 80% | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
FP Vectorised | Potential Speedup | 1.43 | 1.43 | 1.43 | 1.43 | 1.43 | 1.43 | 1.43 | 1.44 |
Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
Fully Vectorised | Potential Speedup | 4.34 | 4.34 | 4.33 | 4.33 | 4.33 | 4.32 | 4.30 | 4.30 |
Nb Loops to get 80% | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
Only FP Arithmetic | Potential Speedup | 1.57 | 1.57 | 1.57 | 1.57 | 1.56 | 1.56 | 1.55 | 1.54 |
Nb Loops to get 80% | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
Source Object | Issue |
▼kmeans-gcc-O3-funroll– | |
▼main.cpp– | |
○ | |
Source Object | Issue |
▼kmeans-gcc-O3-funroll– | |
▼main.cpp– | |
○ | |
Source Object | Issue |
▼kmeans-gcc-O3-funroll– | |
▼main.cpp– | |
○ | |
Source Object | Issue |
▼kmeans-gcc-O3-funroll– | |
▼main.cpp– | |
○ | |
Source Object | Issue |
▼kmeans-gcc-O3-funroll– | |
▼main.cpp– | |
○ | |
Source Object | Issue |
▼kmeans-gcc-O3-funroll– | |
▼main.cpp– | |
○ | |
Source Object | Issue |
▼kmeans-gcc-O3-funroll– | |
▼main.cpp– | |
○ | |
Source Object | Issue |
▼kmeans-gcc-O3-funroll– | |
▼main.cpp– | |
○ | |
| r0 | r1 | r2 | r3 | r4 | r5 | r6 | r7 |
Experiment Name | K-Means scalability gcc-O3-funroll 100000000 | K-Means scalability gcc-O3-funroll 100000000 | K-Means scalability gcc-O3-funroll 100000000 | K-Means scalability gcc-O3-funroll 100000000 | K-Means scalability gcc-O3-funroll 100000000 | K-Means scalability gcc-O3-funroll 100000000 | K-Means scalability gcc-O3-funroll 100000000 | K-Means scalability gcc-O3-funroll 100000000 |
Application | ./kmeans/kmeans-gcc-O3-funroll | 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 14:40:28 | 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 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-O3-funroll: GNU C++14 14.2.0 -mlittle-endian -mabi=lp64 -mcpu=neoverse-v1+sm4+crc+aes+sha3+nossbs -g -O3 -std=c++14 -fno-omit-frame-pointer -fopenmp -funroll-loops | 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 |