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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_26_threads
| Metric | r0 | r1 | r2 | r3 | r4 | r5 |
|---|
| Total Time (s) | 193.07 | 102.04 | 56.55 | 33.81 | 22.46 | 18.13 |
| Max (Thread Active Time) (s) | 192.59 | 101.76 | 56.39 | 33.70 | 22.36 | 18.03 |
| Average Active Time (s) | 192.59 | 98.65 | 51.72 | 28.26 | 16.51 | 12.01 |
| Activity Ratio (%) | 99.8 | 96.7 | 91.5 | 83.6 | 73.6 | 66.3 |
| Average number of active threads | 0.998 | 1.933 | 3.659 | 6.686 | 11.765 | 17.217 |
| Affinity Stability (%) | 100.0 | 99.9 | 99.6 | 99.3 | 98.9 | 98.5 |
| GFLOPS | 3.263 | 6.174 | 11.140 | 18.632 | 28.049 | 34.730 |
| Time in analyzed loops (%) | 100.0 | 97.6 | 93.0 | 85.1 | 72.8 | 61.7 |
| Time in analyzed innermost loops (%) | 97.5 | 95.3 | 90.7 | 83.1 | 71.0 | 60.2 |
| Time in user code (%) | 100 | 97.6 | 93.0 | 85.2 | 72.8 | 61.7 |
| Compilation Options Score (%) | 16.7 | 16.7 | 16.7 | 16.7 | 16.7 | 16.7 |
| Array Access Efficiency (%) | 96.1 | 96.2 | 96.1 | 96.2 | 96.2 | 96.1 |
|
| Potential Speedups |  |
| Perfect Flow Complexity | 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 |
| Perfect OpenMP + MPI + Pthread + Perfect Load Distribution | 1.00 | 1.06 | 1.17 | 1.40 | 1.86 | 2.43 |
| Scalability - Gap | 1.00 | 1.06 | 1.17 | 1.40 | 1.86 | 2.44 |
| No Scalar Integer | Potential Speedup | 1.26 | 1.25 | 1.23 | 1.21 | 1.17 | 1.14 |
| Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 |
| FP Vectorised | Potential Speedup | 2.33 | 2.26 | 2.13 | 1.95 | 1.71 | 1.54 |
| Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 |
| Fully Vectorised | Potential Speedup | 9.98 | 8.19 | 6.14 | 4.28 | 2.90 | 2.25 |
| Nb Loops to get 80% | 3 | 2 | 2 | 2 | 2 | 1 |
| Only FP Arithmetic | Potential Speedup | 1.37 | 1.36 | 1.34 | 1.30 | 1.24 | 1.20 |
| Nb Loops to get 80% | 2 | 2 | 2 | 2 | 2 | 2 |
| Source Object | Issue |
| ▼kmeans-clang-O3– | |
| ▼main.cpp– | |
| ○ | -g is missing for some functions (possibly ones added by the compiler), but debug locations are available. Some analysis may be inaccurate. |
| ○ | -O2, -O3 or -Ofast is missing. |
| ○ | -march=(target) is missing. |
| Source Object | Issue |
| ▼kmeans-clang-O3– | |
| ▼main.cpp– | |
| ○ | -g is missing for some functions (possibly ones added by the compiler), but debug locations are available. Some analysis may be inaccurate. |
| ○ | -O2, -O3 or -Ofast is missing. |
| ○ | -march=(target) is missing. |
| Source Object | Issue |
| ▼kmeans-clang-O3– | |
| ▼main.cpp– | |
| ○ | -g is missing for some functions (possibly ones added by the compiler), but debug locations are available. Some analysis may be inaccurate. |
| ○ | -O2, -O3 or -Ofast is missing. |
| ○ | -march=(target) is missing. |
| Source Object | Issue |
| ▼kmeans-clang-O3– | |
| ▼main.cpp– | |
| ○ | -g is missing for some functions (possibly ones added by the compiler), but debug locations are available. Some analysis may be inaccurate. |
| ○ | -O2, -O3 or -Ofast is missing. |
| ○ | -march=(target) is missing. |
| Source Object | Issue |
| ▼kmeans-clang-O3– | |
| ▼main.cpp– | |
| ○ | -g is missing for some functions (possibly ones added by the compiler), but debug locations are available. Some analysis may be inaccurate. |
| ○ | -O2, -O3 or -Ofast is missing. |
| ○ | -march=(target) is missing. |
| Source Object | Issue |
| ▼kmeans-clang-O3– | |
| ▼main.cpp– | |
| ○ | -g is missing for some functions (possibly ones added by the compiler), but debug locations are available. Some analysis may be inaccurate. |
| ○ | -O2, -O3 or -Ofast is missing. |
| ○ | -march=(target) is missing. |
| r0 | r1 | r2 | r3 | r4 | r5 |
| Experiment Name | K-Means scalability clang-O3 100000000 | K-Means scalability clang-O3 100000000 | K-Means scalability clang-O3 100000000 | K-Means scalability clang-O3 100000000 | K-Means scalability clang-O3 100000000 | K-Means scalability clang-O3 100000000 |
| Application | ./kmeans/kmeans-clang-O3 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| Timestamp | 2025-06-27 16:14:37 | 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 |
| Machine | skylake | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| Architecture | x86_64 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| Micro Architecture | SKYLAKE | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| Model Name | Intel(R) Xeon(R) Platinum 8170 CPU @ 2.10GHz | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| Cache Size | 36608 KB | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| Number of Cores | 26 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| Maximal Frequency | 2.1 GHz | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| OS Version | Linux 6.10.10-arch1-1 #1 SMP PREEMPT_DYNAMIC Thu, 12 Sep 2024 17:21:02 +0000 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| Architecture used during static analysis | x86_64 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| Micro Architecture used during static analysis | SKYLAKE | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| Compilation Options |
kmeans-clang-O3: clang version 20.1.6 | 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 |
| Number of threads observed | 1 | 2 | 4 | 8 | 16 | 26 |
| Frequency Driver | intel_cpufreq | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| Frequency Governor | performance | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| Huge Pages | always | 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 |
| Number of sockets | 2 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| Number of cores per socket | 26 | 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 |
| MAQAO build | e913a471001afb562449956a906221b5bfa8ea0d::20250617-163738 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| Comments | Intel Xeon Platinum 8170 (Skylake CPU), 1-26 threads runs | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |