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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) | 189.65 | 100.42 | 55.82 | 33.52 | 22.37 | 18.11 |
Max (Thread Active Time) (s) | 189.20 | 100.16 | 55.67 | 33.41 | 22.28 | 18.01 |
Average Active Time (s) | 189.20 | 96.97 | 50.88 | 27.84 | 16.31 | 11.88 |
Activity Ratio (%) | 99.8 | 96.6 | 91.2 | 83.1 | 73.0 | 65.7 |
Average number of active threads | 0.998 | 1.931 | 3.647 | 6.645 | 11.668 | 17.054 |
Affinity Stability (%) | 100.0 | 99.9 | 99.6 | 99.3 | 98.9 | 98.6 |
GFLOPS | 3.322 | 6.273 | 11.285 | 18.791 | 28.155 | 34.763 |
Time in analyzed loops (%) | 100.0 | 97.5 | 92.9 | 84.9 | 72.5 | 61.3 |
Time in analyzed innermost loops (%) | 97.5 | 95.0 | 90.7 | 82.7 | 70.7 | 59.7 |
Time in user code (%) | 100.0 | 97.5 | 92.9 | 84.9 | 72.5 | 61.3 |
Compilation Options Score (%) | 16.7 | 16.7 | 16.7 | 16.7 | 16.7 | 16.7 |
Array Access Efficiency (%) | 96.0 | 96.0 | 96.0 | 96.0 | 96.1 | 96.0 |
|
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 | 1.18 | 1.41 | 1.88 | 2.47 |
Scalability - Gap | 1.00 | 1.06 | 1.18 | 1.41 | 1.89 | 2.48 |
No Scalar Integer | Potential Speedup | 1.25 | 1.24 | 1.23 | 1.20 | 1.17 | 1.14 |
Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 |
FP Vectorised | Potential Speedup | 2.29 | 2.22 | 2.10 | 1.92 | 1.69 | 1.53 |
Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 |
Fully Vectorised | Potential Speedup | 7.87 | 6.73 | 5.30 | 3.87 | 2.72 | 2.15 |
Nb Loops to get 80% | 2 | 2 | 2 | 2 | 2 | 1 |
Only FP Arithmetic | Potential Speedup | 1.69 | 1.66 | 1.61 | 1.53 | 1.42 | 1.33 |
Nb Loops to get 80% | 2 | 2 | 2 | 1 | 1 | 1 |
Source Object | Issue |
▼kmeans-clang-O3-ffast-math– | |
▼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-ffast-math– | |
▼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-ffast-math– | |
▼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-ffast-math– | |
▼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-ffast-math– | |
▼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-ffast-math– | |
▼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-ffast-math 100000000 | K-Means scalability clang-O3-ffast-math 100000000 | K-Means scalability clang-O3-ffast-math 100000000 | K-Means scalability clang-O3-ffast-math 100000000 | K-Means scalability clang-O3-ffast-math 100000000 | K-Means scalability clang-O3-ffast-math 100000000 |
Application | ./kmeans/kmeans-clang-O3-ffast-math | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Timestamp | 2025-06-27 16:30:13 | 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-ffast-math: 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 |