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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) | 150.79 | 121.78 | 107.28 | 100.09 | 96.51 | 96.87 |
| Max (Thread Active Time) (s) | 148.68 | 74.36 | 37.27 | 18.71 | 9.28 | 6.05 |
| Average Active Time (s) | 148.68 | 51.77 | 20.31 | 8.82 | 4.14 | 2.61 |
| Activity Ratio (%) | 98.6 | 68.6 | 53.7 | 46.4 | 43.2 | 42.8 |
| Average number of active threads | 0.986 | 0.850 | 0.757 | 0.705 | 0.686 | 0.701 |
| Affinity Stability (%) | 38.3 | 38.4 | 38.5 | 38.7 | 39.1 | 39.8 |
| GFLOPS | 14.912 | 18.474 | 20.960 | 22.378 | 22.615 | 21.474 |
| Time in analyzed loops (%) | 100.0 | 100.0 | 99.9 | 99.7 | 98.6 | 99.2 |
| Time in analyzed innermost loops (%) | 90.5 | 90.1 | 89.9 | 90.3 | 88.9 | 90.2 |
| Time in user code (%) | 100 | 100.0 | 99.9 | 99.7 | 98.6 | 99.2 |
| Compilation Options Score (%) | 100 | 100 | 100 | 100 | 100 | 100 |
| Array Access Efficiency (%) | 100.0 | 100.0 | 99.9 | 99.5 | 98.4 | 93.7 |
|
| Potential Speedups | |
| Perfect Flow Complexity | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Perfect OpenMP/MPI/Pthread/TBB | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.01 |
| Perfect OpenMP/MPI/Pthread/TBB + Perfect Load Distribution | 1.00 | 1.44 | 1.84 | 2.13 | 2.27 | 2.34 |
| Scalability - Gap | 1.00 | 1.62 | 2.85 | 5.31 | 10.24 | 16.70 |
| No Scalar Integer | Potential Speedup | 1.13 | 1.13 | 1.13 | 1.13 | 1.13 | 1.14 |
| Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 |
| FP Vectorised | Potential Speedup | 1.55 | 1.54 | 1.54 | 1.54 | 1.51 | 1.45 |
| Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 |
| Fully Vectorised | Potential Speedup | 2.31 | 2.31 | 2.31 | 2.31 | 2.31 | 2.48 |
| Nb Loops to get 80% | 2 | 2 | 2 | 2 | 2 | 3 |
| Only FP Arithmetic | Potential Speedup | 1.57 | 1.58 | 1.58 | 1.57 | 1.59 | 1.65 |
| Nb Loops to get 80% | 2 | 2 | 2 | 2 | 2 | 3 |
| Source Object | Issue |
|---|
| ▼kmeans-icpx-Ofast– | |
| ▼main.cpp– | |
| ○ | |
| Source Object | Issue |
|---|
| ▼kmeans-icpx-Ofast– | |
| ▼main.cpp– | |
| ○ | |
| Source Object | Issue |
|---|
| ▼kmeans-icpx-Ofast– | |
| ▼main.cpp– | |
| ○ | |
| Source Object | Issue |
|---|
| ▼kmeans-icpx-Ofast– | |
| ▼main.cpp– | |
| ○ | |
| Source Object | Issue |
|---|
| ▼kmeans-icpx-Ofast– | |
| ▼main.cpp– | |
| ○ | |
| Source Object | Issue |
|---|
| ▼kmeans-icpx-Ofast– | |
| ▼main.cpp– | |
| ○ | |
| r0 | r1 | r2 | r3 | r4 | r5 |
|---|
| Experiment Name | K-Means scalability icpx-Ofast 100000000 | K-Means scalability icpx-Ofast 100000000 | K-Means scalability icpx-Ofast 100000000 | K-Means scalability icpx-Ofast 100000000 | K-Means scalability icpx-Ofast 100000000 | K-Means scalability icpx-Ofast 100000000 |
|---|
| Application | ./kmeans/kmeans-icpx-Ofast | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
|---|
| Timestamp | 2025-08-12 16:54:37 | 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 6.15.5-arch1-1 #1 SMP PREEMPT_DYNAMIC Sun, 06 Jul 2025 11:14:36 +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-icpx-Ofast: clang based Intel(R) oneAPI DPC++/C++ Compiler 2024.2.1 (2024.2.1.20240711) --driver-mode=g++ --intel -I . -MMD -MP -Wall -std=c++14 -g -fno-omit-frame-pointer -fiopenmp -Ofast -x Host -mtune=native -c -o main.o main.cpp -fveclib=SVML -faltmathlib=SVML -fheinous-gnu-extensions | 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 | schedutil | 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 | 2025.1.2 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
|---|
| MAQAO build | 7076967d3502a2d74409cf402702d5c5c2847726::20250729-175200 | 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 |
|---|
