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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) | 306.62 | 206.45 | 152.87 | 125.80 | 112.02 | 107.08 |
| Max (Thread Active Time) (s) | 304.02 | 156.85 | 79.74 | 40.90 | 21.22 | 14.07 |
| Average Active Time (s) | 304.02 | 156.58 | 79.58 | 40.80 | 21.14 | 13.94 |
| Activity Ratio (%) | 99.2 | 75.9 | 52.1 | 32.4 | 18.9 | 13.0 |
| Average number of active threads | 0.992 | 1.517 | 2.082 | 2.595 | 3.019 | 3.386 |
| Affinity Stability (%) | 69.7 | 53.0 | 36.7 | 23.0 | 13.6 | 9.58 |
| GFLOPS | 3.013 | 4.509 | 6.046 | 7.286 | 8.057 | 8.184 |
| Time in analyzed loops (%) | 100.0 | 97.8 | 95.5 | 92.5 | 88.4 | 81.6 |
| Time in analyzed innermost loops (%) | 99.2 | 96.9 | 94.8 | 91.8 | 87.7 | 81.0 |
| Time in user code (%) | 100 | 97.8 | 95.5 | 92.5 | 88.4 | 81.7 |
| Compilation Options Score (%) | 100 | 100 | 100 | 100 | 100 | 100 |
| Array Access Efficiency (%) | Not Available | Not Available | Not Available | Not Available | Not Available | Not Available |
|
| Potential Speedups |  |
| Perfect Flow Complexity | 5.62 | 5.08 | 4.65 | 4.15 | 3.59 | 2.88 |
| Perfect OpenMP/MPI/Pthread/TBB | 1.00 | 1.00 | 1.00 | 1.01 | 1.01 | 1.00 |
| Perfect OpenMP/MPI/Pthread/TBB + Perfect Load Distribution | 1.00 | 1.02 | 1.05 | 1.08 | 1.13 | 1.23 |
| Scalability - Gap | 1.00 | 1.35 | 1.99 | 3.28 | 5.85 | 9.08 |
| No Scalar Integer | Potential Speedup | 1.10 | 1.09 | 1.09 | 1.09 | 1.08 | 1.07 |
| Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 |
| FP Vectorised | Potential Speedup | 2.13 | 2.07 | 2.02 | 1.96 | 1.87 | 1.73 |
| Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 |
| Fully Vectorised | Potential Speedup | 5.84 | 5.27 | 4.79 | 4.26 | 3.66 | 2.92 |
| Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 |
| Only FP Arithmetic | Potential Speedup | 1.41 | 1.40 | 1.38 | 1.37 | 1.34 | 1.30 |
| Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 |
| Source Object | Issue |
| ▼kmeans-icpx-O2– | |
| ▼main.cpp– | |
| ○ | |
| Source Object | Issue |
| ▼kmeans-icpx-O2– | |
| ▼main.cpp– | |
| ○ | |
| Source Object | Issue |
| ▼kmeans-icpx-O2– | |
| ▼main.cpp– | |
| ○ | |
| Source Object | Issue |
| ▼kmeans-icpx-O2– | |
| ▼main.cpp– | |
| ○ | |
| Source Object | Issue |
| ▼kmeans-icpx-O2– | |
| ▼main.cpp– | |
| ○ | |
| Source Object | Issue |
| ▼kmeans-icpx-O2– | |
| ▼main.cpp– | |
| ○ | |
| r0 | r1 | r2 | r3 | r4 | r5 |
| Experiment Name | K-Means scalability icpx-O2 100000000 | K-Means scalability icpx-O2 100000000 | K-Means scalability icpx-O2 100000000 | K-Means scalability icpx-O2 100000000 | K-Means scalability icpx-O2 100000000 | K-Means scalability icpx-O2 100000000 |
| Application | ./kmeans/kmeans-icpx-O2 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
| Timestamp | 2025-08-04 22:20:36 | 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-O2: 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 -O2 -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 |