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- r0: run_1_thread
- r1: run_2_threads
- r2: run_4_threads
- r3: run_8_threads
- r4: run_10_threads
| Metric | r0 | r1 | r2 | r3 | r4 |
|---|
| Total Time (s) | 328.84 | 216.17 | 157.33 | 127.43 | 121.89 |
| Max (Thread Active Time) (s) | 327.21 | 215.36 | 156.86 | 127.10 | 121.59 |
| Average Active Time (s) | 327.21 | 215.33 | 156.83 | 127.06 | 121.52 |
| Activity Ratio (%) | 99.5 | 99.6 | 99.7 | 99.7 | 99.7 |
| Average number of active threads | 0.995 | 1.992 | 3.987 | 7.977 | 9.970 |
| Affinity Stability (%) | 73.1 | 57.9 | 42.3 | 28.9 | 25.4 |
| GFLOPS | 2.657 | 5.236 | 10.304 | 20.306 | 25.065 |
| Time in analyzed loops (%) | 100.0 | 98.5 | 96.8 | 95.4 | 94.2 |
| Time in analyzed innermost loops (%) | 98.8 | 97.4 | 95.7 | 94.2 | 93.1 |
| Time in user code (%) | 100 | 98.5 | 96.8 | 95.3 | 94.2 |
| Compilation Options Score (%) | 75.0 | 75.0 | 75.0 | 75.0 | 75.0 |
| Array Access Efficiency (%) | 100 | 100 | 100 | 100 | 100 |
|
| Potential Speedups |  |
| Perfect Flow Complexity | 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 |
| Perfect OpenMP/MPI/Pthread/TBB + Perfect Load Distribution | 1.00 | 1.02 | 1.03 | 1.05 | 1.06 |
| Scalability - Gap | 1.00 | 1.31 | 1.91 | 3.10 | 3.71 |
| No Scalar Integer | Potential Speedup | 1.06 | 1.05 | 1.05 | 1.05 | 1.05 |
| Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 |
| FP Vectorised | Potential Speedup | 2.58 | 2.52 | 2.45 | 2.40 | 2.36 |
| Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 |
| Fully Vectorised | Potential Speedup | 8.43 | 7.57 | 6.82 | 6.27 | 5.88 |
| Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 |
| Only FP Arithmetic | Potential Speedup | 1.32 | 1.31 | 1.31 | 1.30 | 1.29 |
| Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 |
| Source Object | Issue |
| ▼kmeans-gcc-O3– | |
| ▼main.cpp– | |
| ○ | -funroll-loops is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-O3– | |
| ▼main.cpp– | |
| ○ | -funroll-loops is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-O3– | |
| ▼main.cpp– | |
| ○ | -funroll-loops is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-O3– | |
| ▼main.cpp– | |
| ○ | -funroll-loops is missing. |
| Source Object | Issue |
| ▼kmeans-gcc-O3– | |
| ▼main.cpp– | |
| ○ | -funroll-loops is missing. |
| r0 | r1 | r2 | r3 | r4 |
| Experiment Name | K-Means scalability gcc-O3 100000000 | K-Means scalability gcc-O3 100000000 | K-Means scalability gcc-O3 100000000 | K-Means scalability gcc-O3 100000000 | K-Means scalability gcc-O3 100000000 |
| Application | ./kmeans/kmeans-gcc-O3 | same as r0 | same as r0 | same as r0 | same as r0 |
| Timestamp | 2025-08-12 12:31:27 | 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 |
| Machine | otterfall | 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 |
| Micro Architecture | SKYLAKE | same as r0 | same as r0 | same as r0 | same as r0 |
| Model Name | Intel(R) Xeon(R) Silver 4210R CPU @ 2.40GHz | same as r0 | same as r0 | same as r0 | same as r0 |
| Cache Size | 14080 KB | same as r0 | same as r0 | same as r0 | same as r0 |
| Number of Cores | 10 | same as r0 | same as r0 | same as r0 | same as r0 |
| Maximal Frequency | 2.4 GHz | same as r0 | same as r0 | same as r0 | same as r0 |
| OS Version | Linux 6.15.3-arch1-1 #1 SMP PREEMPT_DYNAMIC Thu, 19 Jun 2025 14:41:19 +0000 | 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 |
| Micro Architecture used during static analysis | SKYLAKE | same as r0 | same as r0 | same as r0 | same as r0 |
| Compilation Options |
kmeans-gcc-O3: GNU C++14 13.3.1 20241125 -march=cascadelake -mtune=cascadelake -g -O3 -std=c++14 -fno-omit-frame-pointer -fopenmp | 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 |
| Number of threads observed | 1 | 2 | 4 | 8 | 10 |
| Frequency Driver | intel_pstate | same as r0 | same as r0 | same as r0 | same as r0 |
| Frequency Governor | powersave | 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 |
| Hyperthreading | off | 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 |
| Number of cores per socket | 10 | 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 |
| MAQAO build | 7076967d3502a2d74409cf402702d5c5c2847726::20250729-175200 | same as r0 | same as r0 | same as r0 | same as r0 |
| Comments | Intel Xeon 4210R (Cascade Lake CPU), 1-10 threads runs | same as r0 | same as r0 | same as r0 | same as r0 |