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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) | 102.29 | 56.37 | 33.49 | 21.54 | 18.99 |
| Max (Thread Active Time) (s) | 101.92 | 55.83 | 33.21 | 21.45 | 18.92 |
| Average Active Time (s) | 101.92 | 54.49 | 31.02 | 18.45 | 15.81 |
| Activity Ratio (%) | 99.6 | 96.7 | 92.6 | 85.7 | 83.3 |
| Average number of active threads | 0.996 | 1.933 | 3.705 | 6.852 | 8.326 |
| Affinity Stability (%) | 100.0 | 99.9 | 99.7 | 99.5 | 99.3 |
| GFLOPS | 6.158 | 11.175 | 18.808 | 29.241 | 33.160 |
| Time in analyzed loops (%) | 100.0 | 95.6 | 88.4 | 76.5 | 71.7 |
| Time in analyzed innermost loops (%) | 96.3 | 92.1 | 85.0 | 73.8 | 69.1 |
| Time in user code (%) | 100 | 95.6 | 88.4 | 76.5 | 71.7 |
| Compilation Options Score (%) | 100 | 100 | 100 | 100 | 100 |
| Array Access Efficiency (%) | 62.7 | 61.9 | 61.8 | 62.4 | 62.9 |
|
| Potential Speedups |  |
| Perfect Flow Complexity | 3.50 | 3.19 | 2.74 | 2.23 | 2.07 |
| Perfect OpenMP + MPI + Pthread | 1.00 | 1.00 | 1.00 | 1.03 | 1.04 |
| Perfect OpenMP + MPI + Pthread + Perfect Load Distribution | 1.00 | 1.07 | 1.21 | 1.52 | 1.67 |
| Scalability - Gap | 1.00 | 1.10 | 1.31 | 1.68 | 1.86 |
| No Scalar Integer | Potential Speedup | 1.27 | 1.26 | 1.23 | 1.19 | 1.18 |
| Nb Loops to get 80% | 2 | 2 | 2 | 2 | 2 |
| FP Vectorised | Potential Speedup | 1.97 | 1.89 | 1.77 | 1.61 | 1.55 |
| Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 |
| Fully Vectorised | Potential Speedup | 6.73 | 5.37 | 4.04 | 2.87 | 2.57 |
| Nb Loops to get 80% | 4 | 3 | 3 | 3 | 2 |
| Only FP Arithmetic | Potential Speedup | 1.62 | 1.58 | 1.51 | 1.41 | 1.38 |
| Nb Loops to get 80% | 2 | 2 | 2 | 2 | 2 |
| 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 |
| 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 |
| Application | ./kmeans/kmeans-icpx-Ofast | same as r0 | same as r0 | same as r0 | same as r0 |
| Timestamp | 2025-06-25 17:02:19 | 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 | 3.2 GHz | same as r0 | same as r0 | same as r0 | same as r0 |
| OS Version | Linux 6.12.1-arch1-1 #1 SMP PREEMPT_DYNAMIC Fri, 22 Nov 2024 16:04:27 +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-icpx-Ofast: clang based Intel(R) oneAPI DPC++/C++ Compiler 2024.2.1 (2024.2.1.20240711) --driver-mode=g++ --intel -I . -MMD -MP -march=native -std=c++14 -g -fiopenmp -Ofast -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 |
| 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 | performance | 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 | 2025.1.0 | same as r0 | same as r0 | same as r0 | same as r0 |
| MAQAO build | 1cd8232d3b2009bc695f526f903b266bda9bb996::20250623-181852 | same as r0 | same as r0 | same as r0 | same as r0 |
| Comments | Intel Xeon 42104R (Cascade Lake CPU), 1-10 threads runs | same as r0 | same as r0 | same as r0 | same as r0 |