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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) | 124.68 | 67.96 | 39.61 | 24.00 | 20.76 |
| Max (Thread Active Time) (s) | 124.40 | 67.38 | 39.31 | 23.96 | 20.72 |
| Average Active Time (s) | 124.40 | 66.05 | 37.11 | 21.30 | 18.00 |
| Activity Ratio (%) | 99.8 | 97.2 | 93.7 | 88.8 | 86.8 |
| Average number of active threads | 0.998 | 1.944 | 3.748 | 7.100 | 8.674 |
| Affinity Stability (%) | 100.0 | 99.9 | 99.8 | 99.5 | 99.4 |
| GFLOPS | 5.053 | 9.269 | 15.903 | 26.243 | 30.337 |
| Time in analyzed loops (%) | 100.0 | 96.4 | 90.3 | 80.2 | 75.9 |
| Time in analyzed innermost loops (%) | 97.5 | 94.1 | 88.1 | 78.1 | 73.9 |
| Time in user code (%) | 100 | 96.4 | 90.3 | 80.2 | 75.9 |
| Compilation Options Score (%) | 16.7 | 16.7 | 16.7 | 16.7 | 16.7 |
| Array Access Efficiency (%) | 96.0 | 96.1 | 96.1 | 96.1 | 96.1 |
|
| Potential Speedups |  |
| Perfect Flow Complexity | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Perfect OpenMP + MPI + Pthread | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Perfect OpenMP + MPI + Pthread + Perfect Load Distribution | 1.00 | 1.06 | 1.17 | 1.40 | 1.52 |
| Scalability - Gap | 1.00 | 1.09 | 1.27 | 1.54 | 1.66 |
| No Scalar Integer | Potential Speedup | 1.25 | 1.24 | 1.22 | 1.19 | 1.18 |
| Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 |
| FP Vectorised | Potential Speedup | 2.29 | 2.19 | 2.04 | 1.83 | 1.75 |
| Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 |
| Fully Vectorised | Potential Speedup | 7.87 | 6.30 | 4.73 | 3.33 | 2.96 |
| Nb Loops to get 80% | 2 | 2 | 2 | 2 | 2 |
| Only FP Arithmetic | Potential Speedup | 1.69 | 1.65 | 1.58 | 1.49 | 1.45 |
| Nb Loops to get 80% | 2 | 2 | 2 | 1 | 1 |
| Source Object | Issue |
| ▼kmeans-clang-O3-all– | |
| ▼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-all– | |
| ▼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-all– | |
| ▼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-all– | |
| ▼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-all– | |
| ▼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 |
| Experiment Name | K-Means scalability clang-O3-all 100000000 | K-Means scalability clang-O3-all 100000000 | K-Means scalability clang-O3-all 100000000 | K-Means scalability clang-O3-all 100000000 | K-Means scalability clang-O3-all 100000000 |
| Application | ./kmeans/kmeans-clang-O3-all | same as r0 | same as r0 | same as r0 | same as r0 |
| Timestamp | 2025-06-26 12:13:32 | 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-clang-O3-all: clang version 20.1.6 | 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 |