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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) | 299.17 | 198.39 | 145.43 | 119.02 | 113.79 |
Max (Thread Active Time) (s) | 298.51 | 197.60 | 144.66 | 118.24 | 113.01 |
Average Active Time (s) | 298.51 | 152.88 | 77.56 | 39.90 | 32.34 |
Activity Ratio (%) | 99.8 | 77.1 | 53.3 | 33.5 | 28.4 |
Average number of active threads | 0.998 | 1.541 | 2.133 | 2.682 | 2.842 |
Affinity Stability (%) | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
GFLOPS | 2.106 | 3.176 | 4.333 | 5.294 | 5.538 |
Time in analyzed loops (%) | 71.6 | 70.0 | 69.0 | 68.5 | 68.5 |
Time in analyzed innermost loops (%) | 70.2 | 68.5 | 67.6 | 67.1 | 67.2 |
Time in user code (%) | 71.6 | 70.0 | 69.0 | 68.5 | 68.5 |
Compilation Options Score (%) | 16.7 | 16.7 | 16.7 | 16.7 | 16.7 |
Array Access Efficiency (%) | 97.8 | 97.8 | 97.7 | 96.6 | 95.9 |
|
Potential Speedups |  |
Perfect Flow Complexity | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
Perfect OpenMP/MPI/Pthread/TBB | 1.00 | 1.01 | 1.02 | 1.02 | 1.02 |
Perfect OpenMP/MPI/Pthread/TBB + Perfect Load Distribution | 1.00 | 1.30 | 1.91 | 3.07 | 3.64 |
Scalability - Gap | 1.00 | 1.33 | 1.94 | 3.18 | 3.80 |
No Scalar Integer | Potential Speedup | 1.17 | 1.16 | 1.16 | 1.16 | 1.16 |
Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 |
FP Vectorised | Potential Speedup | 1.72 | 1.69 | 1.68 | 1.65 | 1.64 |
Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 |
Fully Vectorised | Potential Speedup | 2.81 | 2.70 | 2.64 | 2.60 | 2.61 |
Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 |
Only FP Arithmetic | Potential Speedup | 1.22 | 1.22 | 1.22 | 1.22 | 1.23 |
Nb Loops to get 80% | 1 | 1 | 1 | 2 | 2 |
Source Object | Issue |
▼kmeans-clang-O3– | |
▼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– | |
▼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– | |
▼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– | |
▼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– | |
▼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 100000000 | K-Means scalability clang-O3 100000000 | K-Means scalability clang-O3 100000000 | K-Means scalability clang-O3 100000000 | K-Means scalability clang-O3 100000000 |
Application | ./kmeans/kmeans-clang-O3 | same as r0 | same as r0 | same as r0 | same as r0 |
Timestamp | 2025-07-11 12:05:12 | 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-clang-O3: 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 | 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 | 2025.1.1 | same as r0 | same as r0 | same as r0 | same as r0 |
MAQAO build | f9f67b53e0b122e524ba7e0ec048f26161e30355::20250709-173036 | 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 |