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- r0: run_2_threads
- r1: run_4_threads
- r2: run_8_threads
- r3: run_16_threads
- r4: run_26_threads
- r5: run_52_threads
Metric | r0 | r1 | r2 | r3 | r4 | r5 |
---|
Total Time (s) | 990.95 | 505.04 | 261.54 | 136.91 | 89.37 | 52.16 |
Max (Thread Active Time) (s) | 990.22 | 504.48 | 260.97 | 136.34 | 88.73 | 51.49 |
Average Active Time (s) | 989.95 | 504.24 | 260.70 | 136.07 | 88.50 | 51.31 |
Activity Ratio (%) | 99.9 | 99.9 | 99.8 | 99.7 | 99.6 | 99.3 |
Average number of active threads | 1.998 | 3.994 | 7.974 | 15.902 | 25.747 | 51.149 |
Affinity Stability (%) | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
Time in analyzed loops (%) | 99.5 | 98.7 | 96.5 | 93.5 | 89.7 | 82.9 |
Time in analyzed innermost loops (%) | 37.4 | 37.4 | 36.9 | 36.7 | 36.3 | 34.9 |
Time in user code (%) | 99.5 | 98.7 | 96.5 | 93.5 | 89.8 | 83.0 |
Compilation Options Score (%) | 100 | 100 | 100 | 100 | 100 | 100 |
Array Access Efficiency (%) | 53.1 | 53.3 | 53.5 | 54.3 | 55.2 | 56.3 |
|
Potential Speedups |  |
Perfect Flow Complexity | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
Perfect OpenMP/MPI/Pthread/TBB | 1.00 | 1.00 | 1.00 | 1.01 | 1.02 | 1.07 |
Perfect OpenMP/MPI/Pthread/TBB + Perfect Load Distribution | 1.00 | 1.01 | 1.04 | 1.07 | 1.11 | 1.20 |
Scalability - Gap | 1.00 | 1.02 | 1.06 | 1.11 | 1.17 | 1.37 |
No Scalar Integer | Potential Speedup | 1.11 | 1.11 | 1.11 | 1.10 | 1.10 | 1.09 |
Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 |
FP Vectorised | Potential Speedup | 3.35 | 3.29 | 3.13 | 2.95 | 2.75 | 2.43 |
Nb Loops to get 80% | 6 | 6 | 6 | 6 | 6 | 6 |
Fully Vectorised | Potential Speedup | 5.23 | 5.07 | 4.64 | 4.18 | 3.72 | 3.08 |
Nb Loops to get 80% | 7 | 7 | 7 | 7 | 7 | 7 |
Only FP Arithmetic | Potential Speedup | 1.33 | 1.33 | 1.32 | 1.30 | 1.28 | 1.25 |
Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 |
Source Object | Issue |
▼md-icpx-O3– | |
▼random.h– | |
○ | |
▼simulation.cpp– | |
○ | |
Source Object | Issue |
▼md-icpx-O3– | |
▼random.h– | |
○ | |
▼simulation.cpp– | |
○ | |
Source Object | Issue |
▼md-icpx-O3– | |
▼random.h– | |
○ | |
▼simulation.cpp– | |
○ | |
Source Object | Issue |
▼md-icpx-O3– | |
▼random.h– | |
○ | |
▼simulation.cpp– | |
○ | |
Source Object | Issue |
▼md-icpx-O3– | |
▼random.h– | |
○ | |
▼simulation.cpp– | |
○ | |
Source Object | Issue |
▼md-icpx-O3– | |
▼random.h– | |
○ | |
▼simulation.cpp– | |
○ | |
| r0 | r1 | r2 | r3 | r4 | r5 |
Experiment Name | MD scalability Skylake 2-52 threads runs - Code Optimisations version | Version : icpx-O3 | MD scalability Skylake 2-52 threads runs - Code Optimisations version | Version : icpx-O3 | MD scalability Skylake 2-52 threads runs - Code Optimisations version | Version : icpx-O3 | MD scalability Skylake 2-52 threads runs - Code Optimisations version | Version : icpx-O3 | MD scalability Skylake 2-52 threads runs - Code Optimisations version | Version : icpx-O3 | MD scalability Skylake 2-52 threads runs - Code Optimisations version | Version : icpx-O3 |
Application | ./bin/md-icpx-O3 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Timestamp | 2025-08-25 13:27:30 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Experiment Type | OpenMP; | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
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 |
md-icpx-O3: clang based Intel(R) oneAPI DPC++/C++ Compiler 2024.2.1 (2024.2.1.20240711) --driver-mode=g++ --intel -I include -std=c++17 -fiopenmp -D USE_OPENMP -D COMPUTE_FORCES_OPTIMS -Wall -Werror -Wextra -O3 -funroll-loops -g -x Host -mtune=native -c simulation.cpp -o simulation.o -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 | 2 | 4 | 8 | 16 | 26 | 52 |
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 | a5bc9ffe18a557b734e9194b2a08753f23990eca::20250818-184816 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Comments | Molecular Dynamics - CODE OPTS version - Dual Socket Intel Xeon Platinum 8170 (Skylake CPU), 2-52 threads runs | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |