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- r0: run_1_thread
- r1: run_2_threads
- r2: run_4_threads
- r3: run_8_threads
- r4: run_16_threads
- r5: run_32_threads
- r6: run_64_threads
Metric | r0 | r1 | r2 | r3 | r4 | r5 | r6 |
---|
Total Time (s) | 203.57 | 130.94 | 95.04 | 75.91 | 66.34 | 61.73 | 59.88 |
Max (Thread Active Time) (s) | 142.39 | 72.28 | 36.93 | 18.65 | 9.39 | 4.88 | 2.02 |
Average Active Time (s) | 142.39 | 71.35 | 35.77 | 17.89 | 8.89 | 4.20 | 0.82 |
Activity Ratio (%) | 69.9 | 54.5 | 37.6 | 23.6 | 13.4 | 6.81 | 1.37 |
Average number of active threads | 0.699 | 1.090 | 1.505 | 1.886 | 2.144 | 2.179 | 0.875 |
Affinity Stability (%) | 72.2 | 56.9 | 40.1 | 25.6 | 14.9 | 8.48 | 5.50 |
GFLOPS | 4.818 | 7.489 | 10.307 | 12.850 | 14.480 | 14.268 | 4.776 |
Time in analyzed loops (%) | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 99.9 | 99.0 |
Time in analyzed innermost loops (%) | 94.3 | 94.1 | 94.2 | 94.1 | 93.9 | 94.2 | 94.3 |
Time in user code (%) | 100 | 100 | 100.0 | 100.0 | 100.0 | 99.9 | 99.0 |
Compilation Options Score (%) | 87.5 | 87.5 | 87.5 | 87.5 | 87.5 | 87.5 | 87.5 |
Array Access Efficiency (%) | 41.7 | 41.7 | 41.7 | 41.7 | 41.7 | 41.7 | 41.7 |
|
Potential Speedups |  |
Perfect Flow Complexity | 3.66 | 3.64 | 3.64 | 3.62 | 3.56 | 3.37 | 2.37 |
Perfect OpenMP/MPI/Pthread/TBB | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
Perfect OpenMP/MPI/Pthread/TBB + Perfect Load Distribution | 1.00 | 1.01 | 1.03 | 1.04 | 1.06 | 1.16 | 2.49 |
Scalability - Gap | 1.00 | 1.29 | 1.87 | 2.98 | 5.21 | 9.70 | 18.83 |
No Scalar Integer | Potential Speedup | 3.64 | 3.65 | 3.64 | 3.63 | 3.62 | 3.49 | 2.85 |
Nb Loops to get 80% | 1 | 1 | 1 | 2 | 2 | 2 | 2 |
FP Vectorised | Potential Speedup | 1.52 | 1.52 | 1.52 | 1.52 | 1.52 | 1.51 | 1.42 |
Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 | 2 |
Fully Vectorised | Potential Speedup | 4.40 | 4.40 | 4.40 | 4.40 | 4.40 | 4.38 | 4.26 |
Nb Loops to get 80% | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
Only FP Arithmetic | Potential Speedup | 1.52 | 1.52 | 1.52 | 1.53 | 1.53 | 1.56 | 1.76 |
Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 2 | 2 |
Source Object | Issue |
▼kmeans-gcc-O3-all– | |
▼main.cpp– | |
○ | -O3 or -Ofast is missing. |
Source Object | Issue |
▼kmeans-gcc-O3-all– | |
▼main.cpp– | |
○ | -O3 or -Ofast is missing. |
Source Object | Issue |
▼kmeans-gcc-O3-all– | |
▼main.cpp– | |
○ | -O3 or -Ofast is missing. |
Source Object | Issue |
▼kmeans-gcc-O3-all– | |
▼main.cpp– | |
○ | -O3 or -Ofast is missing. |
Source Object | Issue |
▼kmeans-gcc-O3-all– | |
▼main.cpp– | |
○ | -O3 or -Ofast is missing. |
Source Object | Issue |
▼kmeans-gcc-O3-all– | |
▼main.cpp– | |
○ | -O3 or -Ofast is missing. |
Source Object | Issue |
▼kmeans-gcc-O3-all– | |
▼main.cpp– | |
○ | -O3 or -Ofast is missing. |
| r0 | r1 | r2 | r3 | r4 | r5 | r6 |
Experiment Name | K-Means scalability gcc-O3-all 100000000 | K-Means scalability gcc-O3-all 100000000 | K-Means scalability gcc-O3-all 100000000 | K-Means scalability gcc-O3-all 100000000 | K-Means scalability gcc-O3-all 100000000 | K-Means scalability gcc-O3-all 100000000 | K-Means scalability gcc-O3-all 100000000 |
Application | ./kmeans/kmeans-gcc-O3-all | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Timestamp | 2025-07-17 09:49:02 | same as r0 | same as r0 | 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 | same as r1 | same as r1 |
Machine | ip-172-31-18-66 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Architecture | aarch64 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Micro Architecture | ARM_NEOVERSE_V1 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Model Name | | | | | | | |
Cache Size | | | | | | | |
Number of Cores | | | | | | | |
Maximal Frequency | 0 GHz | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
OS Version | Linux 6.8.0-1031-aws #33-Ubuntu SMP Fri Jun 20 17:58:11 UTC 2025 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Architecture used during static analysis | aarch64 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Micro Architecture used during static analysis | ARM_NEOVERSE_V1 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Compilation Options |
kmeans-gcc-O3-all: GNU C++14 14.2.0 -mlittle-endian -mabi=lp64 -mcpu=neoverse-v1+sm4+crc+aes+sha3 -g -O3 -std=c++14 -fno-omit-frame-pointer -fopenmp -ftree-vectorize -funroll-loops -ffast-math GNU C17 14.2.0 -mlittle-endian -mabi=lp64 -g -g -g -O2 -O2 -O2 -fbuilding-libgcc -fno-stack-protector -fPIC | same as r0 | 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 | same as r0 |
Number of threads observed | 1 | 2 | 4 | 8 | 16 | 32 | 64 |
Frequency Driver | NA | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Frequency Governor | NA | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Huge Pages | madvise | same as r0 | 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 | same as r0 |
Number of sockets | 1 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Number of cores per socket | 64 | same as r0 | same as r0 | 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 | same as r0 | same as r0 |
MAQAO build | f763b230967252184a5e61875ae92196728ac8f6::20250710-120157 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Comments | AWS Graviton 3 (Neoverse V1) CPU, 1-64 threads runs | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |