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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
- r7: run_96_threads
Metric | r0 | r1 | r2 | r3 | r4 | r5 | r6 | r7 |
---|
Total Time (s) | 91.00 | 45.62 | 22.92 | 11.56 | 5.87 | 3.03 | 1.58 | 1.79 |
Max (Thread Active Time) (s) | 83.51 | 41.86 | 21.02 | 10.57 | 5.37 | 2.73 | 1.12 | 0.55 |
Average Active Time (s) | 83.51 | 41.82 | 20.99 | 10.55 | 5.32 | 2.68 | 1.07 | 0.46 |
Activity Ratio (%) | 91.8 | 91.7 | 91.6 | 91.3 | 90.7 | 88.7 | 67.7 | 25.7 |
Average number of active threads | 0.918 | 1.833 | 3.663 | 7.303 | 14.506 | 28.324 | 43.105 | 24.534 |
Affinity Stability (%) | 99.6 | 99.6 | 99.5 | 99.4 | 99.2 | 98.6 | 97.2 | 93.9 |
GFLOPS | 5.524 | 11.050 | 22.088 | 44.137 | 87.769 | 169.794 | 259.396 | 130.639 |
Time in analyzed loops (%) | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 99.8 | 99.4 | 98.6 |
Time in analyzed innermost loops (%) | 93.5 | 93.3 | 93.4 | 93.2 | 92.8 | 93.4 | 92.9 | 93.0 |
Time in user code (%) | 100 | 100.0 | 100.0 | 100.0 | 100.0 | 99.8 | 99.3 | 98.6 |
Compilation Options Score (%) | 87.5 | 87.5 | 87.5 | 87.5 | 87.5 | 87.5 | 87.5 | 87.5 |
Array Access Efficiency (%) | Not Available | Not Available | Not Available | Not Available | Not Available | Not Available | Not Available | Not Available |
|
Potential Speedups |  |
Perfect Flow Complexity | 1.60 | 1.60 | 1.60 | 1.60 | 1.59 | 1.57 | 1.51 | 1.46 |
Perfect OpenMP/MPI/Pthread/TBB | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.01 |
Perfect OpenMP/MPI/Pthread/TBB + Perfect Load Distribution | 1.00 | 1.00 | 1.00 | 1.00 | 1.01 | 1.02 | 1.06 | 1.22 |
Scalability - Gap | 1.00 | 1.00 | 1.01 | 1.02 | 1.03 | 1.07 | 1.11 | 1.88 |
No Scalar Integer | Potential Speedup | 3.65 | 3.65 | 3.65 | 3.64 | 3.59 | 3.37 | 2.91 | 2.57 |
Nb Loops to get 80% | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 |
FP Vectorised | Potential Speedup | 1.51 | 1.51 | 1.51 | 1.51 | 1.50 | 1.48 | 1.44 | 1.39 |
Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
Fully Vectorised | Potential Speedup | 1.65 | 1.65 | 1.65 | 1.65 | 1.64 | 1.62 | 1.55 | 1.49 |
Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
Only FP Arithmetic | Potential Speedup | 1.53 | 1.53 | 1.53 | 1.53 | 1.52 | 1.50 | 1.45 | 1.41 |
Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
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. |
Source Object | Issue |
▼kmeans-gcc-O3-all– | |
▼main.cpp– | |
○ | -O3 or -Ofast is missing. |
| r0 | r1 | r2 | r3 | r4 | r5 | r6 | r7 |
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 | 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 | same as r0 |
Timestamp | 2025-07-17 10:57:16 | same as r0 | 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 | same as r1 |
Machine | ip-172-31-47-249.ec2.internal | same as r0 | 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 | same as r0 |
Micro Architecture | ARM_NEOVERSE_V2 | same as r0 | 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 | same as r0 |
OS Version | Linux 6.1.109-118.189.amzn2023.aarch64 #1 SMP Tue Sep 10 08:58:40 UTC 2024 | same as r0 | 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 | same as r0 |
Micro Architecture used during static analysis | ARM_NEOVERSE_V2 | same as r0 | 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-v2+crc+sve2-aes+sve2-sha3+nossbs -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 | 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 | same as r0 |
Number of threads observed | 1 | 2 | 4 | 8 | 16 | 32 | 64 | 96 |
Frequency Driver | NA | same as r0 | 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 | same as r0 |
Huge Pages | madvise | same as r0 | 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 | 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 | same as r0 |
Number of cores per socket | 96 | same as r0 | 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 | same as r0 |
MAQAO build | 2302fb4b01f3b07cccb215042f4e5c7e9fcc3718::20250717-122749 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Comments | AWS Graviton 4 (Neoverse V2) CPU, 1-96 threads runs | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |