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- r0: G++ O3 + Vectorize + Funroll + Ffastmath
- r1: ACFL O3 + Vectorize + Funroll + Ffastmath
| Metric | r0 | r1 |
|---|
| Total Time (s) | 10.74 | 10.58 |
| Max (Thread Active Time) (s) | 10.66 | 10.50 |
| Average Active Time (s) | 1.62 | 5.37 |
| Activity Ratio (%) | 15.1 | 50.8 |
| Average number of active threads | 9.637 | 32.487 |
| Affinity Stability (%) | 96.2 | 98.0 |
| GFLOPS | 0.551 | 6.801 |
| Time in analyzed loops (%) | 99.6 | 30.5 |
| Time in analyzed innermost loops (%) | 92.4 | 30.2 |
| Time in user code (%) | 99.6 | 30.5 |
| Compilation Options Score (%) | 87.5 | 100 |
| Array Access Efficiency (%) | 41.7 | 94.8 |
|
| Potential Speedups | |
| Perfect Flow Complexity | 2.81 | 1.00 |
| Perfect OpenMP/MPI/Pthread/TBB | 1.00 | 1.00 |
| Perfect OpenMP/MPI/Pthread/TBB + Perfect Load Distribution | 6.61 | 6.40 |
| No Scalar Integer | Potential Speedup | 3.25 | 1.01 |
| Nb Loops to get 80% | 2 | 1 |
| FP Vectorised | Potential Speedup | 1.48 | 1.10 |
| Nb Loops to get 80% | 1 | 1 |
| Fully Vectorised | Potential Speedup | 4.36 | 1.27 |
| Nb Loops to get 80% | 3 | 1 |
| Only FP Arithmetic | Potential Speedup | 1.63 | 1.02 |
| Nb Loops to get 80% | 2 | 1 |
| Source Object | Issue |
|---|
| ▼kmeans-gcc-O3-all– | |
| ▼main.cpp– | |
| ○ | -O3 or -Ofast is missing. |
| Source Object | Issue |
|---|
| ▼kmeans-acfl-O3-all– | |
| ▼main.cpp– | |
| ○ | |
| r0 | r1 |
|---|
| Experiment Name | K-Means scalability gcc-O3-all 100000000 | K-Means scalability acfl-O3-all 100000000 |
|---|
| Application | ./kmeans/kmeans-gcc-O3-all | ./kmeans/kmeans-acfl-O3-all |
|---|
| Timestamp | 2025-06-25 08:11:28 | 2025-07-07 09:20:12 |
|---|
| Experiment Type | OpenMP; | same as r0 |
|---|
| Machine | ip-172-31-18-66 | same as r0 |
|---|
| Architecture | aarch64 | same as r0 |
|---|
| Micro Architecture | ARM_NEOVERSE_V1 | same as r0 |
|---|
| Model Name | | |
|---|
| Cache Size | | |
|---|
| Number of Cores | | |
|---|
| Maximal Frequency | 0 GHz | same as r0 |
|---|
| OS Version | Linux 6.8.0-1029-aws #31-Ubuntu SMP Wed Apr 23 18:20:04 UTC 2025 | Linux 6.8.0-1030-aws #32-Ubuntu SMP Wed May 28 19:33:40 UTC 2025 |
|---|
| Architecture used during static analysis | aarch64 | same as r0 |
|---|
| Micro Architecture used during static analysis | ARM_NEOVERSE_V1 | 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 | kmeans-acfl-O3-all: Arm C/C++/Fortran Compiler version 24.10.1 (build number 4) (based on LLVM 19.1.0) /opt/arm/arm-linux-compiler-24.10.1_Ubuntu-20.04/llvm-bin/clang-19 --driver-mode=g++ -I . -MMD -MP -march=native -std=c++14 -g -fno-omit-frame-pointer -fopenmp -O3 -funroll-loops -ffast-math -grecord-command-line -c -o main.o main.cpp |
|---|
| Number of processes observed | 1 | same as r0 |
|---|
| Number of threads observed | 64 | same as r0 |
|---|
| Frequency Driver | NA | same as r0 |
|---|
| Frequency Governor | NA | same as r0 |
|---|
| Huge Pages | madvise | same as r0 |
|---|
| Hyperthreading | off | same as r0 |
|---|
| Number of sockets | 1 | same as r0 |
|---|
| Number of cores per socket | 64 | same as r0 |
|---|
| MAQAO version | 2025.1.0 | 2025.1.1 |
|---|
| MAQAO build | 1aa2a9a471b050a74c235cc16bddac6cbccb0136::20250625-092903 | f3e40b5f1dbd62488bc0cc5f885d40677c87bfe8::20250630-094248 |
|---|
| Comments | AWS Graviton 3 (Neoverse V1) CPU, 1-64 threads runs | same as r0 |
|---|
