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Global Metrics

Metricr0r1r2
Total Time (s)101.85103.9995.65
Max (Thread Active Time) (s)12.6412.136.15
Average Active Time (s)9.468.962.90
Activity Ratio (%)73.471.745.7
Average number of active threads2.4142.2410.789
Affinity Stability (%)72.170.443.1
GFLOPS10.42010.47021.698
Time in analyzed loops (%)99.699.494.8
Time in analyzed innermost loops (%)97.996.492.1
Time in user code (%)99.699.494.8
Compilation Options Score (%)75.016.7100
Array Access Efficiency (%)99.198.592.8
Potential Speedups
Perfect Flow Complexity1.001.001.00
Perfect OpenMP/MPI/Pthread/TBB1.011.001.01
Perfect OpenMP/MPI/Pthread/TBB + Perfect Load Distribution1.341.362.23
No Scalar IntegerPotential Speedup1.011.011.13
Nb Loops to get 80%111
FP VectorisedPotential Speedup2.242.321.49
Nb Loops to get 80%111
Fully VectorisedPotential Speedup7.477.382.35
Nb Loops to get 80%112
Only FP ArithmeticPotential Speedup1.011.021.52
Nb Loops to get 80%112

Cumulated Speedup If No Scalar Integer

Cumulated Speedup If FP Vectorized

Cumulated Speedup If Fully Vectorized

Cumulated Speedup If Only FP Arithmetic

Loop Based Profiles

Innermost / Single Loops

Inbetween Loops

Outermost Loops

Cumulated Coverage With All Loops

Innermost Loop Based Profiles

Coverage

Count

Application Categorization

Time

Coverage

Compilation Options

Source ObjectIssue
▼kmeans-gcc-Ofast–
▼main.cpp–
○-funroll-loops is missing.

Path Count Profiles

Coverage

Count

Low Iteration Count Profiles

Coverage

Count

Average Number of Active Threads

Run 1 - Skylake GCC Ofast Manual Unroll + SoA

Run 2 - Skylake Clang O3 + ffast-math Manual Unroll + SoA

Run 3 - Skylake ICPX Ofast Manual Unroll + SoA

Experiment Summaries

r0r1r2
Experiment NameK-Means scalability gcc-Ofast 100000000K-Means scalability clang-O3-ffast-math 100000000K-Means scalability icpx-Ofast 100000000
Application./kmeans/kmeans-gcc-Ofast./kmeans/kmeans-clang-O3-ffast-math./kmeans/kmeans-icpx-Ofast
Timestamp2025-08-14 13:29:302025-08-14 13:52:082025-08-14 14:09:15
Experiment TypeOpenMP; same as r0same as r0
Machineskylakesame as r0same as r0
Architecturex86_64same as r0same as r0
Micro ArchitectureSKYLAKEsame as r0same as r0
Model NameIntel(R) Xeon(R) Platinum 8170 CPU @ 2.10GHzsame as r0same as r0
Cache Size36608 KBsame as r0same as r0
Number of Cores26same as r0same as r0
Maximal Frequency2.1 GHzsame as r0same as r0
OS VersionLinux 6.15.5-arch1-1 #1 SMP PREEMPT_DYNAMIC Sun, 06 Jul 2025 11:14:36 +0000same as r0same as r0
Architecture used during static analysisx86_64same as r0same as r0
Micro Architecture used during static analysisSKYLAKEsame as r0same as r0
Compilation Options kmeans-gcc-Ofast: GNU C++14 15.1.1 20250425 -march=skylake-avx512 -mmmx -mpopcnt -msse -msse2 -msse3 -mssse3 -msse4.1 -msse4.2 -mavx -mavx2 -mno-sse4a -mno-fma4 -mno-xop -mfma -mavx512f -mbmi -mbmi2 -maes -mpclmul -mavx512vl -mavx512bw -mavx512dq -mavx512cd -mno-avx512vbmi -mno-avx512ifma -mno-avx512vpopcntdq -mno-avx512vbmi2 -mno-gfni -mno-vpclmulqdq -mno-avx512vnni -mno-avx512bitalg -mno-avx512bf16 -mno-avx512vp2intersect -mno-3dnow -madx -mabm -mno-cldemote -mclflushopt -mclwb -mno-clzero -mcx16 -mno-enqcmd -mf16c -mfsgsbase -mfxsr -mhle -msahf -mno-lwp -mlzcnt -mmovbe -mno-movdir64b -mno-movdiri -mno-mwaitx -mno-pconfig -mpku -mprfchw -mno-ptwrite -mno-rdpid -mrdrnd -mrdseed -mrtm -mno-serialize -mno-sgx -mno-sha -mno-shstk -mno-tbm -mno-tsxldtrk -mno-vaes -mno-waitpkg -mno-wbnoinvd -mxsave -mxsavec -mxsaveopt -mxsaves -mno-amx-tile -mno-amx-int8 -mno-amx-bf16 -mno-uintr -mno-hreset -mno-kl -mno-widekl -mno-avxvnni -mno-avx512fp16 -mno-avxifma -mno-avxvnniint8 -mno-avxneconvert -mno-cmpccxadd -mno-amx-fp16 -mno-prefetchi -mno-raoint -mno-amx-complex -mno-avxvnniint16 -mno-sm3 -mno-sha512 -mno-sm4 -mno-apxf -mno-usermsr -mno-avx10.2 -mno-amx-avx512 -mno-amx-tf32 -mno-amx-transpose -mno-amx-fp8 -mno-movrs -mno-amx-movrs --param=l1-cache-size=32 --param=l1-cache-line-size=64 --param=l2-cache-size=36608 -mtune=skylake-avx512 -g -Ofast -std=c++14 -fno-omit-frame-pointer -fopenmp kmeans-clang-O3-ffast-math: clang version 20.1.7 kmeans-icpx-Ofast: clang based Intel(R) oneAPI DPC++/C++ Compiler 2024.2.1 (2024.2.1.20240711) --driver-mode=g++ --intel -I . -MMD -MP -Wall -std=c++14 -g -fno-omit-frame-pointer -fiopenmp -Ofast -x Host -mtune=native -c -o main.o main.cpp -fveclib=SVML -faltmathlib=SVML -fheinous-gnu-extensions
Number of processes observed1same as r0same as r0
Number of threads observed26same as r0same as r0
Frequency Driverintel_cpufreqsame as r0same as r0
Frequency Governorschedutilsame as r0same as r0
Huge Pagesalwayssame as r0same as r0
Hyperthreadingoffsame as r0same as r0
Number of sockets2same as r0same as r0
Number of cores per socket26same as r0same as r0
MAQAO version2025.1.2same as r0same as r0
MAQAO build3c12046452d68b38e394be5cd9e057265a89bbcf::20250812-175904same as r0same as r0
CommentsIntel Xeon Platinum 8170 (Skylake CPU), 1-26 threads runssame as r0same as r0
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