Programming Language and compiler
Benchmarks

C++ VS Python benchmarks

Current benchmark data was generated on Wed Jan 22 2025, full log can be found HERE

CONTRIBUTIONS are WELCOME!

[x86_64][4 cores] AMD EPYC 7763 64-Core Processor (Model 1)

* -m in a file name stands for multi-threading or multi-processing

* -i in a file name stands for direct intrinsics usage. (Usage of simd intrinsics via libraries is not counted)

* -ffi in a file name stands for non-stdlib FFI usage

* (You may find time < time(user) + time(sys) for some non-parallelized programs, the overhead is from GC or JIT compiler, which are allowed to take advantage of multi-cores as that's more close to real-world scenarios.)

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1-im.cpp 406ms 13ms 7.9MB 1557ms 7ms clang++ 14.0.0-1ubuntu1.1
cpp 1-im.cpp 407ms 4.6ms 4.7MB 1547ms 0ms g++ 11.4.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1-im.cpp 42ms 1.3ms 7.9MB 127ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 1-im.cpp 43ms 0.7ms 4.7MB 140ms 0ms g++ 11.4.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 1.0ms 0.0ms 1.4MB 0ms 0ms g++ 11.4.0
cpp 1.cpp 1.5ms 0.1ms 2.3MB 0ms 0ms clang++ 14.0.0-1ubuntu1.1
python 1.py 12ms 1.1ms 7.6MB 0ms 0ms pyston 3.8.12
python 1.py 14ms 1.2ms 8.5MB 10ms 0ms cpython 3.13.1
python 1.py 28ms 0.6ms 51.0MB 10ms 8ms pypy 3.10.14

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 166ms 0.1ms 1.5MB 160ms 0ms g++ 11.4.0
cpp 0-i.cpp 170ms 0.6ms 2.3MB 160ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 1.cpp 313ms 1.7ms 1.8MB 303ms 0ms g++ 11.4.0
cpp 1.cpp 313ms 1.0ms 2.3MB 300ms 0ms clang++ 14.0.0-1ubuntu1.1
python 2.py 1366ms 23ms 59.8MB 1340ms 10ms pypy 3.10.14
python 1.py 2633ms 17ms 56.6MB 2607ms 13ms pypy 3.10.14
python 1.py timeout 0.0ms 8.6MB 4983ms 3ms cpython 3.13.1
python 2.py timeout 0.0ms 8.8MB 4990ms 0ms cpython 3.13.1
python 1.py timeout 0.0ms 8.3MB 4983ms 3ms pyston 3.8.12
python 2.py timeout 0.0ms 8.1MB 4987ms 0ms pyston 3.8.12

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 19ms 0.1ms 1.5MB 10ms 0ms g++ 11.4.0
cpp 0-i.cpp 19ms 0.2ms 2.3MB 10ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 1.cpp 34ms 0.6ms 2.3MB 27ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 1.cpp 34ms 0.8ms 1.8MB 23ms 0ms g++ 11.4.0
python 2.py 177ms 2.3ms 57.6MB 150ms 13ms pypy 3.10.14
python 1.py 306ms 2.6ms 56.6MB 280ms 10ms pypy 3.10.14
python 1.py 921ms 5.6ms 8.3MB 907ms 0ms pyston 3.8.12
python 2.py 1297ms 37ms 8.3MB 1283ms 0ms pyston 3.8.12
python 1.py 2982ms 117ms 8.6MB 2973ms 0ms cpython 3.13.1
python 2.py 3119ms 42ms 8.8MB 3103ms 0ms cpython 3.13.1

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 483ms 3.5ms 7.3MB 470ms 0ms g++ 11.4.0
cpp 1.cpp 526ms 1.4ms 7.7MB 513ms 0ms clang++ 14.0.0-1ubuntu1.1
python 1.py 2562ms 34ms 369.0MB 2500ms 47ms pypy 3.10.14
python 2.py 3081ms 166ms 632.9MB 2897ms 163ms pyston 3.8.12
python 1.py 4831ms 35ms 320.4MB 4770ms 47ms pyston 3.8.12
python 1.py timeout 0.0ms 321.1MB 4960ms 27ms cpython 3.13.1
python 2.py timeout 0.0ms 633.7MB 4817ms 167ms cpython 3.13.1
python 2.py timeout 0.0ms 959.2MB 4713ms 273ms pypy 3.10.14

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 121ms 3.9ms 3.6MB 107ms 0ms g++ 11.4.0
cpp 1.cpp 132ms 1.8ms 4.0MB 123ms 0ms clang++ 14.0.0-1ubuntu1.1
python 1.py 541ms 4.6ms 134.6MB 507ms 17ms pypy 3.10.14
python 2.py 721ms 1.2ms 164.2MB 683ms 17ms pyston 3.8.12
python 1.py 1162ms 45ms 86.0MB 1130ms 13ms pyston 3.8.12
python 2.py 1435ms 3.2ms 164.8MB 1390ms 27ms cpython 3.13.1
python 2.py 1571ms 24ms 289.8MB 1473ms 80ms pypy 3.10.14
python 1.py 2724ms 28ms 86.8MB 2693ms 13ms cpython 3.13.1

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 471ms 6.8ms 7.6MB 1820ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 8-m.cpp 488ms 8.2ms 4.2MB 1883ms 0ms g++ 11.4.0
cpp 6-im.cpp 920ms 3.4ms 7.4MB 3587ms 7ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 925ms 1.0ms 4.2MB 3613ms 0ms g++ 11.4.0
python 8.py timeout 0.0ms 16.6MB 63ms 0ms cpython 3.13.1
python 8.py timeout 0.0ms 99.4MB 853ms 167ms pypy 3.10.14
python 8.py timeout 0.0ms 18.1MB 77ms 17ms pyston 3.8.12

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 129ms 6.4ms 7.4MB 460ms 3ms clang++ 14.0.0-1ubuntu1.1
cpp 8-m.cpp 129ms 0.3ms 4.1MB 477ms 0ms g++ 11.4.0
cpp 6-im.cpp 244ms 4.5ms 4.2MB 917ms 0ms g++ 11.4.0
cpp 6-im.cpp 246ms 5.8ms 7.3MB 917ms 0ms clang++ 14.0.0-1ubuntu1.1
python 8.py timeout 0.0ms 16.5MB 113ms 17ms cpython 3.13.1
python 8.py timeout 0.0ms 99.1MB 1567ms 470ms pypy 3.10.14
python 8.py timeout 0.0ms 17.6MB 137ms 33ms pyston 3.8.12

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 40ms 1.9ms 7.4MB 110ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 8-m.cpp 40ms 0.7ms 4.0MB 127ms 0ms g++ 11.4.0
cpp 6-im.cpp 67ms 0.7ms 7.1MB 227ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 68ms 0.6ms 4.0MB 240ms 0ms g++ 11.4.0
python 8-m.py 2021ms 18ms 94.9MB 6423ms 333ms pypy 3.10.14
python 8.py timeout 0.0ms 16.1MB 233ms 53ms cpython 3.13.1
python 8.py timeout 0.0ms 15.5MB 447ms 113ms pyston 3.8.12