C++ VS C benchmarks

Current benchmark data was generated on Sat Jan 28 2023, full log can be found HERE

CONTRIBUTIONS are WELCOME!

[x86_64][2 cores] Intel(R) Xeon(R) Platinum 8370C CPU @ 2.80GHz (Model 106)

* -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 756ms 13ms 1.4MB 1457ms 0ms g++ 12.2.0
cpp 1-im.cpp 763ms 5.8ms 4.0MB 1487ms 0ms clang++ 14.0.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1-im.cpp 70ms 0.3ms 1.4MB 117ms 0ms g++ 12.2.0
cpp 1-im.cpp 72ms 1.8ms 4.0MB 123ms 0ms clang++ 14.0.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 1.7ms 0.8ms 2.4MB 0ms 0ms g++ 12.2.0
c 1.c 1.7ms 0.3ms 1.4MB 0ms 0ms clang 14.0.0
c 1.c 1.8ms 0.5ms 1.3MB 0ms 0ms gcc 12.2.0
cpp 1.cpp 2.1ms 0.6ms 1.4MB 0ms 0ms clang++ 14.0.0
c 1.c 3.4ms 0.1ms 0.0MB 0ms 0ms zigcc 0.11.0-dev.1479+97b1a9bb6

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 225ms 0.5ms 1.3MB 213ms 0ms g++ 12.2.0
cpp 0-i.cpp 255ms 3.2ms 1.4MB 240ms 0ms clang++ 14.0.0
c 8-i.c 315ms 3.9ms 1.3MB 297ms 0ms zigcc 0.11.0-dev.1479+97b1a9bb6
c 5.c 320ms 0.3ms 1.3MB 310ms 0ms gcc 12.2.0
cpp 1.cpp 326ms 1.8ms 1.4MB 313ms 0ms clang++ 14.0.0
c 5.c 329ms 1.2ms 1.0MB 317ms 0ms zigcc 0.11.0-dev.1479+97b1a9bb6
c 5.c 331ms 0.2ms 1.4MB 320ms 0ms clang 14.0.0
c 2.c 340ms 2.0ms 1.2MB 327ms 0ms zigcc 0.11.0-dev.1479+97b1a9bb6
c 2.c 341ms 0.6ms 1.4MB 330ms 0ms clang 14.0.0
cpp 1.cpp 341ms 1.0ms 1.3MB 330ms 0ms g++ 12.2.0
c 8-i.c 365ms 0.8ms 1.3MB 350ms 0ms gcc 12.2.0
c 8-i.c 373ms 2.0ms 1.4MB 360ms 0ms clang 14.0.0
c 2.c 624ms 0.7ms 1.3MB 610ms 0ms gcc 12.2.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 25ms 0.0ms 1.3MB 17ms 0ms g++ 12.2.0
cpp 0-i.cpp 29ms 2.1ms 1.4MB 20ms 0ms clang++ 14.0.0
c 8-i.c 33ms 0.2ms 1.3MB 20ms 0ms zigcc 0.11.0-dev.1479+97b1a9bb6
c 5.c 34ms 0.3ms 1.3MB 23ms 0ms gcc 12.2.0
c 5.c 35ms 0.2ms 1.4MB 27ms 0ms clang 14.0.0
c 5.c 36ms 0.6ms 1.0MB 27ms 0ms zigcc 0.11.0-dev.1479+97b1a9bb6
cpp 1.cpp 36ms 0.8ms 1.4MB 27ms 0ms clang++ 14.0.0
cpp 1.cpp 36ms 0.4ms 1.4MB 30ms 0ms g++ 12.2.0
c 2.c 37ms 1.2ms 1.4MB 30ms 0ms clang 14.0.0
c 2.c 37ms 1.0ms 2.0MB 27ms 0ms zigcc 0.11.0-dev.1479+97b1a9bb6
c 8-i.c 38ms 0.2ms 1.3MB 30ms 0ms gcc 12.2.0
c 8-i.c 40ms 0.9ms 1.4MB 30ms 0ms clang 14.0.0
c 2.c 65ms 0.4ms 1.3MB 53ms 0ms gcc 12.2.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1.c 578ms 9.5ms 40.8MB 553ms 7ms clang 14.0.0
c 1.c 593ms 23ms 40.2MB 570ms 7ms zigcc 0.11.0-dev.1479+97b1a9bb6
c 1.c 632ms 33ms 41.1MB 600ms 13ms gcc 12.2.0
cpp 1.cpp 644ms 12ms 7.8MB 633ms 0ms g++ 12.2.0
cpp 1.cpp 711ms 5.6ms 7.7MB 697ms 0ms clang++ 14.0.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1.c 115ms 1.2ms 11.4MB 103ms 0ms clang 14.0.0
c 1.c 119ms 3.0ms 11.1MB 110ms 0ms zigcc 0.11.0-dev.1479+97b1a9bb6
c 1.c 120ms 2.3ms 11.8MB 110ms 0ms gcc 12.2.0
cpp 1.cpp 154ms 2.5ms 4.0MB 143ms 0ms g++ 12.2.0
cpp 1.cpp 169ms 0.6ms 4.0MB 160ms 0ms clang++ 14.0.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 7-m.cpp 1059ms 3.0ms 3.3MB 2077ms 0ms clang++ 14.0.0
cpp 7-m.cpp 1061ms 5.4ms 1.3MB 2080ms 0ms g++ 12.2.0
cpp 8-m.cpp 1065ms 0.4ms 1.4MB 2080ms 0ms g++ 12.2.0
cpp 8-m.cpp 1069ms 14ms 3.5MB 2080ms 0ms clang++ 14.0.0
c 4-m.c 1389ms 1.4ms 1.3MB 2723ms 0ms gcc 12.2.0
c 6-im.c 1613ms 2.8ms 1.3MB 3163ms 0ms gcc 12.2.0
c 6-im.c 1684ms 16ms 3.3MB 3300ms 0ms clang 14.0.0
c 4-m.c 1698ms 5.3ms 3.1MB 3337ms 0ms clang 14.0.0
c 5-im.c 1848ms 11ms 1.3MB 3630ms 0ms gcc 12.2.0
c 5-im.c 2152ms 3.8ms 3.2MB 4233ms 0ms clang 14.0.0
c 3-m.c 2200ms 14ms 1.3MB 4330ms 0ms gcc 12.2.0
c 3-m.c 2210ms 8.6ms 3.2MB 4337ms 3ms clang 14.0.0
cpp 6-im.cpp 2223ms 8.8ms 3.3MB 4353ms 3ms clang++ 14.0.0
cpp 6-im.cpp 2238ms 14ms 1.3MB 4390ms 0ms g++ 12.2.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 7-m.cpp 273ms 0.1ms 3.4MB 520ms 0ms clang++ 14.0.0
cpp 8-m.cpp 274ms 0.9ms 1.4MB 520ms 0ms g++ 12.2.0
cpp 7-m.cpp 275ms 2.4ms 1.3MB 520ms 0ms g++ 12.2.0
cpp 8-m.cpp 276ms 3.9ms 3.3MB 517ms 0ms clang++ 14.0.0
c 4-m.c 357ms 1.3ms 1.3MB 687ms 0ms gcc 12.2.0
c 6-im.c 416ms 4.5ms 1.3MB 793ms 0ms gcc 12.2.0
c 6-im.c 431ms 2.2ms 3.1MB 820ms 0ms clang 14.0.0
c 4-m.c 436ms 2.6ms 3.1MB 837ms 0ms clang 14.0.0
c 5-im.c 472ms 2.2ms 1.3MB 907ms 0ms gcc 12.2.0
c 3-m.c 560ms 4.0ms 1.3MB 1080ms 0ms gcc 12.2.0
cpp 6-im.cpp 562ms 1.6ms 3.5MB 1087ms 0ms clang++ 14.0.0
c 3-m.c 564ms 4.7ms 3.2MB 1090ms 0ms clang 14.0.0
cpp 6-im.cpp 566ms 3.0ms 1.4MB 1097ms 0ms g++ 12.2.0
c 5-im.c 590ms 76ms 3.3MB 1093ms 0ms clang 14.0.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 7-m.cpp 75ms 0.9ms 1.3MB 130ms 0ms g++ 12.2.0
cpp 7-m.cpp 76ms 2.0ms 3.3MB 130ms 0ms clang++ 14.0.0
cpp 8-m.cpp 76ms 1.2ms 3.3MB 127ms 0ms clang++ 14.0.0
cpp 8-m.cpp 78ms 4.9ms 1.3MB 130ms 0ms g++ 12.2.0
c 4-m.c 102ms 3.6ms 1.3MB 177ms 0ms gcc 12.2.0
c 6-im.c 112ms 2.5ms 1.3MB 200ms 0ms gcc 12.2.0
c 6-im.c 115ms 0.2ms 3.2MB 203ms 0ms clang 14.0.0
c 4-m.c 119ms 2.3ms 3.5MB 210ms 0ms clang 14.0.0
c 5-im.c 127ms 0.5ms 1.3MB 230ms 0ms gcc 12.2.0
c 5-im.c 147ms 2.5ms 3.2MB 263ms 3ms clang 14.0.0
cpp 6-im.cpp 149ms 0.8ms 3.3MB 270ms 0ms clang++ 14.0.0
c 3-m.c 149ms 1.3ms 3.3MB 273ms 0ms gcc 12.2.0
c 3-m.c 150ms 1.7ms 3.2MB 273ms 0ms clang 14.0.0
cpp 6-im.cpp 151ms 1.5ms 1.3MB 277ms 0ms g++ 12.2.0