C++ VS C benchmarks

Current benchmark data was generated on Mon Oct 03 2022, 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 753ms 4.3ms 1.0MB 1460ms 0ms g++ 12.2.0
cpp 1-im.cpp 772ms 3.1ms 3.5MB 1500ms 0ms clang++ 11.0.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1-im.cpp 72ms 1.9ms 1.0MB 120ms 0ms g++ 12.2.0
cpp 1-im.cpp 74ms 3.1ms 3.5MB 123ms 0ms clang++ 11.0.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1.c 1.9ms 0.7ms 1.0MB 0ms 0ms gcc 12.2.0
c 1.c 2.4ms 0.7ms 0.6MB 0ms 0ms zigcc 0.10.0-dev.4213+91b05ad47
cpp 1.cpp 2.4ms 0.6ms 1.1MB 0ms 0ms clang++ 11.0.0
c 1.c 2.8ms 0.9ms 1.1MB 0ms 0ms clang 11.0.0
cpp 1.cpp 3.1ms 2.0ms 1.0MB 0ms 0ms g++ 12.2.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 226ms 1.0ms 0.9MB 220ms 0ms g++ 12.2.0
cpp 0-i.cpp 258ms 1.2ms 1.1MB 247ms 0ms clang++ 11.0.0
c 8-i.c 308ms 0.4ms 0.6MB 300ms 0ms zigcc 0.10.0-dev.4213+91b05ad47
c 5.c 320ms 0.4ms 1.0MB 310ms 0ms gcc 12.2.0
c 5.c 330ms 2.3ms 0.6MB 320ms 0ms zigcc 0.10.0-dev.4213+91b05ad47
c 2.c 337ms 0.0ms 0.6MB 330ms 0ms zigcc 0.10.0-dev.4213+91b05ad47
cpp 1.cpp 339ms 0.7ms 1.0MB 330ms 0ms g++ 12.2.0
c 8-i.c 348ms 3.3ms 1.1MB 333ms 0ms clang 11.0.0
c 8-i.c 365ms 0.7ms 0.9MB 357ms 0ms gcc 12.2.0
c 5.c 370ms 1.6ms 1.1MB 360ms 0ms clang 11.0.0
cpp 1.cpp 384ms 0.4ms 1.1MB 370ms 0ms clang++ 11.0.0
c 2.c 408ms 0.6ms 1.1MB 400ms 0ms clang 11.0.0
c 2.c 625ms 0.5ms 0.9MB 613ms 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 26ms 1.3ms 1.0MB 13ms 0ms g++ 12.2.0
cpp 0-i.cpp 29ms 0.6ms 1.1MB 20ms 0ms clang++ 11.0.0
c 8-i.c 33ms 0.4ms 0.6MB 20ms 0ms zigcc 0.10.0-dev.4213+91b05ad47
c 5.c 35ms 0.4ms 1.0MB 30ms 0ms gcc 12.2.0
c 5.c 35ms 0.6ms 0.6MB 23ms 0ms zigcc 0.10.0-dev.4213+91b05ad47
c 2.c 36ms 0.5ms 0.6MB 30ms 0ms zigcc 0.10.0-dev.4213+91b05ad47
cpp 1.cpp 37ms 0.7ms 1.0MB 30ms 0ms g++ 12.2.0
c 8-i.c 39ms 1.5ms 1.1MB 27ms 0ms clang 11.0.0
c 8-i.c 39ms 0.6ms 0.9MB 30ms 0ms gcc 12.2.0
cpp 1.cpp 41ms 0.2ms 1.1MB 30ms 0ms clang++ 11.0.0
c 5.c 41ms 2.4ms 1.1MB 30ms 0ms clang 11.0.0
c 2.c 43ms 0.3ms 1.1MB 33ms 0ms clang 11.0.0
c 2.c 65ms 0.5ms 1.0MB 53ms 0ms gcc 12.2.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 419ms 3.4ms 7.5MB 407ms 0ms clang++ 11.0.0
cpp 1.cpp 644ms 2.2ms 7.7MB 630ms 0ms g++ 12.2.0
c 1.c 650ms 12ms 41.1MB 620ms 17ms gcc 12.2.0
c 1.c 662ms 5.3ms 40.2MB 633ms 13ms zigcc 0.10.0-dev.4213+91b05ad47
c 1.c 736ms 9.4ms 41.0MB 697ms 13ms clang 11.0.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 94ms 0.3ms 3.7MB 80ms 0ms clang++ 11.0.0
c 1.c 119ms 3.3ms 11.6MB 107ms 0ms clang 11.0.0
c 1.c 119ms 0.8ms 10.9MB 103ms 0ms zigcc 0.10.0-dev.4213+91b05ad47
c 1.c 122ms 5.9ms 11.7MB 110ms 0ms gcc 12.2.0
cpp 1.cpp 153ms 0.3ms 4.0MB 143ms 0ms g++ 12.2.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 1061ms 1.3ms 3.1MB 2073ms 0ms clang++ 11.0.0
cpp 7-m.cpp 1061ms 3.4ms 3.2MB 2073ms 3ms clang++ 11.0.0
cpp 7-m.cpp 1062ms 2.6ms 0.9MB 2083ms 0ms g++ 12.2.0
cpp 8-m.cpp 1063ms 0.8ms 0.9MB 2077ms 0ms g++ 12.2.0
c 4-m.c 1429ms 39ms 1.0MB 2740ms 0ms gcc 12.2.0
c 6-im.c 1589ms 17ms 1.0MB 3113ms 3ms gcc 12.2.0
c 6-im.c 1731ms 10.0ms 3.2MB 3390ms 0ms clang 11.0.0
c 4-m.c 1751ms 13ms 2.9MB 3413ms 7ms clang 11.0.0
c 5-im.c 1849ms 7.8ms 1.0MB 3633ms 0ms gcc 12.2.0
c 5-im.c 2037ms 18ms 3.2MB 3997ms 0ms clang 11.0.0
c 3-m.c 2203ms 0.8ms 0.9MB 4330ms 0ms gcc 12.2.0
c 3-m.c 2211ms 7.3ms 2.9MB 4340ms 3ms clang 11.0.0
cpp 6-im.cpp 2243ms 24ms 3.2MB 4400ms 0ms clang++ 11.0.0
cpp 6-im.cpp 2243ms 21ms 1.0MB 4400ms 0ms g++ 12.2.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 276ms 1.4ms 3.2MB 517ms 0ms clang++ 11.0.0
cpp 7-m.cpp 279ms 4.6ms 0.9MB 523ms 0ms g++ 12.2.0
cpp 8-m.cpp 279ms 3.6ms 0.9MB 520ms 0ms g++ 12.2.0
cpp 7-m.cpp 279ms 5.3ms 3.2MB 520ms 0ms clang++ 11.0.0
c 4-m.c 361ms 2.5ms 1.0MB 687ms 0ms gcc 12.2.0
c 6-im.c 405ms 0.6ms 0.9MB 777ms 0ms gcc 12.2.0
c 6-im.c 446ms 3.1ms 3.1MB 853ms 0ms clang 11.0.0
c 4-m.c 446ms 2.0ms 3.0MB 850ms 0ms clang 11.0.0
c 5-im.c 471ms 0.6ms 1.0MB 910ms 0ms gcc 12.2.0
c 5-im.c 520ms 2.2ms 3.1MB 1000ms 0ms clang 11.0.0
cpp 6-im.cpp 567ms 1.3ms 1.0MB 1100ms 0ms g++ 12.2.0
cpp 6-im.cpp 568ms 1.5ms 3.2MB 1097ms 0ms clang++ 11.0.0
c 3-m.c 569ms 14ms 1.0MB 1090ms 0ms gcc 12.2.0
c 3-m.c 574ms 11ms 3.0MB 1093ms 0ms clang 11.0.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 76ms 1.1ms 3.2MB 130ms 0ms clang++ 11.0.0
cpp 7-m.cpp 76ms 0.8ms 1.0MB 130ms 0ms g++ 12.2.0
cpp 7-m.cpp 76ms 2.1ms 3.2MB 130ms 0ms clang++ 11.0.0
cpp 8-m.cpp 77ms 1.9ms 1.0MB 130ms 0ms g++ 12.2.0
c 4-m.c 97ms 0.8ms 1.0MB 170ms 0ms gcc 12.2.0
c 6-im.c 110ms 2.4ms 1.0MB 193ms 0ms gcc 12.2.0
c 6-im.c 118ms 0.7ms 3.1MB 210ms 0ms clang 11.0.0
c 4-m.c 120ms 0.8ms 3.1MB 210ms 0ms clang 11.0.0
c 5-im.c 129ms 2.7ms 2.9MB 230ms 0ms gcc 12.2.0
c 5-im.c 143ms 5.6ms 3.1MB 253ms 0ms clang 11.0.0
c 3-m.c 150ms 1.0ms 1.0MB 280ms 0ms gcc 12.2.0
cpp 6-im.cpp 150ms 0.2ms 3.2MB 277ms 0ms clang++ 11.0.0
cpp 6-im.cpp 151ms 1.4ms 1.0MB 280ms 0ms g++ 12.2.0
c 3-m.c 152ms 1.8ms 2.9MB 270ms 0ms clang 11.0.0