C++ VS Kotlin benchmarks

Current benchmark data was generated on Thu Jul 13 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 755ms 45ms 1.2MB 1417ms 0ms g++ 11.3.0
cpp 1-im.cpp 767ms 1.8ms 4.0MB 1490ms 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 71ms 2.2ms 1.2MB 120ms 0ms g++ 11.3.0
cpp 1-im.cpp 72ms 2.1ms 4.3MB 120ms 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 0.4ms 1.4MB 0ms 0ms clang++ 14.0.0
cpp 1.cpp 2.1ms 0.9ms 1.0MB 0ms 0ms g++ 11.3.0
kotlin 1.kt 2.2ms 0.6ms 1.5MB 0ms 0ms kotlin/native 1.8.21
kotlin 1.kt 65ms 4.9ms 40.9MB 50ms 10ms kotlin/jvm 17.0.2

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 225ms 1.3ms 1.0MB 220ms 0ms g++ 11.3.0
cpp 0-i.cpp 253ms 0.7ms 1.5MB 240ms 0ms clang++ 14.0.0
cpp 1.cpp 327ms 1.0ms 1.4MB 317ms 0ms clang++ 14.0.0
cpp 1.cpp 341ms 0.8ms 1.2MB 327ms 0ms g++ 11.3.0
kotlin 1n.kt 532ms 5.2ms 1.5MB 517ms 0ms kotlin/native 1.8.21
kotlin 1.kt 576ms 4.4ms 42.8MB 577ms 17ms kotlin/jvm 17.0.2

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 25ms 0.4ms 1.0MB 17ms 0ms g++ 11.3.0
cpp 0-i.cpp 28ms 0.6ms 1.4MB 20ms 0ms clang++ 14.0.0
cpp 1.cpp 35ms 0.8ms 1.5MB 25ms 0ms clang++ 14.0.0
cpp 1.cpp 37ms 0.6ms 1.3MB 27ms 0ms g++ 11.3.0
kotlin 1n.kt 55ms 0.1ms 1.5MB 50ms 0ms kotlin/native 1.8.21
kotlin 1.kt 148ms 2.5ms 43.4MB 150ms 10ms kotlin/jvm 17.0.2

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 657ms 2.1ms 6.9MB 650ms 0ms g++ 11.3.0
cpp 1.cpp 718ms 8.5ms 7.5MB 703ms 0ms clang++ 14.0.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 153ms 0.2ms 3.5MB 140ms 0ms g++ 11.3.0
cpp 1.cpp 170ms 0.3ms 3.9MB 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 8-m.cpp 1057ms 1.1ms 3.3MB 2077ms 0ms clang++ 14.0.0
cpp 7-m.cpp 1059ms 0.7ms 2.3MB 2077ms 0ms g++ 11.3.0
cpp 7-m.cpp 1061ms 1.7ms 3.3MB 2070ms 0ms clang++ 14.0.0
cpp 8-m.cpp 1063ms 2.1ms 2.2MB 2080ms 0ms g++ 11.3.0
cpp 6-im.cpp 2221ms 26ms 3.3MB 4363ms 0ms clang++ 14.0.0
cpp 6-im.cpp 2251ms 15ms 2.2MB 4413ms 0ms g++ 11.3.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 273ms 0.5ms 1.3MB 520ms 0ms g++ 11.3.0
cpp 8-m.cpp 274ms 0.5ms 3.3MB 520ms 0ms clang++ 14.0.0
cpp 7-m.cpp 274ms 2.3ms 1.3MB 523ms 0ms g++ 11.3.0
cpp 7-m.cpp 275ms 1.9ms 3.4MB 517ms 0ms clang++ 14.0.0
cpp 6-im.cpp 564ms 3.8ms 3.4MB 1087ms 0ms clang++ 14.0.0
cpp 6-im.cpp 572ms 1.4ms 1.3MB 1107ms 0ms g++ 11.3.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 75ms 0.5ms 3.3MB 127ms 0ms clang++ 14.0.0
cpp 7-m.cpp 75ms 0.8ms 3.5MB 127ms 0ms clang++ 14.0.0
cpp 8-m.cpp 75ms 0.6ms 1.3MB 127ms 0ms g++ 11.3.0
cpp 7-m.cpp 76ms 0.9ms 1.3MB 130ms 0ms g++ 11.3.0
cpp 6-im.cpp 150ms 0.9ms 5.2MB 270ms 0ms clang++ 14.0.0
cpp 6-im.cpp 152ms 2.2ms 1.3MB 280ms 0ms g++ 11.3.0