C++ VS C benchmarks

Current benchmark data was generated on Thu Feb 01 2024, 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 404ms 1.1ms 4.7MB 1547ms 0ms g++ 11.4.0
cpp 1-im.cpp 407ms 3.0ms 7.9MB 1560ms 7ms clang++ 14.0.0-1ubuntu1.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1-im.cpp 43ms 0.6ms 5.9MB 133ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 1-im.cpp 43ms 0.4ms 4.5MB 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
c 1.c 1.1ms 0.1ms 1.4MB 0ms 0ms zigcc 0.12.0-dev.2341+92211135f
c 1.c 1.3ms 0.1ms 2.1MB 0ms 0ms gcc 13.2.0
cpp 1.cpp 1.4ms 0.1ms 2.3MB 0ms 0ms clang++ 14.0.0-1ubuntu1.1
c 1.c 1.5ms 0.3ms 2.1MB 0ms 0ms clang 14.0.0-1ubuntu1.1

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 167ms 0.1ms 1.5MB 160ms 0ms g++ 11.4.0
cpp 0-i.cpp 172ms 3.6ms 2.3MB 163ms 0ms clang++ 14.0.0-1ubuntu1.1
c 8-i.c 245ms 0.5ms 1.5MB 233ms 0ms zigcc 0.12.0-dev.2341+92211135f
c 8-i.c 255ms 1.1ms 2.3MB 243ms 0ms gcc 13.2.0
c 5.c 297ms 0.4ms 1.5MB 287ms 0ms zigcc 0.12.0-dev.2341+92211135f
c 8-i.c 301ms 1.9ms 2.1MB 290ms 0ms clang 14.0.0-1ubuntu1.1
c 2.c 309ms 0.5ms 2.3MB 300ms 0ms gcc 13.2.0
c 2.c 311ms 1.1ms 1.5MB 300ms 0ms zigcc 0.12.0-dev.2341+92211135f
c 5.c 311ms 1.0ms 2.3MB 300ms 0ms gcc 13.2.0
cpp 1.cpp 313ms 1.4ms 1.9MB 300ms 0ms g++ 11.4.0
cpp 1.cpp 314ms 1.2ms 2.3MB 307ms 0ms clang++ 14.0.0-1ubuntu1.1
c 5.c 314ms 1.5ms 2.1MB 303ms 0ms clang 14.0.0-1ubuntu1.1
c 2.c 318ms 3.6ms 2.1MB 303ms 0ms clang 14.0.0-1ubuntu1.1

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 19ms 0.2ms 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
c 8-i.c 27ms 0.1ms 1.5MB 20ms 0ms zigcc 0.12.0-dev.2341+92211135f
c 8-i.c 28ms 0.5ms 2.3MB 20ms 0ms gcc 13.2.0
c 5.c 32ms 0.4ms 1.5MB 20ms 0ms zigcc 0.12.0-dev.2341+92211135f
c 2.c 33ms 0.3ms 2.3MB 23ms 0ms gcc 13.2.0
c 8-i.c 33ms 1.6ms 2.1MB 27ms 0ms clang 14.0.0-1ubuntu1.1
c 5.c 33ms 0.5ms 2.3MB 27ms 0ms gcc 13.2.0
cpp 1.cpp 34ms 0.4ms 2.3MB 20ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 1.cpp 34ms 0.9ms 1.8MB 27ms 0ms g++ 11.4.0
c 2.c 34ms 0.8ms 1.5MB 27ms 0ms zigcc 0.12.0-dev.2341+92211135f
c 2.c 34ms 0.9ms 2.1MB 27ms 0ms clang 14.0.0-1ubuntu1.1
c 5.c 34ms 1.1ms 2.1MB 27ms 0ms clang 14.0.0-1ubuntu1.1

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1.c 283ms 1.3ms 41.1MB 267ms 0ms gcc 13.2.0
c 1.c 287ms 7.5ms 40.8MB 273ms 0ms clang 14.0.0-1ubuntu1.1
c 1.c 295ms 2.4ms 40.3MB 273ms 3ms zigcc 0.12.0-dev.2341+92211135f
cpp 1.cpp 484ms 2.6ms 7.3MB 470ms 0ms g++ 11.4.0
cpp 1.cpp 526ms 2.3ms 7.8MB 513ms 0ms clang++ 14.0.0-1ubuntu1.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1.c 54ms 0.5ms 11.8MB 40ms 0ms gcc 13.2.0
c 1.c 58ms 1.7ms 11.5MB 47ms 0ms clang 14.0.0-1ubuntu1.1
c 1.c 59ms 1.3ms 11.0MB 47ms 0ms zigcc 0.12.0-dev.2341+92211135f
cpp 1.cpp 120ms 1.4ms 3.6MB 110ms 0ms g++ 11.4.0
cpp 1.cpp 131ms 1.3ms 4.1MB 120ms 0ms clang++ 14.0.0-1ubuntu1.1

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 479ms 0.8ms 4.2MB 1863ms 0ms g++ 11.4.0
cpp 8-m.cpp 482ms 26ms 7.3MB 1840ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 916ms 3.0ms 5.3MB 3587ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 917ms 3.4ms 4.3MB 3607ms 0ms g++ 11.4.0
c 4-m.c 947ms 11ms 4.1MB 3703ms 0ms gcc 13.2.0
c 6-im.c 981ms 47ms 4.1MB 3790ms 0ms gcc 13.2.0
c 6-im.c 1003ms 11ms 9.1MB 3920ms 3ms clang 14.0.0-1ubuntu1.1
c 4-m.c 1117ms 3.7ms 5.1MB 4367ms 10ms clang 14.0.0-1ubuntu1.1
c 5-im.c 1145ms 6.7ms 4.1MB 4493ms 0ms gcc 13.2.0
c 5-im.c 1335ms 18ms 5.3MB 5220ms 13ms clang 14.0.0-1ubuntu1.1
c 3-m.c 1825ms 3.8ms 7.3MB 7183ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 1933ms 0.6ms 4.1MB 7637ms 3ms gcc 13.2.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 126ms 0.2ms 7.3MB 450ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 8-m.cpp 128ms 0.2ms 4.1MB 477ms 0ms g++ 11.4.0
cpp 6-im.cpp 238ms 0.4ms 5.4MB 890ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 242ms 4.2ms 4.2MB 907ms 0ms g++ 11.4.0
c 4-m.c 246ms 0.5ms 4.1MB 937ms 0ms gcc 13.2.0
c 6-im.c 252ms 6.4ms 4.0MB 957ms 0ms gcc 13.2.0
c 6-im.c 258ms 0.1ms 9.2MB 973ms 3ms clang 14.0.0-1ubuntu1.1
c 4-m.c 288ms 1.9ms 7.0MB 1090ms 3ms clang 14.0.0-1ubuntu1.1
c 5-im.c 297ms 1.3ms 4.0MB 1130ms 0ms gcc 13.2.0
c 5-im.c 340ms 0.0ms 7.3MB 1300ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 462ms 0.4ms 5.3MB 1787ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 487ms 1.0ms 4.0MB 1893ms 0ms gcc 13.2.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 38ms 0.6ms 7.3MB 107ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 8-m.cpp 44ms 8.7ms 4.0MB 140ms 0ms g++ 11.4.0
cpp 6-im.cpp 67ms 0.9ms 5.4MB 227ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 68ms 0.2ms 4.2MB 237ms 0ms g++ 11.4.0
c 4-m.c 69ms 0.7ms 4.1MB 243ms 0ms gcc 13.2.0
c 6-im.c 70ms 0.0ms 4.0MB 247ms 0ms gcc 13.2.0
c 6-im.c 72ms 1.1ms 7.1MB 247ms 0ms clang 14.0.0-1ubuntu1.1
c 4-m.c 80ms 0.5ms 5.1MB 280ms 0ms clang 14.0.0-1ubuntu1.1
c 5-im.c 83ms 0.5ms 4.0MB 300ms 0ms gcc 13.2.0
c 5-im.c 109ms 28ms 5.2MB 363ms 3ms clang 14.0.0-1ubuntu1.1
c 3-m.c 124ms 0.7ms 7.0MB 447ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 129ms 1.4ms 4.0MB 480ms 0ms gcc 13.2.0