Programming Language and compiler
Benchmarks

C++ VS Rust benchmarks

Current benchmark data was generated on Tue Dec 31 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 383ms 1.6ms 4.7MB 1463ms 0ms g++ 11.4.0
rust 3-im.rs 394ms 5.6ms 6.0MB 1513ms 0ms rustc 1.83.0
cpp 1-im.cpp 396ms 27ms 8.0MB 1473ms 3ms clang++ 14.0.0-1ubuntu1.1
rust 5-m.rs 538ms 7.1ms 4.0MB 2067ms 0ms rustc 1.83.0
rust 2-im.rs 597ms 11ms 4.0MB 2270ms 0ms rustc 1.83.0
rust 1-m.rs 928ms 3.9ms 4.0MB 3580ms 3ms rustc 1.83.0
rust 3-i.rs 1420ms 7.0ms 1.9MB 1410ms 0ms rustc 1.83.0
rust 2-i.rs 1659ms 11ms 1.8MB 1647ms 0ms rustc 1.83.0
rust 1.rs 2517ms 13ms 1.8MB 2507ms 0ms rustc 1.83.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-im.rs 38ms 1.2ms 4.0MB 120ms 0ms rustc 1.83.0
cpp 1-im.cpp 40ms 0.7ms 7.9MB 120ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 1-im.cpp 40ms 0.7ms 4.5MB 133ms 0ms g++ 11.4.0
rust 5-m.rs 53ms 1.3ms 6.0MB 160ms 0ms rustc 1.83.0
rust 2-im.rs 60ms 1.7ms 4.0MB 193ms 0ms rustc 1.83.0
rust 1-m.rs 87ms 2.7ms 6.0MB 293ms 0ms rustc 1.83.0
rust 3-i.rs 121ms 4.1ms 1.9MB 113ms 0ms rustc 1.83.0
rust 2-i.rs 144ms 3.2ms 1.8MB 133ms 0ms rustc 1.83.0
rust 1.rs 218ms 6.6ms 1.8MB 207ms 0ms rustc 1.83.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 1.0ms 0.1ms 1.4MB 0ms 0ms g++ 11.4.0
rust 1.rs 1.2ms 0.1ms 1.8MB 0ms 0ms rustc 1.83.0
rust 1.rs 1.2ms 0.1ms 1.8MB 0ms 0ms rustc 1.85.0-nightly
cpp 1.cpp 1.8ms 1.0ms 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 158ms 1.3ms 1.5MB 150ms 0ms g++ 11.4.0
rust 4-i.rs 160ms 3.5ms 1.8MB 150ms 0ms rustc 1.83.0
cpp 0-i.cpp 168ms 2.5ms 2.3MB 160ms 0ms clang++ 14.0.0-1ubuntu1.1
rust 7-i.rs 228ms 2.2ms 1.8MB 220ms 0ms rustc 1.83.0
rust 1.rs 228ms 5.2ms 1.8MB 213ms 0ms rustc 1.83.0
rust 2.rs 263ms 1.3ms 1.8MB 253ms 0ms rustc 1.83.0
rust 3.rs 269ms 1.6ms 1.9MB 257ms 0ms rustc 1.85.0-nightly
cpp 1.cpp 294ms 0.7ms 1.8MB 280ms 0ms g++ 11.4.0
cpp 1.cpp 298ms 3.2ms 2.3MB 287ms 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 17ms 0.2ms 1.5MB 10ms 0ms g++ 11.4.0
rust 4-i.rs 18ms 0.7ms 1.8MB 10ms 0ms rustc 1.83.0
cpp 0-i.cpp 18ms 0.1ms 2.3MB 10ms 0ms clang++ 14.0.0-1ubuntu1.1
rust 1.rs 25ms 0.4ms 1.8MB 17ms 0ms rustc 1.83.0
rust 7-i.rs 25ms 0.7ms 1.8MB 20ms 0ms rustc 1.83.0
rust 2.rs 28ms 0.0ms 1.8MB 20ms 0ms rustc 1.83.0
rust 3.rs 28ms 0.1ms 1.8MB 20ms 0ms rustc 1.85.0-nightly
cpp 1.cpp 32ms 0.4ms 1.8MB 20ms 0ms g++ 11.4.0
cpp 1.cpp 33ms 0.7ms 2.3MB 23ms 0ms clang++ 14.0.0-1ubuntu1.1

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 277ms 3.8ms 40.9MB 267ms 0ms rustc 1.83.0
rust 2.rs 307ms 3.2ms 6.7MB 290ms 0ms rustc 1.83.0
cpp 1.cpp 463ms 15ms 7.3MB 447ms 0ms g++ 11.4.0
cpp 1.cpp 499ms 2.6ms 7.7MB 487ms 0ms clang++ 14.0.0-1ubuntu1.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 59ms 0.6ms 11.6MB 47ms 0ms rustc 1.83.0
rust 2.rs 75ms 0.2ms 2.9MB 70ms 0ms rustc 1.83.0
cpp 1.cpp 113ms 2.5ms 3.6MB 100ms 0ms g++ 11.4.0
cpp 1.cpp 125ms 0.9ms 4.0MB 113ms 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 458ms 3.4ms 4.2MB 1780ms 0ms g++ 11.4.0
cpp 8-m.cpp 459ms 22ms 7.3MB 1757ms 0ms clang++ 14.0.0-1ubuntu1.1
rust 8-m.rs 469ms 0.9ms 4.6MB 1810ms 0ms rustc 1.85.0-nightly
rust 7-m.rs 471ms 4.6ms 4.2MB 1817ms 3ms rustc 1.83.0
cpp 6-im.cpp 876ms 7.8ms 7.4MB 3420ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 885ms 20ms 4.2MB 3437ms 3ms g++ 11.4.0
rust 8.rs 961ms 14ms 2.4MB 950ms 0ms rustc 1.85.0-nightly
rust 2-m.rs 1855ms 2.8ms 4.1MB 7283ms 7ms rustc 1.83.0
rust 7.rs 1994ms 3.4ms 1.9MB 1987ms 0ms rustc 1.83.0
rust 2.rs 3948ms 11ms 2.0MB 3937ms 0ms rustc 1.83.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 118ms 1.8ms 7.4MB 433ms 0ms clang++ 14.0.0-1ubuntu1.1
rust 7-m.rs 121ms 0.3ms 4.1MB 443ms 3ms rustc 1.83.0
rust 8-m.rs 123ms 3.8ms 4.4MB 443ms 0ms rustc 1.85.0-nightly
cpp 8-m.cpp 126ms 5.2ms 4.1MB 463ms 0ms g++ 11.4.0
cpp 6-im.cpp 225ms 2.6ms 7.4MB 847ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 226ms 2.7ms 4.1MB 857ms 0ms g++ 11.4.0
rust 8.rs 240ms 1.0ms 2.1MB 227ms 0ms rustc 1.85.0-nightly
rust 2-m.rs 468ms 6.0ms 4.1MB 1797ms 3ms rustc 1.83.0
rust 7.rs 498ms 3.3ms 1.8MB 490ms 0ms rustc 1.83.0
rust 2.rs 1001ms 10ms 1.9MB 987ms 0ms rustc 1.83.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7-m.rs 34ms 0.6ms 4.1MB 103ms 0ms rustc 1.83.0
rust 8-m.rs 35ms 0.2ms 4.2MB 110ms 0ms rustc 1.85.0-nightly
cpp 8-m.cpp 37ms 0.9ms 4.0MB 117ms 0ms g++ 11.4.0
cpp 8-m.cpp 42ms 11ms 7.4MB 117ms 0ms clang++ 14.0.0-1ubuntu1.1
rust 8.rs 63ms 1.0ms 2.1MB 50ms 0ms rustc 1.85.0-nightly
cpp 6-im.cpp 64ms 1.6ms 7.3MB 210ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 64ms 0.1ms 4.0MB 227ms 0ms g++ 11.4.0
rust 2-m.rs 123ms 2.3ms 6.1MB 447ms 3ms rustc 1.83.0
rust 7.rs 135ms 1.1ms 1.8MB 123ms 0ms rustc 1.83.0
rust 2.rs 256ms 5.0ms 1.9MB 247ms 0ms rustc 1.83.0