Programming Language and compiler
Benchmarks

Nim VS C++ benchmarks

Current benchmark data was generated on Wed Jan 22 2025, 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.)

binarytrees

Input: 18

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 781ms 16ms 34.9MB 757ms 10ms nim 2.2.0
nim 2.nim 959ms 4.6ms 35.2MB 943ms 3ms nim/clang 2.2.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 72ms 1.1ms 5.5MB 60ms 0ms nim 2.2.0
nim 2.nim 91ms 1.4ms 5.8MB 80ms 0ms nim/clang 2.2.0

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim timeout 0.0ms 545.4MB 2453ms 2093ms nim 2.2.0
nim 1.nim timeout 0.0ms 553.8MB 2483ms 2057ms nim/clang 2.2.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 4399ms 8.7ms 518.7MB 2090ms 1880ms nim/clang 2.2.0
nim 1.nim 4558ms 9.6ms 518.3MB 2237ms 1890ms nim 2.2.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 185ms 2.3ms 1.5MB 177ms 0ms nim 2.2.0
nim 2.nim 238ms 0.8ms 1.8MB 227ms 0ms nim/clang 2.2.0
nim 1.nim 578ms 7.8ms 1.8MB 453ms 110ms nim/clang 2.2.0
nim 1.nim 599ms 1.3ms 1.5MB 473ms 110ms nim 2.2.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 20ms 0.3ms 1.5MB 10ms 0ms nim 2.2.0
nim 2.nim 26ms 0.3ms 1.8MB 13ms 0ms nim/clang 2.2.0
nim 1.nim 60ms 0.5ms 1.8MB 37ms 10ms nim/clang 2.2.0
nim 1.nim 62ms 0.1ms 1.5MB 40ms 10ms nim 2.2.0

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
nim 1.nim 1.1ms 0.1ms 1.6MB 0ms 0ms nim 2.2.0
nim 1.nim 1.2ms 0.1ms 1.9MB 0ms 0ms nim/clang 2.2.0
cpp 1.cpp 1.5ms 0.1ms 2.3MB 0ms 0ms clang++ 14.0.0-1ubuntu1.1

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 977ms 12ms 98.8MB 270ms 683ms nim/clang 2.2.0
nim 1.nim 996ms 26ms 99.2MB 277ms 697ms nim 2.2.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 163ms 5.2ms 17.8MB 47ms 100ms nim 2.2.0
nim 1.nim 163ms 3.8ms 18.2MB 33ms 113ms nim/clang 2.2.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 110ms 1.6ms 1.6MB 100ms 0ms nim/clang 2.2.0
nim 2.nim 114ms 0.5ms 1.4MB 103ms 0ms nim 2.2.0
nim 1.nim timeout 0.0ms 1.3MB 4990ms 0ms nim 2.2.0
nim 1.nim timeout 0.0ms 1.5MB 4990ms 0ms nim/clang 2.2.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 323ms 4.9ms 1.6MB 313ms 0ms nim/clang 2.2.0
nim 2.nim 337ms 4.4ms 1.4MB 323ms 0ms nim 2.2.0
nim 1.nim timeout 0.0ms 1.3MB 4990ms 0ms nim 2.2.0
nim 1.nim timeout 0.0ms 1.5MB 4987ms 0ms nim/clang 2.2.0

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 49ms 1.1ms 1.5MB 40ms 0ms nim/clang 2.2.0
nim 2.nim 50ms 0.3ms 1.3MB 40ms 0ms nim 2.2.0
nim 1.nim 493ms 4.9ms 1.5MB 480ms 0ms nim/clang 2.2.0
nim 1.nim 519ms 32ms 1.3MB 510ms 0ms nim 2.2.0

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 387ms 2.3ms 4.8MB 373ms 0ms nim/clang 2.2.0
nim 1.nim 577ms 1.3ms 4.7MB 567ms 0ms nim 2.2.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 18ms 0.5ms 1.9MB 10ms 0ms nim/clang 2.2.0
nim 1.nim 27ms 1.3ms 1.6MB 20ms 0ms nim 2.2.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 559ms 9.0ms 34.9MB 540ms 7ms nim 2.2.0
nim 1.nim 622ms 12ms 34.7MB 607ms 3ms nim/clang 2.2.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 117ms 1.1ms 9.6MB 103ms 0ms nim 2.2.0
nim 1.nim 131ms 5.5ms 9.9MB 113ms 0ms nim/clang 2.2.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 166ms 0.1ms 1.5MB 160ms 0ms g++ 11.4.0
cpp 0-i.cpp 170ms 0.6ms 2.3MB 160ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 1.cpp 313ms 1.7ms 1.8MB 303ms 0ms g++ 11.4.0
cpp 1.cpp 313ms 1.0ms 2.3MB 300ms 0ms clang++ 14.0.0-1ubuntu1.1
nim 2.nim 319ms 2.1ms 1.8MB 310ms 0ms nim 2.2.0
nim 2.nim 341ms 2.4ms 2.0MB 330ms 0ms nim/clang 2.2.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 19ms 0.1ms 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
cpp 1.cpp 34ms 0.6ms 2.3MB 27ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 1.cpp 34ms 0.8ms 1.8MB 23ms 0ms g++ 11.4.0
nim 2.nim 35ms 1.0ms 1.8MB 27ms 0ms nim 2.2.0
nim 2.nim 36ms 0.6ms 2.0MB 30ms 0ms nim/clang 2.2.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 276ms 7.5ms 41.5MB 263ms 0ms nim 2.2.0
nim 1.nim 313ms 4.8ms 41.8MB 297ms 0ms nim/clang 2.2.0
cpp 1.cpp 483ms 3.5ms 7.3MB 470ms 0ms g++ 11.4.0
cpp 1.cpp 526ms 1.4ms 7.7MB 513ms 0ms clang++ 14.0.0-1ubuntu1.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 51ms 1.2ms 11.5MB 40ms 0ms nim 2.2.0
nim 1.nim 61ms 1.1ms 11.7MB 50ms 0ms nim/clang 2.2.0
cpp 1.cpp 121ms 3.9ms 3.6MB 107ms 0ms g++ 11.4.0
cpp 1.cpp 132ms 1.8ms 4.0MB 123ms 0ms clang++ 14.0.0-1ubuntu1.1

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 1621ms 2.5ms 151.6MB 1577ms 23ms nim/clang 2.2.0
nim 1.nim 1646ms 1.9ms 152.0MB 1603ms 23ms nim 2.2.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 174ms 0.4ms 17.6MB 160ms 0ms nim/clang 2.2.0
nim 1.nim 175ms 2.7ms 16.5MB 160ms 0ms nim 2.2.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 471ms 6.8ms 7.6MB 1820ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 8-m.cpp 488ms 8.2ms 4.2MB 1883ms 0ms g++ 11.4.0
cpp 6-im.cpp 920ms 3.4ms 7.4MB 3587ms 7ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 925ms 1.0ms 4.2MB 3613ms 0ms g++ 11.4.0
nim 1.nim 3573ms 2.3ms 1.6MB 3560ms 0ms nim/clang 2.2.0
nim 1.nim 3597ms 4.0ms 1.4MB 3587ms 0ms nim 2.2.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 129ms 6.4ms 7.4MB 460ms 3ms clang++ 14.0.0-1ubuntu1.1
cpp 8-m.cpp 129ms 0.3ms 4.1MB 477ms 0ms g++ 11.4.0
cpp 6-im.cpp 244ms 4.5ms 4.2MB 917ms 0ms g++ 11.4.0
cpp 6-im.cpp 246ms 5.8ms 7.3MB 917ms 0ms clang++ 14.0.0-1ubuntu1.1
nim 1.nim 895ms 0.4ms 1.5MB 880ms 0ms nim/clang 2.2.0
nim 1.nim 898ms 1.4ms 1.3MB 887ms 0ms nim 2.2.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 40ms 1.9ms 7.4MB 110ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 8-m.cpp 40ms 0.7ms 4.0MB 127ms 0ms g++ 11.4.0
cpp 6-im.cpp 67ms 0.7ms 7.1MB 227ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 68ms 0.6ms 4.0MB 240ms 0ms g++ 11.4.0
nim 1.nim 226ms 0.5ms 1.5MB 213ms 0ms nim/clang 2.2.0
nim 1.nim 227ms 0.9ms 1.3MB 217ms 0ms nim 2.2.0