Programming Language and compiler
Benchmarks

All Nim benchmarks

Current benchmark data was generated on Mon Apr 14 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

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2.nim 934ms 16ms 34.6MB 917ms 3ms nim 2.2.2
2.nim 960ms 15ms 34.9MB 947ms 0ms nim/clang 2.2.2

Input: 15

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2.nim 88ms 1.6ms 5.5MB 80ms 0ms nim 2.2.2
2.nim 91ms 2.6ms 5.8MB 80ms 0ms nim/clang 2.2.2

coro-prime-sieve

Input: 4000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim timeout 0.0ms 559.4MB 2500ms 2040ms nim 2.2.2
1.nim timeout 0.0ms 555.8MB 2460ms 2080ms nim/clang 2.2.2

Input: 1000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 4313ms 32ms 519.8MB 2100ms 1790ms nim/clang 2.2.2
1.nim 4341ms 20ms 519.4MB 2177ms 1743ms nim 2.2.2

fasta

Input: 2500000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2.nim 187ms 1.4ms 1.5MB 180ms 0ms nim 2.2.2
2.nim 236ms 2.8ms 1.8MB 223ms 0ms nim/clang 2.2.2
1.nim 554ms 2.2ms 1.8MB 453ms 90ms nim/clang 2.2.2
1.nim 575ms 2.2ms 1.5MB 473ms 90ms nim 2.2.2

Input: 250000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2.nim 21ms 0.6ms 1.5MB 10ms 0ms nim 2.2.2
2.nim 26ms 0.3ms 1.8MB 20ms 0ms nim/clang 2.2.2
1.nim 58ms 0.8ms 1.8MB 40ms 0ms nim/clang 2.2.2
1.nim 61ms 0.3ms 1.5MB 40ms 10ms nim 2.2.2

helloworld

Input: QwQ

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 1.1ms 0.1ms 1.5MB 0ms 0ms nim 2.2.2
1.nim 1.1ms 0.1ms 1.9MB 0ms 0ms nim/clang 2.2.2

lru

Input: 1000 1000000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2.nim 110ms 0.4ms 1.4MB 100ms 0ms nim 2.2.2
2.nim 114ms 0.7ms 1.9MB 110ms 0ms nim/clang 2.2.2
1.nim timeout 0.0ms 1.3MB 4990ms 0ms nim 2.2.2
1.nim timeout 0.0ms 1.5MB 4990ms 0ms nim/clang 2.2.2

Input: 1000 3000000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2.nim 326ms 2.2ms 1.4MB 320ms 0ms nim 2.2.2
2.nim 340ms 0.3ms 1.6MB 330ms 0ms nim/clang 2.2.2
1.nim timeout 0.0ms 1.3MB 4990ms 0ms nim 2.2.2
1.nim timeout 0.0ms 1.5MB 4990ms 0ms nim/clang 2.2.2

Input: 100 500000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2.nim 49ms 0.2ms 1.5MB 40ms 0ms nim/clang 2.2.2
2.nim 52ms 1.4ms 1.3MB 43ms 0ms nim 2.2.2
1.nim 446ms 2.7ms 1.5MB 440ms 0ms nim/clang 2.2.2
1.nim 479ms 2.2ms 1.3MB 470ms 0ms nim 2.2.2

mandelbrot

Input: 5000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 386ms 0.2ms 4.7MB 380ms 0ms nim/clang 2.2.2
1.nim 576ms 0.7ms 4.4MB 570ms 0ms nim 2.2.2

Input: 1000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 18ms 0.2ms 1.9MB 10ms 0ms nim/clang 2.2.2
1.nim 26ms 0.9ms 1.6MB 20ms 0ms nim 2.2.2

merkletrees

Input: 17

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 532ms 4.4ms 34.6MB 513ms 0ms nim 2.2.2
1.nim 609ms 7.4ms 34.9MB 593ms 0ms nim/clang 2.2.2

Input: 15

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 113ms 0.7ms 9.6MB 100ms 0ms nim 2.2.2
1.nim 134ms 2.0ms 9.9MB 123ms 0ms nim/clang 2.2.2

nbody

Input: 5000000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2.nim 319ms 0.9ms 1.8MB 310ms 0ms nim 2.2.2
2.nim 342ms 1.8ms 2.0MB 330ms 0ms nim/clang 2.2.2

Input: 500000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2.nim 34ms 0.6ms 1.8MB 30ms 0ms nim 2.2.2
2.nim 38ms 0.5ms 2.0MB 30ms 0ms nim/clang 2.2.2

nsieve

Input: 12

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 289ms 6.8ms 41.5MB 277ms 0ms nim 2.2.2
1.nim 329ms 8.1ms 41.8MB 317ms 0ms nim/clang 2.2.2

Input: 10

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 53ms 2.7ms 11.5MB 40ms 0ms nim 2.2.2
1.nim 56ms 3.9ms 11.8MB 43ms 0ms nim/clang 2.2.2

regex-redux

Input: 2500000_in

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 1632ms 4.8ms 164.1MB 1603ms 20ms nim/clang 2.2.2
1.nim 1698ms 8.9ms 163.9MB 1667ms 13ms nim 2.2.2

Input: 250000_in

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 172ms 1.7ms 20.9MB 160ms 0ms nim/clang 2.2.2
1.nim 178ms 1.9ms 20.6MB 163ms 0ms nim 2.2.2

spectral-norm

Input: 8000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 3587ms 0.7ms 1.6MB 3580ms 0ms nim/clang 2.2.2
1.nim 3592ms 2.0ms 1.4MB 3580ms 0ms nim 2.2.2

Input: 4000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 900ms 0.9ms 1.5MB 890ms 0ms nim/clang 2.2.2
1.nim 902ms 2.5ms 1.3MB 890ms 0ms nim 2.2.2

Input: 2000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 227ms 0.4ms 1.5MB 220ms 0ms nim/clang 2.2.2
1.nim 227ms 1.0ms 1.3MB 220ms 0ms nim 2.2.2