Programming Language and compiler
Benchmarks

All Nim benchmarks

Current benchmark data was generated on Sun Jun 01 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 779ms 1.2ms 34.4MB 760ms 3ms nim 2.2.4
2.nim 963ms 9.3ms 35.2MB 940ms 10ms nim/clang 2.2.4

Input: 15

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2.nim 75ms 4.0ms 5.5MB 63ms 0ms nim 2.2.4
2.nim 91ms 2.7ms 5.8MB 80ms 0ms nim/clang 2.2.4

coro-prime-sieve

Input: 4000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim timeout 0.0ms 574.3MB 2627ms 1900ms nim 2.2.4
1.nim timeout 0.0ms 574.8MB 2630ms 1897ms nim/clang 2.2.4

Input: 1000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 4103ms 11ms 519.8MB 2090ms 1590ms nim/clang 2.2.4
1.nim 4106ms 11ms 519.3MB 2163ms 1517ms nim 2.2.4

fasta

Input: 2500000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2.nim 189ms 1.2ms 1.5MB 180ms 0ms nim 2.2.4
2.nim 241ms 2.6ms 1.8MB 230ms 0ms nim/clang 2.2.4
1.nim 535ms 1.0ms 1.8MB 430ms 90ms nim/clang 2.2.4
1.nim 558ms 2.5ms 1.5MB 473ms 67ms nim 2.2.4

Input: 250000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2.nim 22ms 0.1ms 1.5MB 13ms 0ms nim 2.2.4
2.nim 27ms 1.0ms 1.8MB 20ms 0ms nim/clang 2.2.4
1.nim 57ms 0.5ms 1.8MB 40ms 3ms nim/clang 2.2.4
1.nim 57ms 0.2ms 1.5MB 40ms 3ms nim 2.2.4

helloworld

Input: QwQ

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 0.9ms 0.0ms 1.5MB 0ms 0ms nim 2.2.4
1.nim 1.1ms 0.0ms 1.9MB 0ms 0ms nim/clang 2.2.4

lru

Input: 1000 1000000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2.nim 111ms 2.3ms 1.6MB 100ms 0ms nim/clang 2.2.4
2.nim 114ms 1.7ms 1.4MB 110ms 0ms nim 2.2.4
1.nim timeout 0.0ms 1.3MB 4990ms 0ms nim 2.2.4
1.nim timeout 0.0ms 1.5MB 4990ms 0ms nim/clang 2.2.4

Input: 1000 3000000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2.nim 328ms 1.4ms 1.6MB 320ms 0ms nim/clang 2.2.4
2.nim 333ms 1.4ms 1.4MB 323ms 0ms nim 2.2.4
1.nim timeout 0.0ms 1.3MB 4990ms 0ms nim 2.2.4
1.nim timeout 0.0ms 1.5MB 4990ms 0ms nim/clang 2.2.4

Input: 100 500000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2.nim 48ms 0.6ms 1.5MB 40ms 0ms nim/clang 2.2.4
2.nim 51ms 0.8ms 1.3MB 40ms 0ms nim 2.2.4
1.nim 476ms 7.0ms 1.5MB 467ms 0ms nim/clang 2.2.4
1.nim 480ms 4.8ms 1.3MB 473ms 0ms nim 2.2.4

mandelbrot

Input: 5000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 389ms 1.0ms 4.8MB 380ms 0ms nim/clang 2.2.4
1.nim 578ms 2.7ms 4.5MB 567ms 0ms nim 2.2.4

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 2.2.4
1.nim 26ms 0.6ms 1.6MB 20ms 0ms nim 2.2.4

merkletrees

Input: 17

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 546ms 4.1ms 33.9MB 530ms 3ms nim 2.2.4
1.nim 627ms 11ms 35.2MB 607ms 10ms nim/clang 2.2.4

Input: 15

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 119ms 2.2ms 9.6MB 110ms 0ms nim 2.2.4
1.nim 137ms 5.9ms 9.9MB 123ms 0ms nim/clang 2.2.4

nbody

Input: 5000000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2.nim 318ms 0.5ms 1.8MB 310ms 0ms nim 2.2.4
2.nim 344ms 2.8ms 2.0MB 337ms 0ms nim/clang 2.2.4

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 2.2.4
2.nim 37ms 1.1ms 2.0MB 30ms 0ms nim/clang 2.2.4

nsieve

Input: 12

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 264ms 6.1ms 41.5MB 250ms 0ms nim 2.2.4
1.nim 316ms 7.7ms 41.8MB 300ms 0ms nim/clang 2.2.4

Input: 10

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 52ms 2.1ms 11.5MB 47ms 0ms nim 2.2.4
1.nim 63ms 5.6ms 11.8MB 53ms 0ms nim/clang 2.2.4

regex-redux

Input: 2500000_in

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 1643ms 3.6ms 152.4MB 1610ms 20ms nim/clang 2.2.4
1.nim 1672ms 3.8ms 152.1MB 1640ms 20ms nim 2.2.4

Input: 250000_in

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 174ms 2.8ms 16.8MB 160ms 0ms nim/clang 2.2.4
1.nim 176ms 2.8ms 17.4MB 160ms 0ms nim 2.2.4

spectral-norm

Input: 8000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 3587ms 1.2ms 1.6MB 3580ms 0ms nim/clang 2.2.4
1.nim 3604ms 3.0ms 1.8MB 3593ms 0ms nim 2.2.4

Input: 4000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 898ms 0.5ms 1.5MB 890ms 0ms nim/clang 2.2.4
1.nim 903ms 2.7ms 1.3MB 893ms 0ms nim 2.2.4

Input: 2000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 226ms 0.4ms 1.5MB 220ms 0ms nim/clang 2.2.4
1.nim 229ms 1.5ms 1.3MB 220ms 0ms nim 2.2.4