Programming Language and compiler
Benchmarks

All Nim benchmarks

Current benchmark data was generated on Tue Mar 25 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 909ms 6.8ms 34.6MB 893ms 0ms nim 2.2.2
2.nim 952ms 13ms 34.9MB 937ms 0ms nim/clang 2.2.2

Input: 15

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2.nim 89ms 2.7ms 5.5MB 80ms 0ms nim 2.2.2
2.nim 93ms 1.8ms 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 553.5MB 2540ms 2000ms nim 2.2.2
1.nim timeout 0.0ms 559.8MB 2507ms 2027ms nim/clang 2.2.2

Input: 1000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 4311ms 7.9ms 519.8MB 2117ms 1770ms nim/clang 2.2.2
1.nim 4368ms 20ms 519.3MB 2157ms 1783ms nim 2.2.2

fasta

Input: 2500000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2.nim 189ms 1.0ms 1.5MB 180ms 0ms nim 2.2.2
2.nim 235ms 1.2ms 1.8MB 227ms 0ms nim/clang 2.2.2
1.nim 555ms 2.0ms 1.8MB 453ms 87ms nim/clang 2.2.2
1.nim 580ms 1.8ms 1.5MB 467ms 103ms nim 2.2.2

Input: 250000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2.nim 21ms 1.0ms 1.5MB 10ms 0ms nim 2.2.2
2.nim 26ms 0.5ms 1.8MB 20ms 0ms nim/clang 2.2.2
1.nim 59ms 1.4ms 1.8MB 40ms 3ms nim/clang 2.2.2
1.nim 61ms 1.3ms 1.5MB 43ms 3ms nim 2.2.2

helloworld

Input: QwQ

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 1.1ms 0.0ms 1.4MB 0ms 0ms nim 2.2.2
1.nim 1.2ms 0.1ms 1.8MB 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 112ms 1.0ms 1.6MB 100ms 0ms nim/clang 2.2.2
2.nim 112ms 1.7ms 1.8MB 103ms 0ms nim 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 328ms 1.5ms 1.6MB 320ms 0ms nim/clang 2.2.2
2.nim 331ms 2.1ms 1.4MB 320ms 0ms nim 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 50ms 1.8ms 1.5MB 40ms 0ms nim/clang 2.2.2
2.nim 50ms 1.3ms 1.3MB 40ms 0ms nim 2.2.2
1.nim 445ms 9.6ms 1.5MB 437ms 0ms nim/clang 2.2.2
1.nim 480ms 3.4ms 1.3MB 473ms 0ms nim 2.2.2

mandelbrot

Input: 5000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 388ms 0.7ms 4.7MB 380ms 0ms nim/clang 2.2.2
1.nim 577ms 2.5ms 4.4MB 567ms 0ms nim 2.2.2

Input: 1000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 19ms 0.4ms 2.0MB 10ms 0ms nim/clang 2.2.2
1.nim 27ms 1.4ms 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 545ms 5.4ms 34.6MB 527ms 0ms nim 2.2.2
1.nim 618ms 12ms 34.9MB 597ms 3ms nim/clang 2.2.2

Input: 15

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 116ms 0.7ms 9.6MB 100ms 0ms nim 2.2.2
1.nim 134ms 1.4ms 9.9MB 120ms 0ms nim/clang 2.2.2

nbody

Input: 5000000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2.nim 320ms 3.2ms 1.8MB 310ms 0ms nim 2.2.2
2.nim 347ms 6.4ms 2.0MB 337ms 0ms nim/clang 2.2.2

Input: 500000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2.nim 35ms 1.0ms 1.8MB 30ms 0ms nim 2.2.2
2.nim 37ms 1.3ms 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 320ms 5.6ms 41.8MB 307ms 0ms nim/clang 2.2.2
1.nim 330ms 8.4ms 41.5MB 317ms 0ms nim 2.2.2

Input: 10

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 56ms 4.0ms 11.5MB 47ms 0ms nim 2.2.2
1.nim 59ms 4.5ms 11.8MB 50ms 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 1640ms 16ms 164.0MB 1607ms 17ms nim/clang 2.2.2
1.nim 1702ms 8.7ms 163.9MB 1670ms 20ms nim 2.2.2

Input: 250000_in

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 174ms 1.8ms 20.9MB 160ms 0ms nim/clang 2.2.2
1.nim 179ms 0.8ms 20.6MB 160ms 0ms nim 2.2.2

spectral-norm

Input: 8000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 3592ms 5.8ms 1.6MB 3583ms 0ms nim/clang 2.2.2
1.nim 3603ms 11ms 1.4MB 3593ms 0ms nim 2.2.2

Input: 4000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.nim 901ms 1.0ms 1.8MB 890ms 0ms nim 2.2.2
1.nim 902ms 2.9ms 1.5MB 890ms 0ms nim/clang 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 228ms 0.8ms 1.3MB 220ms 0ms nim 2.2.2