Programming Language and compiler
Benchmarks

Nim VS C 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.)

binarytrees

Input: 18

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 741ms 8.3ms 34.9MB 727ms 0ms nim 2.2.0
nim 2.nim 919ms 4.1ms 34.7MB 900ms 7ms nim/clang 2.2.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 67ms 0.5ms 5.5MB 57ms 0ms nim 2.2.0
nim 2.nim 85ms 2.2ms 5.8MB 77ms 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 561.4MB 2450ms 2080ms nim 2.2.0
nim 1.nim timeout 0.0ms 570.6MB 2543ms 1987ms nim/clang 2.2.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 4127ms 12ms 519.8MB 2037ms 1663ms nim/clang 2.2.0
nim 1.nim 4262ms 22ms 519.3MB 2010ms 1827ms nim 2.2.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 174ms 1.9ms 1.5MB 160ms 0ms nim 2.2.0
nim 2.nim 226ms 6.1ms 1.8MB 213ms 0ms nim/clang 2.2.0
nim 1.nim 542ms 6.4ms 1.8MB 420ms 110ms nim/clang 2.2.0
nim 1.nim 569ms 4.4ms 1.5MB 470ms 87ms nim 2.2.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 20ms 0.4ms 1.5MB 10ms 0ms nim 2.2.0
nim 2.nim 25ms 1.4ms 1.8MB 17ms 0ms nim/clang 2.2.0
nim 1.nim 58ms 0.7ms 1.8MB 30ms 17ms nim/clang 2.2.0
nim 1.nim 60ms 2.1ms 1.5MB 37ms 10ms nim 2.2.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1.c 0.9ms 0.0ms 1.4MB 0ms 0ms zigcc 0.13.0
nim 1.nim 1.0ms 0.0ms 1.6MB 0ms 0ms nim 2.2.0
nim 1.nim 1.1ms 0.1ms 1.8MB 0ms 0ms nim/clang 2.2.0
c 1.c 1.2ms 0.0ms 2.1MB 0ms 0ms gcc 14.2.0
c 1.c 1.3ms 0.2ms 2.1MB 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 930ms 5.9ms 99.3MB 260ms 647ms nim 2.2.0
nim 1.nim 934ms 16ms 99.4MB 237ms 673ms nim/clang 2.2.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 152ms 5.5ms 18.1MB 30ms 107ms nim/clang 2.2.0
nim 1.nim 155ms 3.4ms 18.2MB 37ms 100ms nim 2.2.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 105ms 4.1ms 1.6MB 97ms 0ms nim/clang 2.2.0
nim 2.nim 108ms 2.2ms 1.8MB 100ms 0ms nim 2.2.0
nim 1.nim timeout 0.0ms 1.3MB 4987ms 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 307ms 6.6ms 1.6MB 297ms 0ms nim/clang 2.2.0
nim 2.nim 319ms 3.0ms 1.4MB 310ms 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: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 46ms 1.6ms 1.8MB 40ms 0ms nim/clang 2.2.0
nim 2.nim 49ms 1.9ms 1.5MB 40ms 0ms nim 2.2.0
nim 1.nim 463ms 5.7ms 1.5MB 450ms 0ms nim/clang 2.2.0
nim 1.nim 467ms 5.4ms 1.3MB 453ms 0ms nim 2.2.0

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1-mffi.c 207ms 11ms 9.4MB 763ms 10ms clang 14.0.0-1ubuntu1.1
c 1-mffi.c 257ms 3.9ms 6.6MB 780ms 0ms gcc 14.2.0
nim 1.nim 366ms 3.5ms 4.8MB 353ms 0ms nim/clang 2.2.0
c 1-mffi.c 410ms 4.7ms 6.0MB 397ms 0ms zigcc 0.13.0
c 1-ffi.c 411ms 7.0ms 6.0MB 403ms 0ms zigcc 0.13.0
c 1-ffi.c 429ms 6.2ms 6.7MB 417ms 0ms clang 14.0.0-1ubuntu1.1
c 1-ffi.c 509ms 5.2ms 6.6MB 500ms 0ms gcc 14.2.0
nim 1.nim 542ms 1.7ms 4.5MB 533ms 0ms nim 2.2.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1-mffi.c 15ms 0.9ms 8.5MB 23ms 0ms clang 14.0.0-1ubuntu1.1
nim 1.nim 18ms 0.5ms 1.9MB 10ms 0ms nim/clang 2.2.0
c 1-ffi.c 19ms 0.1ms 3.0MB 10ms 0ms zigcc 0.13.0
c 1-mffi.c 19ms 0.1ms 3.0MB 10ms 0ms zigcc 0.13.0
c 1-ffi.c 21ms 0.1ms 3.8MB 10ms 0ms clang 14.0.0-1ubuntu1.1
c 1-mffi.c 23ms 1.2ms 5.6MB 60ms 0ms gcc 14.2.0
c 1-ffi.c 24ms 0.3ms 3.6MB 17ms 0ms gcc 14.2.0
nim 1.nim 25ms 0.8ms 1.8MB 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 520ms 10ms 34.9MB 497ms 7ms nim 2.2.0
nim 1.nim 578ms 6.2ms 34.7MB 553ms 10ms nim/clang 2.2.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 112ms 2.9ms 9.6MB 100ms 0ms nim 2.2.0
nim 1.nim 124ms 3.0ms 9.9MB 110ms 0ms nim/clang 2.2.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 8-i.c 233ms 2.3ms 1.5MB 223ms 0ms zigcc 0.13.0
c 5.c 280ms 2.5ms 1.5MB 270ms 0ms zigcc 0.13.0
c 8-i.c 289ms 1.5ms 2.1MB 280ms 0ms clang 14.0.0-1ubuntu1.1
c 2.c 291ms 2.9ms 2.3MB 280ms 0ms gcc 14.2.0
c 2.c 297ms 4.6ms 1.5MB 287ms 0ms zigcc 0.13.0
c 5.c 300ms 5.4ms 2.3MB 287ms 0ms gcc 14.2.0
c 5.c 301ms 3.6ms 2.1MB 293ms 0ms clang 14.0.0-1ubuntu1.1
nim 2.nim 302ms 2.8ms 1.8MB 290ms 0ms nim 2.2.0
c 2.c 303ms 3.9ms 2.1MB 293ms 0ms clang 14.0.0-1ubuntu1.1
c 8-i.c 317ms 4.6ms 2.3MB 307ms 0ms gcc 14.2.0
nim 2.nim 330ms 8.5ms 2.0MB 320ms 0ms nim/clang 2.2.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 8-i.c 26ms 0.1ms 1.5MB 20ms 0ms zigcc 0.13.0
c 5.c 30ms 0.2ms 1.5MB 20ms 0ms zigcc 0.13.0
c 8-i.c 30ms 0.4ms 2.1MB 20ms 0ms clang 14.0.0-1ubuntu1.1
c 2.c 31ms 0.4ms 1.5MB 20ms 0ms zigcc 0.13.0
c 2.c 31ms 0.4ms 2.3MB 20ms 0ms gcc 14.2.0
c 5.c 32ms 0.8ms 2.1MB 20ms 0ms clang 14.0.0-1ubuntu1.1
c 5.c 32ms 0.5ms 2.3MB 20ms 0ms gcc 14.2.0
nim 2.nim 32ms 0.5ms 1.8MB 20ms 0ms nim 2.2.0
c 2.c 33ms 1.7ms 2.1MB 23ms 0ms clang 14.0.0-1ubuntu1.1
c 8-i.c 33ms 0.3ms 2.3MB 23ms 0ms gcc 14.2.0
nim 2.nim 35ms 0.9ms 2.0MB 23ms 0ms nim/clang 2.2.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1.c 247ms 8.8ms 40.9MB 227ms 3ms gcc 14.2.0
c 1.c 249ms 8.5ms 40.8MB 230ms 3ms clang 14.0.0-1ubuntu1.1
nim 1.nim 252ms 0.5ms 41.5MB 240ms 0ms nim 2.2.0
c 1.c 261ms 8.3ms 40.3MB 243ms 0ms zigcc 0.13.0
nim 1.nim 293ms 2.6ms 41.8MB 280ms 0ms nim/clang 2.2.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1.c 49ms 2.3ms 11.8MB 37ms 0ms gcc 14.2.0
c 1.c 50ms 3.8ms 11.5MB 40ms 0ms clang 14.0.0-1ubuntu1.1
nim 1.nim 53ms 2.2ms 11.5MB 40ms 0ms nim 2.2.0
c 1.c 55ms 3.7ms 11.0MB 43ms 0ms zigcc 0.13.0
nim 1.nim 60ms 3.6ms 11.8MB 50ms 0ms nim/clang 2.2.0

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 1541ms 6.9ms 152.3MB 1513ms 13ms nim/clang 2.2.0
nim 1.nim 1567ms 8.6ms 151.5MB 1530ms 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 162ms 0.2ms 17.6MB 143ms 3ms nim/clang 2.2.0
nim 1.nim 163ms 1.8ms 17.4MB 153ms 0ms nim 2.2.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 4-m.c 912ms 4.9ms 4.1MB 3580ms 0ms gcc 14.2.0
c 6-im.c 916ms 6.9ms 4.1MB 3603ms 0ms gcc 14.2.0
c 6-im.c 957ms 5.6ms 7.3MB 3750ms 3ms clang 14.0.0-1ubuntu1.1
c 5-im.c 1032ms 4.9ms 4.1MB 4060ms 0ms gcc 14.2.0
c 4-m.c 1101ms 27ms 5.1MB 4260ms 13ms clang 14.0.0-1ubuntu1.1
c 5-im.c 1258ms 3.2ms 5.2MB 4933ms 7ms clang 14.0.0-1ubuntu1.1
c 3-m.c 1730ms 10ms 7.2MB 6810ms 3ms clang 14.0.0-1ubuntu1.1
c 3-m.c 1868ms 12ms 4.1MB 7353ms 7ms gcc 14.2.0
nim 1.nim 3383ms 20ms 1.6MB 3370ms 0ms nim/clang 2.2.0
nim 1.nim 3439ms 35ms 1.4MB 3430ms 0ms nim 2.2.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 4-m.c 242ms 7.9ms 4.0MB 927ms 0ms gcc 14.2.0
c 6-im.c 249ms 5.3ms 5.3MB 937ms 3ms clang 14.0.0-1ubuntu1.1
c 6-im.c 250ms 20ms 4.0MB 937ms 0ms gcc 14.2.0
c 4-m.c 272ms 1.5ms 5.1MB 1027ms 0ms clang 14.0.0-1ubuntu1.1
c 5-im.c 278ms 9.7ms 4.0MB 1050ms 0ms gcc 14.2.0
c 5-im.c 327ms 5.4ms 5.3MB 1250ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 452ms 20ms 7.3MB 1713ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 477ms 2.5ms 4.0MB 1860ms 0ms gcc 14.2.0
nim 1.nim 848ms 4.3ms 1.5MB 837ms 0ms nim/clang 2.2.0
nim 1.nim 860ms 8.6ms 1.3MB 853ms 0ms nim 2.2.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 4-m.c 67ms 0.5ms 4.0MB 233ms 0ms gcc 14.2.0
c 6-im.c 69ms 3.3ms 7.3MB 240ms 0ms clang 14.0.0-1ubuntu1.1
c 6-im.c 70ms 6.7ms 4.0MB 240ms 0ms gcc 14.2.0
c 5-im.c 76ms 1.5ms 4.0MB 270ms 0ms gcc 14.2.0
c 4-m.c 83ms 7.1ms 5.0MB 277ms 7ms clang 14.0.0-1ubuntu1.1
c 5-im.c 89ms 2.8ms 5.1MB 320ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 117ms 2.1ms 5.1MB 417ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 126ms 1.7ms 4.0MB 470ms 0ms gcc 14.2.0
nim 1.nim 214ms 1.3ms 1.3MB 203ms 0ms nim 2.2.0
nim 1.nim 217ms 5.1ms 1.5MB 207ms 0ms nim/clang 2.2.0