Programming Language and compiler
Benchmarks

D VS Nim benchmarks

Current benchmark data was generated on Thu Jul 13 2023, full log can be found HERE

CONTRIBUTIONS are WELCOME!

[x86_64][2 cores] Intel(R) Xeon(R) Platinum 8370C CPU @ 2.80GHz (Model 106)

* -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 1955ms 2.8ms 34.1MB 1930ms 10ms nim 1.6.14
nim 2.nim 2105ms 6.7ms 35.0MB 2087ms 7ms nim/clang 1.6.14
d 1.d 2245ms 7.0ms 312.3MB 2157ms 90ms ldc2 1.32.2
d 1.d 3381ms 23ms 314.1MB 3427ms 87ms dmd 2.104.1

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 186ms 1.2ms 5.6MB 177ms 0ms nim 1.6.14
nim 2.nim 194ms 3.4ms 5.7MB 183ms 0ms nim/clang 1.6.14
d 1.d 248ms 1.3ms 206.3MB 187ms 47ms ldc2 1.32.2
d 1.d 343ms 1.5ms 209.2MB 263ms 60ms dmd 2.104.1

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d timeout 0.0ms 14.9MB 4977ms 3ms dmd 2.104.1
d 1.d timeout 0.0ms 14.6MB 4963ms 13ms ldc2 1.32.2
nim 1.nim timeout 0.0ms 423.4MB 3330ms 1317ms nim 1.6.14
nim 1.nim timeout 0.0ms 424.2MB 3350ms 1300ms nim/clang 1.6.14

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 1328ms 8.0ms 8.3MB 1313ms 3ms ldc2 1.32.2
d 1.d 1594ms 11ms 10.3MB 1580ms 3ms dmd 2.104.1
nim 1.nim timeout 0.0ms 421.6MB 3370ms 1283ms nim 1.6.14
nim 1.nim timeout 0.0ms 423.3MB 3447ms 1203ms nim/clang 1.6.14

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 3810ms 0.7ms 7.9MB 3800ms 0ms ldc2 1.32.2
d 1.d 4427ms 5.5ms 9.7MB 4410ms 0ms dmd 2.104.1
nim 1.nim timeout 0.0ms 3.0MB 4990ms 0ms nim 1.6.14
nim 1.nim timeout 0.0ms 3.0MB 4983ms 0ms nim/clang 1.6.14

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 650ms 0.6ms 6.9MB 640ms 0ms ldc2 1.32.2
d 1.d 799ms 0.5ms 9.7MB 783ms 3ms dmd 2.104.1
nim 1.nim timeout 0.0ms 2.3MB 4990ms 0ms nim 1.6.14
nim 1.nim timeout 0.0ms 2.2MB 4983ms 0ms nim/clang 1.6.14

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-im.d 764ms 7.7ms 1.6MB 1467ms 0ms ldc2 1.32.2
d 1-i.d 1437ms 2.6ms 1.5MB 1423ms 0ms ldc2 1.32.2
d 2-im.d 2472ms 20ms 1.6MB 4823ms 0ms ldc2 1.32.2
d 1.d 4308ms 0.9ms 1.5MB 4297ms 0ms ldc2 1.32.2
d 2-i.d 4780ms 2.9ms 1.5MB 4767ms 0ms ldc2 1.32.2
d 1.d 4942ms 3.0ms 2.9MB 4927ms 0ms dmd 2.104.1
d 1-i.d timeout 0.0ms 2.8MB 4987ms 0ms dmd 2.104.1
d 1-im.d timeout 0.0ms 2.9MB 9707ms 3ms dmd 2.104.1
d 2-i.d timeout 0.0ms 2.9MB 4990ms 0ms dmd 2.104.1
d 2-im.d timeout 0.0ms 2.9MB 9800ms 3ms dmd 2.104.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-im.d 73ms 0.7ms 1.6MB 120ms 0ms ldc2 1.32.2
d 1-i.d 122ms 0.6ms 1.5MB 110ms 0ms ldc2 1.32.2
d 2-im.d 215ms 5.5ms 3.1MB 390ms 0ms ldc2 1.32.2
d 1.d 360ms 1.7ms 1.5MB 350ms 0ms ldc2 1.32.2
d 2-i.d 395ms 0.5ms 1.5MB 380ms 0ms ldc2 1.32.2
d 1.d 413ms 1.0ms 2.8MB 403ms 0ms dmd 2.104.1
d 1-im.d 428ms 2.0ms 4.6MB 803ms 0ms dmd 2.104.1
d 1-i.d 807ms 0.7ms 2.7MB 797ms 0ms dmd 2.104.1
d 2-im.d 885ms 158ms 4.9MB 1530ms 0ms dmd 2.104.1
d 2-i.d 1438ms 0.3ms 2.8MB 1423ms 0ms dmd 2.104.1

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 226ms 3.2ms 28.8MB 207ms 3ms ldc2 1.32.2
nim 2.nim 259ms 0.7ms 1.0MB 250ms 0ms nim 1.6.14
nim 2.nim 346ms 1.7ms 1.3MB 330ms 0ms nim/clang 1.6.14
d 1.d 761ms 1.2ms 40.3MB 747ms 3ms dmd 2.104.1
nim 1.nim 785ms 2.8ms 1.0MB 687ms 83ms nim 1.6.14
nim 1.nim 799ms 1.3ms 1.2MB 690ms 90ms nim/clang 1.6.14

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 26ms 1.1ms 7.1MB 20ms 0ms ldc2 1.32.2
nim 2.nim 28ms 0.5ms 1.0MB 20ms 0ms nim 1.6.14
nim 2.nim 36ms 0.3ms 1.3MB 30ms 0ms nim/clang 1.6.14
d 1.d 80ms 0.8ms 12.6MB 67ms 0ms dmd 2.104.1
nim 1.nim 81ms 0.5ms 1.0MB 60ms 7ms nim 1.6.14
nim 1.nim 83ms 0.8ms 1.2MB 70ms 0ms nim/clang 1.6.14

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 1.2ms 0.1ms 1.0MB 0ms 0ms nim 1.6.14
d 1.d 2.1ms 0.6ms 3.0MB 0ms 0ms ldc2 1.32.2
d 1.d 2.7ms 0.7ms 4.8MB 0ms 0ms dmd 2.104.1
nim 1.nim 2.9ms 2.0ms 1.2MB 0ms 0ms nim/clang 1.6.14

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 718ms 6.0ms 94.6MB 340ms 347ms nim/clang 1.6.14
nim 1.nim 722ms 2.7ms 94.2MB 313ms 377ms nim 1.6.14
d 1.d timeout 0.0ms 20.5MB 590ms 427ms dmd 2.104.1
d 2.d timeout 0.0ms 17.7MB 620ms 405ms dmd 2.104.1
d 1.d timeout 0.0ms 16.4MB 380ms 425ms ldc2 1.32.2
d 2.d timeout 0.0ms 14.8MB 430ms 390ms ldc2 1.32.2

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 121ms 1.3ms 18.3MB 50ms 53ms nim/clang 1.6.14
nim 1.nim 124ms 2.1ms 18.0MB 57ms 53ms nim 1.6.14
d 1.d timeout 0.0ms 17.9MB 10ms 0ms dmd 2.104.1
d 2.d timeout 0.0ms 19.4MB 77ms 40ms dmd 2.104.1
d 1.d timeout 0.0ms 15.4MB 50ms 80ms ldc2 1.32.2
d 2.d timeout 0.0ms 14.8MB 70ms 70ms ldc2 1.32.2

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 2.d 76ms 2.3ms 15.4MB 73ms 0ms ldc2 1.32.2
d 2.d 340ms 0.8ms 22.1MB 330ms 0ms dmd 2.104.1

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 2.d 613ms 4.6ms 141.7MB 570ms 30ms ldc2 1.32.2
d 2.d 3697ms 8.0ms 155.8MB 3720ms 30ms dmd 2.104.1

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-m.d 1038ms 4.1ms 60.7MB 1817ms 17ms ldc2 1.32.2
d 1-m.d 4015ms 70ms 53.4MB 7140ms 17ms dmd 2.104.1

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-m.d 134ms 3.5ms 38.6MB 217ms 10ms ldc2 1.32.2
d 1-m.d 424ms 16ms 44.6MB 733ms 10ms dmd 2.104.1

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 145ms 0.9ms 1.2MB 137ms 0ms nim/clang 1.6.14
nim 2.nim 152ms 0.8ms 1.1MB 140ms 0ms nim 1.6.14
d 1.d 176ms 1.5ms 3.8MB 167ms 0ms ldc2 1.32.2
d 1.d 255ms 0.2ms 5.9MB 243ms 0ms dmd 2.104.1
nim 1.nim timeout 0.0ms 1.1MB 4990ms 0ms nim 1.6.14
nim 1.nim timeout 0.0ms 1.2MB 4983ms 0ms nim/clang 1.6.14

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 428ms 0.6ms 1.3MB 417ms 0ms nim/clang 1.6.14
nim 2.nim 450ms 0.8ms 1.1MB 440ms 0ms nim 1.6.14
d 1.d 511ms 1.6ms 3.7MB 500ms 0ms ldc2 1.32.2
d 1.d 754ms 2.8ms 5.6MB 743ms 0ms dmd 2.104.1
nim 1.nim timeout 0.0ms 1.0MB 4987ms 0ms nim 1.6.14
nim 1.nim timeout 0.0ms 1.3MB 4987ms 0ms nim/clang 1.6.14

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 63ms 0.5ms 1.2MB 50ms 0ms nim/clang 1.6.14
nim 2.nim 65ms 1.7ms 1.0MB 57ms 0ms nim 1.6.14
d 1.d 75ms 1.0ms 3.8MB 60ms 0ms ldc2 1.32.2
d 1.d 111ms 0.1ms 5.4MB 100ms 0ms dmd 2.104.1
nim 1.nim 389ms 5.3ms 1.2MB 373ms 0ms nim/clang 1.6.14
nim 1.nim 444ms 3.1ms 1.0MB 430ms 0ms nim 1.6.14

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 570ms 0.4ms 6.6MB 560ms 0ms ldc2 1.32.2
nim 1.nim 656ms 0.7ms 4.8MB 647ms 0ms nim/clang 1.6.14
nim 1.nim 983ms 0.4ms 4.3MB 970ms 0ms nim 1.6.14
d 1.d 2563ms 3.9ms 8.0MB 2550ms 0ms dmd 2.104.1

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 26ms 0.2ms 3.0MB 17ms 0ms ldc2 1.32.2
nim 1.nim 30ms 0.7ms 1.2MB 20ms 0ms nim/clang 1.6.14
nim 1.nim 43ms 0.7ms 1.1MB 30ms 0ms nim 1.6.14
d 1.d 122ms 24ms 4.4MB 110ms 0ms dmd 2.104.1

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 992ms 2.9ms 34.7MB 977ms 0ms nim 1.6.14
nim 1.nim 1065ms 6.2ms 34.5MB 1047ms 3ms nim/clang 1.6.14
d 1.d 1260ms 5.4ms 312.3MB 1167ms 90ms ldc2 1.32.2
d 1.d 2301ms 18ms 313.7MB 2297ms 80ms dmd 2.104.1

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 211ms 1.7ms 9.3MB 197ms 0ms nim 1.6.14
nim 1.nim 229ms 2.5ms 9.5MB 217ms 0ms nim/clang 1.6.14
d 1.d 339ms 2.9ms 312.4MB 223ms 100ms ldc2 1.32.2
d 1.d 555ms 2.9ms 314.2MB 460ms 80ms dmd 2.104.1

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 382ms 0.6ms 1.3MB 370ms 0ms nim 1.6.14
nim 2.nim 411ms 0.8ms 1.3MB 400ms 0ms nim/clang 1.6.14
d 1.d 413ms 0.6ms 1.5MB 400ms 0ms ldc2 1.32.2
d 2.d 424ms 0.0ms 1.5MB 413ms 0ms ldc2 1.32.2
d 1.d 1542ms 2.9ms 2.8MB 1530ms 0ms dmd 2.104.1
d 2.d 2291ms 1.1ms 2.9MB 2280ms 0ms dmd 2.104.1

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 41ms 0.3ms 1.3MB 30ms 0ms nim 1.6.14
nim 2.nim 43ms 0.0ms 1.2MB 30ms 0ms nim/clang 1.6.14
d 1.d 44ms 0.7ms 1.6MB 33ms 0ms ldc2 1.32.2
d 2.d 45ms 0.3ms 1.5MB 37ms 0ms ldc2 1.32.2
d 1.d 157ms 0.7ms 2.9MB 147ms 0ms dmd 2.104.1
d 2.d 237ms 6.9ms 2.9MB 220ms 0ms dmd 2.104.1

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 562ms 13ms 43.1MB 537ms 10ms ldc2 1.32.2
nim 1.nim 568ms 14ms 40.3MB 550ms 0ms nim 1.6.14
d 1.d 607ms 7.4ms 75.9MB 587ms 3ms dmd 2.104.1
nim 2.nim 608ms 6.1ms 6.5MB 597ms 0ms nim/clang 1.6.14
nim 2.nim 633ms 1.1ms 6.1MB 617ms 0ms nim 1.6.14
nim 1.nim 758ms 55ms 41.3MB 743ms 0ms nim/clang 1.6.14
d 2.d 894ms 1.5ms 48.2MB 870ms 13ms ldc2 1.32.2
d 2.d 1533ms 3.0ms 50.2MB 1513ms 7ms dmd 2.104.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 128ms 3.5ms 13.9MB 117ms 0ms ldc2 1.32.2
nim 1.nim 129ms 0.5ms 11.0MB 120ms 0ms nim 1.6.14
nim 1.nim 136ms 0.4ms 11.3MB 123ms 0ms nim/clang 1.6.14
d 1.d 139ms 1.0ms 23.8MB 127ms 0ms dmd 2.104.1
nim 2.nim 142ms 1.0ms 3.3MB 130ms 0ms nim/clang 1.6.14
nim 2.nim 148ms 0.7ms 3.0MB 140ms 0ms nim 1.6.14
d 2.d 212ms 0.9ms 15.0MB 200ms 0ms ldc2 1.32.2
d 2.d 380ms 1.6ms 17.3MB 363ms 0ms dmd 2.104.1

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 3471ms 19ms 7.9MB 3450ms 17ms ldc2 1.32.2
d 1.d timeout 0.0ms 9.9MB 4983ms 7ms dmd 2.104.1
nim 1.nim timeout 0.0ms 5.9MB 4990ms 0ms nim 1.6.14
nim 1.nim timeout 0.0ms 6.0MB 4990ms 0ms nim/clang 1.6.14

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 827ms 1.5ms 7.9MB 813ms 3ms ldc2 1.32.2
d 1.d 1739ms 3.6ms 9.9MB 1727ms 0ms dmd 2.104.1
nim 1.nim timeout 0.0ms 5.8MB 4990ms 0ms nim 1.6.14
nim 1.nim timeout 0.0ms 6.1MB 4983ms 0ms nim/clang 1.6.14

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 3.d 745ms 1.0ms 167.7MB 953ms 50ms ldc2 1.32.2
d 3.d 1588ms 2.9ms 170.2MB 1823ms 40ms dmd 2.104.1
nim 1.nim 2492ms 6.4ms 168.0MB 2437ms 37ms nim/clang 1.6.14
nim 1.nim 2557ms 7.1ms 167.1MB 2500ms 37ms nim 1.6.14

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 3.d 78ms 0.5ms 22.5MB 93ms 0ms ldc2 1.32.2
d 3.d 166ms 1.5ms 27.9MB 173ms 3ms dmd 2.104.1
nim 1.nim 255ms 0.2ms 17.2MB 240ms 0ms nim/clang 1.6.14
nim 1.nim 264ms 1.1ms 16.8MB 250ms 0ms nim 1.6.14

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d timeout 0.0ms 6.4MB 4987ms 0ms dmd 2.104.1
d 1.d timeout 0.0ms 3.9MB 4980ms 10ms ldc2 1.32.2

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 1431ms 6.6ms 3.9MB 1420ms 0ms ldc2 1.32.2
d 1.d 3272ms 38ms 6.2MB 3260ms 0ms dmd 2.104.1

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 4117ms 0.5ms 1.2MB 4103ms 0ms nim/clang 1.6.14
nim 1.nim 4119ms 0.2ms 1.3MB 4110ms 0ms nim 1.6.14
d 1.d 4286ms 2.3ms 3.8MB 4270ms 0ms ldc2 1.32.2
d 1.d 4780ms 4.8ms 5.3MB 4770ms 0ms dmd 2.104.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 1031ms 0.5ms 1.3MB 1020ms 0ms nim/clang 1.6.14
nim 1.nim 1034ms 3.4ms 1.3MB 1020ms 0ms nim 1.6.14
d 1.d 1074ms 0.2ms 3.6MB 1063ms 0ms ldc2 1.32.2
d 1.d 1199ms 0.9ms 5.1MB 1183ms 0ms dmd 2.104.1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 261ms 0.8ms 1.3MB 250ms 0ms nim/clang 1.6.14
nim 1.nim 261ms 1.1ms 1.3MB 250ms 0ms nim 1.6.14
d 1.d 272ms 0.5ms 3.0MB 260ms 0ms ldc2 1.32.2
d 1.d 304ms 0.4ms 5.0MB 290ms 0ms dmd 2.104.1