Programming Language and compiler
Benchmarks

All C 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.)

helloworld

Input: QwQ

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.c 1.0ms 0.0ms 1.4MB 0ms 0ms zigcc 0.14.1
1.c 1.2ms 0.0ms 2.1MB 0ms 0ms gcc 15.1.0
1.c 1.2ms 0.0ms 2.1MB 0ms 0ms clang 14.0.0-1ubuntu1.1

knucleotide

Input: 2500000_in

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1-m.c 172ms 2.2ms 23.6MB 403ms 7ms gcc 15.1.0
1-m.c 292ms 0.1ms 25.7MB 1000ms 27ms clang 14.0.0-1ubuntu1.1

Input: 250000_in

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1-m.c 26ms 1.5ms 13.0MB 57ms 3ms gcc 15.1.0
1-m.c 36ms 1.0ms 15.0MB 103ms 0ms clang 14.0.0-1ubuntu1.1

mandelbrot

Input: 5000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1-mffi.c 224ms 14ms 7.5MB 840ms 13ms clang 14.0.0-1ubuntu1.1
1-mffi.c 269ms 8.5ms 6.5MB 817ms 0ms gcc 15.1.0
1-mffi.c 330ms 1.5ms 6.0MB 320ms 0ms zigcc 0.14.1
1-ffi.c 332ms 2.8ms 6.0MB 323ms 0ms zigcc 0.14.1
1-ffi.c 452ms 0.9ms 6.5MB 440ms 0ms clang 14.0.0-1ubuntu1.1
1-ffi.c 543ms 2.3ms 6.6MB 533ms 0ms gcc 15.1.0

Input: 1000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1-mffi.c 15ms 0.5ms 4.6MB 30ms 0ms clang 14.0.0-1ubuntu1.1
1-ffi.c 16ms 0.1ms 3.0MB 10ms 0ms zigcc 0.14.1
1-mffi.c 16ms 0.2ms 3.0MB 10ms 0ms zigcc 0.14.1
1-mffi.c 17ms 2.0ms 3.8MB 43ms 0ms gcc 15.1.0
1-ffi.c 21ms 0.1ms 3.5MB 10ms 0ms clang 14.0.0-1ubuntu1.1
1-ffi.c 25ms 0.4ms 3.8MB 20ms 0ms gcc 15.1.0

nbody

Input: 5000000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
8-i.c 270ms 3.2ms 1.5MB 263ms 0ms zigcc 0.14.1
8-i.c 303ms 3.1ms 2.1MB 293ms 0ms clang 14.0.0-1ubuntu1.1
2.c 309ms 1.0ms 2.3MB 300ms 0ms gcc 15.1.0
2.c 313ms 2.0ms 1.5MB 303ms 0ms zigcc 0.14.1
5.c 313ms 1.2ms 2.3MB 307ms 0ms gcc 15.1.0
5.c 315ms 1.6ms 1.5MB 307ms 0ms zigcc 0.14.1
5.c 315ms 1.6ms 2.1MB 310ms 0ms clang 14.0.0-1ubuntu1.1
2.c 322ms 4.3ms 2.1MB 317ms 0ms clang 14.0.0-1ubuntu1.1
8-i.c 337ms 1.0ms 2.3MB 330ms 0ms gcc 15.1.0

Input: 500000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
8-i.c 29ms 0.6ms 1.5MB 20ms 0ms zigcc 0.14.1
8-i.c 33ms 0.2ms 2.1MB 20ms 0ms clang 14.0.0-1ubuntu1.1
2.c 33ms 0.3ms 1.5MB 30ms 0ms zigcc 0.14.1
5.c 33ms 0.3ms 2.3MB 30ms 0ms gcc 15.1.0
5.c 34ms 0.4ms 1.5MB 27ms 0ms zigcc 0.14.1
2.c 34ms 0.9ms 2.3MB 27ms 0ms gcc 15.1.0
5.c 34ms 1.0ms 2.1MB 30ms 0ms clang 14.0.0-1ubuntu1.1
2.c 34ms 0.7ms 2.1MB 30ms 0ms clang 14.0.0-1ubuntu1.1
8-i.c 35ms 0.1ms 2.3MB 30ms 0ms gcc 15.1.0

nsieve

Input: 12

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.c 261ms 9.0ms 40.9MB 243ms 0ms gcc 15.1.0
1.c 271ms 2.2ms 41.0MB 257ms 0ms clang 14.0.0-1ubuntu1.1
1.c 285ms 5.2ms 40.3MB 270ms 0ms zigcc 0.14.1

Input: 10

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.c 53ms 3.0ms 11.7MB 40ms 0ms clang 14.0.0-1ubuntu1.1
1.c 55ms 2.4ms 11.6MB 43ms 0ms gcc 15.1.0
1.c 58ms 2.2ms 11.0MB 47ms 0ms zigcc 0.14.1

spectral-norm

Input: 8000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
3-m.c 736ms 1.2ms 2.0MB 2897ms 0ms gcc 15.1.0
6-im.c 951ms 0.7ms 2.0MB 3743ms 0ms gcc 15.1.0
4-m.c 999ms 19ms 2.0MB 3907ms 0ms gcc 15.1.0
6-im.c 1002ms 3.9ms 3.3MB 3943ms 0ms clang 14.0.0-1ubuntu1.1
4-m.c 1132ms 22ms 3.4MB 4423ms 7ms clang 14.0.0-1ubuntu1.1
5-im.c 1142ms 1.9ms 2.0MB 4507ms 0ms gcc 15.1.0
5-im.c 1330ms 4.1ms 3.3MB 5240ms 0ms clang 14.0.0-1ubuntu1.1
3-m.c 1830ms 5.6ms 3.3MB 7220ms 10ms clang 14.0.0-1ubuntu1.1

Input: 4000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
3-m.c 193ms 1.4ms 2.0MB 737ms 0ms gcc 15.1.0
6-im.c 247ms 2.2ms 2.0MB 943ms 0ms gcc 15.1.0
4-m.c 258ms 0.8ms 2.0MB 990ms 0ms gcc 15.1.0
6-im.c 259ms 2.3ms 3.3MB 983ms 0ms clang 14.0.0-1ubuntu1.1
4-m.c 290ms 4.2ms 3.1MB 1107ms 0ms clang 14.0.0-1ubuntu1.1
5-im.c 303ms 19ms 2.0MB 1153ms 0ms gcc 15.1.0
5-im.c 341ms 2.7ms 3.4MB 1310ms 0ms clang 14.0.0-1ubuntu1.1
3-m.c 476ms 17ms 3.3MB 1823ms 0ms clang 14.0.0-1ubuntu1.1

Input: 2000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
3-m.c 55ms 1.1ms 2.0MB 193ms 0ms gcc 15.1.0
6-im.c 70ms 0.8ms 3.3MB 250ms 0ms clang 14.0.0-1ubuntu1.1
4-m.c 72ms 0.8ms 2.1MB 260ms 0ms gcc 15.1.0
6-im.c 72ms 6.7ms 2.0MB 257ms 0ms gcc 15.1.0
4-m.c 78ms 0.4ms 3.1MB 280ms 0ms clang 14.0.0-1ubuntu1.1
5-im.c 81ms 0.6ms 2.0MB 297ms 0ms gcc 15.1.0
5-im.c 92ms 0.5ms 3.3MB 330ms 0ms clang 14.0.0-1ubuntu1.1
3-m.c 123ms 2.1ms 3.4MB 453ms 0ms clang 14.0.0-1ubuntu1.1