Programming Language and compiler
Benchmarks

All C benchmarks

Current benchmark data was generated on Mon May 19 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 0.9ms 0.0ms 1.4MB 0ms 0ms zigcc 0.14.0
1.c 1.2ms 0.1ms 2.1MB 0ms 0ms gcc 15.1.0
1.c 1.3ms 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 171ms 2.2ms 23.3MB 400ms 10ms gcc 15.1.0
1-m.c 304ms 9.4ms 25.6MB 1047ms 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 28ms 0.6ms 12.9MB 60ms 0ms gcc 15.1.0
1-m.c 38ms 1.4ms 14.9MB 110ms 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 211ms 5.6ms 7.5MB 787ms 13ms clang 14.0.0-1ubuntu1.1
1-mffi.c 270ms 9.6ms 6.6MB 820ms 0ms gcc 15.1.0
1-mffi.c 329ms 0.2ms 6.0MB 320ms 0ms zigcc 0.14.0
1-ffi.c 331ms 2.0ms 6.0MB 320ms 0ms zigcc 0.14.0
1-ffi.c 460ms 4.3ms 6.7MB 447ms 0ms clang 14.0.0-1ubuntu1.1
1-ffi.c 542ms 0.1ms 6.8MB 530ms 0ms gcc 15.1.0

Input: 1000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1-mffi.c 15ms 0.3ms 4.6MB 30ms 0ms clang 14.0.0-1ubuntu1.1
1-ffi.c 16ms 0.4ms 3.0MB 10ms 0ms zigcc 0.14.0
1-mffi.c 16ms 0.2ms 3.0MB 10ms 0ms zigcc 0.14.0
1-mffi.c 18ms 2.4ms 3.8MB 47ms 0ms gcc 15.1.0
1-ffi.c 22ms 0.4ms 3.8MB 13ms 0ms clang 14.0.0-1ubuntu1.1
1-ffi.c 26ms 1.0ms 3.6MB 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 266ms 0.1ms 1.5MB 260ms 0ms zigcc 0.14.0
8-i.c 301ms 2.3ms 2.1MB 290ms 0ms clang 14.0.0-1ubuntu1.1
2.c 308ms 0.2ms 2.3MB 300ms 0ms gcc 15.1.0
5.c 313ms 0.9ms 2.3MB 300ms 0ms gcc 15.1.0
2.c 315ms 2.1ms 1.5MB 307ms 0ms zigcc 0.14.0
5.c 316ms 0.9ms 1.5MB 310ms 0ms zigcc 0.14.0
5.c 317ms 1.4ms 2.1MB 310ms 0ms clang 14.0.0-1ubuntu1.1
2.c 320ms 3.6ms 2.1MB 310ms 0ms clang 14.0.0-1ubuntu1.1
8-i.c 337ms 0.3ms 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 0.14.0
8-i.c 33ms 0.7ms 2.1MB 23ms 0ms clang 14.0.0-1ubuntu1.1
2.c 33ms 0.4ms 2.3MB 30ms 0ms gcc 15.1.0
5.c 33ms 0.1ms 2.3MB 27ms 0ms gcc 15.1.0
5.c 34ms 0.4ms 2.1MB 27ms 0ms clang 14.0.0-1ubuntu1.1
2.c 34ms 1.0ms 1.5MB 30ms 0ms zigcc 0.14.0
5.c 34ms 0.7ms 1.5MB 30ms 0ms zigcc 0.14.0
8-i.c 36ms 0.4ms 2.3MB 30ms 0ms gcc 15.1.0
2.c 38ms 2.0ms 2.1MB 30ms 0ms clang 14.0.0-1ubuntu1.1

nsieve

Input: 12

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.c 282ms 11ms 40.9MB 263ms 0ms gcc 15.1.0
1.c 303ms 3.8ms 40.8MB 287ms 0ms clang 14.0.0-1ubuntu1.1
1.c 307ms 13ms 40.3MB 290ms 0ms zigcc 0.14.0

Input: 10

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.c 52ms 2.8ms 11.8MB 40ms 0ms gcc 15.1.0
1.c 53ms 2.1ms 11.7MB 40ms 0ms clang 14.0.0-1ubuntu1.1
1.c 58ms 3.4ms 11.0MB 47ms 0ms zigcc 0.14.0

spectral-norm

Input: 8000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
3-m.c 736ms 1.0ms 2.3MB 2893ms 0ms gcc 15.1.0
6-im.c 952ms 1.7ms 2.0MB 3753ms 0ms gcc 15.1.0
4-m.c 989ms 1.3ms 2.1MB 3890ms 0ms gcc 15.1.0
6-im.c 1001ms 0.7ms 3.1MB 3933ms 0ms clang 14.0.0-1ubuntu1.1
4-m.c 1118ms 0.5ms 3.3MB 4400ms 0ms clang 14.0.0-1ubuntu1.1
5-im.c 1174ms 26ms 2.3MB 4553ms 0ms gcc 15.1.0
5-im.c 1341ms 14ms 3.3MB 5260ms 3ms clang 14.0.0-1ubuntu1.1
3-m.c 1846ms 16ms 3.3MB 7243ms 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 195ms 2.3ms 2.0MB 737ms 0ms gcc 15.1.0
6-im.c 246ms 1.4ms 2.0MB 947ms 0ms gcc 15.1.0
6-im.c 258ms 0.3ms 3.4MB 987ms 0ms clang 14.0.0-1ubuntu1.1
4-m.c 259ms 0.8ms 2.1MB 993ms 0ms gcc 15.1.0
4-m.c 289ms 1.6ms 3.3MB 1107ms 0ms clang 14.0.0-1ubuntu1.1
5-im.c 298ms 7.8ms 2.0MB 1143ms 0ms gcc 15.1.0
5-im.c 340ms 1.4ms 3.3MB 1310ms 0ms clang 14.0.0-1ubuntu1.1
3-m.c 466ms 4.2ms 3.4MB 1800ms 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 57ms 1.9ms 2.3MB 193ms 0ms gcc 15.1.0
6-im.c 72ms 3.1ms 3.4MB 250ms 0ms clang 14.0.0-1ubuntu1.1
4-m.c 73ms 0.8ms 2.0MB 260ms 0ms gcc 15.1.0
6-im.c 73ms 7.6ms 2.0MB 260ms 0ms gcc 15.1.0
4-m.c 78ms 1.0ms 3.1MB 277ms 0ms clang 14.0.0-1ubuntu1.1
5-im.c 81ms 0.3ms 2.0MB 290ms 0ms gcc 15.1.0
5-im.c 92ms 0.5ms 3.1MB 330ms 0ms clang 14.0.0-1ubuntu1.1
3-m.c 124ms 1.7ms 3.3MB 457ms 0ms clang 14.0.0-1ubuntu1.1