Programming Language and compiler
Benchmarks

All C benchmarks

Current benchmark data was generated on Fri Aug 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 0.1ms 1.3MB 0ms 0ms zigcc 0.14.1
1.c 1.2ms 0.1ms 2.1MB 0ms 0ms gcc 15.1.0
1.c 1.6ms 0.7ms 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 4.2ms 24.1MB 400ms 10ms gcc 15.1.0
1-m.c 293ms 1.6ms 25.7MB 1000ms 23ms 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 27ms 1.3ms 13.6MB 60ms 0ms gcc 15.1.0
1-m.c 37ms 0.3ms 15.0MB 93ms 3ms 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 219ms 4.3ms 7.6MB 810ms 10ms clang 14.0.0-1ubuntu1.1
1-mffi.c 264ms 0.9ms 6.6MB 810ms 0ms gcc 15.1.0
1-ffi.c 330ms 2.0ms 6.0MB 320ms 0ms zigcc 0.14.1
1-mffi.c 331ms 0.8ms 6.0MB 320ms 0ms zigcc 0.14.1
1-ffi.c 453ms 1.0ms 6.5MB 443ms 0ms clang 14.0.0-1ubuntu1.1
1-ffi.c 545ms 3.1ms 6.8MB 537ms 0ms gcc 15.1.0

Input: 1000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1-mffi.c 15ms 1.2ms 4.8MB 30ms 0ms clang 14.0.0-1ubuntu1.1
1-ffi.c 16ms 0.3ms 3.0MB 10ms 0ms zigcc 0.14.1
1-mffi.c 16ms 0.4ms 3.0MB 10ms 0ms zigcc 0.14.1
1-mffi.c 16ms 1.2ms 3.8MB 40ms 0ms gcc 15.1.0
1-ffi.c 21ms 0.2ms 3.6MB 10ms 0ms clang 14.0.0-1ubuntu1.1
1-ffi.c 26ms 1.1ms 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 268ms 0.7ms 1.5MB 260ms 0ms zigcc 0.14.1
8-i.c 303ms 1.7ms 2.1MB 290ms 0ms clang 14.0.0-1ubuntu1.1
2.c 310ms 1.5ms 2.3MB 300ms 0ms gcc 15.1.0
2.c 312ms 1.1ms 1.5MB 300ms 0ms zigcc 0.14.1
5.c 314ms 2.4ms 2.3MB 303ms 0ms gcc 15.1.0
5.c 315ms 1.3ms 2.1MB 307ms 0ms clang 14.0.0-1ubuntu1.1
5.c 316ms 1.0ms 1.5MB 310ms 0ms zigcc 0.14.1
2.c 317ms 0.2ms 2.1MB 310ms 0ms clang 14.0.0-1ubuntu1.1
8-i.c 336ms 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 0.5ms 1.5MB 20ms 0ms zigcc 0.14.1
8-i.c 32ms 0.4ms 2.1MB 23ms 0ms clang 14.0.0-1ubuntu1.1
5.c 34ms 0.4ms 2.3MB 30ms 0ms gcc 15.1.0
2.c 34ms 0.1ms 1.5MB 30ms 0ms zigcc 0.14.1
5.c 34ms 0.4ms 2.1MB 27ms 0ms clang 14.0.0-1ubuntu1.1
2.c 34ms 0.3ms 2.3MB 30ms 0ms gcc 15.1.0
2.c 34ms 0.4ms 2.1MB 30ms 0ms clang 14.0.0-1ubuntu1.1
5.c 34ms 0.6ms 1.5MB 30ms 0ms zigcc 0.14.1
8-i.c 36ms 0.2ms 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 266ms 3.7ms 40.9MB 250ms 0ms gcc 15.1.0
1.c 268ms 5.1ms 41.0MB 253ms 0ms clang 14.0.0-1ubuntu1.1
1.c 283ms 6.3ms 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 54ms 5.0ms 11.6MB 43ms 0ms gcc 15.1.0
1.c 55ms 3.1ms 11.7MB 43ms 0ms clang 14.0.0-1ubuntu1.1
1.c 59ms 2.4ms 11.0MB 50ms 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 744ms 14ms 2.0MB 2913ms 0ms gcc 15.1.0
6-im.c 951ms 1.1ms 2.0MB 3750ms 0ms gcc 15.1.0
4-m.c 990ms 3.6ms 2.1MB 3893ms 0ms gcc 15.1.0
6-im.c 1002ms 3.4ms 3.4MB 3940ms 0ms clang 14.0.0-1ubuntu1.1
4-m.c 1118ms 0.6ms 3.1MB 4400ms 3ms clang 14.0.0-1ubuntu1.1
5-im.c 1149ms 13ms 2.0MB 4520ms 0ms gcc 15.1.0
5-im.c 1338ms 17ms 3.3MB 5263ms 3ms clang 14.0.0-1ubuntu1.1
3-m.c 1841ms 23ms 3.3MB 7240ms 7ms 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 0.4ms 2.0MB 737ms 0ms gcc 15.1.0
6-im.c 245ms 0.2ms 2.0MB 937ms 0ms gcc 15.1.0
6-im.c 258ms 0.6ms 3.1MB 987ms 0ms clang 14.0.0-1ubuntu1.1
4-m.c 261ms 3.1ms 2.0MB 1000ms 0ms gcc 15.1.0
4-m.c 287ms 0.9ms 3.3MB 1103ms 0ms clang 14.0.0-1ubuntu1.1
5-im.c 293ms 0.6ms 2.0MB 1130ms 0ms gcc 15.1.0
5-im.c 340ms 0.6ms 3.3MB 1310ms 0ms clang 14.0.0-1ubuntu1.1
3-m.c 463ms 0.0ms 3.3MB 1807ms 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 58ms 5.3ms 2.0MB 203ms 0ms gcc 15.1.0
6-im.c 68ms 0.4ms 2.0MB 243ms 0ms gcc 15.1.0
6-im.c 70ms 0.3ms 3.3MB 247ms 0ms clang 14.0.0-1ubuntu1.1
4-m.c 72ms 0.6ms 2.1MB 260ms 0ms gcc 15.1.0
4-m.c 77ms 0.2ms 3.0MB 280ms 0ms clang 14.0.0-1ubuntu1.1
5-im.c 80ms 0.2ms 2.0MB 290ms 0ms gcc 15.1.0
5-im.c 92ms 0.5ms 3.3MB 330ms 0ms clang 14.0.0-1ubuntu1.1
3-m.c 122ms 0.9ms 3.3MB 450ms 0ms clang 14.0.0-1ubuntu1.1