Programming Language and compiler
Benchmarks

Results for 38 of 40 languages from this run on actest1.

Unavailable in this run: Hack, Lisp. Follow the run link for failure details.

Fortran VS acton tip benchmarks

Current benchmark data was generated on Sun Sep 27 2026, full log can be found HERE

CONTRIBUTIONS are WELCOME!

[x86_64][4 cores] Intel(R) Core(TM) i7-3687U CPU @ 2.10GHz (Model 58)

* -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.)

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
fortran 4.f90 177ms 14ms 1.5MB 167ms 0ms gfortran 13.3.0
acton-tip 1.act 1163ms 17ms 13.2MB 1090ms 167ms acton 0.30.0.20260927.9.45

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
fortran 4.f90 23ms 3.7ms 2.7MB 13ms 0ms gfortran 13.3.0
acton-tip 1.act 141ms 7.0ms 21.2MB 120ms 17ms acton 0.30.0.20260927.9.45

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
fortran 1.f90 1.7ms 0.3ms 1.6MB 0ms 0ms gfortran 13.3.0
acton-tip 1.act 3.9ms 0.4ms 5.9MB 0ms 0ms acton 0.30.0.20260927.9.45

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
fortran 2.f90 610ms 47ms 1.5MB 600ms 0ms gfortran 13.3.0
acton-tip 1.act 1280ms 12ms 4.0MB 1340ms 107ms acton 0.30.0.20260927.9.45

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
fortran 2.f90 65ms 1.1ms 1.6MB 57ms 0ms gfortran 13.3.0
acton-tip 1.act 134ms 1.8ms 4.0MB 130ms 10ms acton 0.30.0.20260927.9.45

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
fortran 3-m.f90 6051ms 7.3ms 1.5MB 23903ms 3ms gfortran 13.3.0
fortran 2.f90 11153ms 19ms 2.5MB 11143ms 0ms gfortran 13.3.0
acton-tip 1.act 11288ms 25ms 5.8MB 11283ms 3ms acton 0.30.0.20260927.9.45

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
fortran 3-m.f90 1522ms 3.5ms 1.5MB 5970ms 3ms gfortran 13.3.0
fortran 2.f90 2795ms 3.4ms 1.6MB 2783ms 0ms gfortran 13.3.0
acton-tip 1.act 2892ms 8.2ms 4.8MB 2887ms 0ms acton 0.30.0.20260927.9.45

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
fortran 3-m.f90 391ms 2.4ms 1.6MB 1477ms 0ms gfortran 13.3.0
fortran 2.f90 703ms 3.3ms 1.5MB 687ms 0ms gfortran 13.3.0
acton-tip 1.act 737ms 7.4ms 12.2MB 730ms 0ms acton 0.30.0.20260927.9.45