Programming Language and compiler
Benchmarks

Swift VS Chapel 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.)

binarytrees

Input: 18

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
chapel 4.chpl 1943ms 3.5ms 62.3MB 1937ms 0ms chpl 1.31.0
chapel 3.chpl 2057ms 34ms 62.4MB 2050ms 0ms chpl 1.31.0
swift 1.swift 2661ms 31ms 53.6MB 2630ms 17ms swift 6.1.2

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
chapel 4.chpl 185ms 1.5ms 32.4MB 180ms 0ms chpl 1.31.0
chapel 3.chpl 188ms 2.4ms 32.3MB 187ms 0ms chpl 1.31.0
swift 1.swift 242ms 3.3ms 11.9MB 230ms 0ms swift 6.1.2

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 1.swift 2469ms 4.7ms 5.4MB 2460ms 0ms swift 6.1.2

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 1.swift 213ms 0.4ms 6.1MB 200ms 0ms swift 6.1.2

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
chapel 5-m.chpl 106ms 1.0ms 28.4MB 190ms 0ms chpl 1.31.0
swift 3-m.swift 138ms 0.6ms 20.7MB 400ms 3ms swift 6.1.2

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
chapel 5.chpl 20ms 1.0ms 28.4MB 20ms 0ms chpl 1.31.0
swift 3.swift 37ms 0.3ms 14.2MB 30ms 0ms swift 6.1.2

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 1.swift 2.2ms 0.2ms 5.6MB 0ms 0ms swift 6.1.2
chapel 1.chpl 10ms 0.5ms 28.8MB 0ms 0ms chpl 1.31.0

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
chapel 3-m.chpl 746ms 4.8ms 99.0MB 1410ms 7ms chpl 1.31.0
swift 2-m.swift 1313ms 5.4ms 70.6MB 4803ms 27ms swift 6.1.2

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
chapel 3-m.chpl 114ms 2.1ms 87.0MB 200ms 3ms chpl 1.31.0
swift 2-m.swift 250ms 2.2ms 60.0MB 663ms 30ms swift 6.1.2

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
chapel 2.chpl 324ms 1.7ms 28.8MB 320ms 0ms chpl 1.31.0
swift 7.swift 343ms 0.8ms 9.9MB 330ms 0ms swift 6.1.2

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 7.swift 39ms 0.1ms 9.8MB 30ms 0ms swift 6.1.2
chapel 2.chpl 43ms 1.3ms 28.8MB 40ms 0ms chpl 1.31.0

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
chapel 2.chpl 444ms 0.8ms 28.3MB 440ms 0ms chpl 1.31.0
swift 1.swift timeout 0.0ms 7.3MB 4930ms 57ms swift 6.1.2

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
chapel 2.chpl 114ms 0.4ms 30.4MB 110ms 0ms chpl 1.31.0
swift 1.swift 1856ms 13ms 7.0MB 1847ms 0ms swift 6.1.2