Programming Language and compiler
Benchmarks

Rust VS Chapel benchmarks

Current benchmark data was generated on Mon Jun 23 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

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 1.2ms 0.1ms 1.8MB 0ms 0ms rustc 1.87.0
rust 1.rs 1.2ms 0.0ms 1.8MB 0ms 0ms rustc 1.89.0-nightly
chapel 1.chpl 11ms 0.4ms 28.8MB 0ms 0ms chpl 1.31.0

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 256ms 17ms 4.8MB 250ms 0ms rustc 1.89.0-nightly
rust 8.rs 293ms 1.7ms 4.9MB 283ms 0ms rustc 1.87.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 12ms 0.5ms 2.0MB 0ms 0ms rustc 1.89.0-nightly
rust 8.rs 14ms 0.1ms 2.0MB 10ms 0ms rustc 1.87.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4-i.rs 164ms 0.9ms 1.9MB 160ms 0ms rustc 1.87.0
rust 7-i.rs 219ms 0.9ms 1.8MB 210ms 0ms rustc 1.87.0
rust 1.rs 230ms 0.5ms 1.9MB 220ms 0ms rustc 1.87.0
rust 3.rs 279ms 0.3ms 1.9MB 270ms 0ms rustc 1.89.0-nightly
rust 2.rs 279ms 0.6ms 1.8MB 270ms 0ms rustc 1.87.0
chapel 2.chpl 325ms 1.9ms 26.6MB 320ms 0ms chpl 1.31.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4-i.rs 19ms 0.1ms 1.8MB 10ms 0ms rustc 1.87.0
rust 7-i.rs 24ms 0.2ms 1.8MB 20ms 0ms rustc 1.87.0
rust 1.rs 25ms 0.2ms 1.8MB 20ms 0ms rustc 1.87.0
rust 3.rs 30ms 0.1ms 1.8MB 20ms 0ms rustc 1.89.0-nightly
rust 2.rs 30ms 0.4ms 1.8MB 20ms 0ms rustc 1.87.0
chapel 2.chpl 46ms 1.1ms 28.8MB 40ms 0ms chpl 1.31.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7-m.rs 492ms 0.0ms 2.1MB 1907ms 7ms rustc 1.87.0
rust 8-m.rs 497ms 4.4ms 2.4MB 1893ms 3ms rustc 1.89.0-nightly
rust 8.rs 991ms 0.5ms 2.3MB 980ms 0ms rustc 1.89.0-nightly
chapel 1-m.chpl 1915ms 3.4ms 28.9MB 3803ms 0ms chpl 1.31.0
rust 7.rs 1957ms 10ms 1.9MB 1947ms 0ms rustc 1.87.0
rust 2-m.rs 2070ms 0.9ms 2.3MB 8153ms 7ms rustc 1.87.0
chapel 1.chpl 3721ms 7.6ms 28.8MB 3713ms 0ms chpl 1.31.0
rust 2.rs 4266ms 8.9ms 2.1MB 4257ms 0ms rustc 1.87.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7-m.rs 128ms 0.4ms 2.1MB 470ms 0ms rustc 1.87.0
rust 8-m.rs 128ms 0.2ms 2.3MB 470ms 0ms rustc 1.89.0-nightly
rust 8.rs 250ms 0.1ms 2.1MB 240ms 0ms rustc 1.89.0-nightly
chapel 1-m.chpl 491ms 1.8ms 28.9MB 957ms 0ms chpl 1.31.0
rust 7.rs 495ms 6.2ms 1.8MB 487ms 0ms rustc 1.87.0
rust 2-m.rs 521ms 0.3ms 2.1MB 2020ms 3ms rustc 1.87.0
chapel 1.chpl 956ms 29ms 28.8MB 953ms 0ms chpl 1.31.0
rust 2.rs 1067ms 0.1ms 2.0MB 1060ms 0ms rustc 1.87.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 36ms 0.5ms 2.3MB 110ms 0ms rustc 1.89.0-nightly
rust 7-m.rs 36ms 0.5ms 2.0MB 113ms 0ms rustc 1.87.0
rust 8.rs 65ms 0.5ms 2.0MB 60ms 0ms rustc 1.89.0-nightly
rust 7.rs 125ms 1.2ms 1.9MB 120ms 0ms rustc 1.87.0
rust 2-m.rs 134ms 0.3ms 2.0MB 490ms 0ms rustc 1.87.0
chapel 1-m.chpl 135ms 1.0ms 28.9MB 243ms 0ms chpl 1.31.0
chapel 1.chpl 248ms 1.5ms 28.8MB 240ms 0ms chpl 1.31.0
rust 2.rs 269ms 0.2ms 1.9MB 260ms 0ms rustc 1.87.0

binarytrees

Input: 18

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4.rs 1281ms 3.7ms 33.6MB 1260ms 10ms rustc 1.87.0
rust 5.rs 1360ms 12ms 33.8MB 1337ms 7ms rustc 1.87.0
rust 3.rs 1485ms 57ms 49.8MB 1453ms 17ms rustc 1.87.0
chapel 4.chpl 1973ms 34ms 62.3MB 1967ms 0ms chpl 1.31.0
chapel 3.chpl 2236ms 21ms 62.4MB 2227ms 0ms chpl 1.31.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4.rs 124ms 2.4ms 5.8MB 113ms 0ms rustc 1.87.0
rust 5.rs 127ms 3.7ms 5.8MB 117ms 0ms rustc 1.87.0
rust 3.rs 138ms 7.0ms 7.8MB 127ms 0ms rustc 1.87.0
chapel 4.chpl 185ms 1.3ms 32.4MB 180ms 0ms chpl 1.31.0
chapel 3.chpl 188ms 3.2ms 32.4MB 183ms 0ms chpl 1.31.0

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-m.rs 529ms 9.1ms 9.1MB 2003ms 57ms rustc 1.87.0
rust 5-m.rs 548ms 114ms 5.5MB 2063ms 63ms rustc 1.87.0
rust 1-m.rs 918ms 4.0ms 7.4MB 3403ms 190ms rustc 1.87.0
rust 3.rs 1104ms 13ms 9.3MB 1063ms 27ms rustc 1.87.0
rust 4.rs 1879ms 5.7ms 6.9MB 1863ms 0ms rustc 1.87.0
chapel 1-m.chpl 2341ms 58ms 699.6MB 4543ms 103ms chpl 1.31.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5-m.rs 52ms 1.9ms 3.3MB 163ms 7ms rustc 1.87.0
rust 3-m.rs 59ms 3.2ms 4.4MB 187ms 10ms rustc 1.87.0
rust 3.rs 67ms 0.4ms 4.0MB 57ms 0ms rustc 1.87.0
rust 1-m.rs 71ms 0.4ms 3.5MB 223ms 20ms rustc 1.87.0
rust 4.rs 118ms 4.8ms 3.1MB 107ms 0ms rustc 1.87.0
chapel 1-m.chpl 211ms 12ms 658.0MB 330ms 60ms chpl 1.31.0

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
chapel 1.chpl 72ms 1.7ms 32.5MB 70ms 0ms chpl 1.31.0
rust 1.rs 121ms 2.3ms 3.6MB 113ms 0ms rustc 1.87.0
rust 2.rs 427ms 1.5ms 3.6MB 417ms 0ms rustc 1.87.0

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
chapel 1.chpl 33ms 1.6ms 30.5MB 30ms 0ms chpl 1.31.0
rust 1.rs 34ms 1.6ms 2.9MB 30ms 0ms rustc 1.87.0
rust 2.rs 76ms 0.1ms 3.0MB 70ms 0ms rustc 1.87.0

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-im.rs 412ms 1.0ms 2.1MB 1587ms 0ms rustc 1.87.0
rust 5-m.rs 558ms 5.3ms 2.1MB 2150ms 0ms rustc 1.87.0
rust 2-im.rs 666ms 4.7ms 2.0MB 2570ms 0ms rustc 1.87.0
rust 1-m.rs 959ms 43ms 2.1MB 3667ms 0ms rustc 1.87.0
rust 3-i.rs 1498ms 0.7ms 1.8MB 1490ms 0ms rustc 1.87.0
rust 2-i.rs 2345ms 0.3ms 1.8MB 2337ms 0ms rustc 1.87.0
rust 1.rs 2722ms 8.7ms 1.8MB 2713ms 0ms rustc 1.87.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-im.rs 38ms 0.4ms 2.0MB 123ms 0ms rustc 1.87.0
rust 5-m.rs 52ms 0.7ms 2.1MB 170ms 0ms rustc 1.87.0
rust 2-im.rs 61ms 2.1ms 2.1MB 207ms 0ms rustc 1.87.0
rust 1-m.rs 82ms 1.9ms 2.1MB 290ms 0ms rustc 1.87.0
rust 3-i.rs 125ms 0.7ms 1.9MB 120ms 0ms rustc 1.87.0
rust 2-i.rs 193ms 0.3ms 1.8MB 183ms 0ms rustc 1.87.0
rust 1.rs 225ms 2.5ms 1.8MB 217ms 0ms rustc 1.87.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5c-m.rs 89ms 0.4ms 3.4MB 260ms 0ms rustc 1.87.0
rust 6.rs 89ms 0.5ms 1.9MB 80ms 0ms rustc 1.87.0
rust 5-m.rs 94ms 0.8ms 3.2MB 293ms 0ms rustc 1.87.0
chapel 5-m.chpl 109ms 1.6ms 28.4MB 197ms 0ms chpl 1.31.0
rust 1c.rs 162ms 0.5ms 1.9MB 150ms 0ms rustc 1.87.0
rust 1.rs 196ms 1.0ms 1.9MB 190ms 0ms rustc 1.87.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 6.rs 12ms 1.2ms 1.9MB 10ms 0ms rustc 1.87.0
rust 5c-m.rs 16ms 0.5ms 3.2MB 27ms 0ms rustc 1.87.0
rust 5-m.rs 17ms 0.5ms 3.2MB 30ms 0ms rustc 1.87.0
rust 1c.rs 19ms 0.3ms 1.9MB 10ms 0ms rustc 1.87.0
rust 1.rs 22ms 0.4ms 2.0MB 10ms 0ms rustc 1.87.0
chapel 5.chpl 23ms 1.5ms 28.4MB 20ms 0ms chpl 1.31.0

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1-m.rs 265ms 55ms 79.6MB 150ms 480ms rustc 1.87.0
rust 2-http2.rs 318ms 19ms 55.1MB 703ms 357ms rustc 1.87.0
rust 2-m.rs 354ms 23ms 73.1MB 230ms 823ms rustc 1.87.0
rust 1-http2.rs 536ms 57ms 70.0MB 1193ms 697ms rustc 1.87.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1-m.rs 40ms 9.1ms 17.4MB 20ms 53ms rustc 1.87.0
rust 2-m.rs 79ms 2.2ms 22.6MB 33ms 163ms rustc 1.87.0
rust 2-http2.rs 193ms 32ms 25.0MB 483ms 170ms rustc 1.87.0
rust 1-http2.rs 268ms 9.1ms 24.9MB 757ms 200ms rustc 1.87.0

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5-i.rs 30ms 0.9ms 9.8MB 20ms 0ms rustc 1.87.0
rust 4-i.rs 32ms 2.3ms 7.9MB 20ms 0ms rustc 1.87.0
rust 2.rs 62ms 2.5ms 33.8MB 37ms 10ms rustc 1.87.0
rust 3.rs 64ms 2.6ms 32.0MB 43ms 10ms rustc 1.87.0
rust 1.rs 105ms 1.3ms 67.4MB 67ms 27ms rustc 1.87.0

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5-i.rs 211ms 3.7ms 53.3MB 187ms 13ms rustc 1.87.0
rust 4-i.rs 262ms 4.6ms 54.5MB 207ms 40ms rustc 1.87.0
rust 2.rs 392ms 0.9ms 237.8MB 287ms 93ms rustc 1.87.0
rust 3.rs 405ms 5.0ms 238.1MB 307ms 83ms rustc 1.87.0
rust 1.rs 693ms 3.9ms 551.8MB 440ms 237ms rustc 1.87.0

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 222ms 6.6ms 28.0MB 630ms 17ms rustc 1.87.0
rust 8.rs 416ms 2.8ms 23.8MB 390ms 10ms rustc 1.87.0
chapel 3-m.chpl 762ms 5.2ms 99.0MB 1443ms 10ms chpl 1.31.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 33ms 2.4ms 16.5MB 67ms 0ms rustc 1.87.0
rust 8.rs 55ms 0.9ms 11.4MB 40ms 3ms rustc 1.87.0
chapel 3-m.chpl 116ms 1.6ms 87.0MB 203ms 3ms chpl 1.31.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 35ms 5.1ms 1.9MB 27ms 0ms rustc 1.87.0
rust 1.rs 49ms 4.1ms 1.9MB 43ms 0ms rustc 1.87.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 143ms 28ms 1.8MB 133ms 0ms rustc 1.87.0
rust 1.rs 175ms 13ms 1.9MB 167ms 0ms rustc 1.87.0

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 24ms 2.0ms 1.8MB 17ms 0ms rustc 1.87.0
rust 1.rs 29ms 0.5ms 1.8MB 20ms 0ms rustc 1.87.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 708ms 3.5ms 33.8MB 683ms 10ms rustc 1.87.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 151ms 2.0ms 9.8MB 140ms 0ms rustc 1.87.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 317ms 11ms 40.9MB 300ms 0ms rustc 1.87.0
rust 2.rs 318ms 4.7ms 6.6MB 307ms 0ms rustc 1.87.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 60ms 1.5ms 11.6MB 50ms 0ms rustc 1.87.0
rust 2.rs 78ms 0.2ms 2.9MB 70ms 0ms rustc 1.87.0

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
chapel 2.chpl 447ms 1.6ms 30.4MB 440ms 0ms chpl 1.31.0
rust 1.rs 1525ms 8.2ms 2.7MB 1313ms 190ms rustc 1.87.0
rust 2.rs 1715ms 7.5ms 2.7MB 1627ms 73ms rustc 1.87.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
chapel 2.chpl 114ms 0.9ms 30.4MB 110ms 0ms chpl 1.31.0
rust 1.rs 326ms 2.2ms 2.4MB 303ms 7ms rustc 1.87.0
rust 2.rs 382ms 2.7ms 2.4MB 370ms 0ms rustc 1.87.0

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 442ms 4.0ms 78.6MB 450ms 17ms rustc 1.87.0
chapel 3.chpl 1401ms 0.9ms 220.3MB 1350ms 43ms chpl 1.31.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 51ms 1.5ms 11.6MB 43ms 0ms rustc 1.87.0
chapel 3.chpl 168ms 2.2ms 49.0MB 147ms 20ms chpl 1.31.0

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 116ms 0.3ms 1.8MB 110ms 0ms rustc 1.87.0
chapel 1.chpl 1180ms 4.7ms 29.1MB 1173ms 0ms chpl 1.31.0
rust 1.rs 1414ms 10ms 1.9MB 1403ms 0ms rustc 1.87.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 32ms 1.5ms 1.9MB 23ms 0ms rustc 1.87.0
chapel 1.chpl 305ms 1.3ms 29.0MB 300ms 0ms chpl 1.31.0
rust 1.rs 359ms 5.0ms 1.9MB 350ms 0ms rustc 1.87.0