Programming Language and compiler
Benchmarks

Chapel VS C# benchmarks

Current benchmark data was generated on Sun Jul 13 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
csharp 1.cs 931ms 8.3ms 181.9MB 933ms 137ms dotnet 9.0.302
csharp 1.cs 942ms 11ms 168.9MB 943ms 137ms dotnet/aot 9.0.302
csharp 1.cs 1685ms 22ms 103.4MB 1870ms 203ms mono 6.12.0
chapel 4.chpl 1953ms 3.7ms 62.3MB 1943ms 0ms chpl 1.31.0
chapel 3.chpl 2034ms 7.2ms 62.3MB 2027ms 0ms chpl 1.31.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 118ms 10ms 31.4MB 80ms 27ms dotnet/aot 9.0.302
csharp 1.cs 141ms 3.1ms 44.2MB 120ms 13ms mono 6.12.0
chapel 4.chpl 183ms 1.2ms 32.4MB 180ms 0ms chpl 1.31.0
chapel 3.chpl 184ms 0.6ms 32.3MB 180ms 0ms chpl 1.31.0
csharp 1.cs 191ms 3.1ms 51.1MB 157ms 30ms dotnet 9.0.302

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1-m.cs 2157ms 73ms 50.4MB 7597ms 73ms dotnet/aot 9.0.302
chapel 1-m.chpl 2252ms 44ms 799.1MB 4370ms 97ms chpl 1.31.0
csharp 1-m.cs 2634ms 184ms 72.5MB 8383ms 107ms dotnet 9.0.302

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1-m.cs 149ms 16ms 21.0MB 437ms 10ms dotnet/aot 9.0.302
chapel 1-m.chpl 220ms 8.1ms 759.6MB 343ms 67ms chpl 1.31.0
csharp 1-m.cs 311ms 37ms 37.6MB 743ms 20ms dotnet 9.0.302

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
chapel 1.chpl 71ms 3.0ms 32.5MB 70ms 0ms chpl 1.31.0
csharp 1.cs 4089ms 6.5ms 18.6MB 4063ms 10ms dotnet/aot 9.0.302
csharp 1.cs 4970ms 3.7ms 37.8MB 4943ms 20ms dotnet 9.0.302

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
csharp 1.cs 679ms 3.5ms 14.6MB 660ms 3ms dotnet/aot 9.0.302
csharp 1.cs 865ms 3.0ms 33.8MB 843ms 10ms dotnet 9.0.302

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
chapel 5-m.chpl 106ms 1.6ms 28.4MB 190ms 0ms chpl 1.31.0
csharp 5-m.cs 127ms 6.3ms 25.3MB 360ms 83ms dotnet/aot 9.0.302
csharp 5-m.cs 191ms 3.3ms 37.6MB 470ms 120ms dotnet 9.0.302
csharp 5-m.cs 241ms 16ms 47.5MB 667ms 120ms mono 6.12.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
chapel 5.chpl 21ms 1.9ms 28.4MB 20ms 0ms chpl 1.31.0
csharp 5-m.cs 26ms 1.6ms 16.6MB 37ms 17ms dotnet/aot 9.0.302
csharp 5-m.cs 62ms 1.9ms 37.9MB 90ms 13ms dotnet 9.0.302
csharp 5-m.cs 71ms 2.1ms 30.6MB 103ms 20ms mono 6.12.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 6.3ms 0.2ms 9.4MB 0ms 0ms dotnet/aot 9.0.302
chapel 1.chpl 11ms 0.6ms 28.8MB 0ms 0ms chpl 1.31.0
csharp 1.cs 33ms 1.2ms 21.3MB 20ms 0ms mono 6.12.0
csharp 1.cs 35ms 1.0ms 26.0MB 20ms 8ms dotnet 9.0.302

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 6-m.cs 459ms 14ms 46.3MB 1217ms 20ms dotnet/aot 9.0.302
csharp 6-m.cs 748ms 18ms 68.5MB 2110ms 23ms dotnet 9.0.302
chapel 3-m.chpl 758ms 2.5ms 86.9MB 1433ms 10ms chpl 1.31.0
csharp 6-m.cs 1011ms 2.7ms 66.6MB 2913ms 20ms mono 6.12.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 6-m.cs 91ms 6.2ms 34.7MB 153ms 13ms dotnet/aot 9.0.302
chapel 3-m.chpl 117ms 1.8ms 87.0MB 203ms 3ms chpl 1.31.0
csharp 6-m.cs 178ms 6.7ms 57.0MB 263ms 30ms dotnet 9.0.302
csharp 6-m.cs 199ms 4.8ms 55.2MB 377ms 20ms mono 6.12.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
chapel 2.chpl 322ms 1.9ms 28.9MB 317ms 0ms chpl 1.31.0
csharp 9.cs 368ms 4.8ms 27.9MB 340ms 7ms dotnet 9.0.302
csharp 8.cs 372ms 3.5ms 9.9MB 357ms 0ms dotnet/aot 9.0.302
csharp 8.cs 419ms 3.4ms 27.9MB 403ms 7ms dotnet 9.0.302
csharp 8.cs 1250ms 3.2ms 22.1MB 1233ms 0ms mono 6.12.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
chapel 2.chpl 43ms 0.4ms 28.8MB 40ms 0ms chpl 1.31.0
csharp 8.cs 46ms 1.1ms 9.9MB 40ms 0ms dotnet/aot 9.0.302
csharp 9.cs 91ms 0.6ms 28.3MB 73ms 7ms dotnet 9.0.302
csharp 8.cs 97ms 3.8ms 27.6MB 80ms 7ms dotnet 9.0.302
csharp 8.cs 165ms 0.7ms 22.6MB 150ms 0ms mono 6.12.0

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
chapel 2.chpl 446ms 0.8ms 28.3MB 440ms 0ms chpl 1.31.0
csharp 1.cs 3220ms 22ms 14.0MB 3130ms 93ms dotnet/aot 9.0.302
csharp 1.cs 3571ms 43ms 38.0MB 3593ms 117ms dotnet 9.0.302

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
chapel 2.chpl 115ms 1.5ms 30.4MB 110ms 0ms chpl 1.31.0
csharp 1.cs 753ms 1.0ms 13.3MB 720ms 27ms dotnet/aot 9.0.302
csharp 1.cs 993ms 5.8ms 37.9MB 1077ms 40ms dotnet 9.0.302

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
chapel 3.chpl 1387ms 2.0ms 246.2MB 1340ms 40ms chpl 1.31.0
csharp 6.cs 1754ms 1.1ms 419.2MB 1653ms 147ms dotnet/aot 9.0.302
csharp 5.cs 2081ms 35ms 442.1MB 2133ms 170ms dotnet 9.0.302
csharp 6.cs 2706ms 23ms 441.1MB 2663ms 163ms dotnet 9.0.302
csharp 5.cs 4207ms 9.5ms 419.7MB 4107ms 153ms dotnet/aot 9.0.302

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
chapel 3.chpl 162ms 2.3ms 48.9MB 143ms 10ms chpl 1.31.0
csharp 6.cs 190ms 0.1ms 46.3MB 163ms 17ms dotnet/aot 9.0.302
csharp 5.cs 287ms 5.4ms 71.4MB 260ms 30ms dotnet 9.0.302
csharp 6.cs 390ms 1.0ms 70.8MB 363ms 27ms dotnet 9.0.302
csharp 5.cs 436ms 2.7ms 47.0MB 410ms 20ms dotnet/aot 9.0.302

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
chapel 1.chpl 1210ms 43ms 29.0MB 1203ms 0ms chpl 1.31.0
csharp 1.cs 2816ms 12ms 13.1MB 2773ms 30ms dotnet/aot 9.0.302
csharp 1.cs 2953ms 7.1ms 35.1MB 3037ms 30ms dotnet 9.0.302

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
chapel 1.chpl 315ms 12ms 29.1MB 310ms 0ms chpl 1.31.0
csharp 1.cs 718ms 4.0ms 13.0MB 700ms 7ms dotnet/aot 9.0.302
csharp 1.cs 995ms 4.8ms 35.4MB 1080ms 20ms dotnet 9.0.302

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 1869ms 0.3ms 10.3MB 7317ms 7ms dotnet/aot 9.0.302
csharp 3-m.cs 1921ms 2.8ms 30.3MB 7360ms 10ms dotnet 9.0.302
chapel 1-m.chpl 1924ms 19ms 28.9MB 3823ms 0ms chpl 1.31.0
chapel 1.chpl 3743ms 29ms 28.8MB 3740ms 0ms chpl 1.31.0
csharp 3-m.cs 4724ms 142ms 25.7MB 18023ms 13ms mono 6.12.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
chapel 1-m.chpl 492ms 2.1ms 28.9MB 953ms 0ms chpl 1.31.0
csharp 3-m.cs 494ms 15ms 10.5MB 1790ms 3ms dotnet/aot 9.0.302
csharp 3-m.cs 536ms 5.0ms 30.0MB 1870ms 10ms dotnet 9.0.302
chapel 1.chpl 939ms 3.2ms 28.8MB 933ms 0ms chpl 1.31.0
csharp 3-m.cs 1202ms 28ms 25.4MB 4503ms 10ms mono 6.12.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 3-m.cs 128ms 0.7ms 10.3MB 450ms 3ms dotnet/aot 9.0.302
chapel 1-m.chpl 138ms 9.9ms 28.9MB 250ms 3ms chpl 1.31.0
csharp 3-m.cs 179ms 3.7ms 28.5MB 503ms 10ms dotnet 9.0.302
chapel 1.chpl 248ms 1.3ms 28.8MB 240ms 0ms chpl 1.31.0
csharp 3-m.cs 352ms 12ms 25.4MB 1193ms 10ms mono 6.12.0