Programming Language and compiler
Benchmarks

C++ VS D benchmarks

Current benchmark data was generated on Wed Feb 08 2023, full log can be found HERE

CONTRIBUTIONS are WELCOME!

[x86_64][2 cores] Intel(R) Xeon(R) Platinum 8171M CPU @ 2.60GHz (Model 85)

* -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.)

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1-im.cpp 794ms 8.7ms 3.9MB 1543ms 0ms clang++ 14.0.0
d 1-im.d 799ms 0.9ms 1.5MB 1513ms 0ms ldc2 1.30.0
cpp 1-im.cpp 823ms 2.4ms 1.4MB 1570ms 0ms g++ 12.2.0
d 1-i.d 1483ms 6.0ms 1.5MB 1470ms 0ms ldc2 1.30.0
d 2-im.d 3038ms 42ms 1.5MB 5880ms 0ms ldc2 1.30.0
d 1.d 4796ms 40ms 1.5MB 4780ms 0ms ldc2 1.30.0
d 1-i.d timeout 0.0ms 2.2MB 4983ms 0ms dmd 2.102.0
d 1-im.d timeout 0.0ms 2.6MB 9783ms 3ms dmd 2.102.0
d 1.d timeout 0.0ms 2.8MB 4983ms 0ms dmd 2.102.0
d 2-i.d timeout 0.0ms 2.6MB 4983ms 0ms dmd 2.102.0
d 2-im.d timeout 0.0ms 2.7MB 9860ms 0ms dmd 2.102.0
d 2-i.d timeout 0.0ms 1.6MB 4987ms 0ms ldc2 1.30.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1-im.cpp 75ms 1.9ms 4.0MB 127ms 0ms clang++ 14.0.0
cpp 1-im.cpp 79ms 2.5ms 1.4MB 130ms 0ms g++ 12.2.0
d 1-im.d 79ms 2.1ms 1.5MB 120ms 0ms ldc2 1.30.0
d 1-i.d 134ms 13ms 1.6MB 123ms 0ms ldc2 1.30.0
d 2-im.d 272ms 7.5ms 1.6MB 480ms 0ms ldc2 1.30.0
d 1.d 386ms 6.0ms 1.6MB 377ms 0ms ldc2 1.30.0
d 1.d 420ms 0.6ms 2.7MB 407ms 0ms dmd 2.102.0
d 2-i.d 480ms 0.4ms 1.5MB 470ms 0ms ldc2 1.30.0
d 1-im.d 657ms 120ms 2.7MB 1037ms 0ms dmd 2.102.0
d 2-im.d 923ms 22ms 2.9MB 1730ms 0ms dmd 2.102.0
d 1-i.d 1057ms 43ms 2.2MB 1047ms 0ms dmd 2.102.0
d 2-i.d 1622ms 10ms 2.6MB 1613ms 0ms dmd 2.102.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 2.4ms 0.7ms 1.3MB 0ms 0ms g++ 12.2.0
cpp 1.cpp 2.4ms 0.7ms 1.4MB 0ms 0ms clang++ 14.0.0
d 1.d 2.8ms 1.0ms 4.4MB 0ms 0ms dmd 2.102.0
d 1.d 3.3ms 0.9ms 2.9MB 0ms 0ms ldc2 1.30.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 218ms 1.5ms 1.4MB 203ms 0ms g++ 12.2.0
cpp 0-i.cpp 253ms 4.3ms 1.4MB 243ms 0ms clang++ 14.0.0
cpp 1.cpp 413ms 9.0ms 1.4MB 400ms 0ms g++ 12.2.0
cpp 1.cpp 417ms 9.1ms 1.5MB 407ms 0ms clang++ 14.0.0
d 1.d 542ms 7.3ms 1.5MB 527ms 0ms ldc2 1.30.0
d 2.d 577ms 7.9ms 1.5MB 563ms 0ms ldc2 1.30.0
d 1.d 1466ms 20ms 2.6MB 1453ms 0ms dmd 2.102.0
d 2.d 2593ms 6.6ms 2.7MB 2580ms 0ms dmd 2.102.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 25ms 0.3ms 1.3MB 13ms 0ms g++ 12.2.0
cpp 0-i.cpp 28ms 0.2ms 1.4MB 20ms 0ms clang++ 14.0.0
cpp 1.cpp 45ms 0.3ms 1.4MB 40ms 0ms clang++ 14.0.0
cpp 1.cpp 46ms 1.9ms 1.3MB 40ms 0ms g++ 12.2.0
d 1.d 57ms 0.4ms 1.5MB 50ms 0ms ldc2 1.30.0
d 2.d 60ms 0.3ms 1.5MB 47ms 0ms ldc2 1.30.0
d 1.d 155ms 4.8ms 2.6MB 140ms 0ms dmd 2.102.0
d 2.d 264ms 4.0ms 2.6MB 257ms 0ms dmd 2.102.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 769ms 8.0ms 7.4MB 750ms 0ms clang++ 14.0.0
cpp 1.cpp 769ms 17ms 7.7MB 753ms 0ms g++ 12.2.0
d 1.d 942ms 18ms 42.5MB 907ms 13ms ldc2 1.30.0
d 2.d 966ms 16ms 48.7MB 930ms 17ms ldc2 1.30.0
d 1.d 988ms 16ms 76.1MB 953ms 20ms dmd 2.102.0
d 2.d 1829ms 35ms 50.0MB 1800ms 13ms dmd 2.102.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 142ms 5.6ms 14.1MB 127ms 0ms ldc2 1.30.0
d 1.d 161ms 1.4ms 26.0MB 140ms 0ms dmd 2.102.0
cpp 1.cpp 177ms 1.4ms 4.0MB 167ms 0ms g++ 12.2.0
cpp 1.cpp 185ms 4.4ms 3.9MB 173ms 0ms clang++ 14.0.0
d 2.d 232ms 6.0ms 15.4MB 217ms 0ms ldc2 1.30.0
d 2.d 458ms 1.4ms 16.7MB 443ms 0ms dmd 2.102.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 1061ms 4.5ms 3.7MB 2067ms 3ms clang++ 14.0.0
cpp 7-m.cpp 1065ms 5.3ms 3.3MB 2080ms 0ms clang++ 14.0.0
cpp 8-m.cpp 1071ms 5.9ms 1.3MB 2087ms 0ms g++ 12.2.0
cpp 7-m.cpp 1071ms 11ms 1.4MB 2073ms 0ms g++ 12.2.0
cpp 6-im.cpp 2187ms 29ms 1.3MB 4277ms 0ms g++ 12.2.0
cpp 6-im.cpp 2209ms 24ms 3.4MB 4327ms 3ms clang++ 14.0.0
d 1.d 3326ms 2880ms 5.1MB 4983ms 0ms dmd 2.102.0
d 1.d 4357ms 8.9ms 3.7MB 4343ms 0ms ldc2 1.30.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 7-m.cpp 271ms 2.1ms 1.3MB 510ms 0ms g++ 12.2.0
cpp 7-m.cpp 278ms 3.3ms 3.3MB 517ms 0ms clang++ 14.0.0
cpp 8-m.cpp 281ms 2.7ms 1.3MB 523ms 0ms g++ 12.2.0
cpp 8-m.cpp 283ms 8.5ms 3.5MB 527ms 0ms clang++ 14.0.0
cpp 6-im.cpp 546ms 13ms 1.3MB 1053ms 0ms g++ 12.2.0
cpp 6-im.cpp 560ms 0.6ms 3.3MB 1077ms 3ms clang++ 14.0.0
d 1.d 1091ms 0.8ms 3.5MB 1080ms 0ms ldc2 1.30.0
d 1.d 1256ms 3.0ms 5.1MB 1243ms 0ms dmd 2.102.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 7-m.cpp 73ms 1.9ms 1.4MB 120ms 0ms g++ 12.2.0
cpp 8-m.cpp 77ms 0.2ms 3.3MB 130ms 0ms clang++ 14.0.0
cpp 8-m.cpp 78ms 1.5ms 1.3MB 130ms 0ms g++ 12.2.0
cpp 7-m.cpp 79ms 2.5ms 3.5MB 130ms 0ms clang++ 14.0.0
cpp 6-im.cpp 151ms 0.9ms 1.3MB 273ms 0ms g++ 12.2.0
cpp 6-im.cpp 152ms 0.4ms 3.7MB 273ms 0ms clang++ 14.0.0
d 1.d 278ms 0.5ms 3.0MB 267ms 0ms ldc2 1.30.0
d 1.d 318ms 1.4ms 4.4MB 310ms 0ms dmd 2.102.0