Programming Language and compiler
Benchmarks

C++ VS D benchmarks

Current benchmark data was generated on Sat Nov 16 2024, 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.)

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-im.d 393ms 36ms 5.1MB 1413ms 0ms ldc2 1.39.0
cpp 1-im.cpp 403ms 8.3ms 4.5MB 1543ms 0ms g++ 11.4.0
cpp 1-im.cpp 405ms 7.4ms 7.9MB 1547ms 3ms clang++ 14.0.0-1ubuntu1.1
d 2-im.d 1136ms 27ms 5.1MB 4287ms 0ms ldc2 1.39.0
d 1-i.d 1481ms 0.7ms 2.8MB 1467ms 0ms ldc2 1.39.0
d 1.d 3136ms 26ms 2.8MB 3123ms 0ms ldc2 1.39.0
d 2-i.d 3223ms 4.8ms 2.8MB 3210ms 0ms ldc2 1.39.0
d 1.d 3502ms 2.1ms 4.6MB 3490ms 0ms dmd 2.109.1
d 1-im.d 4227ms 47ms 8.7MB 16457ms 0ms dmd 2.109.1
d 1-i.d timeout 0.0ms 4.5MB 4990ms 0ms dmd 2.109.1
d 2-i.d timeout 0.0ms 4.6MB 4990ms 0ms dmd 2.109.1
d 2-im.d timeout 0.0ms 6.8MB 19710ms 10ms dmd 2.109.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-im.d 40ms 2.1ms 4.9MB 110ms 0ms ldc2 1.39.0
cpp 1-im.cpp 42ms 1.0ms 5.9MB 123ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 1-im.cpp 44ms 0.9ms 4.5MB 140ms 0ms g++ 11.4.0
d 2-im.d 100ms 1.6ms 5.1MB 343ms 0ms ldc2 1.39.0
d 1-i.d 124ms 0.3ms 2.8MB 117ms 0ms ldc2 1.39.0
d 1.d 264ms 4.4ms 2.8MB 253ms 0ms ldc2 1.39.0
d 2-i.d 267ms 1.0ms 2.9MB 253ms 0ms ldc2 1.39.0
d 1.d 296ms 2.1ms 4.6MB 287ms 0ms dmd 2.109.1
d 1-im.d 355ms 4.0ms 6.9MB 1340ms 0ms dmd 2.109.1
d 2-im.d 531ms 2.2ms 8.8MB 1990ms 0ms dmd 2.109.1
d 1-i.d 863ms 34ms 4.5MB 853ms 0ms dmd 2.109.1
d 2-i.d 1415ms 9.9ms 4.5MB 1403ms 0ms dmd 2.109.1

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 1.0ms 0.0ms 1.4MB 0ms 0ms g++ 11.4.0
cpp 1.cpp 1.4ms 0.1ms 2.3MB 0ms 0ms clang++ 14.0.0-1ubuntu1.1
d 1.d 1.7ms 0.2ms 2.9MB 0ms 0ms ldc2 1.39.0
d 1.d 2.3ms 0.3ms 5.1MB 0ms 0ms dmd 2.109.1

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 166ms 0.2ms 1.5MB 160ms 0ms g++ 11.4.0
cpp 0-i.cpp 170ms 0.3ms 2.3MB 160ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 1.cpp 313ms 1.4ms 1.9MB 300ms 0ms g++ 11.4.0
cpp 1.cpp 314ms 0.4ms 2.3MB 300ms 0ms clang++ 14.0.0-1ubuntu1.1
d 2.d 361ms 0.5ms 2.9MB 350ms 0ms ldc2 1.39.0
d 1.d 361ms 1.0ms 2.9MB 350ms 0ms ldc2 1.39.0
d 1.d 680ms 2.2ms 4.6MB 670ms 0ms dmd 2.109.1
d 2.d 2009ms 2.2ms 4.6MB 2000ms 0ms dmd 2.109.1

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 18ms 0.1ms 1.5MB 10ms 0ms g++ 11.4.0
cpp 0-i.cpp 19ms 0.1ms 2.3MB 10ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 1.cpp 34ms 0.8ms 1.8MB 23ms 0ms g++ 11.4.0
cpp 1.cpp 34ms 0.5ms 2.3MB 27ms 0ms clang++ 14.0.0-1ubuntu1.1
d 1.d 39ms 0.5ms 2.9MB 30ms 0ms ldc2 1.39.0
d 2.d 39ms 0.7ms 2.9MB 30ms 0ms ldc2 1.39.0
d 1.d 71ms 0.9ms 4.8MB 63ms 0ms dmd 2.109.1
d 2.d 203ms 0.2ms 4.6MB 190ms 0ms dmd 2.109.1

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 315ms 2.3ms 77.1MB 300ms 0ms dmd 2.109.1
d 1.d 352ms 4.4ms 43.7MB 333ms 3ms ldc2 1.39.0
cpp 1.cpp 484ms 2.1ms 7.3MB 470ms 0ms g++ 11.4.0
cpp 1.cpp 530ms 0.3ms 7.7MB 520ms 0ms clang++ 14.0.0-1ubuntu1.1
d 2.d 821ms 4.2ms 47.5MB 800ms 10ms ldc2 1.39.0
d 2.d 1162ms 1.7ms 49.3MB 1143ms 3ms dmd 2.109.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 61ms 1.8ms 13.5MB 43ms 3ms ldc2 1.39.0
d 1.d 66ms 0.8ms 24.1MB 57ms 0ms dmd 2.109.1
cpp 1.cpp 120ms 2.3ms 3.6MB 110ms 0ms g++ 11.4.0
cpp 1.cpp 132ms 0.8ms 4.0MB 120ms 0ms clang++ 14.0.0-1ubuntu1.1
d 2.d 203ms 0.8ms 15.7MB 190ms 0ms ldc2 1.39.0
d 2.d 291ms 1.3ms 17.6MB 277ms 3ms dmd 2.109.1

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 470ms 3.4ms 5.4MB 1820ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 8-m.cpp 484ms 2.2ms 4.2MB 1877ms 0ms g++ 11.4.0
cpp 6-im.cpp 931ms 22ms 7.4MB 3610ms 10ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 932ms 17ms 4.3MB 3617ms 0ms g++ 11.4.0
d 1.d 3584ms 9.1ms 4.1MB 3570ms 0ms ldc2 1.39.0
d 1.d 3665ms 31ms 5.9MB 3653ms 0ms dmd 2.109.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 125ms 0.5ms 5.4MB 450ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 8-m.cpp 129ms 0.9ms 4.1MB 473ms 0ms g++ 11.4.0
cpp 6-im.cpp 239ms 2.6ms 5.4MB 897ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 241ms 2.7ms 4.2MB 917ms 0ms g++ 11.4.0
d 1.d 902ms 0.5ms 3.5MB 890ms 0ms ldc2 1.39.0
d 1.d 911ms 2.1ms 5.8MB 900ms 0ms dmd 2.109.1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 38ms 0.7ms 7.3MB 107ms 3ms clang++ 14.0.0-1ubuntu1.1
cpp 8-m.cpp 40ms 1.0ms 4.0MB 127ms 0ms g++ 11.4.0
cpp 6-im.cpp 67ms 0.4ms 5.4MB 223ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 69ms 1.4ms 4.0MB 233ms 0ms g++ 11.4.0
d 1.d 227ms 0.4ms 3.0MB 220ms 0ms ldc2 1.39.0
d 1.d 235ms 1.0ms 4.9MB 220ms 0ms dmd 2.109.1