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# Comparing C# and V Boids Algorithm Implementations
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## Running the C# program:
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```
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dotnet run
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```
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Creating a release version of the C# program:
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```
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dotnet publish -c Release -r ubuntu.20.04-x64
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```
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The generated executable will be in
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`/v/vnew/bench/vectors/bin/Release/net7.0/ubuntu.20.04-x64/publish/vectors`
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Its size is ~64MB . After stripping, the executable shrinks to just 11MB,
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but unfortunately it also stops running after stripping :-| .
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## Compiling and running the V program:
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```
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v crun vectors.v
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```
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... produces and runs a `vectors` executable which is ~1.3MB in size.
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Compiling and running the V program, compiled with -prod:
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```
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v -prod crun vectors.v
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```
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... produces and runs a `vectors` executable which is ~176KB in size.
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After stripping, the executable shrinks to 157KB. It can still run after
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stripping.
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Note: using `crun` will make sure that the compilation will happen just
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once at the start, and then the executable will be just reused by the
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subsequent commands with identical options. It will also ensure that
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the compiled executable will not be removed, unlike `run` .
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## Some measurements and comparisons
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Note: the following was done on Intel(R) Core(TM) i3-3225, 16GB RAM:
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```
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#0 13:41:35 ᛋ master /v/vnew/bench/vectors❱rm -rf vectors
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#0 13:41:49 ᛋ master /v/vnew/bench/vectors❱
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#0 13:41:49 ᛋ master /v/vnew/bench/vectors❱v -o vectors_development vectors.v
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#0 13:42:14 ᛋ master /v/vnew/bench/vectors❱v -o vectors_production -prod vectors.v
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#0 13:42:28 ᛋ master /v/vnew/bench/vectors❱
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#0 13:42:29 ᛋ master /v/vnew/bench/vectors❱hyperfine ./bin/Release/net7.0/ubuntu.20.04-x64/publish/vectors ./vectors_development ./vectors_production
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Benchmark 1: ./bin/Release/net7.0/ubuntu.20.04-x64/publish/vectors
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Time (mean ± σ): 347.4 ms ± 7.4 ms [User: 334.4 ms, System: 13.0 ms]
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Range (min … max): 340.2 ms … 361.7 ms 10 runs
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Benchmark 2: ./vectors_development
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Time (mean ± σ): 882.6 ms ± 14.0 ms [User: 880.3 ms, System: 2.3 ms]
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Range (min … max): 862.4 ms … 912.9 ms 10 runs
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Benchmark 3: ./vectors_production
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Time (mean ± σ): 217.9 ms ± 9.4 ms [User: 216.8 ms, System: 0.9 ms]
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Range (min … max): 206.4 ms … 241.3 ms 12 runs
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Summary
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./vectors_production ran
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1.59 ± 0.08 times faster than ./bin/Release/net7.0/ubuntu.20.04-x64/publish/vectors
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4.05 ± 0.19 times faster than ./vectors_development
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#0 13:43:00 ᛋ master /v/vnew/bench/vectors❱
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#0 13:45:07 ᛋ master /v/vnew/bench/vectors❱ls -nlarS ./bin/Release/net7.0/ubuntu.20.04-x64/publish/vectors ./vectors_development ./vectors_production
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-rwxrwxr-x 1 1000 1000 179384 Sep 6 13:42 ./vectors_production
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-rwxrwxr-x 1 1000 1000 1320764 Sep 6 13:42 ./vectors_development
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-rwxr-xr-x 1 1000 1000 66732821 Sep 6 13:40 ./bin/Release/net7.0/ubuntu.20.04-x64/publish/vectors
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#0 13:45:12 ᛋ master /v/vnew/bench/vectors❱
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#0 13:53:12 ᛋ master /v/vnew/bench/vectors❱alias xtime='/usr/bin/time -f "CPU: %Us\tReal: %es\tElapsed: %E\tRAM: %MKB\t%C"'
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#0 13:53:42 ᛋ master /v/vnew/bench/vectors❱xtime ./vectors_development
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5.0498380931718074e+07 - 5.0504723697762154e+07 - 5.040198063489048e+07
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0.0 - 0.0 - 0.0
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CPU: 0.87s Real: 0.87s Elapsed: 0:00.87 RAM: 4404KB ./vectors_development
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#0 13:53:52 ᛋ master /v/vnew/bench/vectors❱xtime ./vectors_production
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4.971971434731853e+07 - 4.973120986372047e+07 - 5.030988639116867e+07
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0.0 - 0.0 - 0.0
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CPU: 0.20s Real: 0.20s Elapsed: 0:00.20 RAM: 3228KB ./vectors_production
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#0 13:53:58 ᛋ master /v/vnew/bench/vectors❱xtime ./bin/Release/net7.0/ubuntu.20.04-x64/publish/vectors
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(49627678.97075553, 50302418.6269631, 49705582.70645027)
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(0, 0, 0)
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CPU: 0.33s Real: 0.34s Elapsed: 0:00.34 RAM: 30544KB ./bin/Release/net7.0/ubuntu.20.04-x64/publish/vectors
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#0 13:54:02 ᛋ master /v/vnew/bench/vectors❱
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#0 14:01:33 ᛋ master /v/vnew/bench/vectors❱
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#0 14:01:35 ᛋ master /v/vnew/bench/vectors❱xtime v vectors.v
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CPU: 0.41s Real: 0.36s Elapsed: 0:00.36 RAM: 59412KB v vectors.v
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#0 14:01:41 ᛋ master /v/vnew/bench/vectors❱
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#0 14:01:42 ᛋ master /v/vnew/bench/vectors❱xtime v -prod vectors.v
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CPU: 4.97s Real: 5.11s Elapsed: 0:05.11 RAM: 80732KB v -prod vectors.v
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#0 14:01:48 ᛋ master /v/vnew/bench/vectors❱
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#0 14:01:50 ᛋ master /v/vnew/bench/vectors❱xtime dotnet publish -c Release -r ubuntu.20.04-x64
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MSBuild version 17.7.1+971bf70db for .NET
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Determining projects to restore...
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All projects are up-to-date for restore.
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vectors -> /v/vnew/bench/vectors/bin/Release/net7.0/ubuntu.20.04-x64/vectors.dll
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vectors -> /v/vnew/bench/vectors/bin/Release/net7.0/ubuntu.20.04-x64/publish/
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CPU: 2.34s Real: 2.64s Elapsed: 0:02.64 RAM: 159816KB dotnet publish -c Release -r ubuntu.20.04-x64
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#0 14:01:56 ᛋ master /v/vnew/bench/vectors❱
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```
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