SpeciaLUT
shadow
SpeciaLUT | shadow | |
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3 | 1 | |
26 | 0 | |
- | - | |
3.4 | 10.0 | |
7 months ago | about 5 years ago | |
C++ | C++ | |
BSD 2-clause "Simplified" License | MIT License |
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SpeciaLUT
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C++ Show and Tell - December 2022
I made SpeciaLUT to convert bool/enum runtime tests to compile-time conditionals — by compiling all branching combinations in hot functions and saving them in a lookup-table, so the optimal one can be called at runtime. Reason: as an HPC consultant I encountered many codes that grew without good architecture, in which features would just be added and branching would propagate through all levels. This yields 10% to 50% performance increase in such codes.
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Runtime-constant propagation and branching optimization strategy
I have implemented this as a C++ library, where you extract const states as template parameters, and the library compiles all specializations and allows you to choose the optimal one at runtime.
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Runtime calling of a template specialisation using compile-time LUTs
So here's my C++20 implementation of the above: SpeciaLUT
shadow
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C++ Show and Tell - December 2022
I wrote this reflection library several years ago to teach myself some template metaprogramming. It was originally written for C++11, but upgraded to C++14 after a while to make use of some of the improvements. It's been stale ever since, but I sometimes refer back to it when I need subsets of the functionality and need a refresher on how to write certain functionality even though I would probably have done things very different today :) https://github.com/bergesenha/shadow
What are some alternatives?
biteopt - Derivative-Free Global Optimization Method (C++, Python binding)
teylogger - ⌨️ - The Teylogger tiny and complete keylogger for Windows
uninttp - A universal type for non-type template parameters for C++20 or later.
AutoGeodesics - Easily integrate the geodesics equation using automatic differentiation.
relion - Image-processing software for cryo-electron microscopy
introspective - Compile-Time Reflection in C++ for use with Scripting Languages
with-branching - An implementation of macroexpand-time conditionalization.
static_string - Experimental compile-time string manipulation C++17 library
LazyMath - Complex Conjugate Gradient linear solver and Levenberg-Marquardt minimizer with and without constraints in C++
LinearAlgebra - C++20 Linear Algebra header only library, with lots of support for complex operations.
Thrust - [ARCHIVED] The C++ parallel algorithms library. See https://github.com/NVIDIA/cccl