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[R] Very small performance tweaks #9837

Merged

trivialfis merged 2 commits into dmlc:master from david-cortes:small_optimizations

Dec 4, 2023

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david-cortes commented Dec 2, 2023

This PR makes some very small performance tweaks to the R interface:

Pre-allocating or reserving vectors instead of allocating them dynamically.
Avoiding parallelization when not beneficial.
Removing unused code for DMatrixCtx.

david-cortes added 2 commits

December 2, 2023 18:55


          very minor performance tweaks

9f342dc


          don't use omp simd in msvc

75849ac

trivialfis approved these changes

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trivialfis merged commit 9c56916 into dmlc:master

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