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[R] Very small performance tweaks #9837

Merged
merged 2 commits into from
Dec 4, 2023
Merged

[R] Very small performance tweaks #9837

merged 2 commits into from
Dec 4, 2023

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david-cortes
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ref #9810

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.

@trivialfis trivialfis merged commit 9c56916 into dmlc:master Dec 4, 2023
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@trivialfis trivialfis trivialfis approved these changes

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