Skip to content

test and confirm new parallel subset performance #3175

New issue
New issue
Closed
#4484
Closed
test and confirm new parallel subset performance#3175
#4484
Labels
openmpperformance
Milestone
1.13.0
@jangorecki

Description

@jangorecki
jangorecki
opened on Dec 1, 2018

Matt commented :

data.table/src/subset.c

Lines 27 to 30 in 1847500

// For small n such as 2,3,4 etc we hope OpenMP will be sensible inside it and not create a team with each thread doing just one item. Otherwise,
// call overhead would be too high for highly iterated calls on very small subests. TODO: test and confirm
// Futher, we desire (currently at least) to stress-test the threaded code (especially in latest R-devel) on small data to reduce chance that bugs
// arise only over a threshold of n.

Metadata

Metadata

Assignees

No one assigned

    Labels

    openmpperformance

    Type

    No type

    Projects

    No projects

    Milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions