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RfastOfficial / Rfast

A collection of Rfast functions for data analysis. Note 1: The vast majority of the functions accept matrices only, not data.frames. Note 2: Do not have matrices or vectors with have missing data (i.e NAs). We do no check about them and C++ internally transforms them into zeros (0), so you may get wrong results. Note 3: In general, make sure you give the correct input, in order to get the correct output. We do no checks and this is one of the many reasons we are fast.
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Running rowMedians with parallel = TRUE on certain matrices can crash R session #106

Open StevenMayher opened 3 months ago

StevenMayher commented 3 months ago

Describe the bug I haven't fully deduced the precise nature of the following bug, but it seems that running rowMedians with parallel = TRUE on the matrix generated below crashes my R session:

To Reproduce

library(Rfast)
set.seed(42)
mat = matrix(sample(100000, replace = TRUE), nrow = 1000, ncol = 100)
rowMedians(mat, parallel = TRUE)

Expected behavior

rowMedians(mat, parallel = FALSE)

Desktop:

sessionInfo()

R version 4.3.3 (2024-02-29 ucrt) Platform: x86_64-w64-mingw32/x64 (64-bit) Running under: Windows 10 x64 (build 19045)

Matrix products: default

locale: [1] LC_COLLATE=English_United States.utf8 LC_CTYPE=English_United States.utf8 LC_MONETARY=English_United States.utf8 LC_NUMERIC=C
[5] LC_TIME=English_United States.utf8

time zone: America/New_York tzcode source: internal

attached base packages: [1] stats graphics grDevices utils datasets methods base

other attached packages: [1] Rfast_2.1.0 RcppParallel_5.1.7 RcppZiggurat_0.1.6 Rcpp_1.0.12

loaded via a namespace (and not attached): [1] compiler_4.3.3 parallel_4.3.3 tools_4.3.3 rstudioapi_0.15.0