R Under development (unstable) (2024-01-14 r85805 ucrt) -- "Unsuffered Consequences"
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> 
> # gen_preproc <- function(n, m) {
> #   X <- matrix(rnorm(m*n), n,m)
> #   p <- center()
> #   proc <- prep(p)
> #   print(pryr::object_size(proc))
> #   X0 <- init_transform(proc, X)
> #   print(pryr::object_size(proc))
> #   rm(X)
> #   rm(X0)
> #   proc
> # }
> # 
> # library(pryr)
> # 
> # p1 <- gen_preproc(100,1000)
> # p2 <- gen_preproc(10,1000)
> # p3 <- gen_preproc(1,1000)
> # 
> # pryr::object_size(p1[[2]])
> # pryr::object_size(p2[[2]])
> # pryr::object_size(p3[[2]])
> # 
> # 
> # X <- matrix(rnorm(100*1000), 100,1000)
> # pcres1 <- pca(X, ncomp=50)
> # 
> # X <- matrix(rnorm(10*1000), 10,1000)
> # pcres1 <- pca(X, ncomp=50)
> 
> proc.time()
   user  system elapsed 
   0.09    0.10    0.14