press {bench} | R Documentation |
press()
is used to run bench::mark()
across a grid of parameters and
then press the results together.
The parameters you want to set are given as named arguments and a grid of all possible combinations is automatically created.
The code to setup and benchmark is given by one unnamed expression (often
delimited by \{
).
If replicates are desired a dummy variable can be used, e.g. rep = 1:5
for
replicates.
press(..., .grid = NULL)
... |
If named, parameters to define, if unnamed the expression to run. Only one unnamed expression is permitted. |
.grid |
A pre-build grid of values to use, typically a data.frame or tibble. This is useful if you only want to use a subset of all possible combinations. |
# Helper function to create a simple data.frame of the specified dimensions create_df <- function(rows, cols) { as.data.frame(setNames( replicate(cols, runif(rows, 1, 1000), simplify = FALSE), rep_len(c("x", letters), cols))) } # Run 4 data sizes across 3 samples with 2 replicates (24 total benchmarks) press( rows = c(1000, 10000), cols = c(10, 100), rep = 1:2, { dat <- create_df(rows, cols) bench::mark( min_time = .05, bracket = dat[dat$x > 500, ], which = dat[which(dat$x > 500), ], subset = subset(dat, x > 500) ) } )