A batchtools backend that resolves futures sequentially in the current R session — batchtools

The batchtools interactive backend is useful for verifying parts of your batchtools setup locally, while still being able to do interactive debugging.

Usage

batchtools_interactive(..., fs.latency = 0)

Arguments

fs.latency: [numeric(1)]
Expected maximum latency of the file system, in seconds. Set to a positive number for network file systems like NFS which enables more robust (but also more expensive) mechanisms to access files and directories. Usually safe to set to 0 to disable the heuristic, e.g. if you are working on a local file system.
...: Not used.

Details

Batchtools interactive futures use batchtools cluster functions created by batchtools::makeClusterFunctionsInteractive() with external = TRUE.

An alternative to the batchtools interactive backend is to use plan(future::sequential), which is a faster way process futures sequentially and that also can be debugged interactively.

Examples

plan(batchtools_interactive)

message("Main process ID: ", Sys.getpid())
#> Main process ID: 620860

f <- future(Sys.getpid())
pid <- value(f)
message("Worker process ID: ", pid)
#> Worker process ID: 620860