requestCore: Request a core for multicore processing

In MINATILO/FUTURE: Unified Parallel and Distributed Processing in R for Everyone

Description

If no cores are available, the current process blocks until a core is available.

Usage

requestCore(
  await,
  workers = availableCores(),
  timeout = getOption("future.wait.timeout",
    as.numeric(Sys.getenv("R_FUTURE_WAIT_TIMEOUT", 30 * 24 * 60 * 60))),
  delta = getOption("future.wait.interval",
    as.numeric(Sys.getenv("R_FUTURE_WAIT_INTERVAL", "0.2"))),
  alpha = getOption("future.wait.alpha", as.numeric(Sys.getenv("R_FUTURE_WAIT_ALPHA",
    "1.01")))
)

Arguments

await	A function used to try to "collect" finished multicore subprocesses.
workers	Total number of workers available.
timeout	Maximum waiting time (in seconds) allowed before a timeout error is generated.
delta	Then base interval (in seconds) to wait between each try.
alpha	A multiplicative factor used to increase the wait interval after each try.

Value

Invisible TRUE. If no cores are available after extensive waiting, then a timeout error is thrown.

MINATILO/FUTURE documentation built on Dec. 17, 2021, 1:21 a.m.