Data.Repa.Eval.Gang

Gang Primitives.

Documentation

data Gang

A Gang is a group of threads that execute arbitrary work requests.

Instances

Show Gang

Methods

showsPrec :: Int -> Gang -> ShowS

show :: Gang -> String

showList :: [Gang] -> ShowS

forkGang :: Int -> IO Gang

Fork a Gang with the given number of threads (at least 1).

gangSize :: Gang -> Int#

O(1). Yield the number of threads in the Gang.

gangIO :: Gang -> (Int# -> IO ()) -> IO ()

Issue work requests for the Gang and wait until they complete.

If the gang is already busy then print a warning to stderr and just run the actions sequentially in the requesting thread.

gangST :: Gang -> (Int# -> ST s ()) -> ST s ()

Same as gangIO but in the ST monad.