Hello Neil, Tuesday, April 7, 2009, 7:33:25 PM, you wrote:
How about using unsafeInterleaveIO to get a lazy suspension of the result of each action, and then using par to spark off each of them? If that works you can reuse the existing task-parallel system of GHC to do the heavily lifting for you, instead of having to write your own.
par is likely to spark all the computations, and then switch between them - which will mean I've got more than N things running in parallel.
par/GHC RTS limits amount of Haskell threads running simultaneously. with a system call marked as safe, Capability will be freed while we execute external program so nothing will be limited except for amount of tasks *starting* (as opposite to running) simultaneously :))) -- Best regards, Bulat mailto:Bulat.Ziganshin@gmail.com