On Tue, Jan 25, 2011 at 10:21 AM, Michael Gardner <gardne...@gmail.com> wrote: > On Jan 25, 2011, at 9:06 AM, Ken Wesson wrote: > >> sh is asynchronous. It calls Runtime/exec, which launches the sleep as >> a separate process and immediately returns a Process object (which >> your pmap should be returning a seq of). It may produce n+2 Process >> objects at a time but it produces them all before the first of the >> asynchronous sleep processes finishes, so for a while all of the >> latter are running at the same time. > > Really? The documentation for sh claims to return a map, which is what I > observe.
Well, that's weird, because the documentation *I* read says it composits the arguments together into a command line and hands off to Runtime/exec. And the documentation of *that* says it returns a Process object and the process it launches runs asynchronously. > And the call to sh doesn't return until the sub-process has finished If that were the case, though, your pmap should indeed only be running cores+2 instances at once. Which is not what you observed. Something's hinky here. -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
