> Doesn't pmap have to construct the whole sequence explicitly in order > to map its execution across more than one processor? or does it take > in a lazy fashion?
Semi-lazy, according to the doc: Like map, except f is applied in parallel. Semi-lazy in that the parallel computation stays ahead of the consumption, but doesn't realize the entire result unless required. But I don't think lazyness is the problem: user=> (def r (doall (map inc (range 1000000)))) #'user/r user=> (count r) 1000000 user=> (pmap inc [0]) java.lang.OutOfMemoryError: Java heap space (NO_SOURCE_FILE:0) That is, map's fine with fully realizing a sequence of a million items; & pmap consumes all of the heap with a sequence of one item. Perry --~--~---------~--~----~------------~-------~--~----~ 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 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 -~----------~----~----~----~------~----~------~--~---
