On Mon, Jan 24, 2011 at 11:05 AM, Armando Blancas <armando_blan...@yahoo.com> wrote: >> This is much faster than either of the other eager-pmaps I posted to >> this thread, and yet it's only using 60% CPU on my dual-core box. That >> means there's still another x1.6 or so speedup possible(!) but I'm not >> sure how. >> > > Could -server make a difference here?
I did some more investigating of this. It seems that pmap itself only uses ~70% CPU on my machine. The same happens with eager-pmap and with the jumbled-pmap I just posted. All produce results comparably fast when given a giant math problem to chug on. Probably it's an artifact of the test cases mainly using jobs that either are fast or use Thread/sleep to be artificially slow. I'm not sure why this would persist when the unit of parallelization is a map of the job over a sizable partition or the job has a busy-loop in it instead of a Thread/sleep to make it heavyweight, though. -- 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
