Hello Wishnu, That is slightly odd. What CPU and operating system are you running on? Include Kernel versions if Linux.
Cheers, Edward Excerpts from Wishnu Prasetya's message of Sun Aug 14 14:11:36 -0400 2011: > Hi guys, > > I'm new in parallel programming with Haskell. I made a simple test > program using that par combinator etc, and was a bit unhappy that it > turns out to be slower than its sequential version. But firstly, I dont > fully understand how to read the runtime report produced by GHC with -s > option: > > SPARKS: 5 (5 converted, 0 pruned) > > INIT time 0.02s ( 0.01s elapsed) > MUT time 3.46s ( 0.89s elapsed) > GC time 5.49s ( 1.46s elapsed) > EXIT time 0.00s ( 0.00s elapsed) > Total time 8.97s ( 2.36s elapsed) > > As I understand it from the documentation, the left time-column is the > CPU time, whereas the right one is elapses wall time. But how come that > the wall time is less than the CPU time? Isn't wall time = user's > perspective of time; so that is CPU time + IO + etc? > > Any help? > > --Wish. > _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
