My best guess is still that you're running out of memory in some way so that the OS is killing the process, while forcing a GC keeps peak memory just under some effective limit.
How much memory does running the program use (as reported by, e.g., top)? At Sat, 26 Feb 2011 00:00:01 -0500 (EST), Hari Prashanth wrote: > No its unlimited... > > ----- Original Message ----- > From: "Matthew Flatt" <mfl...@cs.utah.edu> > To: "Hari Prashanth" <krh...@ccs.neu.edu> > Cc: "PLT Developers" <d...@lists.racket-lang.org> > Sent: Friday, February 25, 2011 8:33:20 PM GMT -05:00 US/Canada Eastern > Subject: Re: [racket-dev] Can someone tell whats wrong with this? > > Do you have a `vmemoryuse' limit set? > > At Fri, 25 Feb 2011 19:29:17 -0500 (EST), Hari Prashanth wrote: > > The program is killed when the call to `collect' inside for loop is > > commented... I am using a fairly recent version of Racket... > > > > #lang racket/load > > > > (module RACKETSET racket/base > > > > (require (prefix-in rk: racket/set)) > > > > (define list1 (build-list 1000000 add1)) > > (define list2 (build-list 1000000 (λ (x) (+ x 1000000)))) > > > > (define set1 (apply rk:set list1)) > > (define set2 (apply rk:set list2)) > > > > (display "Racket sets\n") > > (define (collect) > > (collect-garbage) > > (collect-garbage) > > (collect-garbage)) > > > > (collect) > > (define sets > > (for ([i (in-range 10)]) > > (time (rk:set-union set1 set2)) > > #;(collect)))) > > > > swamiji@ubuntu:~/Desktop/krhari/TS$ raco make set-benchmark.rkt > > swamiji@ubuntu:~/Desktop/krhari/TS$ racket set-benchmark.rkt > > Racket sets > > cpu time: 5800 real time: 5810 gc time: 520 > > cpu time: 6670 real time: 7041 gc time: 1390 > > cpu time: 5890 real time: 10478 gc time: 620 > > Killed > > swamiji@ubuntu:~/Desktop/krhari/TS$ > > > > _________________________________________________ > > For list-related administrative tasks: > > http://lists.racket-lang.org/listinfo/dev _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
