I took Matthias's test, compiled it from DrRacket "create executable" option and ran it on my machine: Inspiron 1525 3Gbyte dual core about 6 years old.
#lang racket (define l (time (build-list (* 4091 5023) (λ (x) 1)))) (system "PAUSE") WORKS #lang racket (define l (time (build-list (* 7091 5023) (λ (x) 1)))) (system "PAUSE") ABORTS with Racket Virtual Machine run out of memory Thanks, Harry On Fri, Jul 20, 2012 at 9:51 AM, Matthias Felleisen <matth...@ccs.neu.edu> wrote: > > On Jul 20, 2012, at 9:38 AM, Harry Spier wrote: > >> Dear list members, >> >> As part of my application I create a list of lists of 1's and 0's >> from an image file. >> When the size of the list of lists is: 1055 x 1066 it works fine, >> but when the size of the list of lists is: 4091 x 5023 then the >> program aborts with the error message: >> Racket Virtual Machine run out of memory: Aborting >> >> I've narrowed the error down to where I create the l create the list. >> I.e. the error occurs during creation of the list and not during use >> of the list. >> I compiled the program with no debugging information using the >> DrRacket "create executable" option and then ran the executable. >> >> Any suggestions of what I can do to get around this? >> >> Thanks, >> Harry Spier >> ____________________ >> Racket Users list: >> http://lists.racket-lang.org/users > > I just ran the below inside of DrRacket on a 2-year old MacMini: > > Welcome to DrRacket, version 5.3.0.16--2012-07-18(b111241a/d) [3m]. > Language: racket. >> (define l (time (build-list (* 4091 5023) (λ (x) 1)))) > cpu time: 19862 real time: 163710 gc time: 12883 >> (length l) > 20549093 >> (* 4091 5023) > 20549093 > > > So creating this list takes a while in DrRacket with the standard > configuration but traversing it is lighting fast, as you'd expect. Is it > possible that you have set a memory limit or that you are creating other > large data structures that consume space? The list is large but not that > large. > > -- Matthias > ____________________ Racket Users list: http://lists.racket-lang.org/users
