<div dir="ltr">Was it black on yellow or red?<div> Robby</div></div><div class="gmail_extra"> <div class="gmail_quote">On Mon, Oct 7, 2013 at 10:32 AM, Neil Toronto <<a href="mailto:neil.toronto@gmail.com" target="_blank">neil.toronto@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I have a long-running random simulation that spits out debug messages. I extrapolated that it would take 20 hours to get 5,000,000 samples, and let it run for a day. Here's what I saw when I returned: Welcome to DrRacket, version 5.90.0.9--2013-10-04(876995d5/d) [3m]. Language: typed/racket [custom]; memory limit: 1024 MB. starting... sample-search-tree returned failure refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f i = 100 refinement-sample-point returned #f refinement-sample-point returned #f [...] refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f i = 2605500 refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f refinement-sample-point returned #f Interactions disabled | 560157:0 720.77MB Fear my ASCII art status bar. "720.77MB" is what I got after clicking the GC indicator. (Before, it was about 300MB.) There were no command-line messages from DrRacket. I don't think this is an out-of-memory problem. DrRacket has been good about asking for more during other simulations, my limit is set to 1024MB, and I really doubt I'm allocating a 304MB temporary object. I wrote a small program to print 600000 debug messages, thinking it was a limit on the number of lines in the REPL, and it ran to completion. For full disclosure: I paused and restarted DrRacket from the command line (fg; ctrl-z; bg) a few times while the simulation was running, so I could use my laptop unplugged without draining the battery. Besides running out of memory, what else could cause a program to halt with "Interactions disabled", and how can I avoid it? Neil ⊥ _________________________ Racket Developers list: <a href="http://lists.racket-lang.org/dev" target="_blank">http://lists.racket-lang.org/dev</a> </blockquote></div> </div>