[racket-dev] What can cause "Interactions disabled"?

Black on yellow.

On 10/07/2013 09:50 AM, Robby Findler wrote:
> Was it black on yellow or red?
>
> Robby
>
>
> On Mon, Oct 7, 2013 at 10:32 AM, Neil Toronto <neil.toronto at gmail.com
> <mailto:neil.toronto at gmail.com>> wrote:
>
>     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 ⊥
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>
>