[plt-scheme] Typed-Scheme Memory Issues

On Wed, Apr 8, 2009 at 1:18 PM, Robby Findler
<robby at eecs.northwestern.edu> wrote:
> Is profiling turned on? (or maybe try disabling debugging?)
>

You're right... debugging was enabled. Without debugging the
performance is similar as mzc compilation. But with debugging on, my
PC just goes nuts. Since I started working on this I had to increase
my swap from 512Mb to 4.5Gb because my machine would just stop after
DrScheme consumed all of the 2Gb of memory and the 512Mb of swap...

> Robby
>
> On Wednesday, April 8, 2009, Carl Eastlund <carl.eastlund at gmail.com> wrote:
>> On Wed, Apr 8, 2009 at 5:25 AM, Paulo J. Matos <pocmatos at gmail.com> wrote:
>>> On Wed, Apr 8, 2009 at 6:26 AM, Matthias Felleisen <matthias at ccs.neu.edu> wrote:
>>>>
>>>> It might still be worth examining why TS uses so much memory.
>>>> Type checking should be linear in space in the source code,
>>>> though I suspect that this is not quite true when you use
>>>> unions and other commutative/associative things that require
>>>> extra work. But, type checking 3000 lines of code should
>>>> never use 2GB. -- Matthias
>>>
>>> It seems it doesn't take that much space (if you use mzc)...
>>> I guess there's something wrong between typed-scheme and drscheme.
>>> Let me know what kind of debug I can provide to aid in your search for
>>> a problem [I have no problems in sending you the files I am working
>>> on, if you wish].
>>
>> Paulo,
>>
>> Have you tried writing untyped versions of the modules and
>> compiling/running those?  That would be a quick way to see whether
>> Typed Scheme is involved in this issue or not.  It could always be
>> some other artifact of your code causing the blow-up in space and
>> time.
>>
>> --Carl
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>



-- 
Paulo Jorge Matos - pocmatos at gmail.com
Webpage: http://www.personal.soton.ac.uk/pocm