Increased memory usage with GHC 7.10.1

[Paolino]

here is another file , which is small, which cannot be compiled within 4GB
memory.

https://raw.githubusercontent.com/benl23x5/gloss/master/gloss-examples/raster/Fluid/src-repa/Stage/Linear.hs


I'd just want to add that this problem is a nasty one if one doesn't set
the max heap: a remote machine frozen that must be rebooted is not a nice
adventure , hoping the crash remains confined to the vm.

hth, paolino



2015-05-01 15:31 GMT+02:00 George Colpitts <george.colpitts at gmail.com>:

> Should we recommend that all library developers compile their libraries
> with a max heap of 4G (to pick an arbitrary number) so that we can catch
> some of these issues earlier?
>
> On Fri, May 1, 2015 at 5:42 AM, Paolino <paolo.veronelli at gmail.com> wrote:
>
>> Hello, I'm using ghc 7.10.1 to compile OpenGLRaw which is now impossible
>> with -O1 and -O2 due to "ghc : out of memory error" on a 4GB linux host.
>> The file making memory explode is
>> Graphics.Rendering.OpenGL.Raw.Functions
>> <https://hackage.haskell.org/package/OpenGLRaw-2.4.1.0/docs/src/Graphics-Rendering-OpenGL-Raw-Functions.html>.
>> With -O0 it uses 600 MB.
>>
>> The file is really huge, but I could compile it with prior versions of
>> ghc.
>>
>> Regards
>>
>> paolino
>>
>> 2015-04-17 1:33 GMT+02:00 David Laing <dave.laing.80 at gmail.com>:
>>
>>> Hi all,
>>>
>>> I've been playing around with profiling GHC recently, so I thought I'd
>>> chime in with a pointer that might save people searching for the right docs
>>> - you could configure a cabal sandbox to work with multiple version of ghc,
>>> which I've found useful:
>>>
>>>
>>> https://www.haskell.org/cabal/users-guide/installing-packages.html#sandboxes-advanced-usage
>>>
>>> Cheers,
>>>
>>> Dave
>>>
>>> On Fri, Apr 17, 2015 at 6:01 AM, Michal Terepeta <
>>> michal.terepeta at gmail.com> wrote:
>>>
>>>> Hi Richard,
>>>>
>>>> Thanks updating the ticket! What I did was: build GHC HEAD/7.8.4 with
>>>> build flavor 'prof' then get the haskell-src-exts sources, install the
>>>> dependencies and finally add +RTS -p -RTS to the cabal file and compile it,
>>>> the resulting ghc.prof contains the profiling information.
>>>>
>>>> For anyone interested about CallArity slowness, the problem is tracked
>>>> in https://ghc.haskell.org/trac/ghc/ticket/10293
>>>>
>>>> Cheers,
>>>> Michal
>>>>
>>>> On Wed, Apr 15, 2015 at 1:40 AM Richard Eisenberg <eir at cis.upenn.edu>
>>>> wrote:
>>>>
>>>>> I've pasted Michal's numbers in #9630, which seems like a good place
>>>>> to track this. Michal, would you mind fleshing out a bit precisely what you
>>>>> did to get those numbers? That would be helpful (though you've already been
>>>>> very helpful indeed in getting the data together)!
>>>>>
>>>>> Thanks,
>>>>> Richard
>>>>>
>>>>> On Apr 14, 2015, at 9:09 PM, Joachim Breitner <
>>>>> mail at joachim-breitner.de> wrote:
>>>>>
>>>>> > Hi,
>>>>> >
>>>>> > Am Dienstag, den 14.04.2015, 21:54 +0200 schrieb Michal Terepeta:
>>>>> >> On Mon, Apr 13, 2015 at 10:34 PM, Christiaan Baaij
>>>>> >> <christiaan.baaij at gmail.com> wrote:
>>>>> >>> Actually, I meant only with -fno-specialise.
>>>>> >>
>>>>> >> Done. Helps quite a bit but CallArity is still a pretty expensive.
>>>>> >
>>>>> > I’m on that, and I think I have a quite neat fix for it. I’ll report
>>>>> on
>>>>> > that in the trac ticket:
>>>>> > https://ghc.haskell.org/trac/ghc/ticket/10293#comment:4
>>>>> >
>>>>> > Greetings,
>>>>> > Joachim
>>>>> >
>>>>> > --
>>>>> > Joachim “nomeata” Breitner
>>>>> >  mail at joachim-breitner.de • http://www.joachim-breitner.de/
>>>>> >  Jabber: nomeata at joachim-breitner.de  • GPG-Key: 0xF0FBF51F
>>>>> >  Debian Developer: nomeata at debian.org
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