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Date: -- (:)
From: Jean Krivine <jean_krivine@h...>
Subject: Re: [Caml-list] memory usage
Great thanks!

J

On Wed, Jul 16, 2008 at 10:16 AM, Andres Varon <avaron@gmail.com> wrote:
>
> On Jul 15, 2008, at 3:38 PM, Jean Krivine wrote:
>
>> I'd be glad to try the patch if you could post it somewhere!
>
> I have posted it in:
>
> http://research.amnh.org/~avaron/ocaml/
>
> best,
>
> Andres
>>
>> J
>>
>> On Tue, Jul 15, 2008 at 3:31 PM, Andres Varon <avaron@gmail.com> wrote:
>>>
>>> Hello Jean,
>>>
>>> There is no 64-bit native OCaml compiler for Mac OS X intel.  I have a
>>> patch
>>> that works in Leopard, but did not compile opt.opt in Tiger, meaning that
>>> something is not OK,  so I did not offer it to the community. The
>>> bootstrap
>>> went fine, findlib and godi compiled OK too. I can post the patches
>>> somewhere if you want to give it a shot.
>>>
>>> My memory intensive application runs fine in Leopard with this compiler.
>>> But
>>> the binaries do not execute in Tiger (I found that other people had the
>>> same
>>> trouble copying a 64 bit apps from Leopard to Tiger and the other way
>>> around, but didn't look into it).
>>>
>>> If you want it ... I can post it, maybe someone can cleanup my job? All
>>> that
>>> would be needed after patching is:
>>>
>>> ./configure -host x86_64-apple-darwin -prefix /opt/ocaml/experimental
>>>
>>> (The prefix I always add for my ocaml-modified comilers).
>>>
>>> best,
>>>
>>> Andres
>>>
>>> On Jul 15, 2008, at 1:06 PM, Jean Krivine wrote:
>>>
>>>> Dear all
>>>>
>>>> I downloaded the last version of ocaml (3.10.2) but I must confess I
>>>> don't know what option I should pass to the compiler to make a binary
>>>> that uses 64 bits.
>>>> I tried naively ocamlopt -ccopt -arch -ccopt x86_64 but that doesn't
>>>> work. Any idea?
>>>>
>>>>
>>>>
>>>> On Fri, Jul 11, 2008 at 6:01 PM, Richard Jones <rich@annexia.org> wrote:
>>>>>
>>>>> On Fri, Jul 11, 2008 at 03:49:26PM -0400, Jean Krivine wrote:
>>>>>>
>>>>>> I am trying to run a stochastic simulator (written in ocaml) on a huge
>>>>>> data set and I have the following error message:
>>>>>
>>>>> I can confirm that OCaml works fine with huge datasets, on 64 bit
>>>>> platforms anyway.
>>>>>
>>>>>> sim(9595) malloc: *** mmap(size=1048576) failed (error code=12)
>>>>>> *** error: can't allocate region
>>>>>> *** set a breakpoint in malloc_error_break to debug
>>>>>> Fatal error: out of memory.
>>>>>>
>>>>>> My system:
>>>>>>
>>>>>> Mac Pro running OS X 10.5.4
>>>>>> Processor:  2 x 2.8 GHz Quad-Core Intel Xeon
>>>>>> Memory:  10 GB 800 MHz DDR2 FB-DIMM
>>>>>>
>>>>>> Does someone know what happened? Do you have any idea of any parameter
>>>>>> I could tune in order to avoid that?
>>>>>
>>>>> Is the compiler 32 bits or 64 bits on this machine?  Try doing:
>>>>>
>>>>> $ ocaml
>>>>> # Sys.word_size ;;
>>>>>
>>>>> It should print out either '32' or '64'.
>>>>>
>>>>> Also run your program under whatever the OS X equivalent of 'strace'
>>>>> is (ktrace?) to find out exactly why the mmap call fails.
>>>>>
>>>>> OCaml <= 3.10.2 on Linux suffers a nasty problem with its use of mmap
>>>>> and randomized address spaces
>>>>> (https://bugzilla.redhat.com/show_bug.cgi?id=445545#c9) but it doesn't
>>>>> seem like this is the same issue.
>>>>>
>>>>> Rich.
>>>>>
>>>>> --
>>>>> Richard Jones
>>>>> Red Hat
>>>>>
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>>>>
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>>>
>
>