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ocamlc.opt tries to allocate 34 GB of RAM ... and fails

Richard Jones
- Romain Beauxis
  - Richard Jones
    - Markus Mottl
      - Richard Jones
        
        Markus Mottl
        
        Brian Hurt
        
        Richard Jones
        
        Richard Jones
        
        Markus Mottl
        
        Richard Jones

Date:	-- (:)
From:	Markus Mottl <markus.mottl@g...>
Subject:	Re: [Caml-list] ocamlc.opt tries to allocate 34 GB of RAM ... and fails

On Wed, May 7, 2008 at 2:34 PM, Richard Jones <rich@annexia.org> wrote:
>  Also I checked the source to our caml_aligned_mmap function and it is
>  essentially the same as Markus Mottl's version in his comment in that
>  thread (this has been reported in 3.10.1 & 3.10.2).  It even includes
>  a reference to that bug, indicating that the version we are using
>  includes this patch.

Note that the patch does not guarantee anything.  The mmap system call
only considers the passed address as a hint, there is no guarantee
that it will actually use it.  This may be highly kernel-dependent.

Note, too, that the upcoming OCaml-release will (probably) feature
improved page table handling using sparse representations, thus
solving this problem generally.

Regards,
Markus

-- 
Markus Mottl http://www.ocaml.info markus.mottl@gmail.com