From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on yquem.inria.fr X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=AWL,HTML_MESSAGE autolearn=disabled version=3.1.3 Received: from mail1-relais-roc.national.inria.fr (mail1-relais-roc.national.inria.fr [192.134.164.82]) by yquem.inria.fr (Postfix) with ESMTP id 9BB40BBCA for ; Wed, 7 May 2008 21:29:30 +0200 (CEST) X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AjYCABagIUjAXQIniGdsb2JhbACCNzQoiyCDTwEBAQ8gm0o X-IronPort-AV: E=Sophos;i="4.27,450,1204498800"; d="scan'208,217";a="11967984" Received: from concorde.inria.fr ([192.93.2.39]) by mail1-smtp-roc.national.inria.fr with ESMTP; 07 May 2008 21:29:30 +0200 Received: from mail3-relais-sop.national.inria.fr (mail3-relais-sop.national.inria.fr [192.134.164.104]) by concorde.inria.fr (8.13.6/8.13.6) with ESMTP id m47JTTrm002213 (version=TLSv1/SSLv3 cipher=RC4-SHA bits=128 verify=OK) for ; Wed, 7 May 2008 21:29:30 +0200 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Aq0AANufIUhCm3xro2dsb2JhbACCNzQoiyCDTwEBAQEBAQcFCAcRm0c X-IronPort-AV: E=Sophos;i="4.27,450,1204498800"; d="scan'208,217";a="12362627" Received: from www.janestcapital.com (HELO smtp.janestcapital.com) ([66.155.124.107]) by mail3-smtp-sop.national.inria.fr with ESMTP; 07 May 2008 21:29:28 +0200 Received: from [172.25.129.161] [38.105.200.250] by janestcapital.com with ESMTP (SMTPD-9.10) id A31603C4; Wed, 07 May 2008 15:29:26 -0400 Message-ID: <48220316.7070000@janestcapital.com> Date: Wed, 07 May 2008 15:29:26 -0400 From: Brian Hurt User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.2) Gecko/20040804 Netscape/7.2 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Markus Mottl Cc: Richard Jones , caml-list@inria.fr Subject: Re: [Caml-list] ocamlc.opt tries to allocate 34 GB of RAM ... and fails References: <20080507170149.GA21077@annexia.org> <04bfd9a7e0fb697f30fc7376d28b8fa5@localhost> <20080507183424.GA24624@annexia.org> <20080507184957.GA25416@annexia.org> In-Reply-To: Content-Type: multipart/alternative; boundary="------------040705090000010707070001" X-Miltered: at concorde with ID 48220319.000 by Joe's j-chkmail (http://j-chkmail . ensmp . fr)! X-Spam: no; 0.00; ocamlc:01 markus:01 mottl:01 ocamlc:01 markus:01 ocaml:01 mottl:01 ocaml:01 wrote:01 wrote:01 heap:01 heap:01 caml-list:01 overly:02 overly:02 This is a multi-part message in MIME format. --------------040705090000010707070001 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Markus Mottl wrote: >On Wed, May 7, 2008 at 2:49 PM, Richard Jones wrote: > > >> OK, but is there any case where ocamlc.opt should try to allocate >> 34 _gigabytes_ (in the 2nd [length] param of mmap(2)). >> >> > >Hm, this seems overly excessive. I haven't been able to reproduce the >problem on our Fedora 5 boxes (32 and 64bit) using any (including >older) OCaml-compiler. > >Regards, >Markus > > > This is possible- if the ocaml heap was spread out over 2^48 bytes, then the old implementation would want to allocate 32G or more. I'd be surprised, but this is possible... Brian --------------040705090000010707070001 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit Markus Mottl wrote:

On Wed, May 7, 2008 at 2:49 PM, Richard Jones <rich@annexia.org> wrote:

 OK, but is there any case where ocamlc.opt should try to allocate
 34 _gigabytes_ (in the 2nd [length] param of mmap(2)).


Hm, this seems overly excessive.  I haven't been able to reproduce the
problem on our Fedora 5 boxes (32 and 64bit) using any (including
older) OCaml-compiler.

Regards,
Markus

This is possible- if the ocaml heap was spread out over 2^48 bytes, then the old implementation would want to allocate 32G or more. I'd be surprised, but this is possible...

Brian

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