Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261606AbVEPNGr (ORCPT ); Mon, 16 May 2005 09:06:47 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261609AbVEPNGq (ORCPT ); Mon, 16 May 2005 09:06:46 -0400 Received: from [80.247.74.3] ([80.247.74.3]:26548 "EHLO tavolara.isolaweb.it") by vger.kernel.org with ESMTP id S261606AbVEPNGd (ORCPT ); Mon, 16 May 2005 09:06:33 -0400 Message-Id: <6.2.1.2.2.20050516150603.06683eb0@mail.tekno-soft.it> X-Mailer: QUALCOMM Windows Eudora Version 6.2.1.2 Date: Mon, 16 May 2005 15:06:25 +0200 To: li nux From: Roberto Fichera Subject: Re: How to use memory over 4GB Cc: linux-kernel@vger.kernel.org In-Reply-To: <20050516125526.82482.qmail@web60512.mail.yahoo.com> References: <20050516125526.82482.qmail@web60512.mail.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed X-IsolaWeb-MailScanner-Information: Please contact the ISP for more information X-IsolaWeb-MailScanner: Found to be clean X-MailScanner-From: kernel@tekno-soft.it Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2154 Lines: 70 At 14.55 16/05/2005, li nux wrote: >I guess u r on 32-bit platform. >Then, u need to enable PAE ( if not enabled alredy) >and rebuild the kernel. >This will be transparent to the user space. >Ur word size will still be 32-bit, only thing is PAE >will change the way u translate the address by adding >one more level of indexing to the page table. Yes! It's already PAE enabled. >-lnxluv. > >--- Roberto Fichera wrote: > > Hi All, > > > > I've a dual Xeon 3.2GHz HT with 8GB of memory > > running kernel 2.6.11. > > I whould like to know the way how to use all the > > memory in a single > > process, the application is a big simulation which > > needs big memory chuncks. > > I have readed about hugetlbfs, shmfs and tmpfs, but > > don't understand how I > > can access > > the whole memory. Ok! I can create a big file on > > tmpfs using shm_open() and > > than map it by using mmap() or mmap2() but how can I > > access over 4GB using > > standard pointers (if I had to use it)? > > > > So, please send me some url, documents etc and/or > > piece > > of source code that shows how to do it in user > > space. > > > > Thanks _very much_ in advance, > > > > Roberto Fichera. > > > > - > > To unsubscribe from this list: send the line > > "unsubscribe linux-kernel" in > > the body of a message to majordomo@vger.kernel.org > > More majordomo info at > > http://vger.kernel.org/majordomo-info.html > > Please read the FAQ at http://www.tux.org/lkml/ > > > > > >__________________________________ >Yahoo! Mail Mobile >Take Yahoo! Mail with you! Check email on your mobile phone. >http://mobile.yahoo.com/learn/mail >- >To unsubscribe from this list: send the line "unsubscribe linux-kernel" in >the body of a message to majordomo@vger.kernel.org >More majordomo info at http://vger.kernel.org/majordomo-info.html >Please read the FAQ at http://www.tux.org/lkml/ Roberto Fichera. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/