X-Spam-Check-By: sourceware.org Date: Thu, 30 Mar 2006 14:18:02 +0200 From: Corinna Vinschen To: cygwin@cygwin.com Subject: Re: segfault on memory intensive programs Message-ID: <20060330121802.GG20907@calimero.vinschen.de> Reply-To: cygwin@cygwin.com Mail-Followup-To: cygwin@cygwin.com References: <20060330110801.GA18039@calimero.vinschen.de> <063d01c653eb$0f2ee7b0$a501a8c0@CAM.ARTIMI.COM> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <063d01c653eb$0f2ee7b0$a501a8c0@CAM.ARTIMI.COM> User-Agent: Mutt/1.4.2i Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com On Mar 30 12:14, Dave Korn wrote: > On 30 March 2006 12:08, Corinna Vinschen wrote: > > > >>> #define N 600 // Matrix rank > >>> // We multiply m1 and m2, and put the result in m3. > >>> int m1[N][N]; > >>> int m2[N][N]; > >>> int m3[N][N]; > > > No wonder. 600**3 * sizeof (int) * 3 == 2592000000 ~= 2.4 Gigs. > > Those matrices are only 2d! Oh, hmm. 600**2 * sizeof (int) * 3 == 4320000 = 4.1 Megs. Maybe reserving a stack bigger than 4Megs would help, though? Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Project Co-Leader cygwin AT cygwin DOT com Red Hat -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/