Received: from maia.hub.org (maia-3.hub.org [200.46.204.243]) by mail.postgresql.org (Postfix) with ESMTP id 07AE5B5DBC3 for ; Thu, 9 Jun 2011 07:47:21 -0300 (ADT) Received: from mail.postgresql.org ([200.46.204.86]) by maia.hub.org (mx1.hub.org [200.46.204.243]) (amavisd-maia, port 10024) with ESMTP id 82921-07 for ; Thu, 9 Jun 2011 10:47:13 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from mail.erwied.eu (mail.erwied.eu [85.214.80.157]) by mail.postgresql.org (Postfix) with ESMTP id 363DCB5DBE4 for ; Thu, 9 Jun 2011 07:47:13 -0300 (ADT) Received: from dslb-094-221-191-216.pools.arcor-ip.net ([94.221.191.216] helo=erwied.dns2go.com ident=mail) by mail.erwied.eu with esmtpsa (Exim 4.76#1) id 1QUclb-0001zJ-8J ; Thu, 09 Jun 2011 12:47:11 +0200 Received: from proxy.mbs-software.info ([87.234.32.189] helo=localhost) by erwied.dns2go.com with esmtpsa (Exim 4.76#1) id 1QUclY-00084M-Sn ; Thu, 09 Jun 2011 12:47:09 +0200 Date: Thu, 9 Jun 2011 12:46:57 +0200 From: Jochen Erwied Organization: Creative Chaos Computing X-Priority: 3 (Normal) Message-ID: <396429919.20110609124657@erwied.eu> To: muthu krishnan CC: pgsql-performance@postgresql.org, pgsql-performance@postgresql.org Subject: Re: Postgresql on itanium server In-Reply-To: References: <16710651848.20110609113019@erwied.eu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=-1.91 tagged_above=-10 required=5 tests=BAYES_00=-1.9, T_RP_MATCHES_RCVD=-0.01 X-Spam-Level: X-Archive-Number: 201106/97 X-Sequence-Number: 44030 Thursday, June 9, 2011, 12:03:12 PM you wrote: > Is there any option to turn on "flush to zero mode" in itanium cpu while > compiling postgresql from source? configure will complain when specifying './configure CFLAGS=-ffast-math'. make won't, so a 'make CFLAGS='-O2 -Wall -ffast-math' after doing a normal './configure' should do the trick. But maybe one of the experts should explain if this will in fact work... -- Jochen Erwied | home: jochen@erwied.eu +49-208-38800-18, FAX: -19 Sauerbruchstr. 17 | work: joe@mbs-software.de +49-2151-7294-24, FAX: -50 D-45470 Muelheim | mobile: jochen.erwied@vodafone.de +49-173-5404164