From owner-freebsd-current@FreeBSD.ORG Thu Dec 14 15:50:00 2006 Return-Path: X-Original-To: freebsd-current@freebsd.org Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 9755816A412 for ; Thu, 14 Dec 2006 15:50:00 +0000 (UTC) (envelope-from rizzo@icir.org) Received: from xorpc.icir.org (xorpc.icir.org [192.150.187.68]) by mx1.FreeBSD.org (Postfix) with ESMTP id A7DF243CA7 for ; Thu, 14 Dec 2006 15:48:05 +0000 (GMT) (envelope-from rizzo@icir.org) Received: from xorpc.icir.org (localhost [127.0.0.1]) by xorpc.icir.org (8.12.11/8.13.6) with ESMTP id kBEFnTes047354; Thu, 14 Dec 2006 07:49:29 -0800 (PST) (envelope-from rizzo@xorpc.icir.org) Received: (from rizzo@localhost) by xorpc.icir.org (8.12.11/8.12.3/Submit) id kBEFnTW9047353; Thu, 14 Dec 2006 07:49:29 -0800 (PST) (envelope-from rizzo) Date: Thu, 14 Dec 2006 07:49:29 -0800 From: Luigi Rizzo To: Ivan Voras Message-ID: <20061214074929.B47100@xorpc.icir.org> References: <20061213192150.CF83D16A417@hub.freebsd.org> <200612131711.50921.mi+mx@aldan.algebra.com> <4580DFAB.3080601@FreeBSD.org> <200612140917.25523@aldan> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i In-Reply-To: ; from ivoras@fer.hr on Thu, Dec 14, 2006 at 04:35:41PM +0100 Cc: freebsd-current@freebsd.org Subject: Re: Let's use gcc-4.2, not 4.1 -- OpenMP X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Dec 2006 15:50:00 -0000 On Thu, Dec 14, 2006 at 04:35:41PM +0100, Ivan Voras wrote: > Mikhail Teterin wrote: > > > Although commercial compilers (like Intel's icc for Windows and Linux, or Sun > > Studio on Solaris, or Visual Studio on Windows) have supported OpenMP pragmas > > for a while (icc even allows parallelizing accross multiple machines), > > gcc-4.2 is the first release of GCC that supports it (with `-fopenmp' flag). > > > > I anticipate, "out-of-the-box" OpenMP support will soon be one of the > > required "check-boxes" for an OS to be considered for many things... > > For what it's worth: +1. It's going to be practically required even for > medium-performance applications as CPU clock rate stagnate and more > cores are grown. I've recently seen a 16-cpu x86 server in 1U! (granted, > 8 of those are hyperthreaded "CPUs" ;) ) and the other 8 are overheated CPUs ?