From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 674B4E95A8E for ; Mon, 9 Oct 2023 10:30:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345764AbjJIKaD (ORCPT ); Mon, 9 Oct 2023 06:30:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42492 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345759AbjJIKaB (ORCPT ); Mon, 9 Oct 2023 06:30:01 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DAC55D6 for ; Mon, 9 Oct 2023 03:29:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=sJEtCfIFnov/stsABCAdFZMChSbaTsEubRk0VjEl124=; b=UDPS/+fuIVNJf9C8lwCiAlTKCs 9M3IGQlsGdcehCpl6hdKpVDAc4yRC1JSnNTNPYvTwdSBbOQFf0hukExuu0Gnfjab415zWznJDu5zE h91eWQg+StJEvqmmv8ulQ0VRu1VoM93eMhxBq4khB+sE2iMaCjtdVkKEPDwCN/lxlw7Qq86w/mqDZ tDCTsjgQQzW+jr/pxIfm1XmcvajSytY5gSPIi8aaANR8sGsAOanSRZEbo6E5xRD7KAh0WSIGByrJY m7W9I1RIVIhnRLAbgXsXF4Wx9S/EB3KsLHzPRjfcNJ0WDDfGrhKeb1BIfcA+ruI1JOBrRPx/yG3hP jC67bAwg==; Received: from j130084.upc-j.chello.nl ([24.132.130.84] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1qpnWH-00FJ2O-Fg; Mon, 09 Oct 2023 10:29:49 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id 2BEE3300365; Mon, 9 Oct 2023 12:29:49 +0200 (CEST) Date: Mon, 9 Oct 2023 12:29:49 +0200 From: Peter Zijlstra To: Julia Lawall Cc: Ingo Molnar , Vincent Guittot , Dietmar Eggemann , Mel Gorman , linux-kernel@vger.kernel.org Subject: Re: EEVDF and NUMA balancing Message-ID: <20231009102949.GC14330@noisy.programming.kicks-ass.net> References: <20231003215159.GJ1539@noisy.programming.kicks-ass.net> <20231004120544.GA6307@noisy.programming.kicks-ass.net> <20231004174801.GE19999@noisy.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Oct 04, 2023 at 08:04:34PM +0200, Julia Lawall wrote: > > I'll go build the benchmark thing tomorrow, if I can figure out how that > > works, this NAS stuff looked 'special'. Nothing simple like ./configure; > > make -j$lots :/ > > Starting from git clone, I had to do: > > cd NPB3.4-OMP > mkdir bin > cd config > cp make.def.template make.def > cd .. > make ua CLASS=C > > You also need gfortran to be installed. W00t, that worked like a charm. The sad new is that I can't seem to reproduce the issue: So my (freshly re-installed with debian testing) 4 socket Intel(R) Xeon(R) CPU E7-8890 v3 machine gives me: root@hsw-ex:/usr/local/src/nas-parallel-benchmarks/NPB3.4-OMP/bin# uname -a Linux hsw-ex 6.6.0-rc4+ #2 SMP PREEMPT_DYNAMIC Mon Oct 9 11:14:21 CEST 2023 x86_64 GNU/Linux root@hsw-ex:/usr/local/src/nas-parallel-benchmarks/NPB3.4-OMP/bin# cat /proc/sys/kernel/numa_balancing 1 root@hsw-ex:/usr/local/src/nas-parallel-benchmarks/NPB3.4-OMP/bin# ./ua.C.x | grep "Time in seconds" Time in seconds = 26.69 root@hsw-ex:/usr/local/src/nas-parallel-benchmarks/NPB3.4-OMP/bin# ./ua.C.x | grep "Time in seconds" Time in seconds = 26.31 root@hsw-ex:/usr/local/src/nas-parallel-benchmarks/NPB3.4-OMP/bin# ./ua.C.x | grep "Time in seconds" Time in seconds = 25.43 And this is using a .config very near what Debian ships for 6.5 (make olddefconfig -CONFIG_DEBUG_INFO_BTF) I'll try again in a little bit, perhaps I'm suffering PEBKAC :-)