From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752385Ab0IOIRE (ORCPT ); Wed, 15 Sep 2010 04:17:04 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:55116 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751703Ab0IOIRB (ORCPT ); Wed, 15 Sep 2010 04:17:01 -0400 Date: Wed, 15 Sep 2010 10:16:53 +0200 From: Ingo Molnar To: Christopher Yeoh Cc: linux-kernel@vger.kernel.org, Andrew Morton , Linus Torvalds , Peter Zijlstra , linux-mm@kvack.org Subject: Re: [RFC][PATCH] Cross Memory Attach Message-ID: <20100915081653.GA16406@elte.hu> References: <20100915104855.41de3ebf@lilo> <20100915080235.GA13152@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100915080235.GA13152@elte.hu> User-Agent: Mutt/1.5.20 (2009-08-17) X-ELTE-SpamScore: -2.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.5 -2.0 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > > NPB: > > ==== > > BT - 12% improvement > > FT - 15% improvement > > IS - 30% improvement > > SP - 34% improvement > > > > IMB: > > === > > > > Ping Pong - ~30% improvement > > Ping Ping - ~120% improvement > > SendRecv - ~100% improvement > > Exchange - ~150% improvement > > Gather(v) - ~20% improvement > > Scatter(v) - ~20% improvement > > AlltoAll(v) - 30-50% improvement btw., how does OpenMPI signal the target tasks that something happened to their address space - is there some pipe/socket side-channel, or perhaps purely based on flags in the modified memory areas, which are polled? Ingo From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail143.messagelabs.com (mail143.messagelabs.com [216.82.254.35]) by kanga.kvack.org (Postfix) with ESMTP id 83B1A6B007B for ; Wed, 15 Sep 2010 04:17:01 -0400 (EDT) Date: Wed, 15 Sep 2010 10:16:53 +0200 From: Ingo Molnar Subject: Re: [RFC][PATCH] Cross Memory Attach Message-ID: <20100915081653.GA16406@elte.hu> References: <20100915104855.41de3ebf@lilo> <20100915080235.GA13152@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100915080235.GA13152@elte.hu> Sender: owner-linux-mm@kvack.org To: Christopher Yeoh Cc: linux-kernel@vger.kernel.org, Andrew Morton , Linus Torvalds , Peter Zijlstra , linux-mm@kvack.org List-ID: > > NPB: > > ==== > > BT - 12% improvement > > FT - 15% improvement > > IS - 30% improvement > > SP - 34% improvement > > > > IMB: > > === > > > > Ping Pong - ~30% improvement > > Ping Ping - ~120% improvement > > SendRecv - ~100% improvement > > Exchange - ~150% improvement > > Gather(v) - ~20% improvement > > Scatter(v) - ~20% improvement > > AlltoAll(v) - 30-50% improvement btw., how does OpenMPI signal the target tasks that something happened to their address space - is there some pipe/socket side-channel, or perhaps purely based on flags in the modified memory areas, which are polled? Ingo -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org