From owner-freebsd-questions@FreeBSD.ORG Sat Jun 3 15:39:06 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 147E816A46F for ; Sat, 3 Jun 2006 15:39:06 +0000 (UTC) (envelope-from sgk@troutmask.apl.washington.edu) Received: from troutmask.apl.washington.edu (troutmask.apl.washington.edu [128.208.78.105]) by mx1.FreeBSD.org (Postfix) with ESMTP id AF29E43D49 for ; Sat, 3 Jun 2006 15:39:05 +0000 (GMT) (envelope-from sgk@troutmask.apl.washington.edu) Received: from troutmask.apl.washington.edu (localhost.apl.washington.edu [127.0.0.1]) by troutmask.apl.washington.edu (8.13.6/8.13.6) with ESMTP id k53Fclf5036297 for ; Sat, 3 Jun 2006 08:38:47 -0700 (PDT) (envelope-from sgk@troutmask.apl.washington.edu) Received: (from sgk@localhost) by troutmask.apl.washington.edu (8.13.6/8.13.6/Submit) id k53FclVj036296 for freebsd-questions@freebsd.org; Sat, 3 Jun 2006 08:38:47 -0700 (PDT) (envelope-from sgk) Date: Sat, 3 Jun 2006 08:38:47 -0700 From: Steve Kargl To: freebsd-questions@freebsd.org Message-ID: <20060603153847.GA36267@troutmask.apl.washington.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.4.2.1i Subject: Tuning GigE network for cluster computing? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 03 Jun 2006 15:39:06 -0000 First, I'm running FreeBSD 6.1-stable on a small cluster with 6 nodes that contain Tyan motheriboards. These broads have Broadcom GigE NICs that use the bge device. The cluster will be using MPI to possibly shove large data sets through a GigE switch, so I'm trying to determine how best to optimize the transfer. Would DEVICE_POLLING and/or jumbo frames likely methods for enhanced speeds? -- Steve