From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jason Gunthorpe Subject: Re: [PATCH 1/2] rdma/cm: support option to allow manually setting IB path Date: Mon, 5 Oct 2009 11:56:56 -0600 Message-ID: <20091005175656.GK5191@obsidianresearch.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Sean Hefty Cc: linux-rdma , Roland Dreier List-Id: linux-rdma@vger.kernel.org On Mon, Oct 05, 2009 at 10:43:44AM -0700, Sean Hefty wrote: > Export rdma_set_ib_paths to user space to allow applications to > manually set the IB path used for connections. This allows > alternative ways for a user space application or library to obtain > path record information, including retrieving path information > from cached data, avoiding direct interaction with the IB SA. > The IB SA is a single, centralized entity that can limit scaling > on large clusters running MPI applications. Um, isn't this kind of low level control exactly why we have the IB CM? Jason -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html