From mboxrd@z Thu Jan 1 00:00:00 1970 From: erik quanstrom Date: Thu, 7 Jul 2011 12:41:16 -0400 To: 9fans@9fans.net Message-ID: In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Subject: Re: [9fans] pcie for inter machine comms Topicbox-Message-UUID: fbf8bcc4-ead6-11e9-9d60-3106f5b1d025 > > Has anyone done up a driver for an infiniband interface? > > let's not go there. > > we looked at it in 2005 and the IB stack is so awful that it's not > something anyone wants to touch. It works on LInux, works on few other > systems, it's pretty much a headache. > > There's a reason that some Big Companies got out of IB. there are fewer infiniband-only chipsets out there than there used to be. most ib hardware is actually a "converged" network adapter, which means you can also do ethernet. it's interesting to do a line count on some of the linux drivers. they tend toward many tens of kloc. you just haven't lived till you've taken a peek at a 50kloc driver. it may be that a reasonable ethernet or tcp/ib driver could be written. - erik