[ewg] Status of SDP? (and ib_sdp patch for Linux-3.4.x)

[richard Croucher]

What's makes SDP so useful and why is will be sorely missed is that it
does not require users to refactor existing TCP socket code, or even be
in possession of the source code for that matter.   Simply preloading
libsdp is all need to do to convert that old, cranky tcp program to run
(almost) native over InfiniBand.  

SDP is used as a wire protocol rather than a API.  There are several
contending API's out there, including Bob Russell's Extended Socket API
which could be candidates, but I would like to see the concept of the
preload preserved. It's been a powerful factor in getting InfiniBand
adoption.
-- 

Richard Croucher
www.informatix-sol.com
+44-7802-213901 

On Mon, 2012-04-23 at 13:29 +0200, Benjamin Thery wrote:

> Thanks for the info.
> I'll have a look at rsockets.
> 
> On Fri, Apr 20, 2012 at 22:20, Woodruff, Robert J
> <robert.j.woodruff at intel.com> wrote:
> > Ben wrote,
> >>Oh.
> >>Is there another ULP that replaces it? Offer the same feat.?
> >
> >
> > Sean is working on an alternative socket-like API called rsockets
> > that you might be interested in. It is completely user-space library
> > and does not have any Microsoft IP issues. This may be an acceptable
> > alternative to SDP for some applications.
> >
> > woody
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