Re: sdp and port 0

[Stijn De Weirdt <stijn.deweirdt-Cru1EgDzd7c@public.gmane.org>]

hi andrea,

> I would like to integrate Amir's information about an old discussion.
> In April I have tested SDP with Neteffect cards with OFED 1.5.1 and OFED
> 1.5.2 without success. I have open two bug on Bugzilla (number 2027 and
> 2028 --> LINK:https://bugs.openfabrics.org/).
> The first is closed thanks to Amir. 
> On the second one, Steve will work in July.
> 
> Stijn, you can find our old discussion about SDP under the subject-title
> "Socket Direct Protocol: help(2)" and "BUG 2027 / 2028" (something like
> that).
> I have also posted some information on the blog link below:
> 
> http://nixcraft.com/linux-software/14686-socket-direct-protocol-netperf.html#post25324
> 
> I don't know if those information help you, but I think it's important
> read and understand more about SDP.
> 
i read the thread and both bug reports, but at first sight i seems
unrelated. the hardware i'm trying it on is IB DDR ConnectX (mlx4)

> Can I ask you why do you use SDP in your activity?
we have some legacy binary-only code that we are trying to speedup. it
uses TCP to exchange large amounts of data between processes, so we are
trying sdp if it can help with this.

thanks a lot,

stijn
> 
> Thanks again to Amir.
> Regards,
> Andrea
> 
> Andrea Gozzelino
> 
> INFN - Laboratori Nazionali di Legnaro	(LNL)
> Viale dell'Universita' 2
> I-35020 - Legnaro (PD)- ITALIA
> Tel: +39 049 8068346
> Fax: +39 049 641925
> Mail: andrea.gozzelino-PK20h7lG/Rc1GQ1Ptb7lUw@public.gmane.org	
> 
> 
> 
> On May 25, 2010 10:34 AM, Amir Vadai <amirv-VPRAkNaXOzVS1MOuV/RT9w@public.gmane.org> wrote:
> 
> > Stijn Hi,
> > 
> > Listening to port 0 is supported and should work.
> > Which OFED version do you use (issue ofed_info to know)?
> > 
> > Does it work for you on a simple test application that only listen on
> > a socket?
> > 
> > - Amir
> > 
> > 
> > On 05/18/2010 01:20 PM, Stijn De Weirdt wrote:
> > > hi all,
> > >
> > > (i'm not on the list, please keep me in cc)
> > >
> > > i am trying SDP with some executable (i don't have the source), but
> > > i'm
> > > getting errors with the bind step (output from strace):
> > >
> > > bind(20, {sa_family=AF_INET, sin_port=htons(0),
> > > sin_addr=inet_addr("1.2.3.4")}, 16) = -1 EADDRINUSE (Address already
> > > in
> > > use)
> > >
> > > is it possible that a bind to port 0 (ie ask system for free port)
> > > is
> > > not supported with libsdp?
> > >
> > > using 'both' as addressfamily in the configfile instead of 'sdp'
> > > works
> > > but the tcp is used.
> > > i also tried to add a portrange to avoid port 0 with sdp (ie tcp for
> > > port 0, sdp for the rest), but this doesn't work either (which is
> > > not
> > > that surprising).
> > >
> > >
> > > thanks a lot,
> > >
> > > stijn
> > >   
> > 
> > --
> > 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
> > 
> 
> 
> 		
> 

-- 
http://hasthelhcdestroyedtheearth.com/


--
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