[openib-general] Configuration of sdp

[Sean Hubbell]

Did you test this with iperf, so what like I did to see the double in 
performance or bandwidth?

Sean

Karun Sharma wrote:
> I have seen almost double performance with SDP as compared to IPoIB.
>  
> Karun
>
> ------------------------------------------------------------------------
> *From:* Sean Hubbell [mailto:shubbell at dbresearch.net]
> *Sent:* Wed 11/29/2006 5:22 PM
> *To:* Karun Sharma
> *Cc:* openib-general at openib.org
> *Subject:* Re: [openib-general] Configuration of sdp
>
> Yes, I tried that in our testing when I loaded the ib_sdp (I did just
> use the defaults). I was wondering if the numbers that we are seeing
> seem consistent with everyone elses... and at what point will the sdp
> module increase my bandwidth when using a legacy / third party network
> library?
>
> Sean
>
> Karun Sharma wrote:
> > Hi Sean:
> > 
> > If you are using OFED 1.1 release, you will find a "README.txt" file
> > (/usr/local/ofed/ directory). In this file, configuration steps of SDP
> > are mentioned.
> > 1. modprobe ib_sdp
> > 2. export LD_PRELOAD=/usr/local/ofed/lib/libsdp.so
> > 3. export LIBSDP_CONFIG_FILE=/usr/local/ofed/etc/libsdp.conf
> > <application name>.
> > 
> > You may need to modify libsdp.conf before step 3.
> > 
> > Thanks
> > Karun
> > 
> >
> > ------------------------------------------------------------------------
> > *From:* openib-general-bounces at openib.org on behalf of Sean Hubbell
> > *Sent:* Tue 11/28/2006 10:34 PM
> > *To:* openib-general at openib.org
> > *Subject:* [openib-general] Configuration of sdp
> >
> > Hello,
> >
> >   I have a question... we have tested our network on our cluster using
> > iperf v2.0.2.
> >
> > Our first test was using Gig-E network and the results were 941 Mbps.
> > (i.e. iperf -c <ipaddress> and iperf -s)
> >
> > Our second test was using Gig-E network and the results were 1.05 Mbps
> > using UDP.
> > (i.e. iperf -c <ipaddress> -u and iperf -s -u)
> >
> > Our third test was using IBv4 network and the results was a max of 3.8
> > Mbps using TCP.
> > (i.e. iperf -c <ipaddress> -P[1-16] and iperf -s)
> >
> > Loaded ib_sdp module and then tested:
> > Our fourth test was using IBv4 network and the results was a max of 4.16
> > Mbps using UDP.
> > (i.e. iperf -c <ipaddress> -b1000M -P[1-16] and iperf -s -u)
> >
> > UNLOADED ib_sdp module and then tested:
> > Our fourth test was using IBv4 network and the results was a max of 4.16
> > Mbps using UDP.
> > (i.e. iperf -c <ipaddress> -b1000M -P[1-16] and iperf -s -u)
> >
> > My question is what impact would it have on our network if configured
> > sdp and is there an example of how to configure sdp somewhere on the 
> wiki?
> >
> > Thanks,
> >
> > Sean
> >
> >
> > _______________________________________________
> > openib-general mailing list
> > openib-general at openib.org
> > http://openib.org/mailman/listinfo/openib-general
> >
> > To unsubscribe, please visit
> > http://openib.org/mailman/listinfo/openib-general
> >
>