<HTML dir=ltr><HEAD><TITLE>Re: [openib-general] Configuration of sdp</TITLE>
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<DIV dir=ltr><FONT face=Arial color=#000000 size=2>I have seen almost double performance with SDP as compared to IPoIB.</FONT></DIV>
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<DIV dir=ltr><FONT face=Arial size=2>Karun</FONT></DIV></DIV>
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<FONT face=Tahoma size=2><B>From:</B> Sean Hubbell [mailto:shubbell@dbresearch.net]<BR><B>Sent:</B> Wed 11/29/2006 5:22 PM<BR><B>To:</B> Karun Sharma<BR><B>Cc:</B> openib-general@openib.org<BR><B>Subject:</B> Re: [openib-general] Configuration of sdp<BR></FONT><BR></DIV>
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<P><FONT size=2>Yes, I tried that in our testing when I loaded the ib_sdp (I did just<BR>use the defaults). I was wondering if the numbers that we are seeing<BR>seem consistent with everyone elses... and at what point will the sdp<BR>module increase my bandwidth when using a legacy / third party network<BR>library?<BR><BR>Sean<BR><BR>Karun Sharma wrote:<BR>> Hi Sean:<BR>> <BR>> If you are using OFED 1.1 release, you will find a "README.txt" file<BR>> (/usr/local/ofed/ directory). In this file, configuration steps of SDP<BR>> are mentioned.<BR>> 1. modprobe ib_sdp<BR>> 2. export LD_PRELOAD=/usr/local/ofed/lib/libsdp.so<BR>> 3. export LIBSDP_CONFIG_FILE=/usr/local/ofed/etc/libsdp.conf<BR>> <application name>.<BR>> <BR>> You may need to modify libsdp.conf before step 3.<BR>> <BR>> Thanks<BR>> Karun<BR>> <BR>><BR>> ------------------------------------------------------------------------<BR>> *From:* openib-general-bounces@openib.org on behalf of Sean Hubbell<BR>> *Sent:* Tue 11/28/2006 10:34 PM<BR>> *To:* openib-general@openib.org<BR>> *Subject:* [openib-general] Configuration of sdp<BR>><BR>> Hello,<BR>><BR>> I have a question... we have tested our network on our cluster using<BR>> iperf v2.0.2.<BR>><BR>> Our first test was using Gig-E network and the results were 941 Mbps.<BR>> (i.e. iperf -c <ipaddress> and iperf -s)<BR>><BR>> Our second test was using Gig-E network and the results were 1.05 Mbps<BR>> using UDP.<BR>> (i.e. iperf -c <ipaddress> -u and iperf -s -u)<BR>><BR>> Our third test was using IBv4 network and the results was a max of 3.8<BR>> Mbps using TCP.<BR>> (i.e. iperf -c <ipaddress> -P[1-16] and iperf -s)<BR>><BR>> Loaded ib_sdp module and then tested:<BR>> Our fourth test was using IBv4 network and the results was a max of 4.16<BR>> Mbps using UDP.<BR>> (i.e. iperf -c <ipaddress> -b1000M -P[1-16] and iperf -s -u)<BR>><BR>> UNLOADED ib_sdp module and then tested:<BR>> Our fourth test was using IBv4 network and the results was a max of 4.16<BR>> Mbps using UDP.<BR>> (i.e. iperf -c <ipaddress> -b1000M -P[1-16] and iperf -s -u)<BR>><BR>> My question is what impact would it have on our network if configured<BR>> sdp and is there an example of how to configure sdp somewhere on the wiki?<BR>><BR>> Thanks,<BR>><BR>> Sean<BR>><BR>><BR>> _______________________________________________<BR>> openib-general mailing list<BR>> openib-general@openib.org<BR>> <A href="http://openib.org/mailman/listinfo/openib-general">http://openib.org/mailman/listinfo/openib-general</A><BR>><BR>> To unsubscribe, please visit<BR>> <A href="http://openib.org/mailman/listinfo/openib-general">http://openib.org/mailman/listinfo/openib-general</A><BR>><BR><BR></FONT></P></DIV></BODY></HTML>