[openib-general] Configuration of sdp

[Eitan Zahavi]

Hi Sean

Regarding libsdp.conf:

The simplest config that would catch all applications/ports and will NOT 
break your Eth based connections is:

log min-level 7 destination syslog
use both server * *:*
use both client * *:*

Not the level=7 on the "log" directive means that you will get a line in 
/var/log/messages for every listen/accept/connect
with info that should let you know if the connection was made through 
SDP or TCP.

Sean Hubbell wrote:
> 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
>>
>>
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>>     
>
>
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