[openib-general] IPoIB Question

[Scott Weitzenkamp (sweitzen)]

If you are using TCP, you can use SDP transparently via libsdp to get
improved latency and throughput.

Scott 

> -----Original Message-----
> From: Sean Hubbell [mailto:shubbell at dbresearch.net] 
> Sent: Monday, October 23, 2006 8:56 AM
> To: Scott Weitzenkamp (sweitzen)
> Cc: openib-general at openib.org
> Subject: Re: [openib-general] IPoIB Question
> 
> We currently have a non-homogeneous cluster so that seems that would 
> possible explain a few of the differences that I have seen on 
> some of my 
> tests. I will look at netperf.org and see what they have to offer.
> 
>   On another note, is there plans to have IPoIB support the full 
> throughput that infiniband 4x or 12x has? Specifically, can I keep my 
> legacy apps and just upgrade the network to take advantage of 
> the bandwidth?
> 
> Sean
> 
> Scott Weitzenkamp (sweitzen) wrote:
> > IPoIB performance will vary quite a bit depending on what 
> motherboard, 
> > CPU speed, and HCA type you have.  What are the specs on 
> the systems 
> > you are using?
> >  
> > Netperf (www.netperf.org <http://www.netperf.org>) is a 
> good tool to 
> > measure IPoIB performance.
> >  
> > Scott Weitzenkamp
> > SQA and Release Manager
> > Server Virtualization Business Unit
> > Cisco Systems
> >  
> >
> >     
> --------------------------------------------------------------
> ----------
> >     *From:* openib-general-bounces at openib.org
> >     [mailto:openib-general-bounces at openib.org] *On Behalf 
> Of *Hubbell,
> >     Sean C Contractor/Decibel
> >     *Sent:* Monday, October 23, 2006 5:53 AM
> >     *To:* openib-general at openib.org
> >     *Cc:* Sean Hubbell
> >     *Subject:* [openib-general] IPoIB Question
> >
> >     Hello,
> >
> >       I currently have several applications that uses a legacy IPv4
> >     protocol and I use IPoIB to utilize my infiniband network which
> >     works great. I have completed some timing and 
> throughput analysis
> >     and noticed that I do not get very much more if I use an
> >     infiniband network interface than using my GigE network 
> interface.
> >     My question is, am I using IPoIB correctly or are these the
> >     typical numbers that everyone is seeing? Is there a standard
> >     application that I may use to test my current configuration?
> >
> >     Thanks in advance,
> >
> >     Sean
> >
>