[ofa-general] Performance of UDAPL RDMA vs IB verbs

[Chuck Hartley]

I direct connected the two machines instead of running them to the switch
and I get good BW numbers.  What does that indicate?



On Fri, Feb 15, 2008 at 3:05 PM, Chuck Hartley <hartlch14 at gmail.com> wrote:

> Nope - none of those. The closest thing is osm_pr_rcv_init right when the
> SM starts up.
>
> BTW, we have  OpenSM Rev:openib-3.0.14
>
>
> On Fri, Feb 15, 2008 at 2:56 PM, Hal Rosenstock <hrosenstock at xsigo.com>
> wrote:
>
> > On Fri, 2008-02-15 at 14:47 -0500, Chuck Hartley wrote:
> > > Yes, but I don't see anything in the log file tagged with anything
> > > like that.  Is there some other string I can search on to locate the
> > > request/response messages?
> >
> > Maybe search for osm_pr_rcv_respond ?
> >
> > > What osm_xxx function would be sending the request/responses? Or what
> > > is the message or signal called - I see various ones starting with
> > > OSM_
> > >
> > >
> > >
> > > On Fri, Feb 15, 2008 at 1:52 PM, Hal Rosenstock
> > > <hrosenstock at xsigo.com> wrote:
> > >         On Fri, 2008-02-15 at 13:46 -0500, Chuck Hartley wrote:
> > >         > Yes, we are using OpenSM and I found where to set the -V
> > >         switch
> > >         > in /etc/opensm.conf.  I started opensmd  service on the
> > >         current node
> > >         > and looked at the log file it created.  I have no idea what
> > >         I am
> > >         > looking at / for... there are two items that stand out -
> > >         PortInfo
> > >         > dumps and SMP dumps.  What is it I am looking for or what
> > >         can I post
> > >         > here?
> > >
> > >
> > >         SA PathRecord requests/responses to your end node.
> > >
> > >
> > >         > On Fri, Feb 15, 2008 at 12:47 PM, Hal Rosenstock
> > >         > <hrosenstock at xsigo.com> wrote:
> > >         >         On Fri, 2008-02-15 at 09:30 -0800, Hal Rosenstock
> > >         wrote:
> > >         >         > On Fri, 2008-02-15 at 09:23 -0800, Arlin Davis
> > >         wrote:
> > >         >         > > I would concentrate on the path record
> > >         information
> > >         >         returned
> > >         >         > > from the SA and compare against the straight
> > >         verbs test
> > >         >         > > configuration.
> > >         >         > >
> > >         >         > > Hal/Sean, is there an easy way to see path
> > >         record
> > >         >         information
> > >         >         > > from the query?
> > >         >         >
> > >         >         > Most SMs have a way to display the PathRecord
> > >         responses
> > >         >         being returned
> > >         >         > by the SA. Would that work ? If OpenSM is being
> > >         used, use -V
> > >         >         on the
> > >         >         > command line for this. Contact your vendor if a
> > >         vendor
> > >         >         specific SM is
> > >         >         > being used and this technique would work for your
> > >         purposes.
> > >         >
> > >         >
> > >         >         Another alternative would be to use madeye on the
> > >         end node but
> > >         >         I don't
> > >         >         think there's much decode there so that would need
> > >         to be done
> > >         >         by "hand".
> > >         >
> > >         >         -- Hal
> > >         >
> > >         >         >
> > >         >         > -- Hal
> > >         >         >
> > >         >         > > -arlin
> > >         >         > >
> > >         >         > >
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