[ofa-general] Performance of UDAPL RDMA vs IB verbs
Hal Rosenstock
hrosenstock at xsigo.com
Fri Feb 15 12:33:46 PST 2008
On Fri, 2008-02-15 at 15:26 -0500, Chuck Hartley wrote:
> I direct connected the two machines instead of running them to the
> switch and I get good BW numbers. What does that indicate?
Maybe you have a degraded link in your subnet.
>
>
> 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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