[OMPI devel] [ofa-general] OpenMPI and RDMA-CM

[Steve Wise]

On Tue, 2007-05-08 at 11:50 -0400, Jeff Squyres wrote:
> In the "FYI" category...
> 
> There was discussion about the udpal BTL over OFED today on the  
> weekly developer teleconference (per my earlier post, a user is  
> reporting that it doesn't work).  Andrew Friedley is going to work  
> with the Sun developers -- he thinks he might know where the problem  
> is coming from but is in process of physically relocating, and  
> therefore couldn't look at it until late next week at the earliest.

> Sun may be able to pick up the issue -- but if so, I don't know what  
> their timeframe will be (and it may depend on the severity of the  
> problem).
> 

Well I've tried OMPI on ofed-1.2 udapl today and it doesn't work.  I'm
debugging now.


> 
> On May 8, 2007, at 9:47 AM, Steve Wise wrote:
> 
> > On Mon, 2007-05-07 at 20:39 -0400, Jeff Squyres wrote:
> >> On May 7, 2007, at 6:52 PM, Steve Wise wrote:
> >>
> >>> Also, there appears to be a DAPL BTL in OMPI.  Is this BTL complete
> >>> and
> >>> enabled for the ofed-1.2 udapl library?
> >>
> >> Yes, it is complete and is well-tested in Solaris.
> >>
> >> It is not well tested in Linux/OFED (we've been concentrating on the
> >> verbs interface on the OFED side of things -- the "openib" BTL [we
> >> never renamed it when OpenIB changed names to OpenFabrics]).  In
> >> fact, we've had scattered reports of it not working properly in  
> >> Linux/
> >> OFED, but those could well have been pilot error (i.e., me not trying
> >> to run properly -- I know just about zilch about udapl).
> >>
> >
> > The reason I'm asking is twofold:
> >
> > 1) this can get OMPI running on iwarp devices today if it works.
> >
> > 2) the udapl code can be a model for the rdma-cm piece, since the two
> > are similary (client / server connection set, ipaddr/port based,  
> > etc)...
> >
> > I'll try it out on T3.
> >
> >
> > Steve.
> 
>