<br><tt><font size=2>> ----- Message from "Michael S. Tsirkin"
<mst@mellanox.co.il> on Sat,<br>
> 16 Dec 2006 18:47:09 +0200 -----</font></tt>
<br><tt><font size=2>> <br>
> To:</font></tt>
<br><tt><font size=2>> <br>
> "Shirley Ma" <xma@us.ibm.com></font></tt>
<br><tt><font size=2>> <br>
> cc:</font></tt>
<br><tt><font size=2>> <br>
> openib-general@openib.org</font></tt>
<br><tt><font size=2>> <br>
> Subject:</font></tt>
<br><tt><font size=2>> <br>
> Re: [openib-general] [PATCHv2] IPoIB CM Experimental support</font></tt>
<br><tt><font size=2>> <br>
> > > > Hi, Michael,<br>
> > > ><br>
> > > > Tried this patch, it didn't work on ehca. I couldn't
change <br>
> the mode from<br>
> > > > datagram to connected from /sys/class.<br>
> > ><br>
> > > It's wroking as designed in that respect. ehca does
not implement<br>
> > > srq - without<br>
> > > srq, there is no way to prepost receive buffers for a resonable
number of<br>
> > > connections without running out of memory.<br>
> > ><br>
> > > So it is falling back on datagram mode.<br>
> > > Talk to ehca guys to implement srq and connected mode will
be enabled.<br>
> ><br>
> > Don't remember SRQ is a MUST for UC mode. Does this patch support
<br>
> devices with<br>
> > SRQ in RC mode?<br>
> <br>
> Yes. Only RC mode is supported by this patch.<br>
> >From what you say I am guessing that SRQ is supported by ehca
HW but support<br>
> is currently lacking in the ehca driver?</font></tt>
<br>
<br><tt><font size=2>The current EHCA hardware does NOT support SRQ.</font></tt>
<br><tt><font size=2><br>
> <br>
> -- <br>
> MST<br>
> <br>
> <br>
> _______________________________________________<br>
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> openib-general@openib.org<br>
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</font></tt>
<br><font size=2 face="sans-serif"><br>
Bernie King-Smith <br>
IBM Corporation<br>
Server Group<br>
Cluster System Performance <br>
wombat2@us.ibm.com (845)433-8483<br>
Tie. 293-8483 or wombat2 on NOTES <br>
<br>
"We are not responsible for the world we are born into, only for the
world we leave when we die.<br>
So we have to accept what has gone before us and work to change the only
thing we can,<br>
-- The Future." William Shatner</font>
<br>