<br><font size=2 face="sans-serif">Hal,</font>
<br>
<br><font size=2><tt>> <br>
> On Fri, 2006-05-26 at 20:59, Hal Rosenstock wrote:<br>
> > > What next, coach?<br>
> > <br>
> > Can you turn on madeye on the remote node and see what packets
are<br>
> > received and sent ? Let me know if you need help with that. I
think you<br>
> > said you were running OFED, right ?<br>
></tt></font>
<br>
<br><font size=2 face="sans-serif">The above text was in an earlier email
where you suggested using "madeye" to try to dump MAD packets
to see what was being received and sent on a node where the link goes into
an "initializing" state but will not go "active". To
summarize the problem:</font>
<br>
<br><font size=2 face="sans-serif">For the past several weeks, off and
on, I have been trying to get a small two node testbed system to
run with the OFED release (first RC5, now the 1.0 release).
These nodes are EM64T machines, running an RHEL4 U3 Linux with the 2.6.16
kernel. The HCAs are Mellanox MT25204, 4x DDR, connected back
to back.</font>
<br>
<br><font size=2 face="sans-serif">This back to back setup was working
originally with a backported 2.6.11-34 kernel and I believe it was revision
6500 from the OpenIB svn trunk at that time. The problems started
when I tried to move to the OFED release, with the 2.6.16 kernel.
One machine comes up and appears to work fine, but the other will
not bring the link up. The one that is working is running the OpenSM
Subnet Manager, and when it tries to probe the other system, it gets
no response.</font>
<br>
<br><font size=2 face="sans-serif">We did try cabling the two systems through
a switch to have the SM in the switch try to bring up the links, and the
"good" system's link comes up but the other does not.</font>
<br>
<br><font size=2 face="sans-serif">Returning to the suggestion to use madeye:
I located the madeye source on the OpenIB svn repository, and I
was able to build a kernel module, but I have no information on what
the module does, or how to use it to capture the MAD packets on the machine
with the problem. Can you provide or point me to a description of
how to use madeye?</font>
<br>
<br><font size=2 face="sans-serif"> -Don
Albert-</font>
<br>