[openib-general] Debugging Infiniband?

[Dotan Barak]

Hi jeff.
 
 
there are some issues you need to check:
there are WR that were posted to the remote QP RQ before posting the WR to the SQ in local side
both of the QPs are alive and in valid states (at least RTR for responder and RTS for requestor)
the QPs parameters are synch (for example: the psn)
the route that you are using is valid (port, remote QP number, remote lid)
if you are using UD/UC QPs maybe the packet were dropped ..
 
if you have an IB analyzer you should check that the packet was sent to the expected QP number
you can check the port counters to see how many data was sent / received to each IB port
 
 
I Hope i gave you some useful information

[Dotan Barak] 

 -----Original Message-----
From: openib-general-bounces at openib.org [mailto:openib-general-bounces at openib.org]On Behalf Of Walls, Jeffrey Joel
Sent: Wednesday, January 18, 2006 5:39 PM
To: openib-general
Subject: [openib-general] Debugging Infiniband?


Hi,
 
I first must admit that I'm new to Infiniband and Infiniband programming.
I have just begun writing my first commercial application using IB late last
year.  I'm very familiar with socket programming (TCP, Multicast, etc), though.
 
I'm wondering what techniques expierenced IB programmers use to debug
IB applications.
 
My situation is that I'm running an data producer on Windows XP and a set
of data consumers on Linux.  So for Windows, I'm using WinIB (gen1) and
for linux I'm using OpenIB (gen2).
 
I have both sides implemented according to some of the example code I've
seen and also according to the documents I've been able to find.  The connections
all seem to be set up properly and my producer successfully posts all of its sends
(at least according to my CQE's returned).
 
The problem is that my receiver never sees any of the IB packets.  I post the receive
and then wait forever polling the CQ.
 
I've run out of ideas on what to even look at and am now looking for suggestions on
how to best figure out this problem.
 
If you have any ideas or need more clarification, I'd love to hear from you.
 
Also, if this isn't the proper forum for such discussions, if you could please guide me
in the right direction, I would greatly appreciate that as well.
 
Best Regards,
Jeff
 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openfabrics.org/pipermail/general/attachments/20060118/8feebf91/attachment.html>