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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">This error means the combination of timeout/retry configured for the QP has been exceeded. It could mean:<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l1 level1 lfo2"><![if !supportLists]><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">The destination does not exist on the IB fabric<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l1 level1 lfo2"><![if !supportLists]><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">The destination address was not properly resolved and the wrong IB address is being used<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l1 level1 lfo2"><![if !supportLists]><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">The fabric path between this host and the remote host is not stable or has a high symbol error rate<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">If this message occurs at the start of the job, it is likely #1 or #2. If it occurs later in the job after some traffic has been successfully sent between
those nodes, #3 is more likely.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Since you indicate it is affecting performance, I assume it occurs mid-job, so #3 is more likely. In which case you should use tools like ibping and ibdiagnet
to analyze the errors in the fabric or better yet you can use the Intel True Scale IB Fabric Suite (contact your HW supplier or Intel if you do not have this, it includes a rich set of fabric analysis and diagnostic tools)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Once you resolve this connectivity issue, for the best MPI performance on QLogic Infiniband cards it is recommended to use openmpi’s psm mtl as opposed to the
verbs btl.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">If the problem is #3, you should work with the distributor you purchased your hardware from for further debug of the faulty component.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Todd Rimmer<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:#1F497D">DCSG Architecture</span><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:#1F497D">Voice: 610-312-2152 Fax: 610-312-2233<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:#1F497D"><a href="mailto:Todd.Rimmer@intel.com">Todd.Rimmer@intel.com</a></span><span style="color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><a name="_____replyseparator"></a><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> tac [mailto:tac-bounces@lists.openfabrics.org]
<b>On Behalf Of </b>Woodruff, Robert J<br>
<b>Sent:</b> Monday, August 15, 2016 12:28 PM<br>
<b>To:</b> nv8840@rit.edu; interop-wg@lists.openfabrics.org; ofiwg@lists.openfabrics.org; tac@lists.openfabrics.org; ewg@lists.openfabrics.org<br>
<b>Cc:</b> Marciniszyn, Mike<br>
<b>Subject:</b> Re: [tac] [ofiwg] OFED compatibility issue with Qlogic Infiniband card<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">+ Mike from the Intel InfiniBand driver team.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> ofiwg [<a href="mailto:ofiwg-bounces@lists.openfabrics.org">mailto:ofiwg-bounces@lists.openfabrics.org</a>]
<b>On Behalf Of </b><a href="mailto:nv8840@rit.edu">nv8840@rit.edu</a><br>
<b>Sent:</b> Monday, August 15, 2016 7:50 AM<br>
<b>To:</b> <a href="mailto:interop-wg@lists.openfabrics.org">interop-wg@lists.openfabrics.org</a>;
<a href="mailto:ofiwg@lists.openfabrics.org">ofiwg@lists.openfabrics.org</a>; <a href="mailto:tac@lists.openfabrics.org">
tac@lists.openfabrics.org</a>; <a href="mailto:ewg@lists.openfabrics.org">ewg@lists.openfabrics.org</a><br>
<b>Subject:</b> [ofiwg] OFED compatibility issue with Qlogic Infiniband card<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hi,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I am trying to work with CentOS 6.8 and Qlogic Corp. IBA6110 Infiniband HCA(rev 3) while testing I receive following error message:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:9.5pt">[[23581,1],4][btl_openib_component.c:3369:handle_wc] from n003 to: 192.168.2.5 error polling LP CQ with status RETRY EXCEEDED ERROR status number 12 for wr_id 7057fe8 opcode 2 vendor error 0 qp_idx 3</span><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:9.5pt">and increasing btl_openib_ib_timeout had no effect.</span><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:9.5pt">I am not sure what it means and how can it be resolved as it is affecting my performance. I am using infiniband support package from centos 6.8 for configuration of drivers.</span><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:9.5pt">Thanking you,</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:9.5pt">Regards,</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:9.5pt">Nikhil</span><o:p></o:p></p>
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