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<p class="MsoNormal"><span style="color:#1F497D">OK, Thanks, I suddently realized ofw is openfabrics for windows. Sorry for the mistake.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">--CQ<o:p></o:p></span></p>
<p class="MsoNormal"><span style="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""> Tzachi Dar [mailto:tzachid@mellanox.co.il]
<br>
<b>Sent:</b> Monday, September 13, 2010 10:15 AM<br>
<b>To:</b> Tang, Changqing; ofw@lists.openfabrics.org<br>
<b>Subject:</b> RE: How many QPs are used so far?<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The list that you have posted to is windows.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">There is probably a module parameter in Linux with the same name, that you can try.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">In any case, you need to try another mailing list (probably <a href="mailto:general@lists.openfabrics.org">
general@lists.openfabrics.org</a>)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks<o:p></o:p></p>
<p class="MsoNormal">Tzachi<span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="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""> Tang, Changqing [mailto:changquing.tang@hp.com]
<br>
<b>Sent:</b> Monday, September 13, 2010 5:06 PM<br>
<b>To:</b> Tzachi Dar; ofw@lists.openfabrics.org<br>
<b>Subject:</b> RE: How many QPs are used so far?<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">Tzachi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> Thanks for your quick response. Our system is Linux, how do I do it?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> Also when ibv_create_qp() fails, is there a way to figure out what the reason is (QP limit reached, unable to lock memory, others)? Does errno tell us anything?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">--CQ<o:p></o:p></span></p>
<p class="MsoNormal"><span style="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""> Tzachi Dar [mailto:tzachid@mellanox.co.il]
<br>
<b>Sent:</b> Monday, September 13, 2010 10:01 AM<br>
<b>To:</b> Tang, Changqing; ofw@lists.openfabrics.org<br>
<b>Subject:</b> RE: How many QPs are used so far?<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">The number of allowed qps is controlled in the registry.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Before we try to debug your system, I would like to try and change that number and see if this will solve your problem.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Can you go to the registry to the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\mlx4_bus\Parameters and increase the key that is called LogNumQp?
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Please stop and start the mlx4_bus from the device manager and repeat your experiment.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Thanks<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Tzachi<o:p></o:p></span></p>
<p class="MsoNormal"><span style="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""> ofw-bounces@lists.openfabrics.org [mailto:ofw-bounces@lists.openfabrics.org]
<b>On Behalf Of </b>Tang, Changqing<br>
<b>Sent:</b> Monday, September 13, 2010 4:27 PM<br>
<b>To:</b> ofw@lists.openfabrics.org<br>
<b>Subject:</b> [ofw] How many QPs are used so far?<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">HI,<o:p></o:p></p>
<p class="MsoNormal"> Our application sometimes report ibv_create_qp() error. Our system has 69G memory and set lockable memory to unlimited. So I wonder running out of QP number is more suspicious than running out of memory.<o:p></o:p></p>
<p class="MsoNormal"> Is there a way to query how many QPs are used at the point of ibv_create_qp() failure ?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> Thank you in advance.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">--CQ<o:p></o:p></p>
<p class="MsoNormal">Hewlett-Packard BIS<o:p></o:p></p>
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