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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Windows, correct? Visual compiler? Where are you running the server?<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><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""> Utkarsh Ayachit [mailto:utkarsh.ayachit@kitware.com]
<br>
<b>Sent:</b> Monday, May 12, 2014 5:54 PM<br>
<b>To:</b> Scott, W Alan<br>
<b>Cc:</b> ParaView Developers<br>
<b>Subject:</b> Re: [EXTERNAL] [Paraview-developers] ParaView Windows Socket Issue<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in">It is true that it seems like it;s failing only on this machine. If you want to test it, just check out git/next and build it as Release or RelWithDebInfo and then run the following test:<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">ctest -R pvcs.RenderNan<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">It hangs randomly for me.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">Thanks<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">Utkarsh<o:p></o:p></p>
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<o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">On Mon, May 12, 2014 at 5:31 PM, Scott, W Alan <<a href="mailto:wascott@sandia.gov" target="_blank">wascott@sandia.gov</a>> wrote:<o:p></o:p></p>
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<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Timing? Could you have hardware that is becoming flaky? Try on another box?</span><o:p></o:p></p>
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<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">If you want to send me bits, I could give it a try?</span><o:p></o:p></p>
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<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Alan</span><o:p></o:p></p>
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<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<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""> Paraview-developers [mailto:<a href="mailto:paraview-developers-bounces@paraview.org" target="_blank">paraview-developers-bounces@paraview.org</a>]
<b>On Behalf Of </b>Utkarsh Ayachit<br>
<b>Sent:</b> Monday, May 12, 2014 3:11 PM<br>
<b>To:</b> ParaView Developers<br>
<b>Subject:</b> [EXTERNAL] [Paraview-developers] ParaView Windows Socket Issue</span><o:p></o:p></p>
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<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:1.0in">
I am running into a strange issue with sockets on Windows. Here are the symptoms:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:1.0in">
+ VS9 (VS2008), 64 bit, Windows 7<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:1.0in">
+ Fails only with Release or RelWithDebInfo builds (never in Debug)<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:1.0in">
+ client-server tests fail when receiving large chunks of data (although sometimes it happens for small chunks too)<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:1.0in">
+ "recv" call fails with error WSAEFAULT (most of the time). I am assured that the corresponding "send" does indeed happen. In other words, not a race condition or some other deadlock.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:1.0in">
+ I can overcome the problem by simply doing a memset(buffer, 0, lengthofbuffer) before the "recv" call.<o:p></o:p></p>
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<o:p></o:p></p>
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I already tried chunking the recv is 8KB chunks, doesn't help. Has anyone ever seen something like this, or has any ideas that could work?<o:p></o:p></p>
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Thanks<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:1.0in">
Utkarsh<o:p></o:p></p>
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